$BXP
BXP Inc Stock $bxp

$bxp Overview Financials Valuation SEC Filings Company Website

2013 Q4 Form 8-K Financial Statement

#000119312514224052 Filed on June 03, 2014

Income Statement

Concept	2013 Q4	2013 Q1	2012 Q4
Revenue	$576.2M	$477.8M	$478.0M
YoY Change	20.53%	8.91%	6.11%
Cost Of Revenue	$206.1M	$176.1M	$170.4M
YoY Change	20.95%	8.77%	5.77%
Gross Profit	$370.1M	$301.7M	$300.4M
YoY Change	23.2%	7.06%	3.77%
Gross Profit Margin	64.23%	63.14%	62.84%
Selling, General & Admin	$20.70M	$45.50M	$17.90M
YoY Change	15.64%	64.86%	-7.25%
% of Gross Profit	5.59%	15.08%	5.96%
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$155.4M	$121.2M	$120.5M
YoY Change	28.96%	10.31%	10.35%
% of Gross Profit	41.99%	40.17%	40.11%
Operating Expenses	$175.1M	$165.0M	$133.9M
YoY Change	30.77%	21.15%	4.77%
Operating Profit	$195.0M	$128.0M	$166.5M
YoY Change	17.12%	-10.84%	2.97%
Interest Expense	-$115.6M	$100.4M	-$93.60M
YoY Change	23.5%	-2.72%	108.0%
% of Operating Profit	-59.28%	78.46%	-56.22%
Other Income/Expense, Net
YoY Change
Pretax Income	$79.40M	$38.50M	$72.40M
YoY Change	9.67%	-30.38%	-37.04%
Income Tax		$0.00	$0.00
% Of Pretax Income		0.0%	0.0%
Net Earnings	$88.72M	$47.85M	$65.40M
YoY Change	35.66%	-1.24%	-35.63%
Net Earnings / Revenue	15.4%	10.01%	13.68%
Basic Earnings Per Share	$0.58	$0.32	$0.43
Diluted Earnings Per Share	$0.58	$0.31	$0.43
COMMON SHARES
Basic Shares Outstanding		151.6M shares	151.7M shares
Diluted Shares Outstanding		152.0M shares

Balance Sheet

Concept	2013 Q4	2013 Q1	2012 Q4
SHORT-TERM ASSETS
Cash & Short-Term Investments	$2.382B	$923.2M	$1.054B
YoY Change	125.94%	56.21%	-42.48%
Cash & Equivalents	$2.365B	$909.4M	$1.042B
Short-Term Investments	$16.64M	$13.83M	$12.17M
Other Short-Term Assets	$184.0M	$72.00M	$91.00M
YoY Change	102.2%	-1.37%	21.33%
Inventory
Prepaid Expenses
Receivables	$59.00M	$182.0M	$174.0M
Other Receivables	$652.0M	$612.0M	$599.0M
Total Short-Term Assets	$3.260B	$1.775B	$1.906B
YoY Change	71.04%	29.66%	-26.41%
LONG-TERM ASSETS
Property, Plant & Equipment	$15.82B	$12.27B	$11.96B
YoY Change	32.26%	8.09%	11.29%
Goodwill
YoY Change
Intangibles
YoY Change
Long-Term Investments	$157.0M	$667.0M	$672.0M
YoY Change	-76.64%	-1.77%	-1.03%
Other Assets	$942.0M	$628.0M	$643.0M
YoY Change	46.5%	18.05%	32.3%
Total Long-Term Assets	$16.92B	$13.85B	$13.56B
YoY Change	24.79%	7.82%	11.18%
TOTAL ASSETS
Total Short-Term Assets	$3.260B	$1.775B	$1.906B
Total Long-Term Assets	$16.92B	$13.85B	$13.56B
Total Assets	$20.18B	$15.62B	$15.46B
YoY Change	30.49%	9.92%	4.6%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$202.0M	$210.0M	$199.0M
YoY Change	1.51%	27.27%	28.39%
Accrued Expenses	$168.0M	$99.00M	$72.00M
YoY Change	133.33%	1.02%	4.35%
Deferred Revenue
YoY Change
Short-Term Debt	$0.00	$0.00	$0.00
YoY Change
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities	$867.0M	$420.0M	$381.0M
YoY Change	127.56%	17.98%	20.57%
LONG-TERM LIABILITIES
Long-Term Debt	$11.52B	$8.872B	$8.912B
YoY Change	29.29%	11.44%	2.39%
Other Long-Term Liabilities	$593.0M	$317.0M	$325.0M
YoY Change	82.46%	-2.46%	10.54%
Total Long-Term Liabilities	$12.12B	$9.189B	$9.237B
YoY Change	31.16%	10.9%	2.66%
TOTAL LIABILITIES
Total Short-Term Liabilities	$867.0M	$420.0M	$381.0M
Total Long-Term Liabilities	$12.12B	$9.189B	$9.237B
Total Liabilities	$12.98B	$9.609B	$9.619B
YoY Change	34.96%	3.88%	3.28%
SHAREHOLDERS EQUITY
Retained Earnings	-$108.6M	-$160.7M	-$110.0M
YoY Change	-1.3%		107.21%
Common Stock	$1.530M	$1.516M	$1.516M
YoY Change	0.92%		2.36%
Preferred Stock
YoY Change
Treasury Stock (at cost)	$2.722M	$2.722M	$2.722M
YoY Change	0.0%		0.0%
Treasury Stock Shares	78.90K shares	78.90K shares	78.90K shares
Shareholders Equity	$5.741B	$5.257B	$5.097B
YoY Change
Total Liabilities & Shareholders Equity	$20.18B	$15.62B	$15.46B
YoY Change	30.49%	9.92%	4.6%

Cashflow Statement

Concept	2013 Q4	2013 Q1	2012 Q4
OPERATING ACTIVITIES
Net Income	$88.72M	$47.85M	$65.40M
YoY Change	35.66%	-1.24%	-35.63%
Depreciation, Depletion And Amortization	$155.4M	$121.2M	$120.5M
YoY Change	28.96%	10.31%	10.35%
Cash From Operating Activities	$227.5M	$237.4M	$179.2M
YoY Change	26.95%	40.27%	9.67%
INVESTING ACTIVITIES
Capital Expenditures	-$65.60M	-$432.1M	-$267.1M
YoY Change	-75.44%	-43.03%	36.41%
Acquisitions
YoY Change
Other Investing Activities	-$13.60M	-$800.0K	$9.200M
YoY Change	-247.83%	-50.0%	-93.24%
Cash From Investing Activities	-$79.20M	-$433.0M	-$257.9M
YoY Change	-69.29%	-43.04%	331.99%
FINANCING ACTIVITIES
Cash Dividend Paid		$110.9M
YoY Change		20.18%
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	575.6M	$62.96M	-102.5M
YoY Change	-661.56%	-109.82%	-115.62%
NET CHANGE
Cash From Operating Activities	227.5M	$237.4M	179.2M
Cash From Investing Activities	-79.20M	-$433.0M	-257.9M
Cash From Financing Activities	575.6M	$62.96M	-102.5M
Net Change In Cash	723.9M	-$132.6M	-181.2M
YoY Change	-499.5%	-89.24%	-123.84%
FREE CASH FLOW
Cash From Operating Activities	$227.5M	$237.4M	$179.2M
Capital Expenditures	-$65.60M	-$432.1M	-$267.1M
Free Cash Flow	$293.1M	$669.5M	$446.3M
YoY Change	-34.33%	-27.83%	24.25%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2012Q4	us-gaap	Accounts Payable And Accrued Liabilities Current And Noncurrent AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent	199102000	USD
CY2013Q4	us-gaap	Accounts Payable And Accrued Liabilities Current And Noncurrent AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent	202470000	USD
CY2013Q4	us-gaap	Accounts Receivable Net AccountsReceivableNet	59464000	USD
CY2012Q4	us-gaap	Accounts Receivable Net AccountsReceivableNet	69555000	USD
CY2012Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-13817000	USD
CY2013Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-11556000	USD
CY2013Q4	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	5662453000	USD
CY2012Q4	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	5222073000	USD
CY2013	us-gaap	Adjustments To Additional Paid In Capital Equity Component Of Convertible Debt AdjustmentsToAdditionalPaidInCapitalEquityComponentOfConvertibleDebt	-43869000	USD
CY2012	us-gaap	Adjustments To Reconcile Net Income Loss To Cash Provided By Used In Operating Activities AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivities	310810000	USD
CY2013	us-gaap	Adjustments To Reconcile Net Income Loss To Cash Provided By Used In Operating Activities AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivities	-63514000	USD
CY2011	us-gaap	Adjustments To Reconcile Net Income Loss To Cash Provided By Used In Operating Activities AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivities	292502000	USD
CY2011	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	28300000	USD
CY2012	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	28300000	USD
CY2013	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	43900000	USD
CY2012Q4	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	1960000	USD
CY2013Q4	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	1636000	USD
CY2013	us-gaap	Asset Impairment Charges AssetImpairmentCharges	8306000	USD
CY2012	us-gaap	Asset Impairment Charges AssetImpairmentCharges	0	USD
CY2011	us-gaap	Asset Impairment Charges AssetImpairmentCharges	0	USD
CY2013Q4	us-gaap	Assets Assets	20162251000	USD
CY2012Q4	us-gaap	Assets Assets	15462321000	USD
CY2013	us-gaap	Business Acquisition Pro Forma Earnings Per Share Basic BusinessAcquisitionProFormaEarningsPerShareBasic	2.58
CY2012	us-gaap	Business Acquisition Pro Forma Earnings Per Share Basic BusinessAcquisitionProFormaEarningsPerShareBasic	4.15
CY2012	us-gaap	Business Acquisition Pro Forma Earnings Per Share Diluted BusinessAcquisitionProFormaEarningsPerShareDiluted	4.13
CY2013	us-gaap	Business Acquisition Pro Forma Earnings Per Share Diluted BusinessAcquisitionProFormaEarningsPerShareDiluted	2.57
CY2013	us-gaap	Business Acquisitions Pro Forma Income Loss From Continuing Operations Before Changes In Accounting And Extraordinary Items Net Of Tax BusinessAcquisitionsProFormaIncomeLossFromContinuingOperationsBeforeChangesInAccountingAndExtraordinaryItemsNetOfTax	302354000	USD
CY2012	us-gaap	Business Acquisitions Pro Forma Income Loss From Continuing Operations Before Changes In Accounting And Extraordinary Items Net Of Tax BusinessAcquisitionsProFormaIncomeLossFromContinuingOperationsBeforeChangesInAccountingAndExtraordinaryItemsNetOfTax	634457000	USD
CY2013	us-gaap	Business Acquisitions Pro Forma Net Income Loss BusinessAcquisitionsProFormaNetIncomeLoss	400017000	USD
CY2012	us-gaap	Business Acquisitions Pro Forma Net Income Loss BusinessAcquisitionsProFormaNetIncomeLoss	626174000	USD
CY2012	us-gaap	Business Acquisitions Pro Forma Revenue BusinessAcquisitionsProFormaRevenue	2149391000	USD
CY2013	us-gaap	Business Acquisitions Pro Forma Revenue BusinessAcquisitionsProFormaRevenue	2257098000	USD
CY2012Q4	us-gaap	Business Combination Acquisition Of Less Than100 Percent Noncontrolling Interest Fair Value BusinessCombinationAcquisitionOfLessThan100PercentNoncontrollingInterestFairValue	98787000	USD
CY2011Q4	us-gaap	Business Combination Acquisition Of Less Than100 Percent Noncontrolling Interest Fair Value BusinessCombinationAcquisitionOfLessThan100PercentNoncontrollingInterestFairValue	0	USD
CY2013Q4	us-gaap	Business Combination Acquisition Of Less Than100 Percent Noncontrolling Interest Fair Value BusinessCombinationAcquisitionOfLessThan100PercentNoncontrollingInterestFairValue	0	USD
CY2012	us-gaap	Cash Acquired From Acquisition CashAcquiredFromAcquisition	0	USD
CY2011	us-gaap	Cash Acquired From Acquisition CashAcquiredFromAcquisition	0	USD
CY2013	us-gaap	Cash Acquired From Acquisition CashAcquiredFromAcquisition	79468000	USD
CY2013Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	2365137000	USD
CY2012Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	1041978000	USD
CY2011Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	1823208000	USD
CY2009Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	478948000	USD
CY2013	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	1323159000	USD
CY2011	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	1344260000	USD
CY2012	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	-781230000	USD
CY2013Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies	0	USD
CY2012Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies	0	USD
CY2013Q4	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.65
CY2013Q1	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.65
CY2013Q2	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.65
CY2013Q3	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.65
CY2012Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2013Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2013Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	250000000	shares
CY2012Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	250000000	shares
CY2013Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	153062001	shares
CY2012Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	151680109	shares
CY2013Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	152983101	shares
CY2012Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	151601209	shares
CY2013Q4	us-gaap	Common Stock Value CommonStockValue	1530000	USD
CY2012Q4	us-gaap	Common Stock Value CommonStockValue	1516000	USD
CY2012	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	291971000	USD
CY2013	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	752072000	USD
CY2011	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	274977000	USD
CY2013	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	91629000	USD
CY2012	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	42489000	USD
CY2011	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	41147000	USD
CY2013	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	843953000	USD
CY2011	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	316421000	USD
CY2012	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	334733000	USD
CY2013	us-gaap	Concentration Risk Percentage1 ConcentrationRiskPercentage1	0.100
CY2012	us-gaap	Concentration Risk Percentage1 ConcentrationRiskPercentage1	0.100
CY2011	us-gaap	Concentration Risk Percentage1 ConcentrationRiskPercentage1	0.100
CY2013	us-gaap	Construction And Development Costs ConstructionAndDevelopmentCosts	-396835000	USD
CY2013Q4	us-gaap	Deferred Compensation Liability Current And Noncurrent DeferredCompensationLiabilityCurrentAndNoncurrent	16600000	USD
CY2012Q4	us-gaap	Deferred Compensation Liability Current And Noncurrent DeferredCompensationLiabilityCurrentAndNoncurrent	12200000	USD
CY2013Q4	us-gaap	Deferred Costs DeferredCosts	884450000	USD
CY2011	us-gaap	Construction And Development Costs ConstructionAndDevelopmentCosts	-271856000	USD
CY2012	us-gaap	Construction And Development Costs ConstructionAndDevelopmentCosts	-356397000	USD
CY2013Q4	us-gaap	Construction In Progress Gross ConstructionInProgressGross	1523179000	USD
CY2012Q4	us-gaap	Construction In Progress Gross ConstructionInProgressGross	1036780000	USD
CY2013	us-gaap	Conversion Of Stock Shares Issued1 ConversionOfStockSharesIssued1	929441	shares
CY2012	us-gaap	Conversion Of Stock Shares Issued1 ConversionOfStockSharesIssued1	1110660	shares
CY2013Q4	us-gaap	Convertible Notes Payable ConvertibleNotesPayable	744880000	USD
CY2012Q4	us-gaap	Convertible Notes Payable ConvertibleNotesPayable	1170356000	USD
CY2012	us-gaap	Costs And Expenses CostsAndExpenses	1206865000	USD
CY2013	us-gaap	Costs And Expenses CostsAndExpenses	1457419000	USD
CY2011	us-gaap	Costs And Expenses CostsAndExpenses	1117626000	USD
CY2013Q4	us-gaap	Debt Instrument Carrying Amount DebtInstrumentCarryingAmount	747500000	USD
CY2013Q4	us-gaap	Debt Instrument Convertible Carrying Amount Of The Equity Component DebtInstrumentConvertibleCarryingAmountOfTheEquityComponent	91900000	USD
CY2012Q4	us-gaap	Debt Instrument Convertible Carrying Amount Of The Equity Component DebtInstrumentConvertibleCarryingAmountOfTheEquityComponent	148500000	USD
CY2008Q3	us-gaap	Debt Instrument Convertible Conversion Price1 DebtInstrumentConvertibleConversionPrice1	117.58
CY2013	us-gaap	Debt Instrument Convertible Conversion Ratio1 DebtInstrumentConvertibleConversionRatio1	8.6974
CY2013Q4	us-gaap	Debt Instrument Interest Rate Effective Percentage DebtInstrumentInterestRateEffectivePercentage	0.04037
CY2013Q4	us-gaap	Debt Instrument Interest Rate Stated Percentage DebtInstrumentInterestRateStatedPercentage	0.03625
CY2013	us-gaap	Debt Instrument Maturity Date DebtInstrumentMaturityDate	2014-02-15
CY2013	us-gaap	Debt Instrument Maturity Date Range End1 DebtInstrumentMaturityDateRangeEnd1	2022-04-10
CY2013Q4	us-gaap	Debt Instrument Unamortized Discount DebtInstrumentUnamortizedDiscount	14146000	USD
CY2012Q4	us-gaap	Debt Instrument Unamortized Discount DebtInstrumentUnamortizedDiscount	10472000	USD
CY2012Q4	us-gaap	Deferred Costs DeferredCosts	588235000	USD
CY2012Q4	us-gaap	Deferred Costs Leasing Gross DeferredCostsLeasingGross	790740000	USD
CY2013Q4	us-gaap	Deferred Costs Leasing Gross DeferredCostsLeasingGross	1183204000	USD
CY2013Q4	us-gaap	Deferred Finance Costs Gross DeferredFinanceCostsGross	76798000	USD
CY2012Q4	us-gaap	Deferred Finance Costs Gross DeferredFinanceCostsGross	90682000	USD
CY2012Q4	us-gaap	Deferred Rent Receivables Net DeferredRentReceivablesNet	598199000	USD
CY2013Q4	us-gaap	Deferred Rent Receivables Net DeferredRentReceivablesNet	651603000	USD
CY2011	us-gaap	Defined Contribution Plan Employer Discretionary Contribution Amount DefinedContributionPlanEmployerDiscretionaryContributionAmount	3100000	USD
CY2012	us-gaap	Defined Contribution Plan Employer Discretionary Contribution Amount DefinedContributionPlanEmployerDiscretionaryContributionAmount	3200000	USD
CY2013	us-gaap	Defined Contribution Plan Employer Discretionary Contribution Amount DefinedContributionPlanEmployerDiscretionaryContributionAmount	3400000	USD
	us-gaap	Defined Contribution Plan Employer Matching Contribution Percent DefinedContributionPlanEmployerMatchingContributionPercent	0.03
	us-gaap	Defined Contribution Plan Employer Matching Contribution Percent DefinedContributionPlanEmployerMatchingContributionPercent	0.02
	us-gaap	Defined Contribution Plan Employer Matching Contribution Percent Of Match DefinedContributionPlanEmployerMatchingContributionPercentOfMatch	2.00
	us-gaap	Defined Contribution Plan Employer Matching Contribution Percent Of Match DefinedContributionPlanEmployerMatchingContributionPercentOfMatch	2.00
CY2013	us-gaap	Depreciation And Amortization DepreciationAndAmortization	560637000	USD
CY2011	us-gaap	Depreciation And Amortization DepreciationAndAmortization	429742000	USD
CY2012	us-gaap	Depreciation And Amortization DepreciationAndAmortization	445875000	USD
CY2011	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	439184000	USD
CY2013	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	565397000	USD
CY2012	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	454044000	USD
CY2012	us-gaap	Dilutive Securities DilutiveSecurities	0	USD
CY2011	us-gaap	Dilutive Securities DilutiveSecurities	0	USD
CY2013	us-gaap	Dilutive Securities DilutiveSecurities	0	USD
CY2011	us-gaap	Direct Costs Of Hotels DirectCostsOfHotels	26128000	USD
CY2013	us-gaap	Direct Costs Of Hotels DirectCostsOfHotels	28447000	USD
CY2012	us-gaap	Direct Costs Of Hotels DirectCostsOfHotels	28120000	USD
CY2013	us-gaap	Direct Costs Of Leased And Rented Property Or Equipment DirectCostsOfLeasedAndRentedPropertyOrEquipment	742956000	USD
CY2012	us-gaap	Direct Costs Of Leased And Rented Property Or Equipment DirectCostsOfLeasedAndRentedPropertyOrEquipment	639088000	USD
CY2011	us-gaap	Direct Costs Of Leased And Rented Property Or Equipment DirectCostsOfLeasedAndRentedPropertyOrEquipment	572668000	USD
CY2011	us-gaap	Discontinued Operation Income Loss From Discontinued Operation During Phase Out Period Net Of Tax DiscontinuedOperationIncomeLossFromDiscontinuedOperationDuringPhaseOutPeriodNetOfTax	10876000	USD
CY2013	us-gaap	Discontinued Operation Income Loss From Discontinued Operation During Phase Out Period Net Of Tax DiscontinuedOperationIncomeLossFromDiscontinuedOperationDuringPhaseOutPeriodNetOfTax	8022000	USD
CY2012	us-gaap	Discontinued Operation Income Loss From Discontinued Operation During Phase Out Period Net Of Tax DiscontinuedOperationIncomeLossFromDiscontinuedOperationDuringPhaseOutPeriodNetOfTax	9806000	USD
CY2012	us-gaap	Dividends Dividends	387989000	USD
CY2011	us-gaap	Dividends Dividends	340128000	USD
CY2013	us-gaap	Dividends Dividends	831826000	USD
CY2013Q4	us-gaap	Dividends Payable Amount Per Share DividendsPayableAmountPerShare	0.65
CY2013Q4	us-gaap	Dividends Payable Current And Noncurrent DividendsPayableCurrentAndNoncurrent	497242000	USD
CY2012Q4	us-gaap	Dividends Payable Current And Noncurrent DividendsPayableCurrentAndNoncurrent	110488000	USD
CY2011Q4	us-gaap	Dividends Payable Current And Noncurrent DividendsPayableCurrentAndNoncurrent	91901000	USD
CY2013	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	4.87
CY2012	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.93
CY2011	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.87
CY2013Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.32
CY2013Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.00
CY2013Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.58
CY2013Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.95
CY2012Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.38
CY2012Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.79
CY2012Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.33
CY2012Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.43
CY2013	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	4.86
CY2011	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.86
CY2012	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.92
CY2013Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.00
CY2013Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.31
CY2013Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.94
CY2013Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.58
CY2012Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.33
CY2012Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.78
CY2012Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.38
CY2012Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.43
CY2013	us-gaap	Equity Method Investment Dividends Or Distributions EquityMethodInvestmentDividendsOrDistributions	32600000	USD
CY2011	us-gaap	Equity Method Investment Dividends Or Distributions EquityMethodInvestmentDividendsOrDistributions	39851000	USD
CY2012	us-gaap	Equity Method Investment Dividends Or Distributions EquityMethodInvestmentDividendsOrDistributions	47002000	USD
CY2012Q4	us-gaap	Excess Stock Shares Authorized ExcessStockSharesAuthorized	150000000	shares
CY2013Q4	us-gaap	Excess Stock Shares Authorized ExcessStockSharesAuthorized	150000000	shares
CY2012Q4	us-gaap	Excess Stock Shares Issued ExcessStockSharesIssued	0	shares
CY2013Q4	us-gaap	Excess Stock Shares Issued ExcessStockSharesIssued	0	shares
CY2013Q4	us-gaap	Excess Stock Shares Outstanding ExcessStockSharesOutstanding	0	shares
CY2012Q4	us-gaap	Excess Stock Shares Outstanding ExcessStockSharesOutstanding	0	shares
CY2013Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Next Twelve Months FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths	91903000	USD
CY2013Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Five FiniteLivedIntangibleAssetsAmortizationExpenseYearFive	36306000	USD
CY2013Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Four FiniteLivedIntangibleAssetsAmortizationExpenseYearFour	41106000	USD
CY2013Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Three FiniteLivedIntangibleAssetsAmortizationExpenseYearThree	55083000	USD
CY2013Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Two FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	66716000	USD
CY2012Q4	us-gaap	Furniture And Fixtures Gross FurnitureAndFixturesGross	23441000	USD
CY2013Q4	us-gaap	Furniture And Fixtures Gross FurnitureAndFixturesGross	25164000	USD
CY2013	us-gaap	Gain Loss On Disposition Of Real Estate Discontinued Operations GainLossOnDispositionOfRealEstateDiscontinuedOperations	112829000	USD
CY2011	us-gaap	Gain Loss On Disposition Of Real Estate Discontinued Operations GainLossOnDispositionOfRealEstateDiscontinuedOperations	0	USD
CY2012	us-gaap	Gain Loss On Disposition Of Real Estate Discontinued Operations GainLossOnDispositionOfRealEstateDiscontinuedOperations	36877000	USD
CY2012	us-gaap	Gain Loss On Investments GainLossOnInvestments	1389000	USD
CY2011	us-gaap	Gain Loss On Investments GainLossOnInvestments	-443000	USD
CY2013	us-gaap	Gain Loss On Investments GainLossOnInvestments	2911000	USD
CY2012	us-gaap	Gain Loss On Sale Of Investments GainLossOnSaleOfInvestments	1389000	USD
CY2011	us-gaap	Gain Loss On Sale Of Investments GainLossOnSaleOfInvestments	-443000	USD
CY2013	us-gaap	Gain Loss On Sale Of Investments GainLossOnSaleOfInvestments	2911000	USD
CY2013	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	122000	USD
CY2011	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-1494000	USD
CY2012	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-4453000	USD
CY2012	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	90129000	USD
CY2011	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	87101000	USD
CY2013	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	115329000	USD
CY2011	us-gaap	Impairment Of Long Lived Assets To Be Disposed Of ImpairmentOfLongLivedAssetsToBeDisposedOf	0	USD
CY2013	us-gaap	Impairment Of Long Lived Assets To Be Disposed Of ImpairmentOfLongLivedAssetsToBeDisposedOf	3241000	USD
CY2012	us-gaap	Impairment Of Long Lived Assets To Be Disposed Of ImpairmentOfLongLivedAssetsToBeDisposedOf	0	USD
CY2012	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	248042000	USD
CY2013	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	618113000	USD
CY2011	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	263046000	USD
CY2011	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	302950000	USD
CY2012	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	285456000	USD
CY2013	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	703648000	USD
CY2013Q4	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	79395000	USD
CY2013Q2	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	503446000	USD
CY2013Q3	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	82311000	USD
CY2013Q1	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	38496000	USD
CY2012Q1	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	53079000	USD
CY2012Q3	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	63331000	USD
CY2012Q4	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	74251000	USD
CY2012Q2	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	94795000	USD
CY2013	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	4.06
CY2011	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	1.80
CY2012	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	1.65
CY2012	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	1.64
CY2011	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	1.80
CY2013	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	4.05
CY2011	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Noncontrolling Interest IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToNoncontrollingInterest	1243000	USD
CY2013	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Noncontrolling Interest IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToNoncontrollingInterest	14151000	USD
CY2012	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Noncontrolling Interest IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToNoncontrollingInterest	5075000	USD
CY2013	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	123641000	USD
CY2012	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	41608000	USD
CY2011	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	9633000	USD
CY2013	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	0.81
CY2012	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	0.28
CY2011	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	0.07
CY2013	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	0.81
CY2011	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	0.06
CY2012	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	0.28
CY2013	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	75074000	USD
CY2011	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	85896000	USD
CY2012	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	49078000	USD
CY2011	us-gaap	Income Tax Reconciliation Nondeductible Expense Depreciation And Amortization IncomeTaxReconciliationNondeductibleExpenseDepreciationAndAmortization	-117675000	USD
CY2013	us-gaap	Income Tax Reconciliation Nondeductible Expense Depreciation And Amortization IncomeTaxReconciliationNondeductibleExpenseDepreciationAndAmortization	-170370000	USD
CY2012	us-gaap	Income Tax Reconciliation Nondeductible Expense Depreciation And Amortization IncomeTaxReconciliationNondeductibleExpenseDepreciationAndAmortization	-105599000	USD
CY2013	us-gaap	Income Tax Reconciliation Nondeductible Expense Share Based Compensation Cost IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost	-42146000	USD
CY2011	us-gaap	Income Tax Reconciliation Nondeductible Expense Share Based Compensation Cost IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost	-827000	USD
CY2012	us-gaap	Income Tax Reconciliation Nondeductible Expense Share Based Compensation Cost IncomeTaxReconciliationNondeductibleExpenseShareBasedCompensationCost	-19660000	USD
CY2013	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	12797000	USD
CY2012	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	-35461000	USD
CY2011	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	-29389000	USD
CY2013	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	13108000	USD
CY2012	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	3854000	USD
CY2011	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	6660000	USD
CY2013	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	443000	USD
CY2012	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	-23155000	USD
CY2011	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	19396000	USD
CY2012	us-gaap	Increase Decrease In Interest Payable Net IncreaseDecreaseInInterestPayableNet	3356000	USD
CY2011	us-gaap	Increase Decrease In Interest Payable Net IncreaseDecreaseInInterestPayableNet	6778000	USD
CY2013	us-gaap	Increase Decrease In Interest Payable Net IncreaseDecreaseInInterestPayableNet	21302000	USD
CY2012	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	1354000	USD
CY2011	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	6569000	USD
CY2013	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	2073000	USD
CY2011	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	39213000	USD
CY2013	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	-12966000	USD
CY2012	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	-6990000	USD
CY2012	us-gaap	Increase Decrease In Restricted Cash IncreaseDecreaseInRestrictedCash	0	USD
CY2013	us-gaap	Increase Decrease In Restricted Cash IncreaseDecreaseInRestrictedCash	0	USD
CY2011	us-gaap	Increase Decrease In Restricted Cash IncreaseDecreaseInRestrictedCash	-267500000	USD
CY2013	us-gaap	Increase Decrease In Restricted Cash For Operating Activities IncreaseDecreaseInRestrictedCashForOperatingActivities	-315000	USD
CY2011	us-gaap	Increase Decrease In Restricted Cash For Operating Activities IncreaseDecreaseInRestrictedCashForOperatingActivities	9801000	USD
CY2012	us-gaap	Increase Decrease In Restricted Cash For Operating Activities IncreaseDecreaseInRestrictedCashForOperatingActivities	-10272000	USD
CY2012	us-gaap	Interest And Other Income InterestAndOtherIncome	10091000	USD
CY2011	us-gaap	Interest And Other Income InterestAndOtherIncome	5358000	USD
CY2013	us-gaap	Interest And Other Income InterestAndOtherIncome	8310000	USD
CY2011	us-gaap	Interest Costs Capitalized InterestCostsCapitalized	48178000	USD
CY2013	us-gaap	Interest Costs Capitalized InterestCostsCapitalized	68152000	USD
CY2012	us-gaap	Interest Costs Capitalized InterestCostsCapitalized	44278000	USD
CY2013	us-gaap	Interest Expense InterestExpense	446880000	USD
CY2011	us-gaap	Interest Expense InterestExpense	391533000	USD
CY2012	us-gaap	Interest Expense InterestExpense	410970000	USD
CY2011	us-gaap	Interest Expense Debt InterestExpenseDebt	66300000	USD
CY2012	us-gaap	Interest Expense Debt InterestExpenseDebt	48400000	USD
CY2013	us-gaap	Interest Expense Debt InterestExpenseDebt	34800000	USD
CY2013	us-gaap	Interest Paid InterestPaid	547973000	USD
CY2011	us-gaap	Interest Paid InterestPaid	386170000	USD
CY2012	us-gaap	Interest Paid InterestPaid	480866000	USD
CY2013Q4	us-gaap	Interest Payable Current And Noncurrent InterestPayableCurrentAndNoncurrent	167523000	USD
CY2012Q4	us-gaap	Interest Payable Current And Noncurrent InterestPayableCurrentAndNoncurrent	72461000	USD
CY2013Q4	us-gaap	Investment Building And Building Improvements InvestmentBuildingAndBuildingImprovements	11065113000	USD
CY2012Q4	us-gaap	Investment Building And Building Improvements InvestmentBuildingAndBuildingImprovements	9517343000	USD
CY2013Q4	us-gaap	Investments In Affiliates Subsidiaries Associates And Joint Ventures InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures	126084000	USD
CY2012Q4	us-gaap	Investments In Affiliates Subsidiaries Associates And Joint Ventures InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures	659916000	USD
CY2013Q4	us-gaap	Land Land	4450532000	USD
CY2012Q4	us-gaap	Land Land	2605162000	USD
CY2013Q4	us-gaap	Land Available For Development LandAvailableForDevelopment	297376000	USD
CY2012Q4	us-gaap	Land Available For Development LandAvailableForDevelopment	275094000	USD
CY2013Q4	us-gaap	Leasehold Improvements Gross LeaseholdImprovementsGross	1617401000	USD
CY2012Q4	us-gaap	Leasehold Improvements Gross LeaseholdImprovementsGross	1435508000	USD
CY2012Q4	us-gaap	Liabilities Liabilities	9619033000	USD
CY2013Q4	us-gaap	Liabilities Liabilities	12967712000	USD
CY2013Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	20162251000	USD
CY2012Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	15462321000	USD
CY2012	us-gaap	Limited Liability Company Llc Or Limited Partnership Lp Managing Member Or General Partner Ownership Interest LimitedLiabilityCompanyLLCOrLimitedPartnershipLPManagingMemberOrGeneralPartnerOwnershipInterest	0.890
CY2013	us-gaap	Limited Liability Company Llc Or Limited Partnership Lp Managing Member Or General Partner Ownership Interest LimitedLiabilityCompanyLLCOrLimitedPartnershipLPManagingMemberOrGeneralPartnerOwnershipInterest	0.895
CY2012Q4	us-gaap	Line Of Credit LineOfCredit	0	USD
CY2013Q4	us-gaap	Line Of Credit LineOfCredit	0	USD
CY2013Q4	us-gaap	Line Of Credit Facility Amount Outstanding LineOfCreditFacilityAmountOutstanding	0.0	USD
CY2012Q4	us-gaap	Line Of Credit Facility Amount Outstanding LineOfCreditFacilityAmountOutstanding	0	USD
CY2013Q4	us-gaap	Long Term Debt LongTermDebt	4258530000	USD
CY2013Q4	us-gaap	Long Term Debt Fair Value LongTermDebtFairValue	191204000	USD
CY2013Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal After Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive	695327000	USD
CY2013Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Next Twelve Months LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths	87759000	USD
CY2013Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive	18633000	USD
CY2013Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Four LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour	2821750000	USD
CY2013Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Three LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree	608879000	USD
CY2013Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Two LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo	26182000	USD
CY2013Q4	us-gaap	Marketable Securities MarketableSecurities	16641000	USD
CY2012Q4	us-gaap	Marketable Securities MarketableSecurities	12172000	USD
CY2011	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	2007000	USD
CY2013	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	5039000	USD
CY2012	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	2890000	USD
CY2013Q4	us-gaap	Minority Interest In Limited Partnerships MinorityInterestInLimitedPartnerships	726132000	USD
CY2012Q4	us-gaap	Minority Interest In Limited Partnerships MinorityInterestInLimitedPartnerships	-1964000	USD
CY2013Q4	us-gaap	Minority Interest In Operating Partnerships MinorityInterestInOperatingPartnerships	576333000	USD
CY2012Q4	us-gaap	Minority Interest In Operating Partnerships MinorityInterestInOperatingPartnerships	539753000	USD
CY2012	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-146147000	USD
CY2011	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	828028000	USD
CY2013	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	1077873000	USD
CY2012	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-1278032000	USD
CY2013	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-532640000	USD
CY2011	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-90096000	USD
CY2011	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	606328000	USD
CY2013	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	777926000	USD
CY2012	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	642949000	USD
CY2013	us-gaap	Net Income Loss NetIncomeLoss	749811000	USD
CY2012	us-gaap	Net Income Loss NetIncomeLoss	289650000	USD
CY2011	us-gaap	Net Income Loss NetIncomeLoss	272679000	USD
CY2013Q1	us-gaap	Net Income Loss NetIncomeLoss	47854000	USD
CY2013Q4	us-gaap	Net Income Loss NetIncomeLoss	88719000	USD
CY2013Q3	us-gaap	Net Income Loss NetIncomeLoss	152677000	USD
CY2013Q2	us-gaap	Net Income Loss NetIncomeLoss	452417000	USD
CY2012Q2	us-gaap	Net Income Loss NetIncomeLoss	118559000	USD
CY2012Q1	us-gaap	Net Income Loss NetIncomeLoss	48454000	USD
CY2012Q3	us-gaap	Net Income Loss NetIncomeLoss	57249000	USD
CY2012Q4	us-gaap	Net Income Loss NetIncomeLoss	65400000	USD
CY2012	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	289650000	USD
CY2013	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	741754000	USD
CY2011	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	272679000	USD
CY2013	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	741594000	USD
CY2011	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	272679000	USD
CY2012	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	289650000	USD
CY2013	us-gaap	Noncontrolling Interest In Net Income Loss Limited Partnerships Nonredeemable NoncontrollingInterestInNetIncomeLossLimitedPartnershipsNonredeemable	1347000	USD
CY2011	us-gaap	Noncontrolling Interest In Net Income Loss Limited Partnerships Nonredeemable NoncontrollingInterestInNetIncomeLossLimitedPartnershipsNonredeemable	1558000	USD
CY2012	us-gaap	Noncontrolling Interest In Net Income Loss Limited Partnerships Nonredeemable NoncontrollingInterestInNetIncomeLossLimitedPartnershipsNonredeemable	3792000	USD
CY2011	us-gaap	Noncontrolling Interest In Net Income Loss Operating Partnerships Redeemable NoncontrollingInterestInNetIncomeLossOperatingPartnershipsRedeemable	35007000	USD
CY2012	us-gaap	Noncontrolling Interest In Net Income Loss Operating Partnerships Redeemable NoncontrollingInterestInNetIncomeLossOperatingPartnershipsRedeemable	30125000	USD
CY2013	us-gaap	Noncontrolling Interest In Net Income Loss Operating Partnerships Redeemable NoncontrollingInterestInNetIncomeLossOperatingPartnershipsRedeemable	70085000	USD
CY2013	us-gaap	Noncontrolling Interest In Net Income Loss Preferred Unit Holders Redeemable NoncontrollingInterestInNetIncomeLossPreferredUnitHoldersRedeemable	6046000	USD
CY2012	us-gaap	Noncontrolling Interest In Net Income Loss Preferred Unit Holders Redeemable NoncontrollingInterestInNetIncomeLossPreferredUnitHoldersRedeemable	3497000	USD
CY2011	us-gaap	Noncontrolling Interest In Net Income Loss Preferred Unit Holders Redeemable NoncontrollingInterestInNetIncomeLossPreferredUnitHoldersRedeemable	3339000	USD
CY2013	us-gaap	Noncontrolling Interest Increase From Business Combination NoncontrollingInterestIncreaseFromBusinessCombination	480861000	USD
CY2011	us-gaap	Noncontrolling Interest Increase From Business Combination NoncontrollingInterestIncreaseFromBusinessCombination	0	USD
CY2012	us-gaap	Noncontrolling Interest Increase From Business Combination NoncontrollingInterestIncreaseFromBusinessCombination	0	USD
CY2013	us-gaap	Noncontrolling Interest Increase From Subsidiary Equity Issuance NoncontrollingInterestIncreaseFromSubsidiaryEquityIssuance	0	USD
CY2011	us-gaap	Noncontrolling Interest Increase From Subsidiary Equity Issuance NoncontrollingInterestIncreaseFromSubsidiaryEquityIssuance	0	USD
CY2012	us-gaap	Noncontrolling Interest Increase From Subsidiary Equity Issuance NoncontrollingInterestIncreaseFromSubsidiaryEquityIssuance	0	USD
CY2013Q4	us-gaap	Notes Receivable Related Parties NotesReceivableRelatedParties	0	USD
CY2012Q4	us-gaap	Notes Receivable Related Parties NotesReceivableRelatedParties	282491000	USD
CY2011	us-gaap	Operating Income Loss OperatingIncomeLoss	605166000	USD
CY2012	us-gaap	Operating Income Loss OperatingIncomeLoss	640321000	USD
CY2013	us-gaap	Operating Income Loss OperatingIncomeLoss	678120000	USD
CY2013Q4	us-gaap	Operating Leases Future Minimum Payments Due Current OperatingLeasesFutureMinimumPaymentsDueCurrent	13184000	USD
CY2013Q4	us-gaap	Operating Leases Future Minimum Payments Due In Five Years OperatingLeasesFutureMinimumPaymentsDueInFiveYears	14198000	USD
CY2013Q4	us-gaap	Operating Leases Future Minimum Payments Due In Four Years OperatingLeasesFutureMinimumPaymentsDueInFourYears	13963000	USD
CY2013Q4	us-gaap	Operating Leases Future Minimum Payments Due In Three Years OperatingLeasesFutureMinimumPaymentsDueInThreeYears	13732000	USD
CY2013Q4	us-gaap	Operating Leases Future Minimum Payments Due In Two Years OperatingLeasesFutureMinimumPaymentsDueInTwoYears	13507000	USD
CY2013Q4	us-gaap	Operating Leases Future Minimum Payments Due Thereafter OperatingLeasesFutureMinimumPaymentsDueThereafter	899187000	USD
CY2013Q4	us-gaap	Operating Leases Future Minimum Payments Receivable Current OperatingLeasesFutureMinimumPaymentsReceivableCurrent	1716754000	USD
CY2013Q4	us-gaap	Operating Leases Future Minimum Payments Receivable In Five Years OperatingLeasesFutureMinimumPaymentsReceivableInFiveYears	1342157000	USD
CY2013Q4	us-gaap	Operating Leases Future Minimum Payments Receivable In Four Years OperatingLeasesFutureMinimumPaymentsReceivableInFourYears	1510645000	USD
CY2013Q4	us-gaap	Operating Leases Future Minimum Payments Receivable In Three Years OperatingLeasesFutureMinimumPaymentsReceivableInThreeYears	1660890000	USD
CY2013Q4	us-gaap	Operating Leases Future Minimum Payments Receivable In Two Years OperatingLeasesFutureMinimumPaymentsReceivableInTwoYears	1706282000	USD
CY2013Q4	us-gaap	Operating Leases Future Minimum Payments Receivable Thereafter OperatingLeasesFutureMinimumPaymentsReceivableThereafter	6674466000	USD
CY2011	us-gaap	Operating Leases Income Statement Lease Revenue OperatingLeasesIncomeStatementLeaseRevenue	1376278000	USD
CY2013	us-gaap	Operating Leases Income Statement Lease Revenue OperatingLeasesIncomeStatementLeaseRevenue	1675412000	USD
CY2012	us-gaap	Operating Leases Income Statement Lease Revenue OperatingLeasesIncomeStatementLeaseRevenue	1457834000	USD
CY2011	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	2595000	USD
CY2013	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	2513000	USD
CY2012	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	2594000	USD
CY2012	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Noncontrolling Interest OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToNoncontrollingInterest	273000	USD
CY2013	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Noncontrolling Interest OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToNoncontrollingInterest	252000	USD
CY2011	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Noncontrolling Interest OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToNoncontrollingInterest	297000	USD
CY2013	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax	-2513000	USD
CY2011	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax	-2595000	USD
CY2012	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax	-2594000	USD
CY2011	us-gaap	Other Comprehensive Income Other Net Of Tax OtherComprehensiveIncomeOtherNetOfTax	2595000	USD
CY2012	us-gaap	Other Comprehensive Income Other Net Of Tax OtherComprehensiveIncomeOtherNetOfTax	2594000	USD
CY2013	us-gaap	Other Comprehensive Income Other Net Of Tax OtherComprehensiveIncomeOtherNetOfTax	2513000	USD
CY2012Q4	us-gaap	Other Liabilities OtherLiabilities	324613000	USD
CY2013Q4	us-gaap	Other Liabilities OtherLiabilities	578969000	USD
CY2013	us-gaap	Paid In Kind Interest PaidInKindInterest	2649000	USD
CY2012	us-gaap	Paid In Kind Interest PaidInKindInterest	43131000	USD
CY2011	us-gaap	Paid In Kind Interest PaidInKindInterest	54962000	USD
CY2013	us-gaap	Parking Revenue ParkingRevenue	97158000	USD
CY2011	us-gaap	Parking Revenue ParkingRevenue	80496000	USD
CY2012	us-gaap	Parking Revenue ParkingRevenue	89207000	USD
CY2011	us-gaap	Payments For Capital Improvements PaymentsForCapitalImprovements	61961000	USD
CY2013	us-gaap	Payments For Capital Improvements PaymentsForCapitalImprovements	73821000	USD
CY2012	us-gaap	Payments For Capital Improvements PaymentsForCapitalImprovements	49943000	USD
CY2011	us-gaap	Payments For Proceeds From Deposits On Real Estate Acquisitions PaymentsForProceedsFromDepositsOnRealEstateAcquisitions	-10000000	USD
CY2013	us-gaap	Payments For Proceeds From Deposits On Real Estate Acquisitions PaymentsForProceedsFromDepositsOnRealEstateAcquisitions	0	USD
CY2012	us-gaap	Payments For Proceeds From Deposits On Real Estate Acquisitions PaymentsForProceedsFromDepositsOnRealEstateAcquisitions	0	USD
CY2011	us-gaap	Payments For Proceeds From Mortgage Deposits PaymentsForProceedsFromMortgageDeposits	14500000	USD
CY2013	us-gaap	Payments For Proceeds From Mortgage Deposits PaymentsForProceedsFromMortgageDeposits	0	USD
CY2012	us-gaap	Payments For Proceeds From Mortgage Deposits PaymentsForProceedsFromMortgageDeposits	0	USD
CY2012	us-gaap	Payments For Tenant Improvements PaymentsForTenantImprovements	139662000	USD
CY2011	us-gaap	Payments For Tenant Improvements PaymentsForTenantImprovements	76320000	USD
CY2013	us-gaap	Payments For Tenant Improvements PaymentsForTenantImprovements	105425000	USD
CY2011	us-gaap	Payments Of Dividends PaymentsOfDividends	332597000	USD
CY2013	us-gaap	Payments Of Dividends PaymentsOfDividends	451118000	USD
CY2012	us-gaap	Payments Of Dividends PaymentsOfDividends	372899000	USD
CY2012	us-gaap	Payments Of Financing Costs PaymentsOfFinancingCosts	8468000	USD
CY2011	us-gaap	Payments Of Financing Costs PaymentsOfFinancingCosts	15970000	USD
CY2013	us-gaap	Payments Of Financing Costs PaymentsOfFinancingCosts	15195000	USD
CY2011	us-gaap	Payments To Acquire And Develop Real Estate PaymentsToAcquireAndDevelopRealEstate	112180000	USD
CY2013	us-gaap	Payments To Acquire And Develop Real Estate PaymentsToAcquireAndDevelopRealEstate	522900000	USD
CY2012	us-gaap	Payments To Acquire And Develop Real Estate PaymentsToAcquireAndDevelopRealEstate	788052000	USD
CY2013	us-gaap	Payments To Acquire Equity Method Investments PaymentsToAcquireEquityMethodInvestments	0	USD
CY2011	us-gaap	Payments To Acquire Equity Method Investments PaymentsToAcquireEquityMethodInvestments	17970000	USD
CY2012	us-gaap	Payments To Acquire Equity Method Investments PaymentsToAcquireEquityMethodInvestments	6214000	USD
CY2011	us-gaap	Payments To Acquire Marketable Securities PaymentsToAcquireMarketableSecurities	1259000	USD
CY2013	us-gaap	Payments To Acquire Marketable Securities PaymentsToAcquireMarketableSecurities	1558000	USD
CY2012	us-gaap	Payments To Acquire Marketable Securities PaymentsToAcquireMarketableSecurities	1235000	USD
CY2012	us-gaap	Payments To Minority Shareholders PaymentsToMinorityShareholders	5922000	USD
CY2013	us-gaap	Payments To Minority Shareholders PaymentsToMinorityShareholders	9624000	USD
CY2011	us-gaap	Payments To Minority Shareholders PaymentsToMinorityShareholders	2007000	USD
CY2011	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	0	USD
CY2012	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	0	USD
CY2013	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	8057000	USD
CY2013Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.01
CY2012Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.01
CY2012Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	50000000	shares
CY2013Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	50000000	shares
CY2012Q4	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0	shares
CY2013Q4	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0	shares
CY2013Q4	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	0	shares
CY2012Q4	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	0	shares
CY2012Q4	us-gaap	Preferred Stock Value PreferredStockValue	0	USD
CY2013Q4	us-gaap	Preferred Stock Value PreferredStockValue	200000000	USD
CY2012Q4	us-gaap	Prepaid Expense And Other Assets PrepaidExpenseAndOtherAssets	90610000	USD
CY2013Q4	us-gaap	Prepaid Expense And Other Assets PrepaidExpenseAndOtherAssets	184477000	USD
CY2013	us-gaap	Prior Period Reclassification Adjustment PriorPeriodReclassificationAdjustment	8100000	USD
CY2012	us-gaap	Prior Period Reclassification Adjustment PriorPeriodReclassificationAdjustment	7700000	USD
CY2011	us-gaap	Prior Period Reclassification Adjustment PriorPeriodReclassificationAdjustment	7500000	USD
CY2011	us-gaap	Proceeds From Issuance Of Preferred Stock And Preference Stock ProceedsFromIssuanceOfPreferredStockAndPreferenceStock	0	USD
CY2012	us-gaap	Proceeds From Issuance Of Preferred Stock And Preference Stock ProceedsFromIssuanceOfPreferredStockAndPreferenceStock	0	USD
CY2013	us-gaap	Proceeds From Issuance Of Preferred Stock And Preference Stock ProceedsFromIssuanceOfPreferredStockAndPreferenceStock	193623000	USD
CY2013Q1	us-gaap	Proceeds From Issuance Of Preferred Stock And Preference Stock ProceedsFromIssuanceOfPreferredStockAndPreferenceStock	193600000	USD
CY2013	us-gaap	Proceeds From Issuance Of Secured Debt ProceedsFromIssuanceOfSecuredDebt	0	USD
CY2011	us-gaap	Proceeds From Issuance Of Secured Debt ProceedsFromIssuanceOfSecuredDebt	1178306000	USD
CY2012	us-gaap	Proceeds From Issuance Of Secured Debt ProceedsFromIssuanceOfSecuredDebt	0	USD
CY2012	us-gaap	Proceeds From Issuance Of Unsecured Debt ProceedsFromIssuanceOfUnsecuredDebt	997790000	USD
CY2013	us-gaap	Proceeds From Issuance Of Unsecured Debt ProceedsFromIssuanceOfUnsecuredDebt	1194753000	USD
CY2011	us-gaap	Proceeds From Issuance Of Unsecured Debt ProceedsFromIssuanceOfUnsecuredDebt	848019000	USD
CY2012	us-gaap	Proceeds From Issuance Or Sale Of Equity ProceedsFromIssuanceOrSaleOfEquity	226000	USD
CY2011	us-gaap	Proceeds From Issuance Or Sale Of Equity ProceedsFromIssuanceOrSaleOfEquity	9667000	USD
CY2013	us-gaap	Proceeds From Issuance Or Sale Of Equity ProceedsFromIssuanceOrSaleOfEquity	-334000	USD
CY2013	us-gaap	Proceeds From Sale Of Equity Method Investments ProceedsFromSaleOfEquityMethodInvestments	225862000	USD
CY2012	us-gaap	Proceeds From Sale Of Real Estate Heldforinvestment ProceedsFromSaleOfRealEstateHeldforinvestment	61963000	USD
CY2012	us-gaap	Profit Loss ProfitLoss	332139000	USD
CY2012	us-gaap	Proceeds From Sale Of Equity Method Investments ProceedsFromSaleOfEquityMethodInvestments	3557000	USD
CY2011	us-gaap	Proceeds From Sale Of Equity Method Investments ProceedsFromSaleOfEquityMethodInvestments	140505000	USD
CY2011	us-gaap	Proceeds From Sale Of Real Estate Heldforinvestment ProceedsFromSaleOfRealEstateHeldforinvestment	0	USD
CY2013	us-gaap	Proceeds From Sale Of Real Estate Heldforinvestment ProceedsFromSaleOfRealEstateHeldforinvestment	250078000	USD
CY2013	us-gaap	Profit Loss ProfitLoss	841440000	USD
CY2011	us-gaap	Profit Loss ProfitLoss	313826000	USD
CY2013	us-gaap	Quantifying Misstatement In Current Year Financial Statements Amount QuantifyingMisstatementInCurrentYearFinancialStatementsAmount	3200000	USD
CY2013Q4	us-gaap	Real Estate Accumulated Depreciation RealEstateAccumulatedDepreciation	3145701000	USD
CY2013Q4	us-gaap	Real Estate And Accumulated Depreciation Amount Of Encumbrances RealEstateAndAccumulatedDepreciationAmountOfEncumbrances	4449734000	USD
CY2013Q4	us-gaap	Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements	12682514000	USD
CY2013Q4	us-gaap	Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Carrying Costs RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts	4019372000	USD
CY2013Q4	us-gaap	Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements	10631057000	USD
CY2013Q4	us-gaap	Real Estate And Accumulated Depreciation Initial Cost Of Land RealEstateAndAccumulatedDepreciationInitialCostOfLand	4303172000	USD
CY2013	us-gaap	Real Estate And Accumulated Depreciation Life Used For Depreciation1 RealEstateAndAccumulatedDepreciationLifeUsedForDepreciation1	P40Y0M0D
CY2013Q4	us-gaap	Real Estate Gross At Carrying Value RealEstateGrossAtCarryingValue	18953601000	USD
CY2013Q4	us-gaap	Real Estate Investment Property Accumulated Depreciation RealEstateInvestmentPropertyAccumulatedDepreciation	3161571000	USD
CY2012Q4	us-gaap	Real Estate Investment Property Accumulated Depreciation RealEstateInvestmentPropertyAccumulatedDepreciation	2934160000	USD
CY2012Q4	us-gaap	Real Estate Investment Property At Cost RealEstateInvestmentPropertyAtCost	14893328000	USD
CY2013Q4	us-gaap	Real Estate Investment Property At Cost RealEstateInvestmentPropertyAtCost	18978765000	USD
CY2013Q4	us-gaap	Real Estate Investment Property Net RealEstateInvestmentPropertyNet	15817194000	USD
CY2012Q4	us-gaap	Real Estate Investment Property Net RealEstateInvestmentPropertyNet	11959168000	USD
CY2013	us-gaap	Real Estate Revenue Net RealEstateRevenueNet	2065514000	USD
CY2011	us-gaap	Real Estate Revenue Net RealEstateRevenueNet	1654857000	USD
CY2012	us-gaap	Real Estate Revenue Net RealEstateRevenueNet	1775211000	USD
CY2013	us-gaap	Repayments Of Convertible Debt RepaymentsOfConvertibleDebt	393468000	USD
CY2012	us-gaap	Repayments Of Convertible Debt RepaymentsOfConvertibleDebt	507434000	USD
CY2013Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	800000	USD
CY2011	us-gaap	Repayments Of Convertible Debt RepaymentsOfConvertibleDebt	44586000	USD
CY2011	us-gaap	Repayments Of Secured Debt RepaymentsOfSecuredDebt	1251841000	USD
CY2012	us-gaap	Repayments Of Secured Debt RepaymentsOfSecuredDebt	253877000	USD
CY2013	us-gaap	Repayments Of Secured Debt RepaymentsOfSecuredDebt	80311000	USD
CY2013	us-gaap	Repayments Of Unsecured Debt RepaymentsOfUnsecuredDebt	0	USD
CY2011	us-gaap	Repayments Of Unsecured Debt RepaymentsOfUnsecuredDebt	0	USD
CY2012	us-gaap	Repayments Of Unsecured Debt RepaymentsOfUnsecuredDebt	224261000	USD
CY2013Q4	us-gaap	Restricted Cash And Cash Equivalents At Carrying Value RestrictedCashAndCashEquivalentsAtCarryingValue	57201000	USD
CY2012Q4	us-gaap	Restricted Cash And Cash Equivalents At Carrying Value RestrictedCashAndCashEquivalentsAtCarryingValue	55181000	USD
CY2013Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	-108552000	USD
CY2012Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	-109985000	USD
CY2013	us-gaap	Revenue From Leased And Owned Hotels RevenueFromLeasedAndOwnedHotels	40330000	USD
CY2011	us-gaap	Revenue From Leased And Owned Hotels RevenueFromLeasedAndOwnedHotels	34529000	USD
CY2012	us-gaap	Revenue From Leased And Owned Hotels RevenueFromLeasedAndOwnedHotels	37915000	USD
CY2011	us-gaap	Revenues Revenues	1722792000	USD
CY2012	us-gaap	Revenues Revenues	1847186000	USD
CY2013	us-gaap	Revenues Revenues	2135539000	USD
CY2013Q4	us-gaap	Revenues Revenues	576199000	USD
CY2013Q3	us-gaap	Revenues Revenues	571481000	USD
CY2013Q2	us-gaap	Revenues Revenues	510033000	USD
CY2013Q1	us-gaap	Revenues Revenues	477826000	USD
CY2012Q4	us-gaap	Revenues Revenues	478047000	USD
CY2012Q2	us-gaap	Revenues Revenues	466197000	USD
CY2012Q1	us-gaap	Revenues Revenues	438722000	USD
CY2012Q3	us-gaap	Revenues Revenues	464220000	USD
CY2012Q4	us-gaap	Secured Debt SecuredDebt	3102485000	USD
CY2013Q4	us-gaap	Secured Debt SecuredDebt	4449734000	USD
CY2012Q4	us-gaap	Senior Notes SeniorNotes	4639528000	USD
CY2013Q4	us-gaap	Senior Notes SeniorNotes	5835854000	USD
CY2011	us-gaap	Share Based Compensation ShareBasedCompensation	29672000	USD
CY2013	us-gaap	Share Based Compensation ShareBasedCompensation	45155000	USD
CY2012	us-gaap	Share Based Compensation ShareBasedCompensation	29679000	USD
CY2011Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber	13633	shares
CY2012Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber	91496	shares
CY2012Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice	98.92
CY2011Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice	54.32
CY2012	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures And Expirations In Period Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice	100.15
CY2011	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures And Expirations In Period Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice	0
CY2013	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures And Expirations In Period Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice	0.00
CY2013	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod	0	shares
CY2012	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod	-24280	shares
CY2011	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod	0	shares
CY2011	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod	146844	shares
CY2013	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod	252220	shares
CY2012	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod	186007	shares
CY2012	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	107.23
CY2013	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	104.50
CY2011	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	92.71
CY2012Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	294527	shares
CY2013Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	558823	shares
CY2011Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	89.35
CY2011Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	155623	shares
CY2010Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	32.65
CY2013Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	100.43
CY2012Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	101.06
CY2010Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	324938	shares
CY2012	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	22823	shares
CY2013	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	0	shares
CY2011	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	316159	shares
CY2013	us-gaap	Stock Issued During Period Value Conversion Of Convertible Securities StockIssuedDuringPeriodValueConversionOfConvertibleSecurities	43834000	USD
CY2011	us-gaap	Stock Issued During Period Value Conversion Of Convertible Securities StockIssuedDuringPeriodValueConversionOfConvertibleSecurities	0	USD
CY2012	us-gaap	Stock Issued During Period Value Conversion Of Convertible Securities StockIssuedDuringPeriodValueConversionOfConvertibleSecurities	0	USD
CY2011	us-gaap	Stock Issued During Period Value Conversion Of Units StockIssuedDuringPeriodValueConversionOfUnits	0	USD
CY2012	us-gaap	Stock Issued During Period Value Conversion Of Units StockIssuedDuringPeriodValueConversionOfUnits	0	USD
CY2013	us-gaap	Stock Issued During Period Value Conversion Of Units StockIssuedDuringPeriodValueConversionOfUnits	0	USD
CY2013	us-gaap	Stock Issued During Period Value Employee Stock Purchase Plan StockIssuedDuringPeriodValueEmployeeStockPurchasePlan	681000	USD
CY2012	us-gaap	Stock Issued During Period Value Employee Stock Purchase Plan StockIssuedDuringPeriodValueEmployeeStockPurchasePlan	781000	USD
CY2011	us-gaap	Stock Issued During Period Value Employee Stock Purchase Plan StockIssuedDuringPeriodValueEmployeeStockPurchasePlan	620000	USD
CY2012	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	247027000	USD
CY2011	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	439037000	USD
CY2012Q4	us-gaap	Stockholders Equity StockholdersEquity	5097065000	USD
CY2013Q4	us-gaap	Stockholders Equity StockholdersEquity	5741153000	USD
CY2012Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	5634854000	USD
CY2013Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	7043618000	USD
CY2010Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	4964193000	USD
CY2011Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	5413516000	USD
CY2012	us-gaap	Straight Line Rent StraightLineRent	77363000	USD
CY2013	us-gaap	Straight Line Rent StraightLineRent	59972000	USD
CY2011	us-gaap	Straight Line Rent StraightLineRent	79992000	USD
CY2013	us-gaap	Straight Line Rent Adjustments StraightLineRentAdjustments	-65800000	USD
CY2011	us-gaap	Straight Line Rent Adjustments StraightLineRentAdjustments	-77000000	USD
CY2012	us-gaap	Straight Line Rent Adjustments StraightLineRentAdjustments	-77600000	USD
CY2012Q4	us-gaap	Subordinated Debt SubordinatedDebt	0	USD
CY2013Q4	us-gaap	Subordinated Debt SubordinatedDebt	311040000	USD
CY2012Q4	us-gaap	Temporary Equity Carrying Amount Attributable To Noncontrolling Interest TemporaryEquityCarryingAmountAttributableToNoncontrollingInterest	110876000	USD
CY2013Q4	us-gaap	Temporary Equity Carrying Amount Attributable To Noncontrolling Interest TemporaryEquityCarryingAmountAttributableToNoncontrollingInterest	51312000	USD
CY2012	us-gaap	Tenant Reimbursements TenantReimbursements	228170000	USD
CY2013	us-gaap	Tenant Reimbursements TenantReimbursements	292944000	USD
CY2011	us-gaap	Tenant Reimbursements TenantReimbursements	198083000	USD
CY2011	us-gaap	Transfer Mortgage Payable TransferMortgagePayable	0	USD
CY2013	us-gaap	Transfer Mortgage Payable TransferMortgagePayable	25000000	USD
CY2012	us-gaap	Transfer Mortgage Payable TransferMortgagePayable	0	USD
CY2013	us-gaap	Transfer Of Other Real Estate TransferOfOtherRealEstate	7508000	USD
CY2012	us-gaap	Transfer Of Other Real Estate TransferOfOtherRealEstate	0	USD
CY2011	us-gaap	Transfer Of Other Real Estate TransferOfOtherRealEstate	0	USD
CY2013Q4	us-gaap	Treasury Stock Shares TreasuryStockShares	78900	shares
CY2012Q4	us-gaap	Treasury Stock Shares TreasuryStockShares	78900	shares
CY2012Q4	us-gaap	Treasury Stock Value TreasuryStockValue	2722000	USD
CY2013Q4	us-gaap	Treasury Stock Value TreasuryStockValue	2722000	USD
CY2013	us-gaap	Use Of Estimates UseOfEstimates	<div style="font-family:Times New Roman;font-size:10pt;"><div style="line-height:120%;text-indent:16px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-style:italic;">Use of Estimates in the Preparation of Financial Statements</font></div><div style="line-height:120%;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;"> </font></div><div style="line-height:120%;text-indent:32px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenue and expenses during the reporting period. These estimates include such items as depreciation and allowances for doubtful accounts. Actual results could differ from those estimates.</font></div></div>
CY2012	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	150711000	shares
CY2011	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	146218000	shares
CY2013	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	152521000	shares
CY2012	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	150120000	shares
CY2013	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	152201000	shares
CY2011	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	145693000	shares
CY2011	bxp	Above And Below Market Rent Adjustments AboveAndBelowMarketRentAdjustments	10800000	USD
CY2013	bxp	Above And Below Market Rent Adjustments AboveAndBelowMarketRentAdjustments	28000000	USD
CY2012	bxp	Above And Below Market Rent Adjustments AboveAndBelowMarketRentAdjustments	14600000	USD
CY2011	bxp	Accelerated Compensation Expenses Related To2008 Opp Units AcceleratedCompensationExpensesRelatedTo2008OppUnits	4300000	USD
CY2013Q4	bxp	Accrued Rental Income Allowance AccruedRentalIncomeAllowance	3636000	USD
CY2012Q4	bxp	Accrued Rental Income Allowance AccruedRentalIncomeAllowance	1571000	USD
CY2013Q4	bxp	Accumulated Amortization Leasing And Financing Costs AccumulatedAmortizationLeasingAndFinancingCosts	375552000	USD
CY2012Q4	bxp	Accumulated Amortization Leasing And Financing Costs AccumulatedAmortizationLeasingAndFinancingCosts	293187000	USD
CY2013Q4	bxp	Accumulated Depreciation Furniture Fixtures And Equipment AccumulatedDepreciationFurnitureFixturesAndEquipment	15870000	USD
CY2012	bxp	Acquisition Date Fair Value Of Redeemable Interest AcquisitionDateFairValueOfRedeemableInterest	98787000	USD
CY2011	bxp	Additions To Real Estate Included In Accounts Payable And Accrued Expenses AdditionsToRealEstateIncludedInAccountsPayableAndAccruedExpenses	10767000	USD
CY2012	bxp	Additions To Real Estate Included In Accounts Payable And Accrued Expenses AdditionsToRealEstateIncludedInAccountsPayableAndAccruedExpenses	14059000	USD
CY2013	bxp	Additions To Real Estate Included In Accounts Payable And Accrued Expenses AdditionsToRealEstateIncludedInAccountsPayableAndAccruedExpenses	19824000	USD
CY2008Q3	bxp	Adjusted Exchange Price Due To Capped Call AdjustedExchangePriceDueToCappedCall	137.17
CY2013Q4	bxp	Adjusted Exchange Price Due To Capped Call At Period End AdjustedExchangePriceDueToCappedCallAtPeriodEnd	130.21
CY2012	bxp	Adjustment To Reflect Redeemable Interest At Redemption Value AdjustmentToReflectRedeemableInterestAtRedemptionValue	2522000	USD
CY2013	bxp	Adjustment To Reflect Redeemable Interest At Redemption Value AdjustmentToReflectRedeemableInterestAtRedemptionValue	8475000	USD
	bxp	Age Of Employee For Supplemental Retirement Contribution AgeOfEmployeeForSupplementalRetirementContribution	40	age
CY2013	bxp	Aggregate Consideration Dueto Consolidation AggregateConsiderationDuetoConsolidation	3356000000	USD
CY2012	bxp	Aggregate Consideration Dueto Consolidation AggregateConsiderationDuetoConsolidation	0	USD
CY2011	bxp	Aggregate Consideration Dueto Consolidation AggregateConsiderationDuetoConsolidation	0	USD
CY2013	bxp	Allocationofundistributedearningstoparticipatingsecurities Allocationofundistributedearningstoparticipatingsecurities	-160000	USD
CY2013	bxp	Allocationofundistributedearningstoparticipatingsecuritiespershares Allocationofundistributedearningstoparticipatingsecuritiespershares	0.00
CY2014Q1	bxp	Amount Of Earthquake Insurance Provided By Ixp Llc As Direct Insurer San Francisco AmountOfEarthquakeInsuranceProvidedByIxpLlcAsDirectInsurerSanFrancisco	20000000	USD
CY2014Q1	bxp	Annual Aggregate Limit Of Earth Quake Insurance San Francisco AnnualAggregateLimitOfEarthQuakeInsuranceSanFrancisco	120000000	USD
CY2012	bxp	Annual Supplemental Retirement Contribution And Credit Total AnnualSupplementalRetirementContributionAndCreditTotal	78000	USD
CY2013	bxp	Annual Supplemental Retirement Contribution And Credit Total AnnualSupplementalRetirementContributionAndCreditTotal	60000	USD
CY2011	bxp	Annual Supplemental Retirement Contribution And Credit Total AnnualSupplementalRetirementContributionAndCreditTotal	62000	USD
CY2013Q4	bxp	Area Of Undeveloped Land AreaOfUndevelopedLand	503.6	acre
CY2011	bxp	At Market Stock Offering Program Net Proceeds AtMarketStockOfferingProgramNetProceeds	439037000	USD
CY2012	bxp	At Market Stock Offering Program Net Proceeds AtMarketStockOfferingProgramNetProceeds	247027000	USD
CY2013	bxp	At Market Stock Offering Program Net Proceeds AtMarketStockOfferingProgramNetProceeds	0	USD
CY2013Q4	bxp	Cash Fdic Insured Limit CashFdicInsuredLimit	250000	USD
CY2013Q1	bxp	Cash Payment Related To Transition Agreement CashPaymentRelatedToTransitionAgreement	6700000	USD
CY2008Q3	bxp	Closing Price Of Common Stock Per Share ClosingPriceOfCommonStockPerShare	97.98
CY2013Q4	bxp	Common Stock Conversion Rate CommonStockConversionRate	1	shares
CY2013	bxp	Company Annual Taxable Income Distribution Percentage CompanyAnnualTaxableIncomeDistributionPercentage	1.00
CY2013Q4	bxp	Contractual Tax Agreements Number Of Properties ContractualTaxAgreementsNumberOfProperties	3	Buildings
CY2013	bxp	Conversion Of Redeemable Preferred Units To Common Units ConversionOfRedeemablePreferredUnitsToCommonUnits	16494000	USD
CY2011	bxp	Conversion Of Redeemable Preferred Units To Common Units ConversionOfRedeemablePreferredUnitsToCommonUnits	0	USD
CY2012	bxp	Conversion Of Redeemable Preferred Units To Common Units ConversionOfRedeemablePreferredUnitsToCommonUnits	5852000	USD
CY2013	bxp	Conversions Of Noncontrolling Interests To Stockholders Equity ConversionsOfNoncontrollingInterestsToStockholdersEquity	-30291000	USD
CY2012	bxp	Conversions Of Noncontrolling Interests To Stockholders Equity ConversionsOfNoncontrollingInterestsToStockholdersEquity	-34621000	USD
CY2011	bxp	Conversions Of Noncontrolling Interests To Stockholders Equity ConversionsOfNoncontrollingInterestsToStockholdersEquity	-85498000	USD
CY2013	bxp	Conversions On Series Two Preferred Units ConversionsOnSeriesTwoPreferredUnits	16494000	USD
CY2012	bxp	Conversions On Series Two Preferred Units ConversionsOnSeriesTwoPreferredUnits	5852000	USD
CY2012Q4	bxp	Cumulative Liability Related To Fair Value Of Debt Adjustment CumulativeLiabilityRelatedToFairValueOfDebtAdjustment	38600000	USD
CY2013Q4	bxp	Cumulative Liability Related To Fair Value Of Debt Adjustment CumulativeLiabilityRelatedToFairValueOfDebtAdjustment	191200000	USD
CY2013Q4	bxp	Debt Instrument Convertible Initial Carrying Amount Of Equity Component DebtInstrumentConvertibleInitialCarryingAmountOfEquityComponent	230300000	USD
CY2012Q4	bxp	Deferred Costs Gross DeferredCostsGross	881422000	USD
CY2013Q4	bxp	Deferred Costs Gross DeferredCostsGross	1260002000	USD
CY2013Q4	bxp	Deferred Financing Costs Equity Component DeferredFinancingCostsEquityComponent	1000000	USD
CY2013Q4	bxp	Deferred Stock Units Outstanding DeferredStockUnitsOutstanding	83995
CY2012Q4	bxp	Deferred Stock Units Outstanding DeferredStockUnitsOutstanding	76682
CY2013	bxp	Development And Management Services DevelopmentAndManagementServices	29695000	USD
CY2012	bxp	Development And Management Services DevelopmentAndManagementServices	34060000	USD
CY2011	bxp	Development And Management Services DevelopmentAndManagementServices	33406000	USD
CY2013	bxp	Dilutive Securities Per Share Amount DilutiveSecuritiesPerShareAmount	-0.01
CY2011	bxp	Dilutive Securities Per Share Amount DilutiveSecuritiesPerShareAmount	-0.01
CY2012	bxp	Dilutive Securities Per Share Amount DilutiveSecuritiesPerShareAmount	-0.01
CY2013	bxp	Discontinued Operation Gain Loss On Forgiveness Of Debt DiscontinuedOperationGainLossOnForgivenessOfDebt	20182000	USD
CY2011	bxp	Discontinued Operation Gain Loss On Forgiveness Of Debt DiscontinuedOperationGainLossOnForgivenessOfDebt	0	USD
CY2012	bxp	Discontinued Operation Gain Loss On Forgiveness Of Debt DiscontinuedOperationGainLossOnForgivenessOfDebt	0	USD
CY2013	bxp	Distributions On Redeemable Property Partnership DistributionsOnRedeemablePropertyPartnership	4585000	USD
CY2012	bxp	Distributions On Redeemable Property Partnership DistributionsOnRedeemablePropertyPartnership	3032000	USD
CY2012	bxp	Dividends Treatment For Federal Tax Purposes DividendsTreatmentForFederalTaxPurposes	2.37
CY2011	bxp	Dividends Treatment For Federal Tax Purposes DividendsTreatmentForFederalTaxPurposes	2.11
CY2013	bxp	Dividends Treatment For Federal Tax Purposes DividendsTreatmentForFederalTaxPurposes	4.75
CY2011	bxp	Dividends Treatment For Federal Tax Purposes Percentage DividendsTreatmentForFederalTaxPurposesPercentage	1.0000
CY2012	bxp	Dividends Treatment For Federal Tax Purposes Percentage DividendsTreatmentForFederalTaxPurposesPercentage	1.0000
CY2013	bxp	Dividends Treatment For Federal Tax Purposes Percentage DividendsTreatmentForFederalTaxPurposesPercentage	1.0000
CY2014Q1	bxp	Earthquake Coverage Included In Builders Risk Policy For535 Mission EarthquakeCoverageIncludedInBuildersRiskPolicyFor535Mission	15000000	USD
CY2014Q1	bxp	Earthquake Coverage Included In Builders Risk Policy For Below Gradeimprovementsfor Transbay Tower EarthquakeCoverageIncludedInBuildersRiskPolicyForBelowGradeimprovementsforTransbayTower	15000000	USD
CY2014Q1	bxp	Earthquake Deductible Insurance Percentage Of Value Of Affected Property San Francisco EarthquakeDeductibleInsurancePercentageOfValueOfAffectedPropertySanFrancisco	0.05
CY2013	bxp	Eligibility Period For401 K Savings Plan In Months EligibilityPeriodFor401KSavingsPlanInMonths	3	M
CY2012	bxp	Equity Profit Loss EquityProfitLoss	326839000	USD
CY2011	bxp	Equity Profit Loss EquityProfitLoss	310487000	USD
CY2013	bxp	Equity Profit Loss EquityProfitLoss	828757000	USD
CY2012Q4	bxp	Excess Stock Par Or Stated Value Per Share ExcessStockParOrStatedValuePerShare	0.01
CY2013Q4	bxp	Excess Stock Par Or Stated Value Per Share ExcessStockParOrStatedValuePerShare	0.01
CY2012Q4	bxp	Excess Stock Value ExcessStockValue	0	USD
CY2013Q4	bxp	Excess Stock Value ExcessStockValue	0	USD
CY2012	bxp	Exercised Weighted Averge Exercise Price ExercisedWeightedAvergeExercisePrice	72.42
CY2011	bxp	Exercised Weighted Averge Exercise Price ExercisedWeightedAvergeExercisePrice	32.63
CY2013	bxp	Exercised Weighted Averge Exercise Price ExercisedWeightedAvergeExercisePrice	0.00
CY2013	bxp	Expiration Of Tax Protection For General Motors Buidling ExpirationOfTaxProtectionForGeneralMotorsBuidling	2017-06-09
CY2013Q4	bxp	Fixed Charge Coverage Ratio Minimum. FixedChargeCoverageRatioMinimum.	1.40
CY2012	bxp	Gainon Consolidationof Joint Ventures GainonConsolidationofJointVentures	0	USD
CY2011	bxp	Gainon Consolidationof Joint Ventures GainonConsolidationofJointVentures	0	USD
CY2013	bxp	Gainon Consolidationof Joint Ventures GainonConsolidationofJointVentures	385991000	USD
CY2013	bxp	Ground Lease Expiration Date Maximum GroundLeaseExpirationDateMaximum	2068
CY2008Q3	bxp	Net Cost Of Capped Call Transaction NetCostOfCappedCallTransaction	44400000	USD
CY2011	bxp	Income Tax Reconciliation Book Tax Differences On Gains Losses From Capital Transactions IncomeTaxReconciliationBookTaxDifferencesOnGainsLossesFromCapitalTransactions	38443000	USD
CY2013	bxp	Income Tax Reconciliation Book Tax Differences On Gains Losses From Capital Transactions IncomeTaxReconciliationBookTaxDifferencesOnGainsLossesFromCapitalTransactions	124413000	USD
CY2012	bxp	Income Tax Reconciliation Book Tax Differences On Gains Losses From Capital Transactions IncomeTaxReconciliationBookTaxDifferencesOnGainsLossesFromCapitalTransactions	22408000	USD
CY2008Q3	bxp	Increment Of The Notes For Purposes Of Disclosing Exchange Rate IncrementOfTheNotesForPurposesOfDisclosingExchangeRate	1000	USD
CY2013Q4	bxp	Increment Of The Notes For Purposes Of Disclosing Exchange Rate IncrementOfTheNotesForPurposesOfDisclosingExchangeRate	1000	USD
CY2008Q3	bxp	Initial Exchange Rate InitialExchangeRate	8.5051	shares
CY2013Q4	bxp	Insurance Policy Limit InsurancePolicyLimit	1000000000	USD
CY2011	bxp	Interest Expense Adjustment Related To Convertible Debt InterestExpenseAdjustmentRelatedToConvertibleDebt	38800000	USD
CY2013	bxp	Interest Expense Adjustment Related To Convertible Debt InterestExpenseAdjustmentRelatedToConvertibleDebt	23100000	USD
CY2012	bxp	Interest Expense Adjustment Related To Convertible Debt InterestExpenseAdjustmentRelatedToConvertibleDebt	29100000	USD
CY2013Q4	bxp	Interest Receivable From Related Party Note Receivable InterestReceivableFromRelatedPartyNoteReceivable	0	USD
CY2012Q4	bxp	Interest Receivable From Related Party Note Receivable InterestReceivableFromRelatedPartyNoteReceivable	104816000	USD
CY2013	bxp	Internal Leasing Salaries And Related Costs Capitalized InternalLeasingSalariesAndRelatedCostsCapitalized	5100000	USD
CY2012	bxp	Internal Leasing Salaries And Related Costs Capitalized InternalLeasingSalariesAndRelatedCostsCapitalized	5600000	USD
CY2011	bxp	Internal Leasing Salaries And Related Costs Capitalized InternalLeasingSalariesAndRelatedCostsCapitalized	4400000	USD
CY2012	bxp	Investmentinunconsolidatedjointventureelminateduponconsolidation Investmentinunconsolidatedjointventureelminateduponconsolidation	0	USD
CY2011	bxp	Investmentinunconsolidatedjointventureelminateduponconsolidation Investmentinunconsolidatedjointventureelminateduponconsolidation	0	USD
CY2013	bxp	Investmentinunconsolidatedjointventureelminateduponconsolidation Investmentinunconsolidatedjointventureelminateduponconsolidation	361808000	USD
CY2011	bxp	Issuance Of Restricted Securities To Employees And Directors IssuanceOfRestrictedSecuritiesToEmployeesAndDirectors	25087000	USD
CY2012	bxp	Issuance Of Restricted Securities To Employees And Directors IssuanceOfRestrictedSecuritiesToEmployeesAndDirectors	26198000	USD
CY2013	bxp	Issuance Of Restricted Securities To Employees And Directors IssuanceOfRestrictedSecuritiesToEmployeesAndDirectors	30077000	USD
CY2011	bxp	Land Improvements Contributed By Noncontrolling Property Partnership LandImprovementsContributedByNoncontrollingPropertyPartnership	0	USD
CY2013	bxp	Land Improvements Contributed By Noncontrolling Property Partnership LandImprovementsContributedByNoncontrollingPropertyPartnership	4546000	USD
CY2012	bxp	Land Improvements Contributed By Noncontrolling Property Partnership LandImprovementsContributedByNoncontrollingPropertyPartnership	0	USD
CY2013Q4	bxp	Letter Of Credit And Performance Obligation LetterOfCreditAndPerformanceObligation	13900000	USD
CY2013Q4	bxp	Leverage Ratio Maximum LeverageRatioMaximum	0.60
CY2013Q4	bxp	Leverage Ratio Maximum Increasing Limit LeverageRatioMaximumIncreasingLimit	0.65
CY2013Q4	bxp	Leverage Ratio Reduction Limit LeverageRatioReductionLimit	0.60
CY2013Q4	bxp	Leverage Ratio Reduction Period Years LeverageRatioReductionPeriodYears	1	Y
CY2014Q1	bxp	Ltip Units Issued LtipUnitsIssued	109718	shares
CY2013	bxp	Maximum Eligible Earnings As Established By Irs For Matching Contributions MaximumEligibleEarningsAsEstablishedByIrsForMatchingContributions	255000	USD
CY2012	bxp	Maximum Eligible Earnings As Established By Irs For Matching Contributions MaximumEligibleEarningsAsEstablishedByIrsForMatchingContributions	250000	USD
CY2011	bxp	Maximum Eligible Earnings As Established By Irs For Matching Contributions MaximumEligibleEarningsAsEstablishedByIrsForMatchingContributions	245000	USD
CY2013	bxp	Maximum Period After Construction Company Considers Construction Project As Substantially Completed In Years MaximumPeriodAfterConstructionCompanyConsidersConstructionProjectAsSubstantiallyCompletedInYears	1	Y
CY2013	bxp	Maximum Secured Debt Leverage Ratio MaximumSecuredDebtLeverageRatio	0.55
CY2013Q4	bxp	Maximum Unsecured Debt Leverage Ratio MaximumUnsecuredDebtLeverageRatio	0.60
CY2013Q4	bxp	Net Difference Between Tax Basis And Companys Assets And Liabilities NetDifferenceBetweenTaxBasisAndCompanysAssetsAndLiabilities	1700000000	USD
CY2012Q4	bxp	Mortgage Loans Accounted For At Fair Value Upon Assumption MortgageLoansAccountedForAtFairValueUponAssumption	951500000	USD
CY2013Q4	bxp	Mortgage Loans Accounted For At Fair Value Upon Assumption MortgageLoansAccountedForAtFairValueUponAssumption	2200000000	USD
CY2013	bxp	Net Activity From Stock Option And Incentive Plan Value NetActivityFromStockOptionAndIncentivePlanValue	35571000	USD
CY2011	bxp	Net Activity From Stock Option And Incentive Plan Value NetActivityFromStockOptionAndIncentivePlanValue	38719000	USD
CY2012	bxp	Net Activity From Stock Option And Incentive Plan Value NetActivityFromStockOptionAndIncentivePlanValue	29124000	USD
CY2011	bxp	Percentage Of Total Rental Expenses PercentageOfTotalRentalExpenses	1.0000
CY2012Q4	bxp	Net Difference Between Tax Basis And Companys Assets And Liabilities NetDifferenceBetweenTaxBasisAndCompanysAssetsAndLiabilities	800000000	USD
CY2012	bxp	Net Income Loss Available To Common Stockholders After Discontinued Operationsand Allocationofundistributed Earnings Basic NetIncomeLossAvailableToCommonStockholdersAfterDiscontinuedOperationsandAllocationofundistributedEarningsBasic	289650000	USD
CY2011	bxp	Net Income Loss Available To Common Stockholders After Discontinued Operationsand Allocationofundistributed Earnings Basic NetIncomeLossAvailableToCommonStockholdersAfterDiscontinuedOperationsandAllocationofundistributedEarningsBasic	272679000	USD
CY2013	bxp	Net Income Loss Available To Common Stockholders After Discontinued Operationsand Allocationofundistributed Earnings Basic NetIncomeLossAvailableToCommonStockholdersAfterDiscontinuedOperationsandAllocationofundistributedEarningsBasic	741594000	USD
CY2012	bxp	Net Loss For Redeemable Interest In Property Partnership NetLossForRedeemableInterestInPropertyPartnership	719000	USD
CY2013	bxp	Net Loss For Redeemable Interest In Property Partnership NetLossForRedeemableInterestInPropertyPartnership	1839000	USD
CY2013Q4	bxp	Net Of Adjustment For Equity Component Allocation NetOfAdjustmentForEquityComponentAllocation	2438000	USD
CY2012Q4	bxp	Net Of Adjustment For Equity Component Allocation NetOfAdjustmentForEquityComponentAllocation	25500000	USD
CY2011	bxp	Non Cash Portion Of Loss From Early Extinguishment Of Debt NonCashPortionOfLossFromEarlyExtinguishmentOfDebt	-1494000	USD
CY2012	bxp	Non Cash Portion Of Loss From Early Extinguishment Of Debt NonCashPortionOfLossFromEarlyExtinguishmentOfDebt	1000000	USD
CY2013	bxp	Non Cash Portion Of Loss From Early Extinguishment Of Debt NonCashPortionOfLossFromEarlyExtinguishmentOfDebt	264000	USD
CY2011	bxp	Notes Assumed Value NotesAssumedValue	143900000	USD
CY2012	bxp	Notes Assumed Value NotesAssumedValue	211250000	USD
CY2013	bxp	Notes Assumed Value NotesAssumedValue	0	USD
CY2011	bxp	Nterest Expense Decrease Due To Recording Mortgage Loans At Fair Value NterestExpenseDecreaseDueToRecordingMortgageLoansAtFairValue	9200000	USD
CY2013	bxp	Nterest Expense Decrease Due To Recording Mortgage Loans At Fair Value NterestExpenseDecreaseDueToRecordingMortgageLoansAtFairValue	34400000	USD
CY2012	bxp	Nterest Expense Decrease Due To Recording Mortgage Loans At Fair Value NterestExpenseDecreaseDueToRecordingMortgageLoansAtFairValue	7000000	USD
CY2013Q4	bxp	Number Of Mortgage Loans Accounted For Fair Value NumberOfMortgageLoansAccountedForFairValue	4
CY2012Q4	bxp	Number Of Mortgage Loans Accounted For Fair Value NumberOfMortgageLoansAccountedForFairValue	5
CY2013	bxp	Number Of Non Employee Directors Electing To Receive Deferred Stock Units NumberOfNonEmployeeDirectorsElectingToReceiveDeferredStockUnits	6	nonemployeedirectors
CY2014Q1	bxp	Number Of Series Of Preferred Units Outstanding NumberOfSeriesOfPreferredUnitsOutstanding	3	shares
CY2013	bxp	Number Of Tenants Above Concentration Amount NumberOfTenantsAboveConcentrationAmount	0	tenants
CY2011	bxp	Number Of Tenants Above Concentration Amount NumberOfTenantsAboveConcentrationAmount	0	tenants
CY2012	bxp	Number Of Tenants Above Concentration Amount NumberOfTenantsAboveConcentrationAmount	0	tenants
CY2013Q4	bxp	Op Unit Conversion Rate OpUnitConversionRate	1	shares
CY2013	bxp	Operating Income Loss From Reportable Segments OperatingIncomeLossFromReportableSegments	1334441000	USD
CY2012	bxp	Operating Income Loss From Reportable Segments OperatingIncomeLossFromReportableSegments	1145918000	USD
CY2011	bxp	Operating Income Loss From Reportable Segments OperatingIncomeLossFromReportableSegments	1090590000	USD
CY2013Q4	bxp	Operating Partnership Guarantee To Cover Liabilities Of Subsidiary OperatingPartnershipGuaranteeToCoverLiabilitiesOfSubsidiary	20000000	USD
CY2012Q4	bxp	Outsidemembersnotespayable Outsidemembersnotespayable	0	USD
CY2013Q4	bxp	Outsidemembersnotespayable Outsidemembersnotespayable	180000000	USD
CY2011	bxp	Paymentsforredemptionofpreferredunits Paymentsforredemptionofpreferredunits	0	USD
CY2013	bxp	Paymentsforredemptionofpreferredunits Paymentsforredemptionofpreferredunits	-43070000	USD
CY2012	bxp	Paymentsforredemptionofpreferredunits Paymentsforredemptionofpreferredunits	-18329000	USD
CY2013	bxp	Paymentstoacquirerepaynotesreceivable Paymentstoacquirerepaynotesreceivable	-12491000	USD
CY2012	bxp	Paymentstoacquirerepaynotesreceivable Paymentstoacquirerepaynotesreceivable	2049000	USD
CY2011	bxp	Paymentstoacquirerepaynotesreceivable Paymentstoacquirerepaynotesreceivable	10442000	USD
CY2013	bxp	Per Occurrence Limit For Nbcr Coverage PerOccurrenceLimitForNbcrCoverage	1000000000	USD
CY2014Q1	bxp	Per Occurrence Limit Of Earth Quake Insurance San Francisco PerOccurrenceLimitOfEarthQuakeInsuranceSanFrancisco	120000000	USD
CY2013	bxp	Percentage Of Total Net Operating Income PercentageOfTotalNetOperatingIncome	1.0000
CY2012	bxp	Percentage Of Total Net Operating Income PercentageOfTotalNetOperatingIncome	1.0000
CY2011	bxp	Percentage Of Total Net Operating Income PercentageOfTotalNetOperatingIncome	1.0000
CY2013	bxp	Percentage Of Total Rental Expenses PercentageOfTotalRentalExpenses	1.0000
CY2012	bxp	Percentage Of Total Rental Expenses PercentageOfTotalRentalExpenses	1.0000
CY2013	bxp	Percentage Of Total Revenue PercentageOfTotalRevenue	1.0000
CY2012	bxp	Percentage Of Total Revenue PercentageOfTotalRevenue	1.0000
CY2011	bxp	Percentage Of Total Revenue PercentageOfTotalRevenue	1.0000
CY2013	bxp	Preferred Cumulative Redeemable Stock Issued During Period Value New Issues PreferredCumulativeRedeemableStockIssuedDuringPeriodValueNewIssues	193623000	USD
CY2012	bxp	Preferred Units Issued In Connection With Acquisition Of Real Estate PreferredUnitsIssuedInConnectionWithAcquisitionOfRealEstate	79405000	USD
CY2011	bxp	Preferred Units Issued In Connection With Acquisition Of Real Estate PreferredUnitsIssuedInConnectionWithAcquisitionOfRealEstate	0	USD
CY2013	bxp	Preferred Units Issued In Connection With Acquisition Of Real Estate PreferredUnitsIssuedInConnectionWithAcquisitionOfRealEstate	0	USD
CY2008Q3	bxp	Premium Over Closing Price Due To Capped Call PremiumOverClosingPriceDueToCappedCall	0.40
CY2013	bxp	Probable Sale Term Of Property After Classified As Held For Sale Years ProbableSaleTermOfPropertyAfterClassifiedAsHeldForSaleYears	1	Y
CY2011	bxp	Proceeds From Land Transaction ProceedsFromLandTransaction	43887000	USD
CY2013	bxp	Proceeds From Land Transaction ProceedsFromLandTransaction	0	USD
CY2012	bxp	Proceeds From Land Transaction ProceedsFromLandTransaction	0	USD
CY2012	bxp	Proceeds From Mortgage Deposits Returned ProceedsFromMortgageDepositsReturned	0	USD
CY2013	bxp	Proceeds From Mortgage Deposits Returned ProceedsFromMortgageDepositsReturned	0	USD
CY2011	bxp	Proceeds From Mortgage Deposits Returned ProceedsFromMortgageDepositsReturned	14500000	USD
CY2013	bxp	Proceedsfromsaleofownershipinterestandcontributionsfromnoncontrollinginterestinpropertypartnerships Proceedsfromsaleofownershipinterestandcontributionsfromnoncontrollinginterestinpropertypartnerships	682617000	USD
CY2012	bxp	Proceedsfromsaleofownershipinterestandcontributionsfromnoncontrollinginterestinpropertypartnerships Proceedsfromsaleofownershipinterestandcontributionsfromnoncontrollinginterestinpropertypartnerships	0	USD
CY2011	bxp	Proceedsfromsaleofownershipinterestandcontributionsfromnoncontrollinginterestinpropertypartnerships Proceedsfromsaleofownershipinterestandcontributionsfromnoncontrollinginterestinpropertypartnerships	0	USD
CY2013	bxp	Proceedsfromsaleofownershipinterestandcontributionsfromnoncontrollinginterestsincludingnoncashportion Proceedsfromsaleofownershipinterestandcontributionsfromnoncontrollinginterestsincludingnoncashportion	687164000	USD
CY2013	bxp	Program Trigger Coinsurance ProgramTriggerCoinsurance	0.15
CY2013Q4	bxp	Program Trigger Value ProgramTriggerValue	100000000	USD
CY2012	bxp	Real Estate Accumulated Depreciation Depreciation Expense Excluding Furniture Fixtures And Equipment RealEstateAccumulatedDepreciationDepreciationExpenseExcludingFurnitureFixturesAndEquipment	367625000	USD
CY2011	bxp	Real Estate Accumulated Depreciation Depreciation Expense Excluding Furniture Fixtures And Equipment RealEstateAccumulatedDepreciationDepreciationExpenseExcludingFurnitureFixturesAndEquipment	362636000	USD
CY2013	bxp	Real Estate Accumulated Depreciation Depreciation Expense Excluding Furniture Fixtures And Equipment RealEstateAccumulatedDepreciationDepreciationExpenseExcludingFurnitureFixturesAndEquipment	419908000	USD
CY2010Q4	bxp	Real Estate Accumulated Depreciation Excluding Furniture Fixtures And Equipment RealEstateAccumulatedDepreciationExcludingFurnitureFixturesAndEquipment	2308665000	USD
CY2012Q4	bxp	Real Estate Accumulated Depreciation Excluding Furniture Fixtures And Equipment RealEstateAccumulatedDepreciationExcludingFurnitureFixturesAndEquipment	2919479000	USD
CY2011Q4	bxp	Real Estate Accumulated Depreciation Excluding Furniture Fixtures And Equipment RealEstateAccumulatedDepreciationExcludingFurnitureFixturesAndEquipment	2626324000	USD
CY2013Q4	bxp	Real Estate Accumulated Depreciation Excluding Furniture Fixtures And Equipment RealEstateAccumulatedDepreciationExcludingFurnitureFixturesAndEquipment	3145701000	USD
CY2012	bxp	Real Estate Accumulated Depreciation Real Estate Sold Excluding Furniture Fixtures And Equipment RealEstateAccumulatedDepreciationRealEstateSoldExcludingFurnitureFixturesAndEquipment	-74470000	USD
CY2011	bxp	Real Estate Accumulated Depreciation Real Estate Sold Excluding Furniture Fixtures And Equipment RealEstateAccumulatedDepreciationRealEstateSoldExcludingFurnitureFixturesAndEquipment	-44977000	USD
CY2013	bxp	Real Estate Accumulated Depreciation Real Estate Sold Excluding Furniture Fixtures And Equipment RealEstateAccumulatedDepreciationRealEstateSoldExcludingFurnitureFixturesAndEquipment	-193686000	USD
CY2013Q4	bxp	Real Estate Aggregate Accumulated Depreciation For Tax Purposes RealEstateAggregateAccumulatedDepreciationForTaxPurposes	2600000000	USD
CY2013Q4	bxp	Real Estate Aggregate Cost For Tax Purposes RealEstateAggregateCostForTaxPurposes	14800000000	USD
CY2013Q4	bxp	Real Estate And Accumulated Depreciation Carrying Amount Of Development And Construction In Progress RealEstateAndAccumulatedDepreciationCarryingAmountOfDevelopmentAndConstructionInProgress	1523179000	USD
CY2013Q4	bxp	Real Estate And Accumulated Depreciation Carrying Amount Of Land And Improvements RealEstateAndAccumulatedDepreciationCarryingAmountOfLandAndImprovements	4450532000	USD
CY2013Q4	bxp	Real Estate And Accumulated Depreciation Carrying Amount Of Land Held For Development RealEstateAndAccumulatedDepreciationCarryingAmountOfLandHeldForDevelopment	297376000	USD
CY2013	bxp	Real Estate And Accumulated Depreciation Description Of Property Location RealEstateAndAccumulatedDepreciationDescriptionOfPropertyLocation	Reston, VA
CY2013	bxp	Real Estate And Accumulated Depreciation Description Of Property Type RealEstateAndAccumulatedDepreciationDescriptionOfPropertyType	Office
CY2011	bxp	Real Estate Cost Of Real Estate Sold Excluding Furniture Fixtures And Equipment RealEstateCostOfRealEstateSoldExcludingFurnitureFixturesAndEquipment	-45863000	USD
CY2013	bxp	Real Estate Cost Of Real Estate Sold Excluding Furniture Fixtures And Equipment RealEstateCostOfRealEstateSoldExcludingFurnitureFixturesAndEquipment	-326908000	USD
CY2012	bxp	Real Estate Cost Of Real Estate Sold Excluding Furniture Fixtures And Equipment RealEstateCostOfRealEstateSoldExcludingFurnitureFixturesAndEquipment	-95809000	USD
CY2013Q4	bxp	Real Estate Gross At Carrying Value Excluding Furniture Fixtures And Equipment RealEstateGrossAtCarryingValueExcludingFurnitureFixturesAndEquipment	18953601000	USD
CY2012Q4	bxp	Real Estate Gross At Carrying Value Excluding Furniture Fixtures And Equipment RealEstateGrossAtCarryingValueExcludingFurnitureFixturesAndEquipment	14869887000	USD
CY2011Q4	bxp	Real Estate Gross At Carrying Value Excluding Furniture Fixtures And Equipment RealEstateGrossAtCarryingValueExcludingFurnitureFixturesAndEquipment	13363113000	USD
CY2010Q4	bxp	Real Estate Gross At Carrying Value Excluding Furniture Fixtures And Equipment RealEstateGrossAtCarryingValueExcludingFurnitureFixturesAndEquipment	12740892000	USD
CY2012	bxp	Real Estate Improvements Excluding Furniture Fixtures And Equipment RealEstateImprovementsExcludingFurnitureFixturesAndEquipment	1602583000	USD
CY2011	bxp	Real Estate Improvements Excluding Furniture Fixtures And Equipment RealEstateImprovementsExcludingFurnitureFixturesAndEquipment	668084000	USD
CY2013	bxp	Real Estate Improvements Excluding Furniture Fixtures And Equipment RealEstateImprovementsExcludingFurnitureFixturesAndEquipment	4410622000	USD
CY2013	bxp	Reit Annual Taxable Income Distribution Requirement Percentage Minimum ReitAnnualTaxableIncomeDistributionRequirementPercentageMinimum	0.90
CY2013	bxp	Rental Expenses Class Office RentalExpensesClassOffice	716049000	USD
CY2012	bxp	Rental Expenses Class Office RentalExpensesClassOffice	617482000	USD
CY2011	bxp	Rental Expenses Class Office RentalExpensesClassOffice	555664000	USD
CY2013	bxp	Rental Expenses Office Technical RentalExpensesOfficeTechnical	14777000	USD
CY2012	bxp	Rental Expenses Office Technical RentalExpensesOfficeTechnical	10614000	USD
CY2011	bxp	Rental Expenses Office Technical RentalExpensesOfficeTechnical	11525000	USD
CY2013	bxp	Rental Expenses Operating Expenses Total RentalExpensesOperatingExpensesTotal	771403000	USD
CY2012	bxp	Rental Expenses Operating Expenses Total RentalExpensesOperatingExpensesTotal	667208000	USD
CY2011	bxp	Rental Expenses Operating Expenses Total RentalExpensesOperatingExpensesTotal	598796000	USD
CY2013	bxp	Rental Expenses Residential RentalExpensesResidential	12130000	USD
CY2012	bxp	Rental Expenses Residential RentalExpensesResidential	10992000	USD
CY2011	bxp	Rental Expenses Residential RentalExpensesResidential	5479000	USD
CY2013	bxp	Rental Revenue Class Office RentalRevenueClassOffice	1987671000	USD
CY2012	bxp	Rental Revenue Class Office RentalRevenueClassOffice	1715425000	USD
CY2011	bxp	Rental Revenue Class Office RentalRevenueClassOffice	1606655000	USD
CY2013	bxp	Rental Revenue Office Technical RentalRevenueOfficeTechnical	55525000	USD
CY2012	bxp	Rental Revenue Office Technical RentalRevenueOfficeTechnical	39218000	USD
CY2011	bxp	Rental Revenue Office Technical RentalRevenueOfficeTechnical	41585000	USD
CY2013	bxp	Rental Revenue Residential RentalRevenueResidential	22318000	USD
CY2012	bxp	Rental Revenue Residential RentalRevenueResidential	20568000	USD
CY2011	bxp	Rental Revenue Residential RentalRevenueResidential	6617000	USD
CY2013	bxp	Rental Revenue Total RentalRevenueTotal	2105844000	USD
CY2012	bxp	Rental Revenue Total RentalRevenueTotal	1813126000	USD
CY2011	bxp	Rental Revenue Total RentalRevenueTotal	1689386000	USD
CY2013	bxp	Restriction On Redemption Of Op Units From Date Of Issuance In Years RestrictionOnRedemptionOfOpUnitsFromDateOfIssuanceInYears	1	Y
CY2013Q4	bxp	Revisedexchangepriceduetospecialdividend Revisedexchangepriceduetospecialdividend	114.98
CY2013Q4	bxp	Revisedexchangerate Revisedexchangerate	8.6974	shares
CY2013	bxp	Salaries And Related Costs Capitalized SalariesAndRelatedCostsCapitalized	7700000	USD
CY2011	bxp	Salaries And Related Costs Capitalized SalariesAndRelatedCostsCapitalized	6500000	USD
CY2012	bxp	Salaries And Related Costs Capitalized SalariesAndRelatedCostsCapitalized	7100000	USD
CY2013	bxp	Schedule Of Statements Of Operations Of Unconsolidated Joint Ventures Text Bock ScheduleOfStatementsOfOperationsOfUnconsolidatedJointVenturesTextBock	<div style="font-family:Times New Roman;font-size:10pt;"><div style="line-height:120%;padding-top:12px;text-indent:32px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">The combined summarized statements of operations of the joint ventures are as follows:</font></div><div style="line-height:120%;font-size:9pt;"><font style="font-family:inherit;font-size:9pt;"> </font></div><div style="line-height:120%;font-size:10pt;"><div style="padding-left:0px;text-indent:0px;line-height:normal;padding-top:10px;"><table cellpadding="0" cellspacing="0" style="font-family:Times New Roman;font-size:10pt;width:100%;border-collapse:collapse;text-align:left;"><tr><td colspan="12" rowspan="1"></td></tr><tr><td width="54%" rowspan="1" colspan="1"></td><td width="1%" rowspan="1" colspan="1"></td><td width="12%" rowspan="1" colspan="1"></td><td width="1%" rowspan="1" colspan="1"></td><td width="1%" rowspan="1" colspan="1"></td><td width="1%" rowspan="1" colspan="1"></td><td width="13%" rowspan="1" colspan="1"></td><td width="1%" rowspan="1" colspan="1"></td><td width="1%" rowspan="1" colspan="1"></td><td width="1%" rowspan="1" colspan="1"></td><td width="13%" rowspan="1" colspan="1"></td><td width="1%" rowspan="1" colspan="1"></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;"> </font></div></td><td colspan="11" style="vertical-align:bottom;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:center;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-weight:bold;">For the year ended December 31,</font></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;"> </font></div></td><td colspan="3" style="vertical-align:bottom;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;border-top:1px solid #000000;" rowspan="1"><div style="text-align:center;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;font-weight:bold;">2013</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;border-top:1px solid #000000;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="3" style="vertical-align:bottom;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;border-top:1px solid #000000;" rowspan="1"><div style="text-align:center;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;font-weight:bold;">2012</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;border-top:1px solid #000000;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="3" style="vertical-align:bottom;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;border-top:1px solid #000000;" rowspan="1"><div style="text-align:center;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;font-weight:bold;">2011</font></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;"> </font></div></td><td colspan="11" style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:center;font-size:8pt;"><font style="font-family:inherit;font-size:8pt;font-weight:bold;">(in thousands)</font></div></td></tr><tr><td style="vertical-align:top;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Total revenue (1)</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;background-color:#cceeff;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">$</font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">311,548</font></div></td><td style="vertical-align:bottom;background-color:#cceeff;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;background-color:#cceeff;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">$</font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">564,205</font></div></td><td style="vertical-align:bottom;background-color:#cceeff;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;background-color:#cceeff;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">$</font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">589,294</font></div></td><td style="vertical-align:bottom;background-color:#cceeff;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td></tr><tr><td style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Expenses</font></div></td><td colspan="3" style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="3" style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="3" style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td></tr><tr><td style="vertical-align:top;background-color:#cceeff;padding-left:28px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Operating</font></div></td><td colspan="2" style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">105,319</font></div></td><td style="vertical-align:bottom;background-color:#cceeff;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="2" style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">162,665</font></div></td><td style="vertical-align:bottom;background-color:#cceeff;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="2" style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">170,404</font></div></td><td style="vertical-align:bottom;background-color:#cceeff;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td></tr><tr><td style="vertical-align:top;padding-left:28px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Depreciation and amortization</font></div></td><td colspan="2" style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">86,088</font></div></td><td style="vertical-align:bottom;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="2" style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">163,134</font></div></td><td style="vertical-align:bottom;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="2" style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">190,437</font></div></td><td style="vertical-align:bottom;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td></tr><tr><td style="vertical-align:top;background-color:#cceeff;padding-left:52px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="text-align:left;padding-left:24px;text-indent:0px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Impairment losses</font></div></td><td colspan="2" style="vertical-align:bottom;border-bottom:1px solid #000000;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">—</font></div></td><td style="vertical-align:bottom;border-bottom:1px solid #000000;background-color:#cceeff;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="2" style="vertical-align:bottom;border-bottom:1px solid #000000;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">—</font></div></td><td style="vertical-align:bottom;border-bottom:1px solid #000000;background-color:#cceeff;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="2" style="vertical-align:bottom;border-bottom:1px solid #000000;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">40,468</font></div></td><td style="vertical-align:bottom;border-bottom:1px solid #000000;background-color:#cceeff;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td></tr><tr><td style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Total expenses</font></div></td><td colspan="2" style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">191,407</font></div></td><td style="vertical-align:bottom;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="2" style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">325,799</font></div></td><td style="vertical-align:bottom;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="2" style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">401,309</font></div></td><td style="vertical-align:bottom;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td></tr><tr><td style="vertical-align:top;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Operating income</font></div></td><td colspan="2" style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">120,141</font></div></td><td style="vertical-align:bottom;background-color:#cceeff;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="2" style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">238,406</font></div></td><td style="vertical-align:bottom;background-color:#cceeff;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="2" style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">187,985</font></div></td><td style="vertical-align:bottom;background-color:#cceeff;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td></tr><tr><td style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Other income (expense)</font></div></td><td colspan="3" style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="3" style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="3" style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td></tr><tr><td style="vertical-align:top;background-color:#cceeff;padding-left:28px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Interest expense</font></div></td><td colspan="2" style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">(112,535</font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-right:2px;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">)</font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="2" style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">(224,645</font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-right:2px;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">)</font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="2" style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">(228,494</font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-right:2px;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">)</font></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">       Losses from early extinguishments of debt</font></div></td><td colspan="2" style="vertical-align:bottom;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">(1,677</font></div></td><td style="vertical-align:bottom;border-bottom:1px solid #000000;padding-right:2px;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">)</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="2" style="vertical-align:bottom;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">—</font></div></td><td style="vertical-align:bottom;border-bottom:1px solid #000000;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="2" style="vertical-align:bottom;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">—</font></div></td><td style="vertical-align:bottom;border-bottom:1px solid #000000;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td></tr><tr><td style="vertical-align:top;background-color:#cceeff;padding-left:52px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="text-align:left;padding-left:48px;text-indent:0px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Income (loss) from continuing operations</font></div></td><td colspan="2" style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">5,929</font></div></td><td style="vertical-align:bottom;background-color:#cceeff;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="2" style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">13,761</font></div></td><td style="vertical-align:bottom;background-color:#cceeff;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="2" style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">(40,509</font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-right:2px;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">)</font></div></td></tr><tr><td style="vertical-align:top;padding-left:52px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="text-align:left;padding-left:24px;text-indent:0px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Gains on sales of real estate</font></div></td><td colspan="2" style="vertical-align:bottom;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">14,207</font></div></td><td style="vertical-align:bottom;border-bottom:1px solid #000000;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="2" style="vertical-align:bottom;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">990</font></div></td><td style="vertical-align:bottom;border-bottom:1px solid #000000;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="2" style="vertical-align:bottom;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">—</font></div></td><td style="vertical-align:bottom;border-bottom:1px solid #000000;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td></tr><tr><td style="vertical-align:top;background-color:#cceeff;padding-left:52px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Net income (loss)</font></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;background-color:#cceeff;border-top:1px solid #000000;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">$</font></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;background-color:#cceeff;padding-top:2px;padding-bottom:2px;border-top:1px solid #000000;" rowspan="1" colspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">20,136</font></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;background-color:#cceeff;border-top:1px solid #000000;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;background-color:#cceeff;border-top:1px solid #000000;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">$</font></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;background-color:#cceeff;padding-top:2px;padding-bottom:2px;border-top:1px solid #000000;" rowspan="1" colspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">14,751</font></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;background-color:#cceeff;border-top:1px solid #000000;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;background-color:#cceeff;border-top:1px solid #000000;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">$</font></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;background-color:#cceeff;padding-top:2px;padding-bottom:2px;border-top:1px solid #000000;" rowspan="1" colspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">(40,509</font></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;background-color:#cceeff;padding-right:2px;padding-top:2px;padding-bottom:2px;border-top:1px solid #000000;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">)</font></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;height:16px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="3" style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;border-top:3px double #000000;" rowspan="1"><div style="overflow:hidden;height:16px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;height:16px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="3" style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;border-top:3px double #000000;" rowspan="1"><div style="overflow:hidden;height:16px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;height:16px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="3" style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;border-top:3px double #000000;" rowspan="1"><div style="overflow:hidden;height:16px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td></tr><tr><td style="vertical-align:top;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Company’s share of net income (loss)</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;background-color:#cceeff;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">$</font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">4,612</font></div></td><td style="vertical-align:bottom;background-color:#cceeff;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;background-color:#cceeff;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">$</font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">6,863</font></div></td><td style="vertical-align:bottom;background-color:#cceeff;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;background-color:#cceeff;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">$</font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">(25,374</font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-right:2px;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">)</font></div></td></tr><tr><td style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Gains on sales of real estate</font></div></td><td colspan="2" style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">54,501</font></div></td><td style="vertical-align:bottom;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="2" style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">—</font></div></td><td style="vertical-align:bottom;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="2" style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">46,166</font></div></td><td style="vertical-align:bottom;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td></tr><tr><td style="vertical-align:top;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Basis differential</font></div></td><td colspan="2" style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">(1,017</font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-right:2px;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">)</font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="2" style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">1,732</font></div></td><td style="vertical-align:bottom;background-color:#cceeff;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="2" style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">27,226</font></div></td><td style="vertical-align:bottom;background-color:#cceeff;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td></tr><tr><td style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Elimination of inter-entity interest on partner loan</font></div></td><td colspan="2" style="vertical-align:bottom;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">16,978</font></div></td><td style="vertical-align:bottom;border-bottom:1px solid #000000;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="2" style="vertical-align:bottom;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">40,483</font></div></td><td style="vertical-align:bottom;border-bottom:1px solid #000000;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="2" style="vertical-align:bottom;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">37,878</font></div></td><td style="vertical-align:bottom;border-bottom:1px solid #000000;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td></tr><tr><td style="vertical-align:top;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Income from unconsolidated joint ventures</font></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;background-color:#cceeff;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">$</font></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;background-color:#cceeff;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">75,074</font></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;background-color:#cceeff;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;background-color:#cceeff;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">$</font></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;background-color:#cceeff;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">49,078</font></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;background-color:#cceeff;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;background-color:#cceeff;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">$</font></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;background-color:#cceeff;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">85,896</font></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;background-color:#cceeff;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td></tr><tr><td style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Gains on consolidation of joint ventures</font></div></td><td style="vertical-align:bottom;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">$</font></div></td><td style="vertical-align:bottom;border-bottom:1px solid #000000;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">385,991</font></div></td><td style="vertical-align:bottom;border-bottom:1px solid #000000;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td style="vertical-align:bottom;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">$</font></div></td><td style="vertical-align:bottom;border-bottom:1px solid #000000;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">—</font></div></td><td style="vertical-align:bottom;border-bottom:1px solid #000000;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td style="vertical-align:bottom;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">$</font></div></td><td style="vertical-align:bottom;border-bottom:1px solid #000000;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">—</font></div></td><td style="vertical-align:bottom;border-bottom:1px solid #000000;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td></tr></table></div></div><div style="line-height:120%;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> _______________ </font></div><table cellpadding="0" cellspacing="0" style="font-family:Times New Roman; font-size:10pt;"><tr><td style="width:48px;" rowspan="1" colspan="1"></td><td rowspan="1" colspan="1"></td></tr><tr><td style="vertical-align:top" rowspan="1" colspan="1"><div style="line-height:120%;font-size:10pt;padding-left:24px;"><font style="font-family:inherit;font-size:10pt;">(1)</font></div></td><td style="vertical-align:top;" rowspan="1" colspan="1"><div style="line-height:120%;text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Includes straight-line rent adjustments of </font><font style="font-family:inherit;font-size:10pt;color:#000000;text-decoration:none;">$7.8 million</font><font style="font-family:inherit;font-size:10pt;">, </font><font style="font-family:inherit;font-size:10pt;color:#000000;text-decoration:none;">$12.0 million</font><font style="font-family:inherit;font-size:10pt;"> and </font><font style="font-family:inherit;font-size:10pt;color:#000000;text-decoration:none;">$21.9 million</font><font style="font-family:inherit;font-size:10pt;"> for the years ended </font><font style="font-family:inherit;font-size:10pt;color:#000000;text-decoration:none;">December 31, 2013</font><font style="font-family:inherit;font-size:10pt;">, </font><font style="font-family:inherit;font-size:10pt;color:#000000;text-decoration:none;">2012</font><font style="font-family:inherit;font-size:10pt;"> and </font><font style="font-family:inherit;font-size:10pt;color:#000000;text-decoration:none;">2011</font><font style="font-family:inherit;font-size:10pt;">, respectively. Includes net below-market rent adjustments of </font><font style="font-family:inherit;font-size:10pt;color:#000000;text-decoration:none;">$33.7 million</font><font style="font-family:inherit;font-size:10pt;">, </font><font style="font-family:inherit;font-size:10pt;color:#000000;text-decoration:none;">$91.1 million</font><font style="font-family:inherit;font-size:10pt;"> and </font><font style="font-family:inherit;font-size:10pt;color:#000000;text-decoration:none;">$120.3 million</font><font style="font-family:inherit;font-size:10pt;"> for the years ended </font><font style="font-family:inherit;font-size:10pt;color:#000000;text-decoration:none;">December 31, 2013</font><font style="font-family:inherit;font-size:10pt;">, </font><font style="font-family:inherit;font-size:10pt;color:#000000;text-decoration:none;">2012</font><font style="font-family:inherit;font-size:10pt;"> and </font><font style="font-family:inherit;font-size:10pt;color:#000000;text-decoration:none;">2011</font><font style="font-family:inherit;font-size:10pt;">, respectively. Total revenue for the year ended </font><font style="font-family:inherit;font-size:10pt;">December 31, 2012</font><font style="font-family:inherit;font-size:10pt;"> includes termination income totaling approximately </font><font style="font-family:inherit;font-size:10pt;color:#000000;text-decoration:none;">$19.6 million</font><font style="font-family:inherit;font-size:10pt;"> (of which the Company's share is approximately </font><font style="font-family:inherit;font-size:10pt;color:#000000;text-decoration:none;">$11.8 million</font><font style="font-family:inherit;font-size:10pt;">) related to a lease termination with a tenant at 767 Fifth Avenue (The General Motors Building).</font></div></td></tr></table></div>
CY2012Q4	bxp	Separate Unrestricted Cash For Deferred Compensation Plan SeparateUnrestrictedCashForDeferredCompensationPlan	12200000	USD
CY2013Q4	bxp	Separate Unrestricted Cash For Deferred Compensation Plan SeparateUnrestrictedCashForDeferredCompensationPlan	16600000	USD
CY2013	bxp	Settlement Of Accreted Debt Discount On Repurchases Of Unsecured Exchangeable Senior Notes SettlementOfAccretedDebtDiscountOnRepurchasesOfUnsecuredExchangeableSeniorNotes	-56532000	USD
CY2012	bxp	Settlement Of Accreted Debt Discount On Repurchases Of Unsecured Exchangeable Senior Notes SettlementOfAccretedDebtDiscountOnRepurchasesOfUnsecuredExchangeableSeniorNotes	-69499000	USD
CY2011	bxp	Settlement Of Accreted Debt Discount On Repurchases Of Unsecured Exchangeable Senior Notes SettlementOfAccretedDebtDiscountOnRepurchasesOfUnsecuredExchangeableSeniorNotes	-5601000	USD
CY2013	bxp	Share Based Compensation Arrangement By Share Based Payment Award Options Special Dividend Adjustment ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsSpecialDividendAdjustment	12076	shares
CY2013	bxp	Share Based Compensation Arrangement By Share Based Payment Award Options Weighted Average Share Price Special Dividend Adjustment ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsWeightedAverageSharePriceSpecialDividendAdjustment	100.44
CY2013Q4	bxp	Specialdividendpershareamount Specialdividendpershareamount	2.25
CY2013Q4	bxp	Square Feet For Parking SquareFeetForParking	15400000	sqft
CY2012	bxp	Stock Based Compensation And Exchangeable Senior Notes Shares StockBasedCompensationAndExchangeableSeniorNotesShares	591000	shares
CY2011	bxp	Stock Based Compensation And Exchangeable Senior Notes Shares StockBasedCompensationAndExchangeableSeniorNotesShares	525000	shares
CY2013	bxp	Stock Based Compensation And Exchangeable Senior Notes Shares StockBasedCompensationAndExchangeableSeniorNotesShares	320000	shares
CY2012	bxp	Straight Line Rent Adjustments For Tax Purposes StraightLineRentAdjustmentsForTaxPurposes	-80281000	USD
CY2013	bxp	Straight Line Rent Adjustments For Tax Purposes StraightLineRentAdjustmentsForTaxPurposes	-74445000	USD
CY2011	bxp	Straight Line Rent Adjustments For Tax Purposes StraightLineRentAdjustmentsForTaxPurposes	-77422000	USD
CY2012	bxp	Taxable Income TaxableIncome	347681000	USD
CY2011	bxp	Taxable Income TaxableIncome	304705000	USD
CY2013	bxp	Taxable Income TaxableIncome	750672000	USD
CY2012Q4	bxp	Temporary Equity Carrying Amount Redeemable Interest In Property Partnerships TemporaryEquityCarryingAmountRedeemableInterestInPropertyPartnerships	97558000	USD
CY2013Q4	bxp	Temporary Equity Carrying Amount Redeemable Interest In Property Partnerships TemporaryEquityCarryingAmountRedeemableInterestInPropertyPartnerships	99609000	USD
CY2011Q4	bxp	Temporary Equity Carrying Amount Redeemable Interest In Property Partnerships TemporaryEquityCarryingAmountRedeemableInterestInPropertyPartnerships	0	USD
CY2011	bxp	Tenant Leasing Costs TenantLeasingCosts	-53212000	USD
CY2012	bxp	Tenant Leasing Costs TenantLeasingCosts	-76821000	USD
CY2013	bxp	Tenant Leasing Costs TenantLeasingCosts	-56428000	USD
CY2011	bxp	Totaldebtrecordeduponconsolidation Totaldebtrecordeduponconsolidation	0	USD
CY2013	bxp	Totaldebtrecordeduponconsolidation Totaldebtrecordeduponconsolidation	2056000000	USD
CY2012	bxp	Totaldebtrecordeduponconsolidation Totaldebtrecordeduponconsolidation	0	USD
CY2013	bxp	Transaction Costs Expensed TransactionCostsExpensed	1744000	USD
CY2012	bxp	Transaction Costs Expensed TransactionCostsExpensed	3653000	USD
CY2011	bxp	Transaction Costs Expensed TransactionCostsExpensed	1987000	USD
CY2013Q4	bxp	Unsecured Debt Interest Coverage Ratio Minimum. UnsecuredDebtInterestCoverageRatioMinimum.	1.75
CY2013Q4	bxp	Unsecured Debt Leverage Ratio Maximum Increasing Limit UnsecuredDebtLeverageRatioMaximumIncreasingLimit	0.65
CY2013Q4	bxp	Unsecured Debt Leverage Ratio Reduction Limit UnsecuredDebtLeverageRatioReductionLimit	0.60
CY2013Q4	bxp	Unsecured Debt Leverage Ratio Reduction Period Years UnsecuredDebtLeverageRatioReductionPeriodYears	1	Y
CY2013Q4	bxp	Unsecured Exchangeable Senior Notes Discount UnsecuredExchangeableSeniorNotesDiscount	182000	USD
CY2012Q4	bxp	Unsecured Exchangeable Senior Notes Discount UnsecuredExchangeableSeniorNotesDiscount	1653000	USD
CY2013Q4	bxp	Vehicles In Structured Parking VehiclesInStructuredParking	45234	Vehicles
CY2013	bxp	Workingcapitalrecordeduponconsolidation Workingcapitalrecordeduponconsolidation	177315000	USD
CY2011	bxp	Workingcapitalrecordeduponconsolidation Workingcapitalrecordeduponconsolidation	0	USD
CY2012	bxp	Workingcapitalrecordeduponconsolidation Workingcapitalrecordeduponconsolidation	0	USD
	bxp	Years Of Service For Supplemental Retirement Contribution YearsOfServiceForSupplementalRetirementContribution	10	Y
CY2013	dei	Amendment Flag AmendmentFlag	false
CY2013	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2013	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2013	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2013
CY2013	dei	Document Period End Date DocumentPeriodEndDate	2013-12-31
CY2013	dei	Document Type DocumentType	8-K
CY2013	dei	Entity Central Index Key EntityCentralIndexKey	0001037540
CY2014Q1	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	153006302	shares
CY2013	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2013	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
CY2013Q2	dei	Entity Public Float EntityPublicFloat	15937365185	USD
CY2013	dei	Entity Registrant Name EntityRegistrantName	BOSTON PROPERTIES INC
CY2013	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2013	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	Yes

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$BXP
BXP Inc Stock $bxp

2013 Q4 Form 8-K Financial Statement

#000119312514224052 Filed on June 03, 2014

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$BXP BXP Inc Stock $bxp

2013 Q4 Form 8-K Financial Statement

#000119312514224052 Filed on June 03, 2014

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$BXP
BXP Inc Stock $bxp