$BXP
BXP Inc Stock $bxp

$bxp Overview Financials Valuation SEC Filings Company Website

2023 Q1 Form 10-K Financial Statement

#000165642323000013 Filed on February 27, 2023

Income Statement

Concept	2023 Q1	2022 Q4	2022
Revenue	$803.2M	$789.8M	$3.109B
YoY Change	6.48%	8.04%	7.61%
Cost Of Revenue	$303.2M	$294.2M	$1.151B
YoY Change	8.62%	10.96%	9.97%
Gross Profit	$491.0M	$495.7M	$1.930B
YoY Change	4.62%	6.38%	6.35%
Gross Profit Margin	61.13%	62.76%	62.07%
Selling, General & Admin	$55.80M	$36.00M	$146.4M
YoY Change	29.19%	6.99%	-3.43%
% of Gross Profit	11.36%	7.26%	7.59%
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$208.7M	$198.3M	$749.8M
YoY Change	17.51%	11.72%	4.52%
% of Gross Profit	42.51%	40.01%	38.86%
Operating Expenses	$264.5M	$234.3M	$896.2M
YoY Change	19.8%	10.97%	3.14%
Operating Profit	$226.5M	$261.3M	$1.033B
YoY Change	-8.86%	2.57%	9.31%
Interest Expense	$134.2M	-$170.6M	$437.1M
YoY Change	32.58%	69.44%	3.26%
% of Operating Profit	59.26%	-65.29%	42.3%
Other Income/Expense, Net	$0.00	$0.00	$6.624M
YoY Change
Pretax Income	$105.6M	$155.7M	$1.021B
YoY Change	-40.31%	-30.26%	61.5%
Income Tax
% Of Pretax Income
Net Earnings	$77.89M	$121.9M	$848.9M
YoY Change	-45.55%	-33.94%	68.04%
Net Earnings / Revenue	9.7%	15.44%	27.31%
Basic Earnings Per Share	$0.50		$5.42
Diluted Earnings Per Share	$0.50	$0.78	$5.40
COMMON SHARES
Basic Shares Outstanding	156.8M shares	156.8M shares	156.7M shares
Diluted Shares Outstanding	157.0M shares		157.1M shares

Balance Sheet

Concept	2023 Q1	2022 Q4	2022
SHORT-TERM ASSETS
Cash & Short-Term Investments	$951.1M	$722.6M	$690.3M
YoY Change	101.36%	45.59%	52.5%
Cash & Equivalents	$919.0M	$690.3M	$690.3M
Short-Term Investments	$32.10M	$32.28M
Other Short-Term Assets	$141.9M	$43.59M	$43.59M
YoY Change	10.48%	-24.6%	-24.6%
Inventory
Prepaid Expenses
Receivables	$98.63M	$94.20M	$94.20M
Other Receivables	$1.298B	$1.277B	$1.277B
Total Short-Term Assets	$2.457B	$2.105B	$2.105B
YoY Change	31.81%	16.45%	16.45%
LONG-TERM ASSETS
Property, Plant & Equipment	$19.54B	$19.50B	$19.50B
YoY Change	6.7%	6.68%	6.68%
Goodwill
YoY Change
Intangibles
YoY Change
Long-Term Investments	$1.785B	$1.748B	$1.748B
YoY Change	14.8%	14.51%	14.51%
Other Assets	$765.5M	$779.8M	$779.8M
YoY Change	16.82%	16.86%	16.86%
Total Long-Term Assets	$22.17B	$22.10B	$22.10B
YoY Change	7.55%	7.52%	7.52%
TOTAL ASSETS
Total Short-Term Assets	$2.457B	$2.105B	$2.105B
Total Long-Term Assets	$22.17B	$22.10B	$22.10B
Total Assets	$24.63B	$24.21B	$24.21B
YoY Change	9.56%	8.24%	8.24%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$397.8M	$417.5M	$417.5M
YoY Change	30.61%	30.17%	30.17%
Accrued Expenses	$318.8M	$308.5M	$308.5M
YoY Change	7.88%	3.04%	3.04%
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	$888.1M	$896.6M	$896.6M
YoY Change	15.19%	13.5%	13.5%
LONG-TERM LIABILITIES
Long-Term Debt	$14.96B	$14.49B	$14.49B
YoY Change	12.86%	10.26%	10.26%
Other Long-Term Liabilities	$470.9M	$457.5M	$457.5M
YoY Change	15.6%	14.09%	14.09%
Total Long-Term Liabilities	$15.43B	$14.95B	$14.95B
YoY Change	12.94%	10.38%	10.38%
TOTAL LIABILITIES
Total Short-Term Liabilities	$888.1M	$896.6M	$896.6M
Total Long-Term Liabilities	$15.43B	$14.95B	$14.95B
Total Liabilities	$16.31B	$15.84B	$18.07B
YoY Change	13.11%	10.58%	9.34%
SHAREHOLDERS EQUITY
Retained Earnings	-$467.2M	-$391.4M
YoY Change	-26.6%	-37.47%
Common Stock	$1.568M	$1.568M
YoY Change	0.06%	0.19%
Preferred Stock
YoY Change
Treasury Stock (at cost)	$2.722M	$2.722M
YoY Change	0.0%	0.0%
Treasury Stock Shares	78.90K shares	78.90K shares
Shareholders Equity	$6.063B	$6.133B	$6.133B
YoY Change
Total Liabilities & Shareholders Equity	$24.63B	$24.21B	$24.21B
YoY Change	9.56%	8.24%	8.24%

Cashflow Statement

Concept	2023 Q1	2022 Q4	2022
OPERATING ACTIVITIES
Net Income	$77.89M	$121.9M	$848.9M
YoY Change	-45.55%	-33.94%	68.04%
Depreciation, Depletion And Amortization	$208.7M	$198.3M	$749.8M
YoY Change	17.51%	11.72%	4.52%
Cash From Operating Activities	$234.0M	$370.0M	$1.282B
YoY Change	6.62%	6.82%	13.16%
INVESTING ACTIVITIES
Capital Expenditures	$226.0M	$259.1M	$2.216B
YoY Change	-221.57%	-213.37%	-292.53%
Acquisitions	$0.00		$0.00
YoY Change
Other Investing Activities	-$59.64M	-$30.44M	$613.4M
YoY Change	-272.67%	-116.28%	451.99%
Cash From Investing Activities	-$285.6M	-$289.6M	-$1.603B
YoY Change	88.72%	596.31%	54.12%
FINANCING ACTIVITIES
Cash Dividend Paid	$171.3M		$685.0M
YoY Change	0.46%		0.19%
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	$279.1M	207.5M	$556.1M
YoY Change	-420.86%	-123.43%	-142.4%
NET CHANGE
Cash From Operating Activities	$234.0M	370.0M	$1.282B
Cash From Investing Activities	-$285.6M	-289.6M	-$1.603B
Cash From Financing Activities	$279.1M	207.5M	$556.1M
Net Change In Cash	$227.5M	287.9M	$235.7M
YoY Change	-1308.98%	-149.58%	-119.34%
FREE CASH FLOW
Cash From Operating Activities	$234.0M	$370.0M	$1.282B
Capital Expenditures	$226.0M	$259.1M	$2.216B
Free Cash Flow	$8.053M	$110.9M	-$933.8M
YoY Change	-98.01%	-80.72%	-140.88%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2022	dei	Entity Central Index Key EntityCentralIndexKey	0001037540
CY2022	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2022	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2022
CY2022	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2022	dei	Amendment Flag AmendmentFlag	false
CY2022	dei	Entity Listing Par Value Per Share EntityListingParValuePerShare	0.01
CY2023Q1	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	156822702	shares
CY2022	bxp	Above And Below Market Rent Adjustments AboveAndBelowMarketRentAdjustments	9100000	usd
CY2022	bxp	Reit Distribution Requirement REITDistributionRequirement	0.90
CY2022	bxp	Companys Taxable Income Distribution CompanysTaxableIncomeDistribution	1
CY2022Q4	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	111882000	usd
CY2021Q4	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	184537000	usd
CY2022	us-gaap	Interest Costs Capitalized InterestCostsCapitalized	52130000	usd
CY2022	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Award Vesting Period1 ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1	P4Y0M0D
CY2022	dei	Document Type DocumentType	10-K
CY2022	dei	Document Annual Report DocumentAnnualReport	true
CY2022	dei	Document Period End Date DocumentPeriodEndDate	2022-12-31
CY2022	dei	Document Transition Report DocumentTransitionReport	false
CY2022	dei	Entity File Number EntityFileNumber	1-13087
CY2022	dei	Entity Registrant Name EntityRegistrantName	BOSTON PROPERTIES, INC.
CY2022	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	DE
CY2022	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	04-2473675
CY2022	dei	Entity Address Address Line1 EntityAddressAddressLine1	Prudential Center, 800 Boylston Street, Suite 1900
CY2022	dei	Entity Address City Or Town EntityAddressCityOrTown	Boston
CY2022	dei	Entity Address State Or Province EntityAddressStateOrProvince	MA
CY2022	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	02199-8103
CY2022	dei	City Area Code CityAreaCode	617
CY2022	dei	Local Phone Number LocalPhoneNumber	236-3300
CY2022	dei	Security12b Title Security12bTitle	Common Stock, par value $.01 per share
CY2022	dei	Trading Symbol TradingSymbol	BXP
CY2022	dei	Security Exchange Name SecurityExchangeName	NYSE
CY2022	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	Yes
CY2022	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2022	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2022	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
CY2022	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
CY2022	dei	Entity Small Business EntitySmallBusiness	false
CY2022	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
CY2022	dei	Icfr Auditor Attestation Flag IcfrAuditorAttestationFlag	true
CY2022	dei	Entity Shell Company EntityShellCompany	false
CY2022Q2	dei	Entity Public Float EntityPublicFloat	13917004905	usd
CY2023Q1	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	156822702	shares
CY2022	dei	Auditor Firm AuditorFirmId	238
CY2022	dei	Auditor Name AuditorName	PricewaterhouseCoopers LLP
CY2022	dei	Auditor Location AuditorLocation	Boston, Massachusetts
CY2022Q4	us-gaap	Real Estate Investment Property At Cost RealEstateInvestmentPropertyAtCost	25389663000	usd
CY2021Q4	us-gaap	Real Estate Investment Property At Cost RealEstateInvestmentPropertyAtCost	23752630000	usd
CY2022Q4	us-gaap	Finance Lease Right Of Use Asset FinanceLeaseRightOfUseAsset	237510000	usd
CY2021Q4	us-gaap	Finance Lease Right Of Use Asset FinanceLeaseRightOfUseAsset	237507000	usd
CY2022Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	167351000	usd
CY2021Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	169778000	usd
CY2022Q4	us-gaap	Real Estate Investment Property Accumulated Depreciation RealEstateInvestmentPropertyAccumulatedDepreciation	6298082000	usd
CY2021Q4	us-gaap	Real Estate Investment Property Accumulated Depreciation RealEstateInvestmentPropertyAccumulatedDepreciation	5883961000	usd
CY2022Q4	us-gaap	Real Estate Investment Property Net RealEstateInvestmentPropertyNet	19496442000	usd
CY2021Q4	us-gaap	Real Estate Investment Property Net RealEstateInvestmentPropertyNet	18275954000	usd
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CY2021Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	452692000	usd
CY2022Q4	us-gaap	Restricted Cash And Cash Equivalents At Carrying Value RestrictedCashAndCashEquivalentsAtCarryingValue	46479000	usd
CY2021Q4	us-gaap	Restricted Cash And Cash Equivalents At Carrying Value RestrictedCashAndCashEquivalentsAtCarryingValue	48466000	usd
CY2022Q4	us-gaap	Marketable Securities MarketableSecurities	32277000	usd
CY2021Q4	us-gaap	Marketable Securities MarketableSecurities	43632000	usd
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CY2021Q4	us-gaap	Accounts Receivable Net AccountsReceivableNet	70186000	usd
CY2022Q4	us-gaap	Notes Receivable Related Parties NotesReceivableRelatedParties	78576000	usd
CY2021Q4	us-gaap	Notes Receivable Related Parties NotesReceivableRelatedParties	78336000	usd
CY2022Q4	us-gaap	Notes Receivable Gross NotesReceivableGross	0	usd
CY2021Q4	us-gaap	Notes Receivable Gross NotesReceivableGross	9641000	usd
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CY2021Q4	us-gaap	Sales Type Lease Net Investment In Lease After Allowance For Credit Loss Current SalesTypeLeaseNetInvestmentInLeaseAfterAllowanceForCreditLossCurrent	0	usd
CY2022Q4	us-gaap	Deferred Rent Receivables Net DeferredRentReceivablesNet	1276580000	usd
CY2021Q4	us-gaap	Deferred Rent Receivables Net DeferredRentReceivablesNet	1226745000	usd
CY2022Q4	us-gaap	Deferred Costs DeferredCosts	733282000	usd
CY2021Q4	us-gaap	Deferred Costs DeferredCosts	618798000	usd
CY2022Q4	us-gaap	Prepaid Expense And Other Assets PrepaidExpenseAndOtherAssets	43589000	usd
CY2021Q4	us-gaap	Prepaid Expense And Other Assets PrepaidExpenseAndOtherAssets	57811000	usd
CY2022Q4	us-gaap	Investments In Affiliates Subsidiaries Associates And Joint Ventures InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures	1715911000	usd
CY2021Q4	us-gaap	Investments In Affiliates Subsidiaries Associates And Joint Ventures InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures	1482997000	usd
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CY2021Q4	us-gaap	Assets Assets	22365258000	usd
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CY2022Q4	us-gaap	Senior Notes SeniorNotes	10237968000	usd
CY2021Q4	us-gaap	Senior Notes SeniorNotes	9483695000	usd
CY2022Q4	us-gaap	Line Of Credit LineOfCredit	0	usd
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CY2021Q4	us-gaap	Other Borrowings OtherBorrowings	0	usd
CY2022Q4	us-gaap	Finance Lease Liability FinanceLeaseLiability	249335000	usd
CY2021Q4	us-gaap	Finance Lease Liability FinanceLeaseLiability	244421000	usd
CY2022Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	204686000	usd
CY2021Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	204561000	usd
CY2022Q4	us-gaap	Accounts Payable And Accrued Liabilities Current And Noncurrent AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent	417545000	usd
CY2021Q4	us-gaap	Accounts Payable And Accrued Liabilities Current And Noncurrent AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent	320775000	usd
CY2022Q4	us-gaap	Dividends Payable Current And Noncurrent DividendsPayableCurrentAndNoncurrent	170643000	usd
CY2021Q4	us-gaap	Dividends Payable Current And Noncurrent DividendsPayableCurrentAndNoncurrent	169859000	usd
CY2022Q4	us-gaap	Interest Payable Current And Noncurrent InterestPayableCurrentAndNoncurrent	103774000	usd
CY2021Q4	us-gaap	Interest Payable Current And Noncurrent InterestPayableCurrentAndNoncurrent	94796000	usd
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CY2021Q4	us-gaap	Other Liabilities OtherLiabilities	391441000	usd
CY2022Q4	us-gaap	Liabilities Liabilities	15837237000	usd
CY2021Q4	us-gaap	Liabilities Liabilities	14322462000	usd
CY2022Q4	us-gaap	Temporary Equity Shares Subscribed But Unissued TemporaryEquitySharesSubscribedButUnissued	97853	shares
CY2021Q4	us-gaap	Temporary Equity Shares Subscribed But Unissued TemporaryEquitySharesSubscribedButUnissued	83073	shares
CY2022Q4	us-gaap	Redeemable Noncontrolling Interest Equity Carrying Amount RedeemableNoncontrollingInterestEquityCarryingAmount	6613000	usd
CY2021Q4	us-gaap	Redeemable Noncontrolling Interest Equity Carrying Amount RedeemableNoncontrollingInterestEquityCarryingAmount	9568000	usd
CY2021Q4	bxp	Excess Stock Par Or Stated Value Per Share ExcessStockParOrStatedValuePerShare	0.01
CY2022Q4	bxp	Excess Stock Par Or Stated Value Per Share ExcessStockParOrStatedValuePerShare	0.01
CY2021Q4	us-gaap	Excess Stock Shares Authorized ExcessStockSharesAuthorized	150000000	shares
CY2022Q4	us-gaap	Excess Stock Shares Authorized ExcessStockSharesAuthorized	150000000	shares
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CY2021Q4	us-gaap	Excess Stock Shares Outstanding ExcessStockSharesOutstanding	0	shares
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CY2021Q4	us-gaap	Excess Stock Shares Issued ExcessStockSharesIssued	0	shares
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CY2022Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.01
CY2022Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	50000000	shares
CY2021Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	50000000	shares
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CY2022Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	250000000	shares
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CY2021Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	156544849	shares
CY2022Q4	us-gaap	Common Stock Value CommonStockValue	1568000	usd
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CY2021Q4	us-gaap	Treasury Stock Shares TreasuryStockShares	78900	shares
CY2022Q4	us-gaap	Treasury Stock Shares TreasuryStockShares	78900	shares
CY2022Q4	us-gaap	Treasury Stock Value TreasuryStockValue	2722000	usd
CY2021Q4	us-gaap	Treasury Stock Value TreasuryStockValue	2722000	usd
CY2022Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-13718000	usd
CY2021Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-36662000	usd
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CY2022Q4	us-gaap	Minority Interest In Operating Partnerships MinorityInterestInOperatingPartnerships	683583000	usd
CY2021Q4	us-gaap	Minority Interest In Operating Partnerships MinorityInterestInOperatingPartnerships	642655000	usd
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CY2021Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	22365258000	usd
CY2022	us-gaap	Operating Lease Lease Income OperatingLeaseLeaseIncome	2918368000	usd
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CY2022	us-gaap	Direct Costs Of Leased And Rented Property Or Equipment DirectCostsOfLeasedAndRentedPropertyOrEquipment	1108070000	usd
CY2021	us-gaap	Direct Costs Of Leased And Rented Property Or Equipment DirectCostsOfLeasedAndRentedPropertyOrEquipment	1021151000	usd
CY2020	us-gaap	Direct Costs Of Leased And Rented Property Or Equipment DirectCostsOfLeasedAndRentedPropertyOrEquipment	1017208000	usd
CY2022	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	146378000	usd
CY2021	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	151573000	usd
CY2020	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	133112000	usd
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CY2021	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	5036000	usd
CY2020	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	1531000	usd
CY2022	us-gaap	Depreciation And Amortization DepreciationAndAmortization	749775000	usd
CY2021	us-gaap	Depreciation And Amortization DepreciationAndAmortization	717336000	usd
CY2020	us-gaap	Depreciation And Amortization DepreciationAndAmortization	683751000	usd
CY2022	us-gaap	Costs And Expenses CostsAndExpenses	2050056000	usd
CY2021	us-gaap	Costs And Expenses CostsAndExpenses	1920581000	usd
CY2020	us-gaap	Costs And Expenses CostsAndExpenses	1860364000	usd
CY2022	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	-59840000	usd
CY2021	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	-2570000	usd
CY2020	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	-85110000	usd
CY2022	us-gaap	Gain Loss On Disposition Of Assets GainLossOnDispositionOfAssets	437019000	usd
CY2021	us-gaap	Gain Loss On Disposition Of Assets GainLossOnDispositionOfAssets	123660000	usd
CY2020	us-gaap	Gain Loss On Disposition Of Assets GainLossOnDispositionOfAssets	618982000	usd
CY2021	us-gaap	Sales Type And Direct Financing Leases Profit Loss SalesTypeAndDirectFinancingLeasesProfitLoss	0	usd
CY2020	us-gaap	Sales Type And Direct Financing Leases Profit Loss SalesTypeAndDirectFinancingLeasesProfitLoss	0	usd
CY2022	us-gaap	Interest And Other Income InterestAndOtherIncome	11940000	usd
CY2021	us-gaap	Interest And Other Income InterestAndOtherIncome	5704000	usd
CY2020	us-gaap	Interest And Other Income InterestAndOtherIncome	5953000	usd
CY2022	us-gaap	Other Income OtherIncome	6624000	usd
CY2021	us-gaap	Other Income OtherIncome	0	usd
CY2020	us-gaap	Other Income OtherIncome	0	usd
CY2022	us-gaap	Gain Loss On Investments GainLossOnInvestments	-6453000	usd
CY2021	us-gaap	Gain Loss On Investments GainLossOnInvestments	5626000	usd
CY2020	us-gaap	Gain Loss On Investments GainLossOnInvestments	5261000	usd
CY2022	us-gaap	Unrealized Gain Loss On Investments UnrealizedGainLossOnInvestments	-150000	usd
CY2021	us-gaap	Unrealized Gain Loss On Investments UnrealizedGainLossOnInvestments	0	usd
CY2020	us-gaap	Unrealized Gain Loss On Investments UnrealizedGainLossOnInvestments	0	usd
CY2022	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	0	usd
CY2021	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-45182000	usd
CY2020	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	0	usd
CY2022	us-gaap	Interest Expense InterestExpense	437139000	usd
CY2021	us-gaap	Interest Expense InterestExpense	423346000	usd
CY2020	us-gaap	Interest Expense InterestExpense	431717000	usd
CY2022	us-gaap	Profit Loss ProfitLoss	1020584000	usd
CY2021	us-gaap	Profit Loss ProfitLoss	631932000	usd
CY2020	us-gaap	Profit Loss ProfitLoss	1018691000	usd
CY2022	us-gaap	Noncontrolling Interest In Net Income Loss Limited Partnerships Nonredeemable NoncontrollingInterestInNetIncomeLossLimitedPartnershipsNonredeemable	74857000	usd
CY2021	us-gaap	Noncontrolling Interest In Net Income Loss Limited Partnerships Nonredeemable NoncontrollingInterestInNetIncomeLossLimitedPartnershipsNonredeemable	70806000	usd
CY2020	us-gaap	Noncontrolling Interest In Net Income Loss Limited Partnerships Nonredeemable NoncontrollingInterestInNetIncomeLossLimitedPartnershipsNonredeemable	48260000	usd
CY2022	us-gaap	Noncontrolling Interest In Net Income Loss Operating Partnerships Redeemable NoncontrollingInterestInNetIncomeLossOperatingPartnershipsRedeemable	96780000	usd
CY2021	us-gaap	Noncontrolling Interest In Net Income Loss Operating Partnerships Redeemable NoncontrollingInterestInNetIncomeLossOperatingPartnershipsRedeemable	55931000	usd
CY2020	us-gaap	Noncontrolling Interest In Net Income Loss Operating Partnerships Redeemable NoncontrollingInterestInNetIncomeLossOperatingPartnershipsRedeemable	97704000	usd
CY2022	us-gaap	Net Income Loss NetIncomeLoss	848947000	usd
CY2021	us-gaap	Net Income Loss NetIncomeLoss	505195000	usd
CY2020	us-gaap	Net Income Loss NetIncomeLoss	872727000	usd
CY2022	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	0	usd
CY2021	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	2560000	usd
CY2020	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	10500000	usd
CY2022	us-gaap	Preferred Stock Redemption Premium PreferredStockRedemptionPremium	0	usd
CY2021	us-gaap	Preferred Stock Redemption Premium PreferredStockRedemptionPremium	6412000	usd
CY2020	us-gaap	Preferred Stock Redemption Premium PreferredStockRedemptionPremium	0	usd
CY2022	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	848947000	usd
CY2021	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	496223000	usd
CY2020	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	862227000	usd
CY2022	bxp	Earnings Per Share After Allocation Of Undistributed Earnings To Participating Securities Basic Dollars Per Share EarningsPerShareAfterAllocationOfUndistributedEarningsToParticipatingSecuritiesBasicDollarsPerShare	5.41
CY2021	bxp	Earnings Per Share After Allocation Of Undistributed Earnings To Participating Securities Basic Dollars Per Share EarningsPerShareAfterAllocationOfUndistributedEarningsToParticipatingSecuritiesBasicDollarsPerShare	3.18
CY2020	bxp	Earnings Per Share After Allocation Of Undistributed Earnings To Participating Securities Basic Dollars Per Share EarningsPerShareAfterAllocationOfUndistributedEarningsToParticipatingSecuritiesBasicDollarsPerShare	5.54
CY2022	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	156726000	shares
CY2021	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	156116000	shares
CY2020	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	155432000	shares
CY2022	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	5.40
CY2021	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	3.17
CY2020	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	5.54
CY2022	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	157137000	shares
CY2021	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	156376000	shares
CY2020	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	155517000	shares
CY2022	us-gaap	Profit Loss ProfitLoss	1020584000	usd
CY2020	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	145964000	usd
CY2022	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Noncontrolling Interest OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToNoncontrollingInterest	3156000	usd
CY2021	us-gaap	Profit Loss ProfitLoss	631932000	usd
CY2020	us-gaap	Profit Loss ProfitLoss	1018691000	usd
CY2022	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax	19396000	usd
CY2021	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax	8544000	usd
CY2020	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax	-7848000	usd
CY2022	us-gaap	Amortization Of Deferred Hedge Gains AmortizationOfDeferredHedgeGains	-6707000	usd
CY2021	us-gaap	Amortization Of Deferred Hedge Gains AmortizationOfDeferredHedgeGains	-6704000	usd
CY2020	us-gaap	Amortization Of Deferred Hedge Gains AmortizationOfDeferredHedgeGains	-6697000	usd
CY2022	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	26103000	usd
CY2021	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	15248000	usd
CY2020	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-1151000	usd
CY2022	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	1046687000	usd
CY2021	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	647180000	usd
CY2020	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	1017540000	usd
CY2022	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	171637000	usd
CY2021	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	126737000	usd
CY2021	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Noncontrolling Interest OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToNoncontrollingInterest	2020000	usd
CY2020	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Noncontrolling Interest OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToNoncontrollingInterest	404000	usd
CY2022	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	871894000	usd
CY2021	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	518423000	usd
CY2020	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	871172000	usd
CY2019Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	8014236000	usd
CY2020	us-gaap	Stock Issued During Period Value Conversion Of Units StockIssuedDuringPeriodValueConversionOfUnits	0	usd
CY2020	bxp	Equity Profit Loss EquityProfitLoss	1018691000	usd
CY2020	us-gaap	Dividends Dividends	689273000	usd
CY2020	us-gaap	Stock Issued During Period Value Employee Stock Purchase Plan StockIssuedDuringPeriodValueEmployeeStockPurchasePlan	759000	usd
CY2020	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	48621000	usd
CY2020	us-gaap	Proceeds From Minority Shareholders ProceedsFromMinorityShareholders	8219000	usd
CY2020	us-gaap	Payments To Minority Shareholders PaymentsToMinorityShareholders	58811000	usd
CY2020	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax	-7848000	usd
CY2020	us-gaap	Other Comprehensive Income Other Net Of Tax OtherComprehensiveIncomeOtherNetOfTax	6697000	usd
CY2020	us-gaap	Noncontrolling Interest Increase From Subsidiary Equity Issuance NoncontrollingInterestIncreaseFromSubsidiaryEquityIssuance	0	usd
CY2020Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	8339612000	usd
CY2021	us-gaap	Stock Issued During Period Value Conversion Of Units StockIssuedDuringPeriodValueConversionOfUnits	0	usd
CY2021	bxp	Equity Profit Loss EquityProfitLoss	631932000	usd
CY2021	us-gaap	Dividends Dividends	683843000	usd
CY2021	us-gaap	Stock Issued During Period Value Employee Stock Purchase Plan StockIssuedDuringPeriodValueEmployeeStockPurchasePlan	1004000	usd
CY2021	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	71383000	usd
CY2021	us-gaap	Other Significant Noncash Transaction Value Of Consideration Given1 OtherSignificantNoncashTransactionValueOfConsiderationGiven1	99689000	usd
CY2021	us-gaap	Proceeds From Repurchase Of Redeemable Preferred Stock ProceedsFromRepurchaseOfRedeemablePreferredStock	193623000	usd
CY2021	us-gaap	Preferred Stock Redemption Premium PreferredStockRedemptionPremium	6412000	usd
CY2021	us-gaap	Proceeds From Minority Shareholders ProceedsFromMinorityShareholders	18002000	usd
CY2021	us-gaap	Payments To Minority Shareholders PaymentsToMinorityShareholders	259764000	usd
CY2021	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax	8544000	usd
CY2021	us-gaap	Other Comprehensive Income Other Net Of Tax OtherComprehensiveIncomeOtherNetOfTax	6704000	usd
CY2021	us-gaap	Noncontrolling Interest Increase From Subsidiary Equity Issuance NoncontrollingInterestIncreaseFromSubsidiaryEquityIssuance	0	usd
CY2021Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	8033228000	usd
CY2022	us-gaap	Stock Issued During Period Value Conversion Of Units StockIssuedDuringPeriodValueConversionOfUnits	0	usd
CY2022	bxp	Equity Profit Loss EquityProfitLoss	1020584000	usd
CY2022	us-gaap	Dividends Dividends	686126000	usd
CY2022	us-gaap	Stock Issued During Period Value Employee Stock Purchase Plan StockIssuedDuringPeriodValueEmployeeStockPurchasePlan	1036000	usd
CY2022	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	53663000	usd
CY2022	us-gaap	Proceeds From Minority Shareholders ProceedsFromMinorityShareholders	849000	usd
CY2022	us-gaap	Payments To Minority Shareholders PaymentsToMinorityShareholders	85518000	usd
CY2022	us-gaap	Other Comprehensive Income Loss Cash Flow Hedge Gain Loss After Reclassification And Tax OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax	19396000	usd
CY2022	us-gaap	Other Comprehensive Income Other Net Of Tax OtherComprehensiveIncomeOtherNetOfTax	6707000	usd
CY2022	us-gaap	Noncontrolling Interest Increase From Subsidiary Equity Issuance NoncontrollingInterestIncreaseFromSubsidiaryEquityIssuance	0	usd
CY2022Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	8363819000	usd
CY2022	us-gaap	Profit Loss ProfitLoss	1020584000	usd
CY2021	us-gaap	Profit Loss ProfitLoss	631932000	usd
CY2020	us-gaap	Profit Loss ProfitLoss	1018691000	usd
CY2022	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	749775000	usd
CY2021	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	717336000	usd
CY2020	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	683751000	usd
CY2022	us-gaap	Operating Lease Right Of Use Asset Amortization Expense OperatingLeaseRightOfUseAssetAmortizationExpense	2427000	usd
CY2021	us-gaap	Operating Lease Right Of Use Asset Amortization Expense OperatingLeaseRightOfUseAssetAmortizationExpense	3516000	usd
CY2020	us-gaap	Operating Lease Right Of Use Asset Amortization Expense OperatingLeaseRightOfUseAssetAmortizationExpense	2234000	usd
CY2022	us-gaap	Share Based Compensation ShareBasedCompensation	52026000	usd
CY2021	us-gaap	Share Based Compensation ShareBasedCompensation	50860000	usd
CY2020	us-gaap	Share Based Compensation ShareBasedCompensation	44142000	usd
CY2022	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	-59840000	usd
CY2021	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	-2570000	usd
CY2020	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	-85110000	usd
CY2022	us-gaap	Equity Method Investment Dividends Or Distributions EquityMethodInvestmentDividendsOrDistributions	26827000	usd
CY2021	us-gaap	Equity Method Investment Dividends Or Distributions EquityMethodInvestmentDividendsOrDistributions	21542000	usd
CY2020	us-gaap	Equity Method Investment Dividends Or Distributions EquityMethodInvestmentDividendsOrDistributions	31892000	usd
CY2022	us-gaap	Gain Loss On Sale Of Investments GainLossOnSaleOfInvestments	-6453000	usd
CY2021	us-gaap	Gain Loss On Sale Of Investments GainLossOnSaleOfInvestments	5626000	usd
CY2020	us-gaap	Gain Loss On Sale Of Investments GainLossOnSaleOfInvestments	5261000	usd
CY2022	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	-224000	usd
CY2021	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	-1207000	usd
CY2020	us-gaap	Provision For Loan And Lease Losses ProvisionForLoanAndLeaseLosses	1849000	usd
CY2022	us-gaap	Paid In Kind Interest PaidInKindInterest	25831000	usd
CY2021	us-gaap	Paid In Kind Interest PaidInKindInterest	23368000	usd
CY2020	us-gaap	Paid In Kind Interest PaidInKindInterest	23384000	usd
CY2022	us-gaap	Accretion Expense AccretionExpense	0	usd
CY2021	us-gaap	Accretion Expense AccretionExpense	8500000	usd
CY2020	us-gaap	Accretion Expense AccretionExpense	0	usd
CY2022	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	0	usd
CY2021	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-45182000	usd
CY2020	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	0	usd
CY2022	us-gaap	Other Income OtherIncome	6624000	usd
CY2021	us-gaap	Other Income OtherIncome	0	usd
CY2020	us-gaap	Other Income OtherIncome	0	usd
CY2022	us-gaap	Gain Loss On Disposition Of Assets GainLossOnDispositionOfAssets	437019000	usd
CY2021	us-gaap	Gain Loss On Disposition Of Assets GainLossOnDispositionOfAssets	123660000	usd
CY2020	us-gaap	Gain Loss On Disposition Of Assets GainLossOnDispositionOfAssets	618982000	usd
CY2022	us-gaap	Sales Type And Direct Financing Leases Profit Loss SalesTypeAndDirectFinancingLeasesProfitLoss	10058000	usd
CY2021	us-gaap	Sales Type And Direct Financing Leases Profit Loss SalesTypeAndDirectFinancingLeasesProfitLoss	0	usd
CY2020	us-gaap	Sales Type And Direct Financing Leases Profit Loss SalesTypeAndDirectFinancingLeasesProfitLoss	0	usd
CY2022	us-gaap	Unrealized Gain Loss On Investments UnrealizedGainLossOnInvestments	-150000	usd
CY2021	us-gaap	Unrealized Gain Loss On Investments UnrealizedGainLossOnInvestments	0	usd
CY2020	us-gaap	Unrealized Gain Loss On Investments UnrealizedGainLossOnInvestments	0	usd
CY2022	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	7621000	usd
CY2021	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	-4820000	usd
CY2020	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	-22550000	usd
CY2022	us-gaap	Increase Decrease In Finance Receivables IncreaseDecreaseInFinanceReceivables	152000	usd
CY2021	us-gaap	Increase Decrease In Finance Receivables IncreaseDecreaseInFinanceReceivables	545000	usd
CY2020	us-gaap	Increase Decrease In Finance Receivables IncreaseDecreaseInFinanceReceivables	19000	usd
CY2022	us-gaap	Straight Line Rent StraightLineRent	98075000	usd
CY2021	us-gaap	Straight Line Rent StraightLineRent	101548000	usd
CY2020	us-gaap	Straight Line Rent StraightLineRent	97099000	usd
CY2022	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	-20099000	usd
CY2021	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	20811000	usd
CY2020	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	-12488000	usd
CY2022	us-gaap	Finance Lease Interest Payment On Liability FinanceLeaseInterestPaymentOnLiability	0	usd
CY2021	us-gaap	Finance Lease Interest Payment On Liability FinanceLeaseInterestPaymentOnLiability	0	usd
CY2020	us-gaap	Finance Lease Interest Payment On Liability FinanceLeaseInterestPaymentOnLiability	568000	usd
CY2022	us-gaap	Operating Lease Payments OperatingLeasePayments	-125000	usd
CY2021	us-gaap	Operating Lease Payments OperatingLeasePayments	23599000	usd
CY2020	us-gaap	Operating Lease Payments OperatingLeasePayments	-1533000	usd
CY2022	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	-22777000	usd
CY2021	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	20025000	usd
CY2020	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	-4059000	usd
CY2022	us-gaap	Increase Decrease In Interest Payable Net IncreaseDecreaseInInterestPayableNet	8989000	usd
CY2021	us-gaap	Increase Decrease In Interest Payable Net IncreaseDecreaseInInterestPayableNet	-10839000	usd
CY2020	us-gaap	Increase Decrease In Interest Payable Net IncreaseDecreaseInInterestPayableNet	16211000	usd
CY2022	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	-24120000	usd
CY2021	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	-28739000	usd
CY2020	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	17629000	usd
CY2022	us-gaap	Lease Cost LeaseCost	84057000	usd
CY2021	us-gaap	Lease Cost LeaseCost	62850000	usd
CY2020	us-gaap	Lease Cost LeaseCost	79772000	usd
CY2022	us-gaap	Adjustments To Reconcile Net Income Loss To Cash Provided By Used In Operating Activities AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivities	261815000	usd
CY2021	us-gaap	Adjustments To Reconcile Net Income Loss To Cash Provided By Used In Operating Activities AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivities	501295000	usd
CY2020	us-gaap	Adjustments To Reconcile Net Income Loss To Cash Provided By Used In Operating Activities AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivities	138149000	usd
CY2022	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	1282399000	usd
CY2021	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	1133227000	usd
CY2020	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	1156840000	usd
CY2022	us-gaap	Payments To Acquire And Develop Real Estate PaymentsToAcquireAndDevelopRealEstate	1320273000	usd
CY2021	us-gaap	Payments To Acquire And Develop Real Estate PaymentsToAcquireAndDevelopRealEstate	222260000	usd
CY2020	us-gaap	Payments To Acquire And Develop Real Estate PaymentsToAcquireAndDevelopRealEstate	137976000	usd
CY2022	us-gaap	Payments To Acquire Other Productive Assets PaymentsToAcquireOtherProductiveAssets	500273000	usd
CY2021	us-gaap	Payments To Acquire Other Productive Assets PaymentsToAcquireOtherProductiveAssets	513878000	usd
CY2020	us-gaap	Payments To Acquire Other Productive Assets PaymentsToAcquireOtherProductiveAssets	482507000	usd
CY2022	us-gaap	Payments For Capital Improvements PaymentsForCapitalImprovements	177004000	usd
CY2021	us-gaap	Payments For Capital Improvements PaymentsForCapitalImprovements	150998000	usd
CY2020	us-gaap	Payments For Capital Improvements PaymentsForCapitalImprovements	160126000	usd
CY2022	us-gaap	Payments For Tenant Improvements PaymentsForTenantImprovements	218685000	usd
CY2021	us-gaap	Payments For Tenant Improvements PaymentsForTenantImprovements	263952000	usd
CY2020	us-gaap	Payments For Tenant Improvements PaymentsForTenantImprovements	234423000	usd
CY2022	us-gaap	Proceeds From Sale Of Real Estate Heldforinvestment ProceedsFromSaleOfRealEstateHeldforinvestment	834770000	usd
CY2021	us-gaap	Proceeds From Sale Of Real Estate Heldforinvestment ProceedsFromSaleOfRealEstateHeldforinvestment	179887000	usd
CY2020	us-gaap	Proceeds From Sale Of Real Estate Heldforinvestment ProceedsFromSaleOfRealEstateHeldforinvestment	519303000	usd
CY2022	us-gaap	Proceeds From Sale Of Intangible Assets ProceedsFromSaleOfIntangibleAssets	6624000	usd
CY2021	us-gaap	Proceeds From Sale Of Intangible Assets ProceedsFromSaleOfIntangibleAssets	0	usd
CY2020	us-gaap	Proceeds From Sale Of Intangible Assets ProceedsFromSaleOfIntangibleAssets	0	usd
CY2022	us-gaap	Payments To Acquire Equity Method Investments PaymentsToAcquireEquityMethodInvestments	277581000	usd
CY2021	us-gaap	Payments To Acquire Equity Method Investments PaymentsToAcquireEquityMethodInvestments	98152000	usd
CY2020	us-gaap	Payments To Acquire Equity Method Investments PaymentsToAcquireEquityMethodInvestments	172436000	usd
CY2022	us-gaap	Proceeds From Equity Method Investment Dividends Or Distributions Return Of Capital ProceedsFromEquityMethodInvestmentDividendsOrDistributionsReturnOfCapital	37122000	usd
CY2021	us-gaap	Proceeds From Equity Method Investment Dividends Or Distributions Return Of Capital ProceedsFromEquityMethodInvestmentDividendsOrDistributionsReturnOfCapital	122000	usd
CY2020	us-gaap	Proceeds From Equity Method Investment Dividends Or Distributions Return Of Capital ProceedsFromEquityMethodInvestmentDividendsOrDistributionsReturnOfCapital	55298000	usd
CY2022	us-gaap	Proceeds From Sale Of Equity Method Investments ProceedsFromSaleOfEquityMethodInvestments	0	usd
CY2021	us-gaap	Proceeds From Sale Of Equity Method Investments ProceedsFromSaleOfEquityMethodInvestments	17789000	usd
CY2020	us-gaap	Proceeds From Sale Of Equity Method Investments ProceedsFromSaleOfEquityMethodInvestments	0	usd
CY2022	us-gaap	Payments To Acquire Other Investments PaymentsToAcquireOtherInvestments	2404000	usd
CY2021	us-gaap	Payments To Acquire Other Investments PaymentsToAcquireOtherInvestments	0	usd
CY2020	us-gaap	Payments To Acquire Other Investments PaymentsToAcquireOtherInvestments	0	usd
CY2022	us-gaap	Payments To Acquire Loans Receivable PaymentsToAcquireLoansReceivable	0	usd
CY2021	us-gaap	Payments To Acquire Loans Receivable PaymentsToAcquireLoansReceivable	0	usd
CY2020	us-gaap	Payments To Acquire Loans Receivable PaymentsToAcquireLoansReceivable	9800000	usd
CY2022	us-gaap	Proceeds From Mortgage Deposits ProceedsFromMortgageDeposits	10000000	usd
CY2021	us-gaap	Proceeds From Mortgage Deposits ProceedsFromMortgageDeposits	10035000	usd
CY2020	us-gaap	Proceeds From Mortgage Deposits ProceedsFromMortgageDeposits	6397000	usd
CY2022	us-gaap	Payments To Acquire Marketable Securities PaymentsToAcquireMarketableSecurities	4902000	usd
CY2021	us-gaap	Payments To Acquire Marketable Securities PaymentsToAcquireMarketableSecurities	1451000	usd
CY2020	us-gaap	Payments To Acquire Marketable Securities PaymentsToAcquireMarketableSecurities	2551000	usd
CY2022	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-1602802000	usd
CY2021	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-1039956000	usd
CY2020	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-613719000	usd
CY2022	us-gaap	Proceeds From Secured Notes Payable ProceedsFromSecuredNotesPayable	0	usd
CY2021	us-gaap	Proceeds From Secured Notes Payable ProceedsFromSecuredNotesPayable	1201388000	usd
CY2020	us-gaap	Proceeds From Secured Notes Payable ProceedsFromSecuredNotesPayable	0	usd
CY2022	us-gaap	Repayments Of Secured Debt RepaymentsOfSecuredDebt	0	usd
CY2021	us-gaap	Repayments Of Secured Debt RepaymentsOfSecuredDebt	832296000	usd
CY2020	us-gaap	Repayments Of Secured Debt RepaymentsOfSecuredDebt	17168000	usd
CY2022	us-gaap	Proceeds From Issuance Of Unsecured Debt ProceedsFromIssuanceOfUnsecuredDebt	749557000	usd
CY2021	us-gaap	Proceeds From Issuance Of Unsecured Debt ProceedsFromIssuanceOfUnsecuredDebt	1695996000	usd
CY2020	us-gaap	Proceeds From Issuance Of Unsecured Debt ProceedsFromIssuanceOfUnsecuredDebt	1248125000	usd
CY2022	us-gaap	Repayments Of Unsecured Debt RepaymentsOfUnsecuredDebt	0	usd
CY2021	us-gaap	Repayments Of Unsecured Debt RepaymentsOfUnsecuredDebt	1841500000	usd
CY2020	us-gaap	Repayments Of Unsecured Debt RepaymentsOfUnsecuredDebt	0	usd
CY2022	us-gaap	Proceeds From Lines Of Credit ProceedsFromLinesOfCredit	985000000	usd
CY2021	us-gaap	Proceeds From Lines Of Credit ProceedsFromLinesOfCredit	770000000	usd
CY2020	us-gaap	Proceeds From Lines Of Credit ProceedsFromLinesOfCredit	265000000	usd
CY2022	us-gaap	Repayments Of Lines Of Credit RepaymentsOfLinesOfCredit	1130000000	usd
CY2021	us-gaap	Repayments Of Lines Of Credit RepaymentsOfLinesOfCredit	625000000	usd
CY2020	us-gaap	Repayments Of Lines Of Credit RepaymentsOfLinesOfCredit	265000000	usd
CY2022	us-gaap	Proceeds From Other Debt ProceedsFromOtherDebt	730000000	usd
CY2021	us-gaap	Proceeds From Other Debt ProceedsFromOtherDebt	0	usd
CY2020	us-gaap	Proceeds From Other Debt ProceedsFromOtherDebt	0	usd
CY2022	us-gaap	Payments For Repurchase Of Redeemable Preferred Stock PaymentsForRepurchaseOfRedeemablePreferredStock	0	usd
CY2021	us-gaap	Payments For Repurchase Of Redeemable Preferred Stock PaymentsForRepurchaseOfRedeemablePreferredStock	200000000	usd
CY2020	us-gaap	Payments For Repurchase Of Redeemable Preferred Stock PaymentsForRepurchaseOfRedeemablePreferredStock	0	usd
CY2022	us-gaap	Finance Lease Principal Payments FinanceLeasePrincipalPayments	0	usd
CY2021	us-gaap	Finance Lease Principal Payments FinanceLeasePrincipalPayments	1250000	usd
CY2020	us-gaap	Finance Lease Principal Payments FinanceLeasePrincipalPayments	0	usd
CY2022	us-gaap	Repayments Of Other Debt RepaymentsOfOtherDebt	0	usd
CY2021	us-gaap	Repayments Of Other Debt RepaymentsOfOtherDebt	500000000	usd
CY2020	us-gaap	Repayments Of Other Debt RepaymentsOfOtherDebt	0	usd
CY2022	us-gaap	Payments Of Financing Costs PaymentsOfFinancingCosts	8460000	usd
CY2021	us-gaap	Payments Of Financing Costs PaymentsOfFinancingCosts	20757000	usd
CY2020	us-gaap	Payments Of Financing Costs PaymentsOfFinancingCosts	10416000	usd
CY2022	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	0	usd
CY2021	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	16186000	usd
CY2020	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	0	usd
CY2022	us-gaap	Payments Of Debt Extinguishment Costs PaymentsOfDebtExtinguishmentCosts	0	usd
CY2021	us-gaap	Payments Of Debt Extinguishment Costs PaymentsOfDebtExtinguishmentCosts	43036000	usd
CY2020	us-gaap	Payments Of Debt Extinguishment Costs PaymentsOfDebtExtinguishmentCosts	0	usd
CY2022	us-gaap	Proceeds From Issuance Or Sale Of Equity ProceedsFromIssuanceOrSaleOfEquity	-352000	usd
CY2021	us-gaap	Proceeds From Issuance Or Sale Of Equity ProceedsFromIssuanceOrSaleOfEquity	24214000	usd
CY2020	us-gaap	Proceeds From Issuance Or Sale Of Equity ProceedsFromIssuanceOrSaleOfEquity	3277000	usd
CY2022	us-gaap	Payments Of Dividends PaymentsOfDividends	685019000	usd
CY2021	us-gaap	Payments Of Dividends PaymentsOfDividends	683753000	usd
CY2020	us-gaap	Payments Of Dividends PaymentsOfDividends	688904000	usd
CY2022	us-gaap	Proceeds From Minority Shareholders ProceedsFromMinorityShareholders	849000	usd
CY2021	us-gaap	Proceeds From Minority Shareholders ProceedsFromMinorityShareholders	18002000	usd
CY2020	us-gaap	Proceeds From Minority Shareholders ProceedsFromMinorityShareholders	8219000	usd
CY2022	us-gaap	Payments To Minority Shareholders PaymentsToMinorityShareholders	85518000	usd
CY2021	us-gaap	Payments To Minority Shareholders PaymentsToMinorityShareholders	259764000	usd
CY2020	us-gaap	Payments To Minority Shareholders PaymentsToMinorityShareholders	58811000	usd
CY2022	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	556057000	usd
CY2021	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-1311442000	usd
CY2020	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	484322000	usd
CY2022	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	235654000	usd
CY2021	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-1218171000	usd
CY2020	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	1027443000	usd
CY2021Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	501158000	usd
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	1719329000	usd
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	691886000	usd
CY2022Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	736812000	usd
CY2021Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	501158000	usd
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	1719329000	usd
CY2021Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	452692000	usd
CY2020Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	1668742000	usd
CY2019Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	644950000	usd
CY2021Q4	us-gaap	Restricted Cash And Cash Equivalents At Carrying Value RestrictedCashAndCashEquivalentsAtCarryingValue	48466000	usd
CY2020Q4	us-gaap	Restricted Cash And Cash Equivalents At Carrying Value RestrictedCashAndCashEquivalentsAtCarryingValue	50587000	usd
CY2019Q4	us-gaap	Restricted Cash And Cash Equivalents At Carrying Value RestrictedCashAndCashEquivalentsAtCarryingValue	46936000	usd
CY2022Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	690333000	usd
CY2021Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	452692000	usd
CY2020Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	1668742000	usd
CY2022Q4	us-gaap	Restricted Cash And Cash Equivalents At Carrying Value RestrictedCashAndCashEquivalentsAtCarryingValue	46479000	usd
CY2021Q4	us-gaap	Restricted Cash And Cash Equivalents At Carrying Value RestrictedCashAndCashEquivalentsAtCarryingValue	48466000	usd
CY2020Q4	us-gaap	Restricted Cash And Cash Equivalents At Carrying Value RestrictedCashAndCashEquivalentsAtCarryingValue	50587000	usd
CY2022	us-gaap	Interest Paid InterestPaid	449903000	usd
CY2021	us-gaap	Interest Paid InterestPaid	465442000	usd
CY2020	us-gaap	Interest Paid InterestPaid	433492000	usd
CY2022	us-gaap	Interest Costs Capitalized InterestCostsCapitalized	52130000	usd
CY2021	us-gaap	Interest Costs Capitalized InterestCostsCapitalized	53097000	usd
CY2020	us-gaap	Interest Costs Capitalized InterestCostsCapitalized	53881000	usd
CY2022	bxp	Writeoffoffullydepreciatedrealestate Writeoffoffullydepreciatedrealestate	119534000	usd
CY2021	bxp	Writeoffoffullydepreciatedrealestate Writeoffoffullydepreciatedrealestate	239317000	usd
CY2020	bxp	Writeoffoffullydepreciatedrealestate Writeoffoffullydepreciatedrealestate	99494000	usd
CY2022	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	97586000	usd
CY2021	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	-25183000	usd
CY2020	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	-19848000	usd
CY2022	bxp	Construction In Progress Net Deconsolidated ConstructionInProgressNetDeconsolidated	-11316000	usd
CY2021	bxp	Construction In Progress Net Deconsolidated ConstructionInProgressNetDeconsolidated	-299947000	usd
CY2020	bxp	Construction In Progress Net Deconsolidated ConstructionInProgressNetDeconsolidated	0	usd
CY2022	us-gaap	Transfer To Investments TransferToInvestments	11316000	usd
CY2021	us-gaap	Transfer To Investments TransferToInvestments	107132000	usd
CY2020	us-gaap	Transfer To Investments TransferToInvestments	347898000	usd
CY2022	bxp	Sales Type Lease Origination SalesTypeLeaseOrigination	13045000	usd
CY2021	bxp	Sales Type Lease Origination SalesTypeLeaseOrigination	0	usd
CY2020	bxp	Sales Type Lease Origination SalesTypeLeaseOrigination	0	usd
CY2022	bxp	Derecognition Of Assets In Exchange For Sales Type Lease Obligation DerecognitionOfAssetsInExchangeForSalesTypeLeaseObligation	-2987000	usd
CY2021	bxp	Derecognition Of Assets In Exchange For Sales Type Lease Obligation DerecognitionOfAssetsInExchangeForSalesTypeLeaseObligation	0	usd
CY2020	bxp	Derecognition Of Assets In Exchange For Sales Type Lease Obligation DerecognitionOfAssetsInExchangeForSalesTypeLeaseObligation	0	usd
CY2022	bxp	Accruedrentalincomenetdeconsolidated Accruedrentalincomenetdeconsolidated	0	usd
CY2021	bxp	Accruedrentalincomenetdeconsolidated Accruedrentalincomenetdeconsolidated	0	usd
CY2020	bxp	Accruedrentalincomenetdeconsolidated Accruedrentalincomenetdeconsolidated	4558000	usd
CY2022	bxp	Transfer Of Tenant Lease Costs Real Estate TransferOfTenantLeaseCostsRealEstate	0	usd
CY2021	bxp	Transfer Of Tenant Lease Costs Real Estate TransferOfTenantLeaseCostsRealEstate	0	usd
CY2020	bxp	Transfer Of Tenant Lease Costs Real Estate TransferOfTenantLeaseCostsRealEstate	3462000	usd
CY2022	us-gaap	Transfer Of Other Real Estate TransferOfOtherRealEstate	0	usd
CY2021	us-gaap	Transfer Of Other Real Estate TransferOfOtherRealEstate	0	usd
CY2020	us-gaap	Transfer Of Other Real Estate TransferOfOtherRealEstate	111889000	usd
CY2022	bxp	Transfer Of Tenant Improvements Real Estate TransferOfTenantImprovementsRealEstate	0	usd
CY2021	bxp	Transfer Of Tenant Improvements Real Estate TransferOfTenantImprovementsRealEstate	0	usd
CY2020	bxp	Transfer Of Tenant Improvements Real Estate TransferOfTenantImprovementsRealEstate	12331000	usd
CY2022	bxp	Prepaid Expenses And Other Assets Net Deconsolidated PrepaidExpensesAndOtherAssetsNetDeconsolidated	0	usd
CY2021	bxp	Prepaid Expenses And Other Assets Net Deconsolidated PrepaidExpensesAndOtherAssetsNetDeconsolidated	-5011000	usd
CY2020	bxp	Prepaid Expenses And Other Assets Net Deconsolidated PrepaidExpensesAndOtherAssetsNetDeconsolidated	0	usd
CY2022	us-gaap	Noncash Or Part Noncash Acquisition Debt Assumed1 NoncashOrPartNoncashAcquisitionDebtAssumed1	0	usd
CY2021	us-gaap	Noncash Or Part Noncash Acquisition Debt Assumed1 NoncashOrPartNoncashAcquisitionDebtAssumed1	200311000	usd
CY2020	us-gaap	Noncash Or Part Noncash Acquisition Debt Assumed1 NoncashOrPartNoncashAcquisitionDebtAssumed1	0	usd
CY2022	bxp	Mortgage Notes Payable Deconsolidated MortgageNotesPayableDeconsolidated	0	usd
CY2021	bxp	Mortgage Notes Payable Deconsolidated MortgageNotesPayableDeconsolidated	-198381000	usd
CY2020	bxp	Mortgage Notes Payable Deconsolidated MortgageNotesPayableDeconsolidated	0	usd
CY2022	us-gaap	Other Significant Noncash Transaction Value Of Consideration Given1 OtherSignificantNoncashTransactionValueOfConsiderationGiven1	0	usd
CY2021	us-gaap	Other Significant Noncash Transaction Value Of Consideration Given1 OtherSignificantNoncashTransactionValueOfConsiderationGiven1	99689000	usd
CY2020	us-gaap	Other Significant Noncash Transaction Value Of Consideration Given1 OtherSignificantNoncashTransactionValueOfConsiderationGiven1	0	usd
CY2022	us-gaap	Capital Lease Obligations Incurred CapitalLeaseObligationsIncurred	0	usd
CY2021	us-gaap	Capital Lease Obligations Incurred CapitalLeaseObligationsIncurred	26887000	usd
CY2020	us-gaap	Capital Lease Obligations Incurred CapitalLeaseObligationsIncurred	0	usd
CY2022Q4	us-gaap	Dividends Payable Current And Noncurrent DividendsPayableCurrentAndNoncurrent	170643000	usd
CY2021Q4	us-gaap	Dividends Payable Current And Noncurrent DividendsPayableCurrentAndNoncurrent	169859000	usd
CY2020Q4	us-gaap	Dividends Payable Current And Noncurrent DividendsPayableCurrentAndNoncurrent	171082000	usd
CY2022	bxp	Conversions Of Noncontrolling Interests To Stockholders Equity ConversionsOfNoncontrollingInterestsToStockholdersEquity	6539000	usd
CY2021	bxp	Conversions Of Noncontrolling Interests To Stockholders Equity ConversionsOfNoncontrollingInterestsToStockholdersEquity	18386000	usd
CY2020	bxp	Conversions Of Noncontrolling Interests To Stockholders Equity ConversionsOfNoncontrollingInterestsToStockholdersEquity	29698000	usd
CY2022	bxp	Issuance Of Restricted Securities To Employees And Directors IssuanceOfRestrictedSecuritiesToEmployeesAndDirectors	48417000	usd
CY2021	bxp	Issuance Of Restricted Securities To Employees And Directors IssuanceOfRestrictedSecuritiesToEmployeesAndDirectors	44405000	usd
CY2020	bxp	Issuance Of Restricted Securities To Employees And Directors IssuanceOfRestrictedSecuritiesToEmployeesAndDirectors	42607000	usd
CY2022Q4	bxp	Restriction On Redemption Of Op Units From Date Of Issuance In Years RestrictionOnRedemptionOfOpUnitsFromDateOfIssuanceInYears	1	y
CY2022Q4	bxp	Op Unit Conversion Rate OpUnitConversionRate	1	shares
CY2022Q4	bxp	Common Stock Conversion Rate CommonStockConversionRate	1	shares
CY2022Q4	bxp	Op Unit Conversion Rate OpUnitConversionRate	1	shares
CY2022Q4	bxp	Numberof Vi Es NumberofVIEs	7
CY2022	us-gaap	Interest Costs Capitalized InterestCostsCapitalized	52100000	usd
CY2021	us-gaap	Interest Costs Capitalized InterestCostsCapitalized	53100000	usd
CY2020	us-gaap	Interest Costs Capitalized InterestCostsCapitalized	53900000	usd
CY2022	bxp	Salaries And Related Costs Capitalized SalariesAndRelatedCostsCapitalized	16100000	usd
CY2021	bxp	Salaries And Related Costs Capitalized SalariesAndRelatedCostsCapitalized	13700000	usd
CY2020	bxp	Salaries And Related Costs Capitalized SalariesAndRelatedCostsCapitalized	12900000	usd
CY2022Q4	bxp	Cash Fdic Insured Limit CashFDICInsuredLimit	250000	usd
CY2022Q4	bxp	Separate Unrestricted Cash For Deferred Compensation Plan SeparateUnrestrictedCashForDeferredCompensationPlan	32300000	usd
CY2021Q4	bxp	Separate Unrestricted Cash For Deferred Compensation Plan SeparateUnrestrictedCashForDeferredCompensationPlan	43600000	usd
CY2022	us-gaap	Gain Loss On Investments GainLossOnInvestments	-6500000	usd
CY2021	us-gaap	Gain Loss On Investments GainLossOnInvestments	5600000	usd
CY2020	us-gaap	Gain Loss On Investments GainLossOnInvestments	5300000	usd
CY2022	bxp	Accounts Receivable Collection Period Expected AccountsReceivableCollectionPeriodExpected	1
CY2022	us-gaap	Straight Line Rent Adjustments StraightLineRentAdjustments	108000000	usd
CY2021	us-gaap	Straight Line Rent Adjustments StraightLineRentAdjustments	104300000	usd
CY2020	us-gaap	Straight Line Rent Adjustments StraightLineRentAdjustments	104900000	usd
CY2022	bxp	Above And Below Market Rent Adjustments AboveAndBelowMarketRentAdjustments	9100000	usd
CY2021	bxp	Above And Below Market Rent Adjustments AboveAndBelowMarketRentAdjustments	4200000	usd
CY2020	bxp	Above And Below Market Rent Adjustments AboveAndBelowMarketRentAdjustments	6500000	usd
CY2022	us-gaap	Use Of Estimates UseOfEstimates	<div style="margin-top:14pt;text-indent:11.25pt"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-style:italic;font-weight:400;line-height:120%">Use of Estimates in the Preparation of Financial Statements</span></div><div style="margin-top:5pt;text-indent:24.75pt"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:120%">The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America (“GAAP”) 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.</span></div><div style="margin-top:9pt;text-indent:24.75pt"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:120%">The Company bases its estimates on historical experience and on various other assumptions that it considers to be reasonable under the circumstances, including the impact of extraordinary events such as COVID-19, the results of which form the basis for making significant judgments about the carrying values of assets and liabilities, assessments of future collectability, and other areas of the financial statements that are impacted by the use of estimates. Actual results may differ from these estimates under different assumptions or conditions.</span></div>
CY2022	bxp	Dividends Treatment For Federal Tax Purposes DividendsTreatmentForFederalTaxPurposes	3.95
CY2022	bxp	Dividends Treatment For Federal Tax Purposes Percentage DividendsTreatmentForFederalTaxPurposesPercentage	1.0000
CY2021	bxp	Dividends Treatment For Federal Tax Purposes DividendsTreatmentForFederalTaxPurposes	3.92
CY2021	bxp	Dividends Treatment For Federal Tax Purposes Percentage DividendsTreatmentForFederalTaxPurposesPercentage	1.0000
CY2020	bxp	Dividends Treatment For Federal Tax Purposes DividendsTreatmentForFederalTaxPurposes	3.88
CY2020	bxp	Dividends Treatment For Federal Tax Purposes Percentage DividendsTreatmentForFederalTaxPurposesPercentage	1.0000
CY2022	bxp	Reit Distribution Requirement REITDistributionRequirement	0.90
CY2022	bxp	Companys Taxable Income Distribution CompanysTaxableIncomeDistribution	1
CY2022Q4	us-gaap	Land Land	5189811000	usd
CY2021Q4	us-gaap	Land Land	5061169000	usd
CY2022Q4	us-gaap	Finance Lease Right Of Use Asset FinanceLeaseRightOfUseAsset	237510000	usd
CY2021Q4	us-gaap	Finance Lease Right Of Use Asset FinanceLeaseRightOfUseAsset	237507000	usd
CY2022Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	167351000	usd
CY2021Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	169778000	usd
CY2022Q4	us-gaap	Land Available For Development LandAvailableForDevelopment	721501000	usd
CY2021Q4	us-gaap	Land Available For Development LandAvailableForDevelopment	560355000	usd
CY2022Q4	us-gaap	Investment Building And Building Improvements InvestmentBuildingAndBuildingImprovements	15820724000	usd
CY2021Q4	us-gaap	Investment Building And Building Improvements InvestmentBuildingAndBuildingImprovements	14291214000	usd
CY2022Q4	us-gaap	Leasehold Improvements Gross LeaseholdImprovementsGross	3200743000	usd
CY2021Q4	us-gaap	Leasehold Improvements Gross LeaseholdImprovementsGross	2894025000	usd
CY2022Q4	us-gaap	Furniture And Fixtures Gross FurnitureAndFixturesGross	50310000	usd
CY2021Q4	us-gaap	Furniture And Fixtures Gross FurnitureAndFixturesGross	51695000	usd
CY2022Q4	us-gaap	Construction In Progress Gross ConstructionInProgressGross	406574000	usd
CY2021Q4	us-gaap	Construction In Progress Gross ConstructionInProgressGross	894172000	usd
CY2022Q4	bxp	Real Estate Investment Property At Cost Including Rightof Use Assets RealEstateInvestmentPropertyAtCostIncludingRightofUseAssets	25794524000	usd
CY2021Q4	bxp	Real Estate Investment Property At Cost Including Rightof Use Assets RealEstateInvestmentPropertyAtCostIncludingRightofUseAssets	24159915000	usd
CY2022Q4	us-gaap	Real Estate Investment Property Accumulated Depreciation RealEstateInvestmentPropertyAccumulatedDepreciation	6298082000	usd
CY2021Q4	us-gaap	Real Estate Investment Property Accumulated Depreciation RealEstateInvestmentPropertyAccumulatedDepreciation	5883961000	usd
CY2022Q4	us-gaap	Real Estate Investment Property Net RealEstateInvestmentPropertyNet	19496442000	usd
CY2021Q4	us-gaap	Real Estate Investment Property Net RealEstateInvestmentPropertyNet	18275954000	usd
CY2022Q2	us-gaap	Other Borrowings OtherBorrowings	730000000	usd
CY2021	us-gaap	Allowance For Loan And Lease Losses Write Offs AllowanceForLoanAndLeaseLossesWriteOffs	1300000	usd
CY2020	us-gaap	Allowance For Loan And Lease Losses Write Offs AllowanceForLoanAndLeaseLossesWriteOffs	90300000	usd
CY2022	us-gaap	Allowance For Loan And Lease Losses Write Offs AllowanceForLoanAndLeaseLossesWriteOffs	-1500000	usd
CY2021Q4	us-gaap	Number Of Properties Subject To Ground Leases NumberOfPropertiesSubjectToGroundLeases	4
CY2022	us-gaap	Operating Lease Cost OperatingLeaseCost	12700000	usd
CY2021	us-gaap	Operating Lease Cost OperatingLeaseCost	13151000	usd
CY2020	us-gaap	Operating Lease Cost OperatingLeaseCost	13948000	usd
CY2022	us-gaap	Finance Lease Right Of Use Asset Amortization FinanceLeaseRightOfUseAssetAmortization	697000	usd
CY2021	us-gaap	Finance Lease Right Of Use Asset Amortization FinanceLeaseRightOfUseAssetAmortization	547000	usd
CY2020	us-gaap	Finance Lease Right Of Use Asset Amortization FinanceLeaseRightOfUseAssetAmortization	56000	usd
CY2022	us-gaap	Finance Lease Interest Expense FinanceLeaseInterestExpense	3236000	usd
CY2021	us-gaap	Finance Lease Interest Expense FinanceLeaseInterestExpense	2471000	usd
CY2020	us-gaap	Finance Lease Interest Expense FinanceLeaseInterestExpense	583000	usd
CY2022Q4	bxp	Finance Leases Under Development FinanceLeasesUnderDevelopment	1
CY2021Q4	bxp	Finance Leases Under Development FinanceLeasesUnderDevelopment	2
CY2020Q4	bxp	Finance Leases Under Development FinanceLeasesUnderDevelopment	3
CY2022Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P49Y
CY2021Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P50Y
CY2022Q4	us-gaap	Finance Lease Weighted Average Remaining Lease Term1 FinanceLeaseWeightedAverageRemainingLeaseTerm1	P68Y
CY2021Q4	us-gaap	Finance Lease Weighted Average Remaining Lease Term1 FinanceLeaseWeightedAverageRemainingLeaseTerm1	P69Y
CY2022Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.057
CY2021Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.057
CY2022Q4	us-gaap	Finance Lease Weighted Average Discount Rate Percent FinanceLeaseWeightedAverageDiscountRatePercent	0.062
CY2021Q4	us-gaap	Finance Lease Weighted Average Discount Rate Percent FinanceLeaseWeightedAverageDiscountRatePercent	0.062
CY2022Q4	us-gaap	Lessee Operating Lease Liability Payments Due Next Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths	22415000	usd
CY2022Q4	us-gaap	Finance Lease Liability Payments Due Next Twelve Months FinanceLeaseLiabilityPaymentsDueNextTwelveMonths	9306000	usd
CY2022Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	22274000	usd
CY2022Q4	us-gaap	Finance Lease Liability Payments Due Year Two FinanceLeaseLiabilityPaymentsDueYearTwo	49343000	usd
CY2022Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	10308000	usd
CY2022Q4	us-gaap	Finance Lease Liability Payments Due Year Three FinanceLeaseLiabilityPaymentsDueYearThree	9971000	usd
CY2022Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	10100000	usd
CY2022Q4	us-gaap	Finance Lease Liability Payments Due Year Four FinanceLeaseLiabilityPaymentsDueYearFour	10166000	usd
CY2022Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Five LesseeOperatingLeaseLiabilityPaymentsDueYearFive	9885000	usd
CY2022Q4	us-gaap	Finance Lease Liability Payments Due Year Five FinanceLeaseLiabilityPaymentsDueYearFive	10364000	usd
CY2022Q4	us-gaap	Operating Leases Future Minimum Payments Due Thereafter OperatingLeasesFutureMinimumPaymentsDueThereafter	528915000	usd
CY2022Q4	us-gaap	Finance Lease Liability Payments Due After Year Five FinanceLeaseLiabilityPaymentsDueAfterYearFive	1352647000	usd
CY2022Q4	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	603897000	usd
CY2022Q4	us-gaap	Finance Lease Liability Payments Due FinanceLeaseLiabilityPaymentsDue	1441797000	usd
CY2022Q4	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	399211000	usd
CY2022Q4	us-gaap	Finance Lease Liability Undiscounted Excess Amount FinanceLeaseLiabilityUndiscountedExcessAmount	1192462000	usd
CY2022Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	204686000	usd
CY2022Q4	us-gaap	Finance Lease Liability FinanceLeaseLiability	249335000	usd
CY2022Q4	bxp	Lessee Purchase Option Reasonably Certain Of Exercising LesseePurchaseOptionReasonablyCertainOfExercising	38700000	usd
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due Next Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths	19623000	usd
CY2021Q4	us-gaap	Finance Lease Liability Payments Due Next Twelve Months FinanceLeaseLiabilityPaymentsDueNextTwelveMonths	8762000	usd
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	25333000	usd
CY2021Q4	us-gaap	Finance Lease Liability Payments Due Year Two FinanceLeaseLiabilityPaymentsDueYearTwo	10826000	usd
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	10085000	usd
CY2021Q4	us-gaap	Finance Lease Liability Payments Due Year Three FinanceLeaseLiabilityPaymentsDueYearThree	48605000	usd
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	10307000	usd
CY2021Q4	us-gaap	Finance Lease Liability Payments Due Year Four FinanceLeaseLiabilityPaymentsDueYearFour	9971000	usd
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Five LesseeOperatingLeaseLiabilityPaymentsDueYearFive	10100000	usd
CY2021Q4	us-gaap	Finance Lease Liability Payments Due Year Five FinanceLeaseLiabilityPaymentsDueYearFive	10166000	usd
CY2021Q4	us-gaap	Operating Leases Future Minimum Payments Due Thereafter OperatingLeasesFutureMinimumPaymentsDueThereafter	538801000	usd
CY2021Q4	us-gaap	Finance Lease Liability Payments Due After Year Five FinanceLeaseLiabilityPaymentsDueAfterYearFive	1363011000	usd
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	614249000	usd
CY2021Q4	us-gaap	Finance Lease Liability Payments Due FinanceLeaseLiabilityPaymentsDue	1451341000	usd
CY2021Q4	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	409688000	usd
CY2021Q4	us-gaap	Finance Lease Liability Undiscounted Excess Amount FinanceLeaseLiabilityUndiscountedExcessAmount	1206920000	usd
CY2021Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	204561000	usd
CY2021Q4	us-gaap	Finance Lease Liability FinanceLeaseLiability	244421000	usd
CY2021Q4	bxp	Lessee Purchase Option Reasonably Certain Of Exercising LesseePurchaseOptionReasonablyCertainOfExercising	38700000	usd
CY2022	us-gaap	Operating Lease Lease Income Lease Payments OperatingLeaseLeaseIncomeLeasePayments	2426007000	usd
CY2021	us-gaap	Operating Lease Lease Income Lease Payments OperatingLeaseLeaseIncomeLeasePayments	2319362000	usd
CY2020	us-gaap	Operating Lease Lease Income Lease Payments OperatingLeaseLeaseIncomeLeasePayments	2211915000	usd
CY2022	us-gaap	Operating Lease Variable Lease Income OperatingLeaseVariableLeaseIncome	492361000	usd
CY2021	us-gaap	Operating Lease Variable Lease Income OperatingLeaseVariableLeaseIncome	433652000	usd
CY2020	us-gaap	Operating Lease Variable Lease Income OperatingLeaseVariableLeaseIncome	434346000	usd
CY2022	us-gaap	Operating Lease Lease Income OperatingLeaseLeaseIncome	2918368000	usd
CY2021	us-gaap	Operating Lease Lease Income OperatingLeaseLeaseIncome	2753014000	usd
CY2020	us-gaap	Operating Lease Lease Income OperatingLeaseLeaseIncome	2646261000	usd
CY2022Q4	us-gaap	Lessor Operating Lease Payments To Be Received Next Twelve Months LessorOperatingLeasePaymentsToBeReceivedNextTwelveMonths	2338610000	usd
CY2022Q4	us-gaap	Lessor Operating Lease Payments To Be Received Two Years LessorOperatingLeasePaymentsToBeReceivedTwoYears	2321135000	usd
CY2022Q4	us-gaap	Lessor Operating Lease Payments To Be Received Three Years LessorOperatingLeasePaymentsToBeReceivedThreeYears	2279700000	usd
CY2022Q4	us-gaap	Lessor Operating Lease Payments To Be Received Four Years LessorOperatingLeasePaymentsToBeReceivedFourYears	2212455000	usd
CY2022Q4	us-gaap	Lessor Operating Lease Payments To Be Received Five Years LessorOperatingLeasePaymentsToBeReceivedFiveYears	2094014000	usd
CY2022Q4	us-gaap	Lessor Operating Lease Payments To Be Received Thereafter LessorOperatingLeasePaymentsToBeReceivedThereafter	13020102000	usd
CY2021	bxp	Number Of Tenants Above Concentration Amount NumberOfTenantsAboveConcentrationAmount	0
CY2020	bxp	Number Of Tenants Above Concentration Amount NumberOfTenantsAboveConcentrationAmount	0
CY2022	bxp	Number Of Tenants Above Concentration Amount NumberOfTenantsAboveConcentrationAmount	0
CY2022Q4	us-gaap	Sales Type Lease Lease Receivable SalesTypeLeaseLeaseReceivable	13000000	usd
CY2022Q4	us-gaap	Sales Type Lease Unguaranteed Residual Asset SalesTypeLeaseUnguaranteedResidualAsset	17000	usd
CY2022Q4	us-gaap	Sales Type And Direct Financing Leases Profit Loss SalesTypeAndDirectFinancingLeasesProfitLoss	10100000	usd
CY2022Q4	us-gaap	Sales Type And Direct Financing Leases Lease Receivable Payments To Be Received Next Twelve Months SalesTypeAndDirectFinancingLeasesLeaseReceivablePaymentsToBeReceivedNextTwelveMonths	0	usd
CY2022Q4	us-gaap	Sales Type And Direct Financing Leases Lease Receivable Payments To Be Received Two Years SalesTypeAndDirectFinancingLeasesLeaseReceivablePaymentsToBeReceivedTwoYears	31000	usd
CY2022Q4	us-gaap	Sales Type And Direct Financing Leases Lease Receivable Payments To Be Received Three Years SalesTypeAndDirectFinancingLeasesLeaseReceivablePaymentsToBeReceivedThreeYears	124000	usd
CY2022Q4	us-gaap	Sales Type And Direct Financing Leases Lease Receivable Payments To Be Received Four Years SalesTypeAndDirectFinancingLeasesLeaseReceivablePaymentsToBeReceivedFourYears	372000	usd
CY2022Q4	us-gaap	Sales Type And Direct Financing Leases Lease Receivable Payments To Be Received Five Years SalesTypeAndDirectFinancingLeasesLeaseReceivablePaymentsToBeReceivedFiveYears	756000	usd
CY2022Q4	us-gaap	Sales Type And Direct Financing Leases Lease Receivable Payments To Be Received Thereafter SalesTypeAndDirectFinancingLeasesLeaseReceivablePaymentsToBeReceivedThereafter	268249000	usd
CY2022Q4	us-gaap	Sales Type And Direct Financing Leases Lease Receivable Payments To Be Received SalesTypeAndDirectFinancingLeasesLeaseReceivablePaymentsToBeReceived	269532000	usd
CY2022Q4	us-gaap	Sales Type And Direct Financing Leases Lease Receivable Undiscounted Excess Amount SalesTypeAndDirectFinancingLeasesLeaseReceivableUndiscountedExcessAmount	256504000	usd
CY2022Q4	us-gaap	Sales Type Lease Lease Receivable SalesTypeLeaseLeaseReceivable	13028000	usd
CY2022Q4	us-gaap	Sales Type Lease Unguaranteed Residual Asset SalesTypeLeaseUnguaranteedResidualAsset	17000	usd
CY2022Q4	us-gaap	Sales Type Lease Net Investment In Lease Allowance For Credit Loss SalesTypeLeaseNetInvestmentInLeaseAllowanceForCreditLoss	-234000	usd
CY2022Q4	us-gaap	Sales Type Lease Net Investment In Lease After Allowance For Credit Loss Current SalesTypeLeaseNetInvestmentInLeaseAfterAllowanceForCreditLossCurrent	12811000	usd
CY2022Q4	us-gaap	Deferred Costs Leasing Gross DeferredCostsLeasingGross	1095231000	usd
CY2021Q4	us-gaap	Deferred Costs Leasing Gross DeferredCostsLeasingGross	1011229000	usd
CY2022Q4	us-gaap	Deferred Offering Costs DeferredOfferingCosts	19311000	usd
CY2021Q4	us-gaap	Deferred Offering Costs DeferredOfferingCosts	19231000	usd
CY2022Q4	bxp	Deferred Costs Gross DeferredCostsGross	1114542000	usd
CY2021Q4	bxp	Deferred Costs Gross DeferredCostsGross	1030460000	usd
CY2022Q4	bxp	Accumulated Amortization Leasing And Financing Costs AccumulatedAmortizationLeasingAndFinancingCosts	381260000	usd
CY2021Q4	bxp	Accumulated Amortization Leasing And Financing Costs AccumulatedAmortizationLeasingAndFinancingCosts	411662000	usd
CY2022Q4	us-gaap	Deferred Costs Current And Noncurrent DeferredCostsCurrentAndNoncurrent	733282000	usd
CY2021Q4	us-gaap	Deferred Costs Current And Noncurrent DeferredCostsCurrentAndNoncurrent	618798000	usd
CY2022Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Next Twelve Months FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths	27659000	usd
CY2022Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Two FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	21595000	usd
CY2022Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Three FiniteLivedIntangibleAssetsAmortizationExpenseYearThree	21419000	usd
CY2022Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Four FiniteLivedIntangibleAssetsAmortizationExpenseYearFour	20571000	usd
CY2022Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Five FiniteLivedIntangibleAssetsAmortizationExpenseYearFive	18214000	usd
CY2022Q4	bxp	Investments In Affiliates Subsidiaries Associates And Joint Venturesnet InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVenturesnet	1630485000	usd
CY2021Q4	bxp	Investments In Affiliates Subsidiaries Associates And Joint Venturesnet InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVenturesnet	1445926000	usd
CY2022	bxp	Schedule Of Statements Of Operations Of Unconsolidated Joint Ventures Text Bock ScheduleOfStatementsOfOperationsOfUnconsolidatedJointVenturesTextBock	<div style="margin-top:14pt;text-indent:24.75pt"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:120%">The combined summarized statements of operations of the Company’s unconsolidated joint ventures are as follows:</span><span style="color:#000000;font-family:'Arial',sans-serif;font-size:9pt;font-weight:400;line-height:120%"> </span></div><div style="margin-top:5pt"><table style="border-collapse:collapse;display:inline-table;margin-bottom:5pt;vertical-align:text-bottom;width:100.000%"><tr><td style="width:1.0%"/><td style="width:57.671%"/><td style="width:0.1%"/><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td style="width:1.0%"/><td style="width:11.180%"/><td style="width:0.1%"/><td style="width:0.1%"/><td style="width:1.992%"/><td style="width:0.1%"/><td style="width:1.0%"/><td style="width:11.180%"/><td style="width:0.1%"/><td style="width:0.1%"/><td style="width:1.992%"/><td style="width:0.1%"/><td style="width:1.0%"/><td style="width:11.185%"/><td style="width:0.1%"/></tr><tr><td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:9pt;font-weight:400;line-height:100%"> </span></td><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="15" style="padding:2px 1pt;text-align:center;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:9pt;font-weight:700;line-height:100%">Year ended December 31,</span></td></tr><tr><td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:9pt;font-weight:400;line-height:100%"> </span></td><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="3" style="border-top:1pt solid #000;padding:2px 1pt;text-align:center;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:9pt;font-weight:700;line-height:100%">2022</span></td><td colspan="3" style="border-top:1pt solid #000;padding:0 1pt"/><td colspan="3" style="border-bottom:1pt solid #000000;border-top:1pt solid #000;padding:2px 1pt;text-align:center;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:9pt;font-weight:700;line-height:100%">2021</span></td><td colspan="3" style="border-top:1pt solid #000;padding:0 1pt"/><td colspan="3" style="border-bottom:1pt solid #000000;border-top:1pt solid #000;padding:2px 1pt;text-align:center;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:9pt;font-weight:700;line-height:100%">2020</span></td></tr><tr><td colspan="3" style="padding:2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:9pt;font-weight:400;line-height:100%"> </span></td><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="15" style="border-top:1pt solid #000000;padding:2px 1pt;text-align:center;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:9pt;font-weight:700;line-height:100%">(in thousands)</span></td></tr><tr><td colspan="3" style="background-color:#cceeff;padding:2px 1pt;text-align:left;vertical-align:top"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:100%">Total revenue (1)</span></td><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:100%">$</span></td><td style="background-color:#cceeff;padding:2px 0;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:100%">512,078 </span></td><td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/><td colspan="3" style="background-color:#cceeff;padding:0 1pt"/><td style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:100%">$</span></td><td style="background-color:#cceeff;padding:2px 0;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:100%">383,649 </span></td><td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/><td colspan="3" style="background-color:#cceeff;padding:0 1pt"/><td style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:100%">$</span></td><td style="background-color:#cceeff;padding:2px 0;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:100%">319,560 </span></td><td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/></tr><tr><td colspan="3" style="background-color:#ffffff;padding:2px 1pt;text-align:left;vertical-align:top"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:100%">Expenses</span></td><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="3" style="background-color:#ffffff;padding:0 1pt"/><td colspan="3" style="background-color:#ffffff;padding:0 1pt"/><td colspan="3" style="background-color:#ffffff;padding:0 1pt"/><td colspan="3" style="background-color:#ffffff;padding:0 1pt"/><td colspan="3" style="background-color:#ffffff;padding:0 1pt"/></tr><tr><td colspan="3" style="background-color:#cceeff;padding:2px 1pt 2px 19pt;text-align:left;vertical-align:top"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:100%">Operating</span></td><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:100%">198,632 </span></td><td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/><td colspan="3" style="background-color:#cceeff;padding:0 1pt"/><td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:100%">158,498 </span></td><td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/><td colspan="3" style="background-color:#cceeff;padding:0 1pt"/><td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:100%">144,347 </span></td><td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/></tr><tr><td colspan="3" style="background-color:#ffffff;padding:2px 1pt 2px 19pt;text-align:left;vertical-align:top"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:100%">Transaction costs</span></td><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:100%">837 </span></td><td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/><td colspan="3" style="background-color:#ffffff;padding:0 1pt"/><td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:100%">470 </span></td><td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/><td colspan="3" style="background-color:#ffffff;padding:0 1pt"/><td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:100%">1,027 </span></td><td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/></tr><tr><td colspan="3" style="background-color:#cceeff;padding:2px 1pt 2px 19pt;text-align:left;vertical-align:top"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:100%">Depreciation and amortization</span></td><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:100%">181,041 </span></td><td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/><td colspan="3" style="background-color:#cceeff;padding:0 1pt"/><td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:100%">147,121 </span></td><td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/><td colspan="3" style="background-color:#cceeff;padding:0 1pt"/><td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:100%">141,853 </span></td><td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/></tr><tr><td colspan="3" style="background-color:#ffffff;padding:2px 1pt;text-align:left;vertical-align:top"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:100%">Total expenses</span></td><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="2" style="background-color:#ffffff;border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:100%">380,510 </span></td><td style="background-color:#ffffff;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/><td colspan="3" style="background-color:#ffffff;padding:0 1pt"/><td colspan="2" style="background-color:#ffffff;border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:100%">306,089 </span></td><td style="background-color:#ffffff;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/><td colspan="3" style="background-color:#ffffff;padding:0 1pt"/><td colspan="2" style="background-color:#ffffff;border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:100%">287,227 </span></td><td style="background-color:#ffffff;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/></tr><tr><td colspan="3" style="background-color:#cceeff;padding:2px 1pt;text-align:left;vertical-align:top"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:100%">Other income (expense)</span></td><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="3" style="background-color:#cceeff;padding:0 1pt"/><td colspan="3" style="background-color:#cceeff;padding:0 1pt"/><td colspan="3" style="background-color:#cceeff;padding:0 1pt"/><td colspan="3" style="background-color:#cceeff;padding:0 1pt"/><td colspan="3" style="background-color:#cceeff;padding:0 1pt"/></tr><tr><td colspan="3" style="background-color:#ffffff;padding:2px 1pt 2px 19pt;text-align:left;vertical-align:top"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:100%">Loss from early extinguishment of debt</span></td><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:100%">(1,327)</span></td><td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/><td colspan="3" style="background-color:#ffffff;padding:0 1pt"/><td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:100%">— </span></td><td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/><td colspan="3" style="background-color:#ffffff;padding:0 1pt"/><td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:100%">— </span></td><td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/></tr><tr><td colspan="3" style="background-color:#cceeff;padding:2px 1pt 2px 19pt;text-align:left;vertical-align:top"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:100%">Interest expense</span></td><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:100%">(154,065)</span></td><td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/><td colspan="3" style="background-color:#cceeff;padding:0 1pt"/><td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:100%">(108,884)</span></td><td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/><td colspan="3" style="background-color:#cceeff;padding:0 1pt"/><td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:100%">(98,051)</span></td><td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/></tr><tr><td colspan="3" style="background-color:#ffffff;padding:2px 1pt 2px 19pt;text-align:left;vertical-align:top"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:100%">Unrealized gain on derivative instruments</span></td><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:100%">1,681 </span></td><td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/><td colspan="3" style="background-color:#ffffff;padding:0 1pt"/><td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:100%">— </span></td><td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/><td colspan="3" style="background-color:#ffffff;padding:0 1pt"/><td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:100%">— </span></td><td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/></tr><tr><td colspan="3" style="background-color:#cceeff;padding:2px 1pt 2px 19pt;text-align:left;vertical-align:top"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:100%">Gains on sales of real estate (2)</span></td><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:100%">— </span></td><td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/><td colspan="3" style="background-color:#cceeff;padding:0 1pt"/><td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:100%">— </span></td><td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/><td colspan="3" style="background-color:#cceeff;padding:0 1pt"/><td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:100%">11,737 </span></td><td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/></tr><tr><td colspan="3" style="background-color:#ffffff;padding:2px 1pt 2px 37pt;text-align:left;vertical-align:top"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:100%">Net loss</span></td><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td style="background-color:#ffffff;border-top:1pt solid #000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:100%">$</span></td><td style="background-color:#ffffff;border-top:1pt solid #000;padding:2px 0;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:100%">(22,143)</span></td><td style="background-color:#ffffff;border-top:1pt solid #000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/><td colspan="3" style="background-color:#ffffff;padding:0 1pt"/><td style="background-color:#ffffff;border-top:1pt solid #000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:100%">$</span></td><td style="background-color:#ffffff;border-top:1pt solid #000;padding:2px 0;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:100%">(31,324)</span></td><td style="background-color:#ffffff;border-top:1pt solid #000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/><td colspan="3" style="background-color:#ffffff;padding:0 1pt"/><td style="background-color:#ffffff;border-top:1pt solid #000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:100%">$</span></td><td style="background-color:#ffffff;border-top:1pt solid #000;padding:2px 0;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:100%">(53,981)</span></td><td style="background-color:#ffffff;border-top:1pt solid #000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/></tr><tr style="height:15pt"><td colspan="3" style="background-color:#cceeff;padding:0 1pt"/><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="3" style="background-color:#cceeff;border-top:3pt double #000;padding:0 1pt"/><td colspan="3" style="background-color:#cceeff;padding:0 1pt"/><td colspan="3" style="background-color:#cceeff;border-top:3pt double #000;padding:0 1pt"/><td colspan="3" style="background-color:#cceeff;padding:0 1pt"/><td colspan="3" style="background-color:#cceeff;border-top:3pt double #000000;padding:0 1pt"/></tr><tr><td colspan="3" style="background-color:#ffffff;padding:2px 1pt;text-align:left;vertical-align:top"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:100%">Company’s share of net loss</span></td><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:100%">$</span></td><td style="background-color:#ffffff;padding:2px 0;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:100%">(2,551)</span></td><td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/><td colspan="3" style="background-color:#ffffff;padding:0 1pt"/><td style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:100%">$</span></td><td style="background-color:#ffffff;padding:2px 0;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:100%">(10,254)</span></td><td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/><td colspan="3" style="background-color:#ffffff;padding:0 1pt"/><td style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:100%">$</span></td><td style="background-color:#ffffff;padding:2px 0;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:100%">(16,256)</span></td><td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/></tr><tr><td colspan="3" style="background-color:#cceeff;padding:2px 1pt;text-align:left;vertical-align:top"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:100%">Gain on sale of investment (3)</span></td><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:100%">— </span></td><td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/><td colspan="3" style="background-color:#cceeff;padding:0 1pt"/><td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:100%">10,257 </span></td><td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/><td colspan="3" style="background-color:#cceeff;padding:0 1pt"/><td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:100%">— </span></td><td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/></tr><tr><td colspan="3" style="background-color:#ffffff;padding:2px 1pt;text-align:left;vertical-align:top"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:100%">Impairment loss on investment (4)</span></td><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:100%">(50,705)</span></td><td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/><td colspan="3" style="background-color:#ffffff;padding:0 1pt"/><td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:100%">— </span></td><td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/><td colspan="3" style="background-color:#ffffff;padding:0 1pt"/><td colspan="2" style="background-color:#ffffff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:100%">(60,524)</span></td><td style="background-color:#ffffff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/></tr><tr><td colspan="3" style="background-color:#cceeff;padding:2px 1pt;text-align:left;vertical-align:top"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:100%">Basis differential (5)</span></td><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:100%">(6,584)</span></td><td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/><td colspan="3" style="background-color:#cceeff;padding:0 1pt"/><td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:100%">(2,573)</span></td><td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/><td colspan="3" style="background-color:#cceeff;padding:0 1pt"/><td colspan="2" style="background-color:#cceeff;padding:2px 0 2px 1pt;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:100%">(8,330)</span></td><td style="background-color:#cceeff;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/></tr><tr><td colspan="3" style="background-color:#ffffff;padding:2px 1pt;text-align:left;vertical-align:top"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:100%">Loss from unconsolidated joint ventures</span></td><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td colspan="3" style="display:none"/><td style="background-color:#ffffff;border-bottom:3pt double #000000;border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:100%">$</span></td><td style="background-color:#ffffff;border-bottom:3pt double #000000;border-top:1pt solid #000000;padding:2px 0;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:100%">(59,840)</span></td><td style="background-color:#ffffff;border-bottom:3pt double #000000;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/><td colspan="3" style="background-color:#ffffff;padding:0 1pt"/><td style="background-color:#ffffff;border-bottom:3pt double #000000;border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:100%">$</span></td><td style="background-color:#ffffff;border-bottom:3pt double #000000;border-top:1pt solid #000000;padding:2px 0;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:100%">(2,570)</span></td><td style="background-color:#ffffff;border-bottom:3pt double #000000;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/><td colspan="3" style="background-color:#ffffff;padding:0 1pt"/><td style="background-color:#ffffff;border-bottom:3pt double #000000;border-top:1pt solid #000000;padding:2px 0 2px 1pt;text-align:left;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:100%">$</span></td><td style="background-color:#ffffff;border-bottom:3pt double #000000;border-top:1pt solid #000000;padding:2px 0;text-align:right;vertical-align:bottom"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:100%">(85,110)</span></td><td style="background-color:#ffffff;border-bottom:3pt double #000000;border-top:1pt solid #000000;padding:2px 1pt 2px 0;text-align:right;vertical-align:bottom"/></tr></table></div><div><span style="color:#000000;font-family:'Arial',sans-serif;font-size:10pt;font-weight:400;line-height:120%">_______________ </span></div><div style="padding-left:27pt;text-indent:-18pt"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:9pt;font-weight:400;line-height:120%">(1)</span><span style="color:#000000;font-family:'Arial',sans-serif;font-size:9pt;font-weight:400;line-height:120%;padding-left:7.02pt">Includes straight-line rent adjustments of approximately $62.9 million, $17.2 million and $(10.1) million for the years ended December 31, 2022, 2021 and 2020, respectively. </span></div><div style="padding-left:27pt;text-indent:-18pt"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:9pt;font-weight:400;line-height:120%">(2)</span><span style="color:#000000;font-family:'Arial',sans-serif;font-size:9pt;font-weight:400;line-height:120%;padding-left:7.02pt">For the year ended December 31, 2020, represents the gain on sale of Annapolis Junction Building Eight and two land parcels. The gain on sale of real estate is included in Loss from Unconsolidated Joint Ventures in the Company’s Consolidated Statements of Operations.</span></div><div style="padding-left:27pt;text-indent:-18pt"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:9pt;font-weight:400;line-height:120%">(3)</span><span style="color:#000000;font-family:'Arial',sans-serif;font-size:9pt;font-weight:400;line-height:120%;padding-left:7.02pt">During the year ended December 31, 2021, the Company completed the sale of its 50% ownership interest in Annapolis Junction NFM LLC. The Company recognized a gain on sale of investment of approximately $10.3 million. </span></div><div style="padding-left:27pt;text-indent:-18pt"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:9pt;font-weight:400;line-height:120%">(4)</span><span style="color:#000000;font-family:'Arial',sans-serif;font-size:9pt;font-weight:400;line-height:120%;padding-left:7.02pt">During the years ended December 31, 2022 and December 31, 2020, the Company recognized an other-than-temporary impairment loss on its investment in the unconsolidated joint venture that owns Dock 72 in Brooklyn, New York totaling approximately $50.7 million and $60.5 million, respectively.</span></div><div style="padding-left:27pt;text-indent:-18pt"><span style="color:#000000;font-family:'Arial',sans-serif;font-size:9pt;font-weight:400;line-height:120%">(5)</span><span style="color:#000000;font-family:'Arial',sans-serif;font-size:9pt;font-weight:400;line-height:120%;padding-left:7.02pt">Includes straight-line rent adjustments of approximately $0.5 million, $0.8 million and $1.8 million for the years ended December 31, 2022, 2021 and 2020, respectively. Also includes net above-/below-market rent adjustments of approximately $0.4 million, <span id="i3a91973254494c35823ed11c2567b33d_12413"/>$0.4 million and $0.9 million for the years ended December 31, 2022, 2021 and 2020, respectively.</span></div>
CY2022	us-gaap	Debt Instrument Collateral DebtInstrumentCollateral	each collateralized by one or more buildings and related land included in real estate assets
CY2021	us-gaap	Debt Instrument Collateral DebtInstrumentCollateral	each collateralized by one or more buildings and related land included in real estate assets
CY2022Q4	bxp	Number Of Variable Mortgage Loans NumberOfVariableMortgageLoans	0
CY2021Q4	bxp	Number Of Variable Mortgage Loans NumberOfVariableMortgageLoans	0
CY2021Q2	us-gaap	Line Of Credit Facility Expiration Date1 LineOfCreditFacilityExpirationDate1	2026-06-15
CY2021Q2	bxp	Line Of Credit Additional Borrowing Capacity LineOfCreditAdditionalBorrowingCapacity	500000000	usd
CY2021Q2	us-gaap	Line Of Credit Facility Interest Rate Description LineOfCreditFacilityInterestRateDescription	At BPLP’s option, loans under the 2021 Credit Facility will bear interest at a rate per annum equal to (1) (a) in the case of loans denominated in Dollars, LIBOR, (b) in the case of loans denominated in Euro, EURIBOR, (c) in the case of loans denominated in Canadian Dollars, CDOR, and (d) in the case of loans denominated in Sterling, SONIA, in each case, plus a margin ranging from 70.0 to 140.0 basis points based on BPLP’s credit rating or (2) an alternate base rate equal to the greatest of (a) the Federal Funds rate plus 0.5%, (b) the Administrative Agent’s prime rate, (c) LIBOR for a one-month period plus 1.00%, and (d) 1.00%, in each case, plus a margin ranging from 0 to 40 basis points based on BPLP’s credit rating. The 2021 Credit Facility includes provisions which allow LIBOR Daily Floating Rate to be switched to SOFR.
CY2021Q2	bxp	Line Of Credit Facility Maximum Percent For Loan Advances LineOfCreditFacilityMaximumPercentForLoanAdvances	0.65
CY2022Q4	us-gaap	Debt Instrument Basis Spread On Variable Rate1 DebtInstrumentBasisSpreadOnVariableRate1	0.00775
CY2022Q4	bxp	Debt Instrument Alternate Basis Spread On Variable Rate DebtInstrumentAlternateBasisSpreadOnVariableRate	0
CY2022Q4	us-gaap	Line Of Credit Facility Commitment Fee Percentage LineOfCreditFacilityCommitmentFeePercentage	0.0015
CY2022Q4	bxp	Letter Of Credit And Performance Obligation LetterOfCreditAndPerformanceObligation	26500000	usd
CY2022Q4	bxp	Insurance Policy Limit InsurancePolicyLimit	1000000000	usd
CY2022Q4	bxp	Insurance Policy Limit InsurancePolicyLimit	1000000000	usd
CY2022	bxp	Per Occurrence Limit For Nbcr Coverage PerOccurrenceLimitForNbcrCoverage	1000000000	usd
CY2022Q4	bxp	Program Trigger Value ProgramTriggerValue	200000000	usd
CY2022	bxp	Program Trigger Coinsurance ProgramTriggerCoinsurance	0.20
CY2022	bxp	Programtriggerdeductible Programtriggerdeductible	0.20
CY2022	bxp	Per Occurrence Limit Of Earth Quake Insurance San Franciscoand Los Angeles PerOccurrenceLimitOfEarthQuakeInsuranceSanFranciscoandLosAngeles	330000000	usd
CY2022	bxp	Annual Aggregate Limit Of Earth Quake Insurance San Franciscoand Los Angeles AnnualAggregateLimitOfEarthQuakeInsuranceSanFranciscoandLosAngeles	330000000	usd
CY2022	bxp	Amount Of Earthquake Insurance Provided By Ixpllc As Direct Insurer San Franciscoand Los Angeles AmountOfEarthquakeInsuranceProvidedByIXPLLCAsDirectInsurerSanFranciscoandLosAngeles	30000000	usd
CY2022	bxp	Earthquake Deductible Insurance Percentage Of Value Of The Affected Property San Franciscoand Los Angeles EarthquakeDeductibleInsurancePercentageOfValueOfTheAffectedPropertySanFranciscoandLosAngeles	0.03
CY2022	bxp	Per Occurrence Limit Of Earthquake Insurance Seattle PerOccurrenceLimitOfEarthquakeInsuranceSeattle	110000000	usd
CY2022	bxp	Annual Aggregate Limit Of Earthquake Insurance Seattle AnnualAggregateLimitOfEarthquakeInsuranceSeattle	110000000	usd
CY2022	bxp	Earthquake Deductible Insurance Percentage Of Value Of The Affected Property Seattle EarthquakeDeductibleInsurancePercentageOfValueOfTheAffectedPropertySeattle	0.02
CY2022Q4	us-gaap	Minority Interest In Limited Partnerships MinorityInterestInLimitedPartnerships	1500000000	usd
CY2021Q4	us-gaap	Minority Interest In Limited Partnerships MinorityInterestInLimitedPartnerships	1600000000	usd
CY2022Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	156757867	shares
CY2022Q4	us-gaap	General Partners Capital Account Units Outstanding GeneralPartnersCapitalAccountUnitsOutstanding	1749682	shares
CY2022Q4	us-gaap	Limited Partners Capital Account Units Outstanding LimitedPartnersCapitalAccountUnitsOutstanding	155008185	shares
CY2022	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	0	shares
CY2021	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	247920	shares
CY2022	us-gaap	Conversion Of Stock Shares Issued1 ConversionOfStockSharesIssued1	182929	shares
CY2021	us-gaap	Conversion Of Stock Shares Issued1 ConversionOfStockSharesIssued1	523969	shares
CY2022Q4	us-gaap	Dividends Payable Amount Per Share DividendsPayableAmountPerShare	0.98
CY2022Q4	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.98
CY2022Q3	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.98
CY2022Q2	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.98
CY2022Q1	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.98
CY2021Q4	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.98
CY2021Q3	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.98
CY2021Q2	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.98
CY2021Q1	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.98
CY2020Q4	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.98
CY2020Q3	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.98
CY2020Q2	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.98
CY2020Q1	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.98
CY2022	bxp	Rental Revenue Class Office RentalRevenueClassOffice	2968412000	usd
CY2022	bxp	Rental Revenue Residential RentalRevenueResidential	57181000	usd
CY2022	bxp	Rental Revenue Total RentalRevenueTotal	3065075000	usd
CY2022	bxp	Percentage Of Total Revenue PercentageOfTotalRevenue	1.0000
CY2022	bxp	Rental Expenses Class Office RentalExpensesClassOffice	1078487000	usd
CY2022	bxp	Rental Expenses Residential RentalExpensesResidential	29583000	usd
CY2022	bxp	Rental Expenses Operating Expenses Total RentalExpensesOperatingExpensesTotal	1135548000	usd
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CY2022	bxp	Percentage Of Total Net Operating Income PercentageOfTotalNetOperatingIncome	1.0000
CY2022	bxp	Percentageof Companys Shareof Net Operating Income PercentageofCompanysShareofNetOperatingIncome	1.0000
CY2021	bxp	Rental Revenue Class Office RentalRevenueClassOffice	2792160000	usd
CY2021	bxp	Rental Revenue Residential RentalRevenueResidential	42668000	usd
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CY2021	bxp	Percentage Of Total Revenue PercentageOfTotalRevenue	1.0000
CY2021	bxp	Rental Expenses Class Office RentalExpensesClassOffice	996707000	usd
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CY2021	bxp	Percentage Of Total Rental Expenses PercentageOfTotalRentalExpenses	1.0000
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CY2021	bxp	Percentage Of Total Net Operating Income PercentageOfTotalNetOperatingIncome	1.0000
CY2021	bxp	Percentageof Companys Shareof Net Operating Income PercentageofCompanysShareofNetOperatingIncome	1.0000
CY2020	bxp	Rental Revenue Class Office RentalRevenueClassOffice	2678795000	usd
CY2020	bxp	Rental Revenue Residential RentalRevenueResidential	38146000	usd
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CY2020	bxp	Percentage Of Total Revenue PercentageOfTotalRevenue	1.0000
CY2020	bxp	Rental Expenses Class Office RentalExpensesClassOffice	998469000	usd
CY2020	bxp	Rental Expenses Residential RentalExpensesResidential	18739000	usd
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CY2020	bxp	Percentage Of Total Rental Expenses PercentageOfTotalRentalExpenses	1.0000
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CY2021	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	496223000	usd
CY2022	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	848947000	usd
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CY2022	us-gaap	Participating Securities Distributed And Undistributed Earnings Loss Basic ParticipatingSecuritiesDistributedAndUndistributedEarningsLossBasic	891000	usd
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CY2022	bxp	Allocationofundistributedearningstoparticipatingsecuritiespershares Allocationofundistributedearningstoparticipatingsecuritiespershares	-0.01
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CY2022	bxp	Weighted Average Number Of Shares Outstanding After Allocationof Undistributed Earningsto Participating Securities Basicinshares WeightedAverageNumberOfSharesOutstandingAfterAllocationofUndistributedEarningstoParticipatingSecuritiesBasicinshares	156726000	shares
CY2022	bxp	Earnings Per Share After Allocation Of Undistributed Earnings To Participating Securities Basic Dollars Per Share EarningsPerShareAfterAllocationOfUndistributedEarningsToParticipatingSecuritiesBasicDollarsPerShare	5.41
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CY2022	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	157137000	shares
CY2022	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	5.40
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CY2021	bxp	Allocationofundistributedearningstoparticipatingsecuritiesinshares Allocationofundistributedearningstoparticipatingsecuritiesinshares	0	shares
CY2021	bxp	Allocationofundistributedearningstoparticipatingsecuritiespershares Allocationofundistributedearningstoparticipatingsecuritiespershares	0
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CY2021	bxp	Weighted Average Number Of Shares Outstanding After Allocationof Undistributed Earningsto Participating Securities Basicinshares WeightedAverageNumberOfSharesOutstandingAfterAllocationofUndistributedEarningstoParticipatingSecuritiesBasicinshares	156116000	shares
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CY2020	bxp	Allocationofundistributedearningstoparticipatingsecuritiesinshares Allocationofundistributedearningstoparticipatingsecuritiesinshares	0	shares
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CY2021	bxp	Defined Contribution Plan Employer Matching Contribution Eligible Earnings Limit By Irs Amount DefinedContributionPlanEmployerMatchingContributionEligibleEarningsLimitByIRSAmount	290000	usd
CY2020	bxp	Defined Contribution Plan Employer Matching Contribution Eligible Earnings Limit By Irs Amount DefinedContributionPlanEmployerMatchingContributionEligibleEarningsLimitByIRSAmount	285000	usd
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CY2021	us-gaap	Defined Contribution Plan Employer Discretionary Contribution Amount DefinedContributionPlanEmployerDiscretionaryContributionAmount	4700000	usd
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CY2021Q4	us-gaap	Deferred Compensation Liability Current And Noncurrent DeferredCompensationLiabilityCurrentAndNoncurrent	42700000	usd
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CY2021	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	49700000	usd
CY2020	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	43000000	usd
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CY2021Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	103641	shares
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CY2021Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	103641	shares
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CY2022	bxp	Stock Issued During Period Shares Stock Options Exercise StockIssuedDuringPeriodSharesStockOptionsExercise	0	shares
CY2022	bxp	Exercised Weighted Averge Exercise Price ExercisedWeightedAvergeExercisePrice	0
CY2022Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	103641	shares
CY2022Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	97.01
CY2022Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	103641	shares
CY2022Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	97.01
CY2021Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	97.01
CY2022	bxp	Number Of Non Employee Directors Electing To Receive Deferred Stock Units NumberOfNonEmployeeDirectorsElectingToReceiveDeferredStockUnits	7	nonemployeedirectors
CY2022Q4	srt	Real Estate And Accumulated Depreciation Amount Of Encumbrances RealEstateAndAccumulatedDepreciationAmountOfEncumbrances	3272368000	usd
CY2022Q4	us-gaap	Real Estate And Accumulated Depreciation Initial Cost Of Land RealEstateAndAccumulatedDepreciationInitialCostOfLand	5373987000	usd
CY2022Q4	us-gaap	Real Estate And Accumulated Depreciation Initial Cost Of Buildings And Improvements RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements	14755092000	usd
CY2022Q4	us-gaap	Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Carrying Costs RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts	5615135000	usd
CY2022Q4	us-gaap	Real Estate And Accumulated Depreciation Carrying Amount Of Land RealEstateAndAccumulatedDepreciationCarryingAmountOfLand	5571327000	usd
CY2022Q4	us-gaap	Real Estate And Accumulated Depreciation Carrying Amount Of Buildings And Improvements RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements	19044812000	usd
CY2022Q4	us-gaap	Land Available For Development LandAvailableForDevelopment	721501000	usd
CY2022Q4	us-gaap	Construction In Progress Gross ConstructionInProgressGross	406574000	usd
CY2022Q4	bxp	Real Estate Gross At Carrying Value Excluding Furniture Fixtures And Equipment RealEstateGrossAtCarryingValueExcludingFurnitureFixturesAndEquipment	25744214000	usd
CY2022Q4	bxp	Real Estate Accumulated Depreciation Excluding Furniture Fixtures And Equipment RealEstateAccumulatedDepreciationExcludingFurnitureFixturesAndEquipment	6260992000	usd
CY2022Q4	us-gaap	Furniture And Fixtures Gross FurnitureAndFixturesGross	50310000	usd
CY2022Q4	srt	Real Estate Federal Income Tax Basis RealEstateFederalIncomeTaxBasis	23100000000	usd
CY2022Q4	bxp	Real Estate Aggregate Accumulated Depreciation For Tax Purposes RealEstateAggregateAccumulatedDepreciationForTaxPurposes	5000000000	usd
CY2021Q4	bxp	Real Estate Gross At Carrying Value Excluding Furniture Fixtures And Equipment RealEstateGrossAtCarryingValueExcludingFurnitureFixturesAndEquipment	24108220000	usd
CY2020Q4	bxp	Real Estate Gross At Carrying Value Excluding Furniture Fixtures And Equipment RealEstateGrossAtCarryingValueExcludingFurnitureFixturesAndEquipment	23303303000	usd
CY2019Q4	bxp	Real Estate Gross At Carrying Value Excluding Furniture Fixtures And Equipment RealEstateGrossAtCarryingValueExcludingFurnitureFixturesAndEquipment	22844697000	usd
CY2022	bxp	Real Estate Improvements Excluding Furniture Fixtures And Equipment RealEstateImprovementsExcludingFurnitureFixturesAndEquipment	2228000000	usd
CY2021	bxp	Real Estate Improvements Excluding Furniture Fixtures And Equipment RealEstateImprovementsExcludingFurnitureFixturesAndEquipment	1145084000	usd
CY2020	bxp	Real Estate Improvements Excluding Furniture Fixtures And Equipment RealEstateImprovementsExcludingFurnitureFixturesAndEquipment	996989000	usd
CY2022	bxp	Real Estate Cost Of Real Estate Sold Excluding Furniture Fixtures And Equipment RealEstateCostOfRealEstateSoldExcludingFurnitureFixturesAndEquipment	-592006000	usd
CY2021	bxp	Real Estate Cost Of Real Estate Sold Excluding Furniture Fixtures And Equipment RealEstateCostOfRealEstateSoldExcludingFurnitureFixturesAndEquipment	-340167000	usd
CY2020	bxp	Real Estate Cost Of Real Estate Sold Excluding Furniture Fixtures And Equipment RealEstateCostOfRealEstateSoldExcludingFurnitureFixturesAndEquipment	-538383000	usd
CY2022Q4	bxp	Real Estate Gross At Carrying Value Excluding Furniture Fixtures And Equipment RealEstateGrossAtCarryingValueExcludingFurnitureFixturesAndEquipment	25744214000	usd
CY2021Q4	bxp	Real Estate Gross At Carrying Value Excluding Furniture Fixtures And Equipment RealEstateGrossAtCarryingValueExcludingFurnitureFixturesAndEquipment	24108220000	usd
CY2020Q4	bxp	Real Estate Gross At Carrying Value Excluding Furniture Fixtures And Equipment RealEstateGrossAtCarryingValueExcludingFurnitureFixturesAndEquipment	23303303000	usd
CY2021Q4	bxp	Real Estate Accumulated Depreciation Excluding Furniture Fixtures And Equipment RealEstateAccumulatedDepreciationExcludingFurnitureFixturesAndEquipment	5848183000	usd
CY2020Q4	bxp	Real Estate Accumulated Depreciation Excluding Furniture Fixtures And Equipment RealEstateAccumulatedDepreciationExcludingFurnitureFixturesAndEquipment	5501637000	usd
CY2019Q4	bxp	Real Estate Accumulated Depreciation Excluding Furniture Fixtures And Equipment RealEstateAccumulatedDepreciationExcludingFurnitureFixturesAndEquipment	5239179000	usd
CY2022	bxp	Sec Schedule Iii Real Estate Accumulated Depreciation Depreciation Expense Excluding Furniture Fixtures And Equipment SECScheduleIIIRealEstateAccumulatedDepreciationDepreciationExpenseExcludingFurnitureFixturesAndEquipment	646020000	usd
CY2021	bxp	Sec Schedule Iii Real Estate Accumulated Depreciation Depreciation Expense Excluding Furniture Fixtures And Equipment SECScheduleIIIRealEstateAccumulatedDepreciationDepreciationExpenseExcludingFurnitureFixturesAndEquipment	623854000	usd
CY2020	bxp	Sec Schedule Iii Real Estate Accumulated Depreciation Depreciation Expense Excluding Furniture Fixtures And Equipment SECScheduleIIIRealEstateAccumulatedDepreciationDepreciationExpenseExcludingFurnitureFixturesAndEquipment	573898000	usd
CY2022	bxp	Real Estate Accumulated Depreciation Real Estate Sold Excluding Furniture Fixtures And Equipment RealEstateAccumulatedDepreciationRealEstateSoldExcludingFurnitureFixturesAndEquipment	-233211000	usd
CY2021	bxp	Real Estate Accumulated Depreciation Real Estate Sold Excluding Furniture Fixtures And Equipment RealEstateAccumulatedDepreciationRealEstateSoldExcludingFurnitureFixturesAndEquipment	-277308000	usd
CY2020	bxp	Real Estate Accumulated Depreciation Real Estate Sold Excluding Furniture Fixtures And Equipment RealEstateAccumulatedDepreciationRealEstateSoldExcludingFurnitureFixturesAndEquipment	-311440000	usd
CY2022Q4	bxp	Real Estate Accumulated Depreciation Excluding Furniture Fixtures And Equipment RealEstateAccumulatedDepreciationExcludingFurnitureFixturesAndEquipment	6260992000	usd
CY2021Q4	bxp	Real Estate Accumulated Depreciation Excluding Furniture Fixtures And Equipment RealEstateAccumulatedDepreciationExcludingFurnitureFixturesAndEquipment	5848183000	usd
CY2020Q4	bxp	Real Estate Accumulated Depreciation Excluding Furniture Fixtures And Equipment RealEstateAccumulatedDepreciationExcludingFurnitureFixturesAndEquipment	5501637000	usd

Files In Submission

Name	View Source	Status
0001656423-23-000013-index-headers.html	Edgar Link	pending
0001656423-23-000013-index.html	Edgar Link	pending
0001656423-23-000013.txt	Edgar Link	pending
0001656423-23-000013-xbrl.zip	Edgar Link	pending
bxp-20221231.htm	Edgar Link	pending
bxp-20221231.xsd	Edgar Link	pending
bxp-20221231_g1.jpg	Edgar Link	pending
bxp-20221231_g2.jpg	Edgar Link	pending
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bxp-20221231_g7.jpg	Edgar Link	pending
bxp-20221231_g8.jpg	Edgar Link	pending
bxpbplp-20221231ex211.htm	Edgar Link	pending
bxpbplp-20221231ex231.htm	Edgar Link	pending
bxpbplp-20221231ex232.htm	Edgar Link	pending
bxpbplp-20221231ex311.htm	Edgar Link	pending
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bxpbplp-20221231ex313.htm	Edgar Link	pending
bxpbplp-20221231ex314.htm	Edgar Link	pending
bxpbplp-20221231ex321.htm	Edgar Link	pending
bxpbplp-20221231ex322.htm	Edgar Link	pending
bxpbplp-20221231ex323.htm	Edgar Link	pending
bxpbplp-20221231ex324.htm	Edgar Link	pending
Financial_Report.xlsx	Edgar Link	pending
MetaLinks.json	Edgar Link	pending
R1.htm	Edgar Link	pending
R10.htm	Edgar Link	pending
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bxp-20221231_cal.xml	Edgar Link	unprocessable
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bxp-20221231_pre.xml	Edgar Link	unprocessable
FilingSummary.xml	Edgar Link	unprocessable
bxp-20221231_htm.xml	Edgar Link	completed
R2.htm	Edgar Link	pending
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report.css	Edgar Link	pending
Show.js	Edgar Link	pending

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$BXP
BXP Inc Stock $bxp

2023 Q1 Form 10-K Financial Statement

#000165642323000013 Filed on February 27, 2023

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$BXP BXP Inc Stock $bxp

2023 Q1 Form 10-K Financial Statement

#000165642323000013 Filed on February 27, 2023

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$BXP
BXP Inc Stock $bxp