$AIV
APARTMENT INVESTMENT & MANAGEMENT CO Stock $aiv

$aiv Overview Financials Valuation SEC Filings Company Website

2017 Q4 Form 10-K Financial Statement

#000092286418000006 Filed on March 01, 2018

Income Statement

Concept	2017 Q4	2017	2016 Q4
Revenue	$255.2M	$1.005B	$249.5M
YoY Change	2.3%	0.96%	1.47%
Cost Of Revenue	$88.80M	$354.6M	$84.20M
YoY Change	5.46%	-0.08%	-3.66%
Gross Profit	$166.4M	$650.9M	$165.3M
YoY Change	0.67%	1.56%	4.29%
Gross Profit Margin	65.2%	64.74%	66.25%
Selling, General & Admin	$11.60M	$43.70M	$11.80M
YoY Change	-1.69%	-6.62%	10.28%
% of Gross Profit	6.97%	6.71%	7.14%
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$97.40M	$366.2M	$87.70M
YoY Change	11.06%	9.94%	10.31%
% of Gross Profit	58.53%	56.26%	53.06%
Operating Expenses	$149.1M	$811.5M	$189.4M
YoY Change	-21.28%	8.33%	4.99%
Operating Profit	$17.28M	$194.0M	$60.09M
YoY Change	-71.24%	-21.4%	-8.23%
Interest Expense	-$47.10M	$194.6M	-$48.50M
YoY Change	-2.89%	-0.9%	4.3%
% of Operating Profit	-272.52%	100.33%	-80.71%
Other Income/Expense, Net	$300.9M	$7.694M	$500.0K
YoY Change	60080.0%	26.73%	-350.0%
Pretax Income	$271.1M	$316.2M	$12.10M
YoY Change	2140.5%	-31.91%	-35.29%
Income Tax	-$100.0K	-$30.84M	-$8.700M
% Of Pretax Income	-0.04%	-9.75%	-71.9%
Net Earnings	$286.2M	$315.8M	$177.4M
YoY Change	61.33%	-26.63%	135.35%
Net Earnings / Revenue	112.13%	31.41%	71.1%
Basic Earnings Per Share	$1.68	$2.02	$1.04
Diluted Earnings Per Share	$1.67	$2.02	$1.03
COMMON SHARES
Basic Shares Outstanding	157.0M shares	151.6M	156.2M shares
Diluted Shares Outstanding		152.1M	156.5M shares

Balance Sheet

Concept	2017 Q4	2017	2016 Q4
SHORT-TERM ASSETS
Cash & Short-Term Investments	$77.00M	$77.00M	$61.00M
YoY Change	26.23%	26.23%	19.61%
Cash & Equivalents	$76.79M	$77.00M	$61.24M
Short-Term Investments
Other Short-Term Assets		$37.00M
YoY Change		0.0%
Inventory	$18.00M	$18.00M
Prepaid Expenses
Receivables		$11.00M
Other Receivables		$0.00
Total Short-Term Assets	$95.00M	$143.0M	$61.00M
YoY Change	55.74%	28.83%	12.96%
LONG-TERM ASSETS
Property, Plant & Equipment	$5.630B	$5.630B	$5.755B
YoY Change	-2.17%	-2.17%	4.09%
Goodwill	$37.80M		$37.80M
YoY Change	0.0%		-13.9%
Intangibles
YoY Change
Long-Term Investments		$83.00M	$14.98M
YoY Change		9.21%	-2.71%
Other Assets	$66.00M	$136.0M	$70.00M
YoY Change	-5.71%	-17.07%	-19.54%
Total Long-Term Assets	$5.984B	$5.936B	$6.172B
YoY Change	-3.04%	-3.04%	1.77%
TOTAL ASSETS
Total Short-Term Assets	$95.00M	$143.0M	$61.00M
Total Long-Term Assets	$5.984B	$5.936B	$6.172B
Total Assets	$6.079B	$6.079B	$6.233B
YoY Change	-2.47%	-2.47%	1.87%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable
YoY Change
Accrued Expenses	$220.0M	$220.0M	$282.0M
YoY Change	-21.99%	-21.99%	-11.04%
Deferred Revenue
YoY Change
Short-Term Debt	$250.0M	$250.0M	$0.00
YoY Change
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities	$470.0M	$470.0M	$282.0M
YoY Change	66.67%	66.67%	-20.11%
LONG-TERM LIABILITIES
Long-Term Debt	$3.839B	$3.839B	$3.885B
YoY Change	-1.18%	-1.18%	0.94%
Other Long-Term Liabilities	$12.00M	$12.00M	$18.00M
YoY Change	-33.33%	-33.33%	-71.88%
Total Long-Term Liabilities	$3.851B	$3.851B	$3.903B
YoY Change	-1.33%	-1.33%	-0.26%
TOTAL LIABILITIES
Total Short-Term Liabilities	$470.0M	$470.0M	$282.0M
Total Long-Term Liabilities	$3.851B	$3.851B	$3.903B
Total Liabilities	$4.322B	$4.416B	$4.185B
YoY Change	3.28%	-0.52%	-1.93%
SHAREHOLDERS EQUITY
Retained Earnings
YoY Change
Common Stock	$1.572M		$1.569M
YoY Change	0.19%		0.38%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$1.663B	$1.663B	$1.794B
YoY Change
Total Liabilities & Shareholders Equity	$6.079B	$6.079B	$6.233B
YoY Change	-2.47%	-2.47%	1.87%

Cashflow Statement

Concept	2017 Q4	2017	2016 Q4
OPERATING ACTIVITIES
Net Income	$286.2M	$315.8M	$177.4M
YoY Change	61.33%	-26.63%	135.35%
Depreciation, Depletion And Amortization	$97.40M	$366.2M	$87.70M
YoY Change	11.06%	9.94%	10.31%
Cash From Operating Activities	$97.00M	$392.1M	$101.2M
YoY Change	-4.15%	4.14%	-0.3%
INVESTING ACTIVITIES
Capital Expenditures	-$101.7M	-$387.4M	-$91.20M
YoY Change	11.51%	-39.93%	-23.3%
Acquisitions
YoY Change
Other Investing Activities	$390.6M	$2.019M	$227.6M
YoY Change	71.62%	-120.51%	39.03%
Cash From Investing Activities	$288.9M	$13.02M	$136.5M
YoY Change	111.65%	-113.13%	204.69%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net		$0.00
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	-376.9M	-393.7M	-224.4M
YoY Change	67.96%	38.65%	59.49%
NET CHANGE
Cash From Operating Activities	97.00M	392.1M	101.2M
Cash From Investing Activities	288.9M	13.02M	136.5M
Cash From Financing Activities	-376.9M	-393.7M	-224.4M
Net Change In Cash	9.000M	11.39M	13.30M
YoY Change	-32.33%	-272.72%	137.5%
FREE CASH FLOW
Cash From Operating Activities	$97.00M	$392.1M	$101.2M
Capital Expenditures	-$101.7M	-$387.4M	-$91.20M
Free Cash Flow	$198.7M	$779.5M	$192.4M
YoY Change	3.27%	-23.69%	-12.7%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2017Q4	us-gaap	Below Market Lease Net BelowMarketLeaseNet	9100000	USD
CY2015	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	43725000	USD
CY2015	aiv	Capital Gains Dividends Declared Percentage CapitalGainsDividendsDeclaredPercentage	0.313
CY2016	aiv	Capital Gains Dividends Declared Percentage CapitalGainsDividendsDeclaredPercentage	0.354
CY2017	aiv	Capital Gains Dividends Declared Percentage CapitalGainsDividendsDeclaredPercentage	0.357
CY2015	aiv	Capital Gains Dividends Per Share Declared CapitalGainsDividendsPerShareDeclared	0.37
CY2016	aiv	Capital Gains Dividends Per Share Declared CapitalGainsDividendsPerShareDeclared	0.47
CY2017	aiv	Capital Gains Dividends Per Share Declared CapitalGainsDividendsPerShareDeclared	0.51
CY2015	aiv	Common Stock Dividends Declared Percentage CommonStockDividendsDeclaredPercentage	1
CY2016	aiv	Common Stock Dividends Declared Percentage CommonStockDividendsDeclaredPercentage	1
CY2017	aiv	Common Stock Dividends Declared Percentage CommonStockDividendsDeclaredPercentage	1
CY2017	aiv	Compliance Period Related To Low Income Housing Tax Credit Arrangements Syndication Period CompliancePeriodRelatedToLowIncomeHousingTaxCreditArrangementsSyndicationPeriod	P15Y
CY2015	aiv	Consolidated Income Loss Subject To Tax ConsolidatedIncomeLossSubjectToTax	-31300000	USD
CY2016	aiv	Consolidated Income Loss Subject To Tax ConsolidatedIncomeLossSubjectToTax	109300000	USD
CY2017	aiv	Consolidated Income Loss Subject To Tax ConsolidatedIncomeLossSubjectToTax	-55600000	USD
CY2017Q4	aiv	Deferred Tax Asset Partnership Differences DeferredTaxAssetPartnershipDifferences	4400000	USD
CY2016Q4	aiv	Deferred Tax Liabilities Partnership Differences DeferredTaxLiabilitiesPartnershipDifferences	72726000	USD
CY2017Q4	aiv	Deferred Tax Liabilities Partnership Differences DeferredTaxLiabilitiesPartnershipDifferences	32032000	USD
CY2015	aiv	Dividends Sharebased Compensation Accrued DividendsSharebasedCompensationAccrued	309000	USD
CY2016	aiv	Dividends Sharebased Compensation Accrued DividendsSharebasedCompensationAccrued	927000	USD
CY2017	aiv	Dividends Sharebased Compensation Accrued DividendsSharebasedCompensationAccrued	1720000	USD
CY2017	aiv	Economic Interestin Low Income Housing Tax Credit Partnerships EconomicInterestinLowIncomeHousingTaxCreditPartnerships	approximately 100%
CY2015	aiv	Effect Of Changes In Ownership For Consolidated Entities EffectOfChangesInOwnershipForConsolidatedEntities	1819000	USD
CY2016	aiv	Effect Of Changes In Ownership For Consolidated Entities EffectOfChangesInOwnershipForConsolidatedEntities	16064000	USD
CY2017	aiv	Effect Of Changes In Ownership For Consolidated Entities EffectOfChangesInOwnershipForConsolidatedEntities	312775000	USD
CY2015	aiv	Effective Income Tax Rate Continuing And Discontinued Operations EffectiveIncomeTaxRateContinuingAndDiscontinuedOperations	0.824
CY2016	aiv	Effective Income Tax Rate Continuing And Discontinued Operations EffectiveIncomeTaxRateContinuingAndDiscontinuedOperations	-0.172
CY2017	aiv	Effective Income Tax Rate Continuing And Discontinued Operations EffectiveIncomeTaxRateContinuingAndDiscontinuedOperations	0.555
CY2015	aiv	Effective Income Tax Rate Reconciliation Effect Of Intercompany Transfers Of Assets EffectiveIncomeTaxRateReconciliationEffectOfIntercompanyTransfersOfAssets	-0.048
CY2016	aiv	Effective Income Tax Rate Reconciliation Effect Of Intercompany Transfers Of Assets EffectiveIncomeTaxRateReconciliationEffectOfIntercompanyTransfersOfAssets	0.433
CY2017	aiv	Effective Income Tax Rate Reconciliation Effect Of Intercompany Transfers Of Assets EffectiveIncomeTaxRateReconciliationEffectOfIntercompanyTransfersOfAssets	0.000
CY2015	aiv	Effective Income Tax Rate Reconciliation Recognitionof Deferred Tax Asset Relatedto Partnership Basis Difference Amount EffectiveIncomeTaxRateReconciliationRecognitionofDeferredTaxAssetRelatedtoPartnershipBasisDifferenceAmount	0	USD
CY2016	aiv	Effective Income Tax Rate Reconciliation Recognitionof Deferred Tax Asset Relatedto Partnership Basis Difference Amount EffectiveIncomeTaxRateReconciliationRecognitionofDeferredTaxAssetRelatedtoPartnershipBasisDifferenceAmount	0	USD
CY2017	aiv	Effective Income Tax Rate Reconciliation Recognitionof Deferred Tax Asset Relatedto Partnership Basis Difference Amount EffectiveIncomeTaxRateReconciliationRecognitionofDeferredTaxAssetRelatedtoPartnershipBasisDifferenceAmount	-3501000	USD
CY2015	aiv	Effective Income Tax Rate Reconciliation Recognitionof Deferred Tax Asset Relatedto Partnership Basis Difference Percent EffectiveIncomeTaxRateReconciliationRecognitionofDeferredTaxAssetRelatedtoPartnershipBasisDifferencePercent	0.000
CY2016	aiv	Effective Income Tax Rate Reconciliation Recognitionof Deferred Tax Asset Relatedto Partnership Basis Difference Percent EffectiveIncomeTaxRateReconciliationRecognitionofDeferredTaxAssetRelatedtoPartnershipBasisDifferencePercent	0.000
CY2017	aiv	Effective Income Tax Rate Reconciliation Recognitionof Deferred Tax Asset Relatedto Partnership Basis Difference Percent EffectiveIncomeTaxRateReconciliationRecognitionofDeferredTaxAssetRelatedtoPartnershipBasisDifferencePercent	0.063
CY2015	aiv	Effective Income Tax Rate Reconciliation Tax Cutsand Jobs Actof2017 Amount EffectiveIncomeTaxRateReconciliationTaxCutsandJobsActof2017Amount	0	USD
CY2016	aiv	Effective Income Tax Rate Reconciliation Tax Cutsand Jobs Actof2017 Amount EffectiveIncomeTaxRateReconciliationTaxCutsandJobsActof2017Amount	0	USD
CY2017	aiv	Effective Income Tax Rate Reconciliation Tax Cutsand Jobs Actof2017 Amount EffectiveIncomeTaxRateReconciliationTaxCutsandJobsActof2017Amount	-15894000	USD
CY2015	aiv	Effective Income Tax Rate Reconciliation Tax Cutsand Jobs Actof2017 Percent EffectiveIncomeTaxRateReconciliationTaxCutsandJobsActof2017Percent	0.000
CY2016	aiv	Effective Income Tax Rate Reconciliation Tax Cutsand Jobs Actof2017 Percent EffectiveIncomeTaxRateReconciliationTaxCutsandJobsActof2017Percent	0.000
CY2017	aiv	Effective Income Tax Rate Reconciliation Tax Cutsand Jobs Actof2017 Percent EffectiveIncomeTaxRateReconciliationTaxCutsandJobsActof2017Percent	0.286
CY2017Q2	aiv	Environmental Remediation Numberof Potentially Responsible Parties EnvironmentalRemediationNumberofPotentiallyResponsibleParties	4	parties
CY2015	aiv	Income Tax Expense Benefits IncomeTaxExpenseBenefits	-25767000	USD
CY2016	aiv	Income Tax Expense Benefits IncomeTaxExpenseBenefits	-18842000	USD
CY2017	aiv	Income Tax Expense Benefits IncomeTaxExpenseBenefits	-30836000	USD
CY2015	aiv	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance Continuingand Discontinued Operations IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowanceContinuingandDiscontinuedOperations	666000	USD
CY2016	aiv	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance Continuingand Discontinued Operations IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowanceContinuingandDiscontinuedOperations	0	USD
CY2017	aiv	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance Continuingand Discontinued Operations IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowanceContinuingandDiscontinuedOperations	21023000	USD
CY2015	aiv	Income Tax Reconciliation Effect Of Intercompany Transfers Of Assets IncomeTaxReconciliationEffectOfIntercompanyTransfersOfAssets	1515000	USD
CY2016	aiv	Income Tax Reconciliation Effect Of Intercompany Transfers Of Assets IncomeTaxReconciliationEffectOfIntercompanyTransfersOfAssets	47369000	USD
CY2017	aiv	Income Tax Reconciliation Effect Of Intercompany Transfers Of Assets IncomeTaxReconciliationEffectOfIntercompanyTransfersOfAssets	0	USD
CY2015	aiv	Income Tax Reconciliation Income Tax Expense Benefit Continuingand Discontinued Operations At Federal Statutory Income Tax Rate Amount IncomeTaxReconciliationIncomeTaxExpenseBenefitContinuingandDiscontinuedOperationsAtFederalStatutoryIncomeTaxRateAmount	-10947000	USD
CY2016	aiv	Income Tax Reconciliation Income Tax Expense Benefit Continuingand Discontinued Operations At Federal Statutory Income Tax Rate Amount IncomeTaxReconciliationIncomeTaxExpenseBenefitContinuingandDiscontinuedOperationsAtFederalStatutoryIncomeTaxRateAmount	38257000	USD
CY2017	aiv	Income Tax Reconciliation Income Tax Expense Benefit Continuingand Discontinued Operations At Federal Statutory Income Tax Rate Amount IncomeTaxReconciliationIncomeTaxExpenseBenefitContinuingandDiscontinuedOperationsAtFederalStatutoryIncomeTaxRateAmount	-19459000	USD
CY2015	aiv	Income Tax Reconciliation State And Local Income Taxes Continuing And Discontinued Operations IncomeTaxReconciliationStateAndLocalIncomeTaxesContinuingAndDiscontinuedOperations	-361000	USD
CY2016	aiv	Income Tax Reconciliation State And Local Income Taxes Continuing And Discontinued Operations IncomeTaxReconciliationStateAndLocalIncomeTaxesContinuingAndDiscontinuedOperations	7152000	USD
CY2017	aiv	Income Tax Reconciliation State And Local Income Taxes Continuing And Discontinued Operations IncomeTaxReconciliationStateAndLocalIncomeTaxesContinuingAndDiscontinuedOperations	-1769000	USD
CY2015	aiv	Incometaxexpenseattributablefromgainsonsalesofrealestate Incometaxexpenseattributablefromgainsonsalesofrealestate	1757000	USD
CY2016	aiv	Incometaxexpenseattributablefromgainsonsalesofrealestate Incometaxexpenseattributablefromgainsonsalesofrealestate	6366000	USD
CY2017	aiv	Incometaxexpenseattributablefromgainsonsalesofrealestate Incometaxexpenseattributablefromgainsonsalesofrealestate	1290000	USD
CY2015	aiv	Net Income Loss Including Portion Attributable To Noncontrolling Interests Included In Permanent Equity Excluding Portion Attributable To Noncontrolling Interests Included In Temporary Equity NetIncomeLossIncludingPortionAttributableToNoncontrollingInterestsIncludedInPermanentEquityExcludingPortionAttributableToNoncontrollingInterestsIncludedInTemporaryEquity	265040000	USD
CY2016	aiv	Net Income Loss Including Portion Attributable To Noncontrolling Interests Included In Permanent Equity Excluding Portion Attributable To Noncontrolling Interests Included In Temporary Equity NetIncomeLossIncludingPortionAttributableToNoncontrollingInterestsIncludedInPermanentEquityExcludingPortionAttributableToNoncontrollingInterestsIncludedInTemporaryEquity	476034000	USD
CY2017	aiv	Net Income Loss Including Portion Attributable To Noncontrolling Interests Included In Permanent Equity Excluding Portion Attributable To Noncontrolling Interests Included In Temporary Equity NetIncomeLossIncludingPortionAttributableToNoncontrollingInterestsIncludedInPermanentEquityExcludingPortionAttributableToNoncontrollingInterestsIncludedInTemporaryEquity	339315000	USD
CY2015	aiv	Noncontrolling Interest Weighted Average Ownership Percentage By Noncontrolling Owners During Period NoncontrollingInterestWeightedAverageOwnershipPercentageByNoncontrollingOwnersDuringPeriod	0.047
CY2016	aiv	Noncontrolling Interest Weighted Average Ownership Percentage By Noncontrolling Owners During Period NoncontrollingInterestWeightedAverageOwnershipPercentageByNoncontrollingOwnersDuringPeriod	0.047
CY2017	aiv	Noncontrolling Interest Weighted Average Ownership Percentage By Noncontrolling Owners During Period NoncontrollingInterestWeightedAverageOwnershipPercentageByNoncontrollingOwnersDuringPeriod	0.045
CY2015Q4	aiv	Nonvested Restricted Shares Of Common Stock With Non Forfeitable Dividend Rights NonvestedRestrictedSharesOfCommonStockWithNonForfeitableDividendRights	300000	shares
CY2016Q4	aiv	Nonvested Restricted Shares Of Common Stock With Non Forfeitable Dividend Rights NonvestedRestrictedSharesOfCommonStockWithNonForfeitableDividendRights	200000	shares
CY2017Q4	aiv	Nonvested Restricted Shares Of Common Stock With Non Forfeitable Dividend Rights NonvestedRestrictedSharesOfCommonStockWithNonForfeitableDividendRights	200000	shares
CY2017Q4	aiv	Numberof Sharesof Common Stock Requiredto Redeem Preferred Op Units Tenderedfor Redemptionif Parent Choosesto Redeemin Shares Ratherthan Cash NumberofSharesofCommonStockRequiredtoRedeemPreferredOPUnitsTenderedforRedemptionifParentChoosestoRedeeminSharesRatherthanCash	2300000	shares
CY2015	aiv	Operating Partnership Units Issuedin Exchangefor Acquisitionsof Real Estate OperatingPartnershipUnitsIssuedinExchangeforAcquisitionsofRealEstate	0	USD
CY2016	aiv	Operating Partnership Units Issuedin Exchangefor Acquisitionsof Real Estate OperatingPartnershipUnitsIssuedinExchangeforAcquisitionsofRealEstate	17000000	USD
CY2017	aiv	Operating Partnership Units Issuedin Exchangefor Acquisitionsof Real Estate OperatingPartnershipUnitsIssuedinExchangeforAcquisitionsofRealEstate	0	USD
CY2015	aiv	Ordinary Income Dividends Declared Percentage OrdinaryIncomeDividendsDeclaredPercentage	0.302
CY2016	aiv	Ordinary Income Dividends Declared Percentage OrdinaryIncomeDividendsDeclaredPercentage	0.342
CY2017	aiv	Ordinary Income Dividends Declared Percentage OrdinaryIncomeDividendsDeclaredPercentage	0.515
CY2015	aiv	Ordinary Income Dividends Per Share Declared OrdinaryIncomeDividendsPerShareDeclared	0.36
CY2016	aiv	Ordinary Income Dividends Per Share Declared OrdinaryIncomeDividendsPerShareDeclared	0.45
CY2017	aiv	Ordinary Income Dividends Per Share Declared OrdinaryIncomeDividendsPerShareDeclared	0.75
CY2015	aiv	Other Comprehensive Income Loss OtherComprehensiveIncomeLoss	593000	USD
CY2016	aiv	Other Comprehensive Income Loss OtherComprehensiveIncomeLoss	7662000	USD
CY2017	aiv	Other Comprehensive Income Loss OtherComprehensiveIncomeLoss	2814000	USD
CY2015	aiv	Other Direct And Indirect Costs Capitalized OtherDirectAndIndirectCostsCapitalized	28200000	USD
CY2016	aiv	Other Direct And Indirect Costs Capitalized OtherDirectAndIndirectCostsCapitalized	32900000	USD
CY2017	aiv	Other Direct And Indirect Costs Capitalized OtherDirectAndIndirectCostsCapitalized	36000000	USD
CY2015	aiv	Other Items Included In Continuing Operations OtherItemsIncludedInContinuingOperations	164825000	USD
CY2016	aiv	Other Items Included In Continuing Operations OtherItemsIncludedInContinuingOperations	157313000	USD
CY2017	aiv	Other Items Included In Continuing Operations OtherItemsIncludedInContinuingOperations	146463000	USD
CY2015	aiv	Other Operating Expenses Not Allocatedto Reportable Segment OtherOperatingExpensesNotAllocatedtoReportableSegment	362979000	USD
CY2016	aiv	Other Operating Expenses Not Allocatedto Reportable Segment OtherOperatingExpensesNotAllocatedtoReportableSegment	394145000	USD
CY2017	aiv	Other Operating Expenses Not Allocatedto Reportable Segment OtherOperatingExpensesNotAllocatedtoReportableSegment	457075000	USD
CY2017	aiv	Partners Capital Account Units Conversion Ratio PartnersCapitalAccountUnitsConversionRatio	1
CY2017Q4	aiv	Percentage Of Income Tax On Income From Non Arms Length Transactions PercentageOfIncomeTaxOnIncomeFromNonArmsLengthTransactions	1
CY2017	aiv	Period Of Time Over Which Low Income Housing Tax Credits Realized By Investors PeriodOfTimeOverWhichLowIncomeHousingTaxCreditsRealizedByInvestors	P10Y
CY2015	aiv	Qualified Dividends Declared Percentage QualifiedDividendsDeclaredPercentage	0.145
CY2016	aiv	Qualified Dividends Declared Percentage QualifiedDividendsDeclaredPercentage	0.099
CY2017	aiv	Qualified Dividends Declared Percentage QualifiedDividendsDeclaredPercentage	0.016
CY2015	aiv	Qualified Dividends Per Share Declared QualifiedDividendsPerShareDeclared	0.17
CY2016	aiv	Qualified Dividends Per Share Declared QualifiedDividendsPerShareDeclared	0.13
CY2017	aiv	Qualified Dividends Per Share Declared QualifiedDividendsPerShareDeclared	0.02
CY2015	aiv	Redemption Of Operating Partnership Units In Exchange For Cash Or Shares Of Common Stock RedemptionOfOperatingPartnershipUnitsInExchangeForCashOrSharesOfCommonStock	4181000	USD
CY2016	aiv	Redemption Of Operating Partnership Units In Exchange For Cash Or Shares Of Common Stock RedemptionOfOperatingPartnershipUnitsInExchangeForCashOrSharesOfCommonStock	10819000	USD
CY2017	aiv	Redemption Of Operating Partnership Units In Exchange For Cash Or Shares Of Common Stock RedemptionOfOperatingPartnershipUnitsInExchangeForCashOrSharesOfCommonStock	11882000	USD
CY2015	aiv	Tax Credit And Asset Management Revenues TaxCreditAndAssetManagementRevenues	24356000	USD
CY2016	aiv	Tax Credit And Asset Management Revenues TaxCreditAndAssetManagementRevenues	21323000	USD
CY2017	aiv	Tax Credit And Asset Management Revenues TaxCreditAndAssetManagementRevenues	13243000	USD
CY2017	aiv	Tax Cutsand Jobs Actof2017 Incomplete Accounting Provisional Income Tax Expense Benefit TaxCutsandJobsActof2017IncompleteAccountingProvisionalIncomeTaxExpenseBenefit	-15900000	USD
CY2017	aiv	Tax Cutsand Jobs Actof2017 Reclassificationof Alternative Minimum Tax Credits TaxCutsandJobsActof2017ReclassificationofAlternativeMinimumTaxCredits	2700000	USD
CY2015	aiv	Total Current Federal Tax Expense Benefit TotalCurrentFederalTaxExpenseBenefit	1310000	USD
CY2016	aiv	Total Current Federal Tax Expense Benefit TotalCurrentFederalTaxExpenseBenefit	5038000	USD
CY2017	aiv	Total Current Federal Tax Expense Benefit TotalCurrentFederalTaxExpenseBenefit	-938000	USD
CY2015	aiv	Total Current Income Tax Expense Benefit TotalCurrentIncomeTaxExpenseBenefit	2667000	USD
CY2016	aiv	Total Current Income Tax Expense Benefit TotalCurrentIncomeTaxExpenseBenefit	7954000	USD
CY2017	aiv	Total Current Income Tax Expense Benefit TotalCurrentIncomeTaxExpenseBenefit	-413000	USD
CY2015	aiv	Total Current Stateand Local Tax Expense Benefit TotalCurrentStateandLocalTaxExpenseBenefit	1357000	USD
CY2016	aiv	Total Current Stateand Local Tax Expense Benefit TotalCurrentStateandLocalTaxExpenseBenefit	2916000	USD
CY2017	aiv	Total Current Stateand Local Tax Expense Benefit TotalCurrentStateandLocalTaxExpenseBenefit	525000	USD
CY2015	aiv	Total Deferred Federal Income Tax Expense Benefit TotalDeferredFederalIncomeTaxExpenseBenefit	-27382000	USD
CY2016	aiv	Total Deferred Federal Income Tax Expense Benefit TotalDeferredFederalIncomeTaxExpenseBenefit	-26173000	USD
CY2017	aiv	Total Deferred Federal Income Tax Expense Benefit TotalDeferredFederalIncomeTaxExpenseBenefit	-10908000	USD
CY2015	aiv	Total Deferred Income Tax Expense Benefit TotalDeferredIncomeTaxExpenseBenefit	-28434000	USD
CY2016	aiv	Total Deferred Income Tax Expense Benefit TotalDeferredIncomeTaxExpenseBenefit	-26796000	USD
CY2017	aiv	Total Deferred Income Tax Expense Benefit TotalDeferredIncomeTaxExpenseBenefit	-30423000	USD
CY2015	aiv	Total Deferred Stateand Local Income Tax Expense Benefit TotalDeferredStateandLocalIncomeTaxExpenseBenefit	-1052000	USD
CY2016	aiv	Total Deferred Stateand Local Income Tax Expense Benefit TotalDeferredStateandLocalIncomeTaxExpenseBenefit	-623000	USD
CY2017	aiv	Total Deferred Stateand Local Income Tax Expense Benefit TotalDeferredStateandLocalIncomeTaxExpenseBenefit	-3621000	USD
CY2015	aiv	Unrecaptured Gain Dividends Declared Percentage UnrecapturedGainDividendsDeclaredPercentage	0.240
CY2016	aiv	Unrecaptured Gain Dividends Declared Percentage UnrecapturedGainDividendsDeclaredPercentage	0.205
CY2017	aiv	Unrecaptured Gain Dividends Declared Percentage UnrecapturedGainDividendsDeclaredPercentage	0.112
CY2015	aiv	Unrecaptured Gain Dividends Per Share Declared UnrecapturedGainDividendsPerShareDeclared	0.28
CY2016	aiv	Unrecaptured Gain Dividends Per Share Declared UnrecapturedGainDividendsPerShareDeclared	0.27
CY2017	aiv	Unrecaptured Gain Dividends Per Share Declared UnrecapturedGainDividendsPerShareDeclared	0.16
CY2015	aiv	Unrecognized Tax Benefits Increase Decrease Resultingfrom Prior Periodand Current Year Tax Positions UnrecognizedTaxBenefitsIncreaseDecreaseResultingfromPriorPeriodandCurrentYearTaxPositions	611000	USD
CY2016	aiv	Unrecognized Tax Benefits Increase Decrease Resultingfrom Prior Periodand Current Year Tax Positions UnrecognizedTaxBenefitsIncreaseDecreaseResultingfromPriorPeriodandCurrentYearTaxPositions	-611000	USD
CY2017	aiv	Unrecognized Tax Benefits Increase Decrease Resultingfrom Prior Periodand Current Year Tax Positions UnrecognizedTaxBenefitsIncreaseDecreaseResultingfromPriorPeriodandCurrentYearTaxPositions	190000	USD
CY2017	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	9251000	USD
CY2015	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	7200000	USD
CY2016	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	8600000	USD
CY2017	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	9300000	USD
CY2015	us-gaap	Amortization Of Below Market Lease AmortizationOfBelowMarketLease	1700000	USD
CY2016	us-gaap	Amortization Of Below Market Lease AmortizationOfBelowMarketLease	1700000	USD
CY2017	us-gaap	Amortization Of Below Market Lease AmortizationOfBelowMarketLease	1300000	USD
CY2015	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	5186000	USD
CY2016	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	5060000	USD
CY2017	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	5666000	USD
CY2016Q4	us-gaap	Assets Assets	6232818000	USD
CY2017Q4	us-gaap	Assets Assets	6079040000	USD
CY2016Q4	us-gaap	Below Market Lease Accumulated Amortization BelowMarketLeaseAccumulatedAmortization	33100000	USD
CY2017	dei	Amendment Flag AmendmentFlag	false
CY2017	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2017	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2017	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2017
CY2017	dei	Document Period End Date DocumentPeriodEndDate	2017-12-31
CY2017	dei	Document Type DocumentType	10-K
CY2017	dei	Entity Central Index Key EntityCentralIndexKey	0000922864
CY2018Q1	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	157330262	shares
CY2017	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2017	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
CY2017Q2	dei	Entity Public Float EntityPublicFloat	6700000000	USD
CY2017	dei	Entity Registrant Name EntityRegistrantName	APARTMENT INVESTMENT & MANAGEMENT CO
CY2017	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2017	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	Yes
CY2016Q4	us-gaap	Accumulated Distributions In Excess Of Net Income AccumulatedDistributionsInExcessOfNetIncome	2385399000	USD
CY2017Q4	us-gaap	Accumulated Distributions In Excess Of Net Income AccumulatedDistributionsInExcessOfNetIncome	2367073000	USD
CY2016Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	1011000	USD
CY2017Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	3603000	USD
CY2016Q4	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	4051722000	USD
CY2017Q4	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	3900042000	USD
CY2015	us-gaap	Adjustments Noncash Items To Reconcile Net Income Loss To Cash Provided By Used In Operating Activities AdjustmentsNoncashItemsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivities	87908000	USD
CY2016	us-gaap	Adjustments Noncash Items To Reconcile Net Income Loss To Cash Provided By Used In Operating Activities AdjustmentsNoncashItemsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivities	-105549000	USD
CY2017	us-gaap	Adjustments Noncash Items To Reconcile Net Income Loss To Cash Provided By Used In Operating Activities AdjustmentsNoncashItemsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivities	47060000	USD
CY2015	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	7096000	USD
CY2016	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	8610000	USD
CY2017Q4	us-gaap	Below Market Lease Accumulated Amortization BelowMarketLeaseAccumulatedAmortization	34400000	USD
CY2017Q4	us-gaap	Below Market Lease Amortization Income Next Twelve Months BelowMarketLeaseAmortizationIncomeNextTwelveMonths	1128000	USD
CY2017Q4	us-gaap	Below Market Lease Amortization Income Year Five BelowMarketLeaseAmortizationIncomeYearFive	763000	USD
CY2017Q4	us-gaap	Below Market Lease Amortization Income Year Four BelowMarketLeaseAmortizationIncomeYearFour	811000	USD
CY2017Q4	us-gaap	Below Market Lease Amortization Income Year Three BelowMarketLeaseAmortizationIncomeYearThree	886000	USD
CY2017Q4	us-gaap	Below Market Lease Amortization Income Year Two BelowMarketLeaseAmortizationIncomeYearTwo	998000	USD
CY2016Q4	us-gaap	Below Market Lease Net BelowMarketLeaseNet	10400000	USD
CY2016	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	35594000	USD
CY2017	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	31719000	USD
CY2015	us-gaap	Capitalized Computer Software Additions CapitalizedComputerSoftwareAdditions	3600000	USD
CY2016	us-gaap	Capitalized Computer Software Additions CapitalizedComputerSoftwareAdditions	3400000	USD
CY2017	us-gaap	Capitalized Computer Software Additions CapitalizedComputerSoftwareAdditions	2000000	USD
CY2015	us-gaap	Capitalized Computer Software Amortization1 CapitalizedComputerSoftwareAmortization1	6900000	USD
CY2016	us-gaap	Capitalized Computer Software Amortization1 CapitalizedComputerSoftwareAmortization1	7200000	USD
CY2017	us-gaap	Capitalized Computer Software Amortization1 CapitalizedComputerSoftwareAmortization1	5500000	USD
CY2016Q4	us-gaap	Capitalized Computer Software Net CapitalizedComputerSoftwareNet	12600000	USD
CY2017Q4	us-gaap	Capitalized Computer Software Net CapitalizedComputerSoftwareNet	9100000	USD
CY2014Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	28971000	USD
CY2015Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	50789000	USD
CY2016Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	61244000	USD
CY2017Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	76786000	USD
CY2015	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	21818000	USD
CY2016	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	10455000	USD
CY2017	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	15542000	USD
CY2016Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2017Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2015	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	1.18
CY2016	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	1.32
CY2017	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	1.44
CY2016Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2017Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2016Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	500787260	shares
CY2017Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	500787260	shares
CY2016Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	156888381	shares
CY2017Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	157189447	shares
CY2016Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	156888381	shares
CY2017Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	157189447	shares
CY2016Q4	us-gaap	Common Stock Value CommonStockValue	1569000	USD
CY2017Q4	us-gaap	Common Stock Value CommonStockValue	1572000	USD
CY2015	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	249126000	USD
CY2016	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	437461000	USD
CY2017	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	318366000	USD
CY2015	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	23450000	USD
CY2016	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	53474000	USD
CY2017	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	31527000	USD
CY2015	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	272576000	USD
CY2016	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	490935000	USD
CY2017	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	349893000	USD
CY2017Q1	us-gaap	Cumulative Effect Of New Accounting Principle In Period Of Adoption CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	65710000	USD
CY2017	us-gaap	Debt Instrument Basis Spread On Variable Rate1 DebtInstrumentBasisSpreadOnVariableRate1	0.0020
CY2016Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	82269000	USD
CY2017Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	89748000	USD
CY2016Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	5076000	USD
CY2017Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	32227000	USD
CY2016Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	8873000	USD
CY2016Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.07
CY2016Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.04
CY2016	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.68
CY2017Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.07
CY2017Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.10
CY2017Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.11
CY2017Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.68
CY2017	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.96
CY2015	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.52
CY2016Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.15
CY2016Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.41
CY2016Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.07
CY2016Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.03
CY2016	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.67
CY2017Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	9523000	USD
CY2016Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	300000	USD
CY2017Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	200000	USD
CY2016Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards DeferredTaxAssetsTaxCreditCarryforwards	65559000	USD
CY2017Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards DeferredTaxAssetsTaxCreditCarryforwards	73450000	USD
CY2016Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Accrued Liabilities DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities	7537000	USD
CY2017Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Accrued Liabilities DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities	6575000	USD
CY2016Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	4467000	USD
CY2017Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	25489000	USD
CY2015	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	306301000	USD
CY2016	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	333066000	USD
CY2017	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	366184000	USD
CY2015	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	184391000	USD
CY2016	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	206898000	USD
CY2017	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	226172000	USD
CY2015	us-gaap	Dividends Preferred Stock Cash DividendsPreferredStockCash	11099000	USD
CY2016	us-gaap	Dividends Preferred Stock Cash DividendsPreferredStockCash	10014000	USD
CY2017	us-gaap	Dividends Preferred Stock Cash DividendsPreferredStockCash	8594000	USD
CY2015	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.52
CY2016Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.15
CY2016Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.42
CY2017Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.07
CY2017Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.10
CY2017Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.11
CY2017Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.67
CY2017	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.96
CY2015	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.350
CY2016	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.350
CY2017	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.350
CY2015	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	-0.021
CY2016	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	0.000
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	-0.378
CY2015	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense EffectiveIncomeTaxRateReconciliationNondeductibleExpense	0.001
CY2016	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense EffectiveIncomeTaxRateReconciliationNondeductibleExpense	-0.001
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense EffectiveIncomeTaxRateReconciliationNondeductibleExpense	0.029
CY2015	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.012
CY2016	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.065
CY2017	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.032
CY2015	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits EffectiveIncomeTaxRateReconciliationTaxCredits	0.434
CY2016	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits EffectiveIncomeTaxRateReconciliationTaxCredits	-0.153
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits EffectiveIncomeTaxRateReconciliationTaxCredits	0.173
CY2015	us-gaap	Employee Service Share Based Compensation Allocation Of Recognized Period Costs Capitalized Amount EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount	500000	USD
CY2016	us-gaap	Employee Service Share Based Compensation Allocation Of Recognized Period Costs Capitalized Amount EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount	1000000	USD
CY2017	us-gaap	Employee Service Share Based Compensation Allocation Of Recognized Period Costs Capitalized Amount EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount	1400000	USD
CY2017Q4	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized	11800000	USD
CY2017	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Period For Recognition1 EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1	P1Y7M
CY2015	us-gaap	Gain Loss On Sale Of Properties Net Of Applicable Income Taxes GainLossOnSaleOfPropertiesNetOfApplicableIncomeTaxes	180593000	USD
CY2016	us-gaap	Gain Loss On Sale Of Properties Net Of Applicable Income Taxes GainLossOnSaleOfPropertiesNetOfApplicableIncomeTaxes	393790000	USD
CY2017	us-gaap	Gain Loss On Sale Of Properties Net Of Applicable Income Taxes GainLossOnSaleOfPropertiesNetOfApplicableIncomeTaxes	299559000	USD
CY2015	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	46310000	USD
CY2016	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	46784000	USD
CY2017	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	43657000	USD
CY2016Q4	us-gaap	Goodwill Goodwill	37800000	USD
CY2017Q4	us-gaap	Goodwill Goodwill	37800000	USD
CY2015	us-gaap	Goodwill Written Off Related To Sale Of Business Unit GoodwillWrittenOffRelatedToSaleOfBusinessUnit	1200000	USD
CY2016	us-gaap	Goodwill Written Off Related To Sale Of Business Unit GoodwillWrittenOffRelatedToSaleOfBusinessUnit	4500000	USD
CY2015	us-gaap	Impairment Of Real Estate ImpairmentOfRealEstate	0	USD
CY2016	us-gaap	Impairment Of Real Estate ImpairmentOfRealEstate	0	USD
CY2017	us-gaap	Impairment Of Real Estate ImpairmentOfRealEstate	35881000	USD
CY2015	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	63866000	USD
CY2016	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	64275000	USD
CY2017	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	15394000	USD
CY2015	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	91390000	USD
CY2016	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	89483000	USD
CY2017	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	47520000	USD
CY2015	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-27524000	USD
CY2016	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-25208000	USD
CY2017	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-32126000	USD
CY2015	us-gaap	Income Tax Reconciliation Change In Enacted Tax Rate IncomeTaxReconciliationChangeInEnactedTaxRate	0	USD
CY2016	us-gaap	Income Tax Reconciliation Change In Enacted Tax Rate IncomeTaxReconciliationChangeInEnactedTaxRate	0	USD
CY2017	us-gaap	Income Tax Reconciliation Change In Enacted Tax Rate IncomeTaxReconciliationChangeInEnactedTaxRate	-15894000	USD
CY2015	us-gaap	Income Tax Reconciliation Nondeductible Expense IncomeTaxReconciliationNondeductibleExpense	-27000	USD
CY2016	us-gaap	Income Tax Reconciliation Nondeductible Expense IncomeTaxReconciliationNondeductibleExpense	-132000	USD
CY2017	us-gaap	Income Tax Reconciliation Nondeductible Expense IncomeTaxReconciliationNondeductibleExpense	-1629000	USD
CY2015	us-gaap	Income Tax Reconciliation Tax Credits IncomeTaxReconciliationTaxCredits	13583000	USD
CY2016	us-gaap	Income Tax Reconciliation Tax Credits IncomeTaxReconciliationTaxCredits	16750000	USD
CY2017	us-gaap	Income Tax Reconciliation Tax Credits IncomeTaxReconciliationTaxCredits	9607000	USD
CY2015	us-gaap	Income Taxes Paid IncomeTaxesPaid	2033000	USD
CY2016	us-gaap	Income Taxes Paid IncomeTaxesPaid	2152000	USD
CY2017	us-gaap	Income Taxes Paid IncomeTaxesPaid	7401000	USD
CY2015	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	-22334000	USD
CY2016	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	-5555000	USD
CY2017	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	-15794000	USD
CY2015	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-619000	USD
CY2016	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	20680000	USD
CY2017	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	13375000	USD
CY2015	us-gaap	Increase Decrease In Restricted Cash IncreaseDecreaseInRestrictedCash	429000	USD
CY2016	us-gaap	Increase Decrease In Restricted Cash IncreaseDecreaseInRestrictedCash	-1374000	USD
CY2017	us-gaap	Increase Decrease In Restricted Cash IncreaseDecreaseInRestrictedCash	-1506000	USD
CY2015	us-gaap	Interest Costs Capitalized InterestCostsCapitalized	11700000	USD
CY2016	us-gaap	Interest Costs Capitalized InterestCostsCapitalized	9600000	USD
CY2017	us-gaap	Interest Costs Capitalized InterestCostsCapitalized	7600000	USD
CY2015	us-gaap	Interest Expense InterestExpense	199685000	USD
CY2016	us-gaap	Interest Expense InterestExpense	196389000	USD
CY2017	us-gaap	Interest Expense InterestExpense	194615000	USD
CY2015	us-gaap	Interest Paid InterestPaid	207087000	USD
CY2016	us-gaap	Interest Paid InterestPaid	200278000	USD
CY2017	us-gaap	Interest Paid InterestPaid	196438000	USD
CY2015	us-gaap	Investment Income Interest InvestmentIncomeInterest	6949000	USD
CY2016	us-gaap	Investment Income Interest InvestmentIncomeInterest	7797000	USD
CY2017	us-gaap	Investment Income Interest InvestmentIncomeInterest	8332000	USD
CY2017	us-gaap	Lessor Leasing Arrangements Operating Leases Term Of Contract LessorLeasingArrangementsOperatingLeasesTermOfContract	P12M
CY2017Q4	us-gaap	Letters Of Credit Outstanding Amount LettersOfCreditOutstandingAmount	11500000	USD
CY2016Q4	us-gaap	Liabilities Liabilities	4184651000	USD
CY2017Q4	us-gaap	Liabilities Liabilities	4321750000	USD
CY2016Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	6232818000	USD
CY2017Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	6079040000	USD
CY2017	us-gaap	Limited Liability Company Llc Or Limited Partnership Lp Managing Member Or General Partner Ownership Interest LimitedLiabilityCompanyLLCOrLimitedPartnershipLPManagingMemberOrGeneralPartnerOwnershipInterest	0.955
CY2017Q4	us-gaap	Limited Partners Capital Account Units Outstanding LimitedPartnersCapitalAccountUnitsOutstanding	157189447	shares
CY2017	us-gaap	Line Of Credit Facility Dividend Restrictions LineOfCreditFacilityDividendRestrictions	aggregate amount that does not exceed the greater of 95% of our Funds From Operations for such period, subject to certain non-cash adjustments, or such amount as may be necessary to maintain Aimco’s REIT status
CY2017	us-gaap	Line Of Credit Facility Expiration Date1 LineOfCreditFacilityExpirationDate1	2022-01-22
CY2016Q4	us-gaap	Line Of Credit Facility Interest Rate At Period End LineOfCreditFacilityInterestRateAtPeriodEnd	0.0209
CY2017Q4	us-gaap	Line Of Credit Facility Interest Rate At Period End LineOfCreditFacilityInterestRateAtPeriodEnd	0.0326
CY2017	us-gaap	Line Of Credit Facility Interest Rate Description LineOfCreditFacilityInterestRateDescription	LIBOR plus 1.20%, or, at our option, a base rate plus 0.20%
CY2017Q4	us-gaap	Line Of Credit Facility Maximum Borrowing Capacity LineOfCreditFacilityMaximumBorrowingCapacity	600000000	USD
CY2017Q4	us-gaap	Line Of Credit Facility Remaining Borrowing Capacity LineOfCreditFacilityRemainingBorrowingCapacity	521300000	USD
CY2017	us-gaap	Longterm Purchase Commitment Period LongtermPurchaseCommitmentPeriod	P12M
CY2015	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	89371000	USD
CY2016	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	35974000	USD
CY2017	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	19132000	USD
CY2016Q4	us-gaap	Minority Interest In Limited Partnerships MinorityInterestInLimitedPartnerships	151121000	USD
CY2017Q4	us-gaap	Minority Interest In Limited Partnerships MinorityInterestInLimitedPartnerships	-1716000	USD
CY2016Q4	us-gaap	Minority Interest In Operating Partnerships MinorityInterestInOperatingPartnerships	-58000	USD
CY2017Q4	us-gaap	Minority Interest In Operating Partnerships MinorityInterestInOperatingPartnerships	-5675000	USD
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CY2016	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-269496000	USD
CY2017	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-393301000	USD
CY2015	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-170897000	USD
CY2016	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-97773000	USD
CY2017	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	14704000	USD
CY2015	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	359891000	USD
CY2016	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	377724000	USD
CY2017	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	394139000	USD
CY2015	us-gaap	Net Income Loss NetIncomeLoss	248710000	USD
CY2016	us-gaap	Net Income Loss NetIncomeLoss	430410000	USD
CY2017	us-gaap	Net Income Loss NetIncomeLoss	315774000	USD
CY2015	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	23273000	USD
CY2016	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	52863000	USD
CY2017	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	31305000	USD
CY2015	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	235966000	USD
CY2016Q1	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	23223000	USD
CY2016Q2	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	221382000	USD
CY2016Q3	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	11176000	USD
CY2016Q4	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	162000000	USD
CY2016	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	417781000	USD
CY2017Q1	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	11491000	USD
CY2017Q2	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	15843000	USD
CY2017Q3	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	17430000	USD
CY2017Q4	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	262097000	USD
CY2017	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	306861000	USD
CY2015	us-gaap	Noncontrolling Interest In Net Income Loss Limited Partnerships Nonredeemable NoncontrollingInterestInNetIncomeLossLimitedPartnershipsNonredeemable	4776000	USD
CY2016	us-gaap	Noncontrolling Interest In Net Income Loss Limited Partnerships Nonredeemable NoncontrollingInterestInNetIncomeLossLimitedPartnershipsNonredeemable	25256000	USD
CY2017	us-gaap	Noncontrolling Interest In Net Income Loss Limited Partnerships Nonredeemable NoncontrollingInterestInNetIncomeLossLimitedPartnershipsNonredeemable	9084000	USD
CY2015	us-gaap	Noncontrolling Interest In Net Income Loss Operating Partnerships Nonredeemable NoncontrollingInterestInNetIncomeLossOperatingPartnershipsNonredeemable	11554000	USD
CY2016	us-gaap	Noncontrolling Interest In Net Income Loss Operating Partnerships Nonredeemable NoncontrollingInterestInNetIncomeLossOperatingPartnershipsNonredeemable	20368000	USD
CY2017	us-gaap	Noncontrolling Interest In Net Income Loss Operating Partnerships Nonredeemable NoncontrollingInterestInNetIncomeLossOperatingPartnershipsNonredeemable	14457000	USD
CY2015	us-gaap	Noncontrolling Interest In Net Income Loss Preferred Unit Holders Nonredeemable NoncontrollingInterestInNetIncomeLossPreferredUnitHoldersNonredeemable	6943000	USD
CY2016	us-gaap	Noncontrolling Interest In Net Income Loss Preferred Unit Holders Nonredeemable NoncontrollingInterestInNetIncomeLossPreferredUnitHoldersNonredeemable	7239000	USD
CY2017	us-gaap	Noncontrolling Interest In Net Income Loss Preferred Unit Holders Nonredeemable NoncontrollingInterestInNetIncomeLossPreferredUnitHoldersNonredeemable	7764000	USD
CY2017	us-gaap	Noncontrolling Interest Increase From Subsidiary Equity Issuance NoncontrollingInterestIncreaseFromSubsidiaryEquityIssuance	3401000	USD
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CY2016	us-gaap	Notes Reduction NotesReduction	0	USD
CY2017	us-gaap	Notes Reduction NotesReduction	0	USD
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CY2016	us-gaap	Operating Expenses OperatingExpenses	749058000	USD
CY2017	us-gaap	Operating Expenses OperatingExpenses	811454000	USD
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CY2016	us-gaap	Operating Income Loss OperatingIncomeLoss	246796000	USD
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CY2017	us-gaap	Operating Income Loss OperatingIncomeLoss	193983000	USD
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CY2017Q4	us-gaap	Operating Leases Future Minimum Payments Due In Four Years OperatingLeasesFutureMinimumPaymentsDueInFourYears	2382000	USD
CY2017Q4	us-gaap	Operating Leases Future Minimum Payments Due In Three Years OperatingLeasesFutureMinimumPaymentsDueInThreeYears	2477000	USD
CY2017Q4	us-gaap	Operating Leases Future Minimum Payments Due In Two Years OperatingLeasesFutureMinimumPaymentsDueInTwoYears	2329000	USD
CY2017Q4	us-gaap	Operating Leases Future Minimum Payments Due Thereafter OperatingLeasesFutureMinimumPaymentsDueThereafter	79337000	USD
CY2017Q4	us-gaap	Operating Loss Carryforwards OperatingLossCarryforwards	9500000	USD
CY2017Q4	us-gaap	Operating Loss Carryforwards Valuation Allowance OperatingLossCarryforwardsValuationAllowance	6600000	USD
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CY2016	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	5855000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	1507000	USD
CY2015	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	593000	USD
CY2016	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	7662000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	2814000	USD
CY2015	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax	-1678000	USD
CY2016	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax	-1586000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax	-1480000	USD
CY2015	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax	-1299000	USD
CY2016	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax	221000	USD
CY2017	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax	-173000	USD
CY2015	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	10368000	USD
CY2016	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	14295000	USD
CY2017	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	11353000	USD
CY2015	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	387000	USD
CY2016	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	6071000	USD
CY2017	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	7694000	USD
CY2015	us-gaap	Participating Securities Distributed And Undistributed Earnings Loss Basic ParticipatingSecuritiesDistributedAndUndistributedEarningsLossBasic	950000	USD
CY2016	us-gaap	Participating Securities Distributed And Undistributed Earnings Loss Basic ParticipatingSecuritiesDistributedAndUndistributedEarningsLossBasic	635000	USD
CY2017	us-gaap	Participating Securities Distributed And Undistributed Earnings Loss Basic ParticipatingSecuritiesDistributedAndUndistributedEarningsLossBasic	319000	USD
CY2015	us-gaap	Payments For Capital Improvements PaymentsForCapitalImprovements	367180000	USD
CY2016	us-gaap	Payments For Capital Improvements PaymentsForCapitalImprovements	346645000	USD
CY2017	us-gaap	Payments For Capital Improvements PaymentsForCapitalImprovements	358104000	USD
CY2015	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	-5253000	USD
CY2016	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	-10254000	USD
CY2017	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	1589000	USD
CY2015	us-gaap	Payments For Repurchase Of Preferred Stock And Preference Stock PaymentsForRepurchaseOfPreferredStockAndPreferenceStock	27000000	USD
CY2016	us-gaap	Payments For Repurchase Of Preferred Stock And Preference Stock PaymentsForRepurchaseOfPreferredStockAndPreferenceStock	34799000	USD
CY2017	us-gaap	Payments For Repurchase Of Preferred Stock And Preference Stock PaymentsForRepurchaseOfPreferredStockAndPreferenceStock	0	USD
CY2015	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	184082000	USD
CY2016	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	206279000	USD
CY2017	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	225377000	USD
CY2015	us-gaap	Payments Of Dividends Minority Interest PaymentsOfDividendsMinorityInterest	57401000	USD
CY2016	us-gaap	Payments Of Dividends Minority Interest PaymentsOfDividendsMinorityInterest	35706000	USD
CY2017	us-gaap	Payments Of Dividends Minority Interest PaymentsOfDividendsMinorityInterest	26799000	USD
CY2015	us-gaap	Payments Of Dividends Preferred Stock And Preference Stock PaymentsOfDividendsPreferredStockAndPreferenceStock	11099000	USD
CY2016	us-gaap	Payments Of Dividends Preferred Stock And Preference Stock PaymentsOfDividendsPreferredStockAndPreferenceStock	10014000	USD
CY2017	us-gaap	Payments Of Dividends Preferred Stock And Preference Stock PaymentsOfDividendsPreferredStockAndPreferenceStock	8594000	USD
CY2015	us-gaap	Payments To Acquire Additional Interest In Subsidiaries PaymentsToAcquireAdditionalInterestInSubsidiaries	4517000	USD
CY2016	us-gaap	Payments To Acquire Additional Interest In Subsidiaries PaymentsToAcquireAdditionalInterestInSubsidiaries	26485000	USD
CY2017	us-gaap	Payments To Acquire Additional Interest In Subsidiaries PaymentsToAcquireAdditionalInterestInSubsidiaries	327815000	USD
CY2015	us-gaap	Payments To Acquire Other Productive Assets PaymentsToAcquireOtherProductiveAssets	6665000	USD
CY2016	us-gaap	Payments To Acquire Other Productive Assets PaymentsToAcquireOtherProductiveAssets	7540000	USD
CY2017	us-gaap	Payments To Acquire Other Productive Assets PaymentsToAcquireOtherProductiveAssets	8899000	USD
CY2015	us-gaap	Payments To Acquire Residential Real Estate PaymentsToAcquireResidentialRealEstate	169447000	USD
CY2016	us-gaap	Payments To Acquire Residential Real Estate PaymentsToAcquireResidentialRealEstate	290729000	USD
CY2017	us-gaap	Payments To Acquire Residential Real Estate PaymentsToAcquireResidentialRealEstate	20372000	USD
CY2015	us-gaap	Preferred Stock Dividends And Other Adjustments PreferredStockDividendsAndOtherAdjustments	11794000	USD
CY2016	us-gaap	Preferred Stock Dividends And Other Adjustments PreferredStockDividendsAndOtherAdjustments	11994000	USD
CY2017	us-gaap	Preferred Stock Dividends And Other Adjustments PreferredStockDividendsAndOtherAdjustments	8594000	USD
CY2017Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.01
CY2016Q4	us-gaap	Preferred Stock Value PreferredStockValue	125000000	USD
CY2017Q4	us-gaap	Preferred Stock Value PreferredStockValue	125000000	USD
CY2015	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	366580000	USD
CY2016	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	0	USD
CY2017	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	0	USD
CY2015	us-gaap	Proceeds From Issuance Of Secured Debt ProceedsFromIssuanceOfSecuredDebt	352602000	USD
CY2016	us-gaap	Proceeds From Issuance Of Secured Debt ProceedsFromIssuanceOfSecuredDebt	417714000	USD
CY2017	us-gaap	Proceeds From Issuance Of Secured Debt ProceedsFromIssuanceOfSecuredDebt	312434000	USD
CY2015	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-2635000	USD
CY2016	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	7090000	USD
CY2017	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-7213000	USD
CY2015	us-gaap	Proceeds From Repayments Of Lines Of Credit ProceedsFromRepaymentsOfLinesOfCredit	-85330000	USD
CY2016	us-gaap	Proceeds From Repayments Of Lines Of Credit ProceedsFromRepaymentsOfLinesOfCredit	-9070000	USD
CY2017	us-gaap	Proceeds From Repayments Of Lines Of Credit ProceedsFromRepaymentsOfLinesOfCredit	49230000	USD
CY2015	us-gaap	Proceeds From Repayments Of Short Term Debt Maturing In More Than Three Months ProceedsFromRepaymentsOfShortTermDebtMaturingInMoreThanThreeMonths	0	USD
CY2016	us-gaap	Proceeds From Repayments Of Short Term Debt Maturing In More Than Three Months ProceedsFromRepaymentsOfShortTermDebtMaturingInMoreThanThreeMonths	0	USD
CY2017	us-gaap	Proceeds From Repayments Of Short Term Debt Maturing In More Than Three Months ProceedsFromRepaymentsOfShortTermDebtMaturingInMoreThanThreeMonths	250000000	USD
CY2015	us-gaap	Proceeds From Sale Of Real Estate Heldforinvestment ProceedsFromSaleOfRealEstateHeldforinvestment	367571000	USD
CY2016	us-gaap	Proceeds From Sale Of Real Estate Heldforinvestment ProceedsFromSaleOfRealEstateHeldforinvestment	535513000	USD
CY2017	us-gaap	Proceeds From Sale Of Real Estate Heldforinvestment ProceedsFromSaleOfRealEstateHeldforinvestment	402162000	USD
CY2015	us-gaap	Profit Loss ProfitLoss	271983000	USD
CY2016Q1	us-gaap	Profit Loss ProfitLoss	29885000	USD
CY2016Q2	us-gaap	Profit Loss ProfitLoss	245953000	USD
CY2016Q3	us-gaap	Profit Loss ProfitLoss	30036000	USD
CY2016Q4	us-gaap	Profit Loss ProfitLoss	177399000	USD
CY2016	us-gaap	Profit Loss ProfitLoss	483273000	USD
CY2017Q1	us-gaap	Profit Loss ProfitLoss	17155000	USD
CY2017Q2	us-gaap	Profit Loss ProfitLoss	21591000	USD
CY2017Q3	us-gaap	Profit Loss ProfitLoss	22144000	USD
CY2017Q4	us-gaap	Profit Loss ProfitLoss	286189000	USD
CY2017	us-gaap	Profit Loss ProfitLoss	347079000	USD
CY2017	us-gaap	Property Plant And Equipment Useful Life PropertyPlantAndEquipmentUsefulLife	P15Y
CY2017Q4	us-gaap	Real Estate Federal Income Tax Basis RealEstateFederalIncomeTaxBasis	3700000000	USD
CY2016Q4	us-gaap	Redeemable Noncontrolling Interest Equity Preferred Carrying Amount RedeemableNoncontrollingInterestEquityPreferredCarryingAmount	103201000	USD
CY2017Q4	us-gaap	Redeemable Noncontrolling Interest Equity Preferred Carrying Amount RedeemableNoncontrollingInterestEquityPreferredCarryingAmount	101537000	USD
CY2015	us-gaap	Repayments Of Secured Debt RepaymentsOfSecuredDebt	514294000	USD
CY2016	us-gaap	Repayments Of Secured Debt RepaymentsOfSecuredDebt	371947000	USD
CY2017	us-gaap	Repayments Of Secured Debt RepaymentsOfSecuredDebt	409167000	USD
CY2015	us-gaap	Revenues Revenues	981310000	USD
CY2016Q1	us-gaap	Revenues Revenues	246239000	USD
CY2016Q2	us-gaap	Revenues Revenues	251218000	USD
CY2016Q3	us-gaap	Revenues Revenues	248904000	USD
CY2016Q4	us-gaap	Revenues Revenues	249493000	USD
CY2016	us-gaap	Revenues Revenues	995854000	USD
CY2017Q1	us-gaap	Revenues Revenues	246481000	USD
CY2017Q2	us-gaap	Revenues Revenues	249092000	USD
CY2017Q3	us-gaap	Revenues Revenues	254635000	USD
CY2017Q4	us-gaap	Revenues Revenues	255229000	USD
CY2017	us-gaap	Revenues Revenues	1005437000	USD
CY2015	us-gaap	Share Based Compensation ShareBasedCompensation	6640000	USD
CY2016	us-gaap	Share Based Compensation ShareBasedCompensation	7629000	USD
CY2017	us-gaap	Share Based Compensation ShareBasedCompensation	7877000	USD
CY2015	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	366580000	USD
CY2015	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	27000000	USD
CY2016	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	34799000	USD
CY2016Q4	us-gaap	Stockholders Equity StockholdersEquity	1793903000	USD
CY2017Q4	us-gaap	Stockholders Equity StockholdersEquity	1663144000	USD
CY2014Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	1442105000	USD
CY2015Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	1763905000	USD
CY2016Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	1944966000	USD
CY2017Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	1655753000	USD
CY2015	us-gaap	Stockholders Equity Other StockholdersEquityOther	-352000	USD
CY2016	us-gaap	Stockholders Equity Other StockholdersEquityOther	-3323000	USD
CY2017	us-gaap	Stockholders Equity Other StockholdersEquityOther	-271000	USD
CY2017Q4	us-gaap	Tax Credit Carryforward Amount TaxCreditCarryforwardAmount	73500000	USD
CY2014Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	2286000	USD
CY2015Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	2897000	USD
CY2016Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	2286000	USD
CY2017Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	2476000	USD
CY2015	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	155570000	shares
CY2016	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	156391000	shares
CY2017	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	156796000	shares
CY2015	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	155177000	shares
CY2016	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	156001000	shares
CY2017	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	156323000	shares
CY2017	us-gaap	Nature Of Operations NatureOfOperations	<div style="font-family:Times New Roman;font-size:10pt;"><div style="line-height:120%;padding-bottom:12px;text-align:justify;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-weight:bold;">Organization</font></div><div style="line-height:120%;padding-bottom:12px;text-align:justify;text-indent:18px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Apartment Investment and Management Company, or Aimco, is a Maryland corporation incorporated on January 10, 1994. Aimco is a self-administered and self-managed real estate investment trust, or REIT. AIMCO Properties, L.P., or the Aimco Operating Partnership, is a Delaware limited partnership formed on May 16, 1994, to conduct our business, which is focused on the ownership, management, redevelopment and limited development of quality apartment communities located in some of the largest markets in the United States.</font></div><div style="line-height:120%;padding-bottom:12px;text-align:justify;text-indent:18px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Aimco, through its wholly-owned subsidiaries, AIMCO-GP, Inc. and AIMCO-LP Trust, owns a majority of the ownership interests in the Aimco Operating Partnership. Aimco conducts all of its business and owns all of its assets through the Aimco Operating Partnership. Interests in the Aimco Operating Partnership that are held by limited partners other than Aimco are referred to as OP Units. OP Units include common partnership units, which we refer to as common OP Units, as well as partnership preferred units, which we refer to as preferred OP Units. As of </font><font style="font-family:inherit;font-size:10pt;">December 31, 2017</font><font style="font-family:inherit;font-size:10pt;">, after eliminations for units held by consolidated subsidiaries, the Aimco Operating Partnership had </font><font style="font-family:inherit;font-size:10pt;">164,617,537</font><font style="font-family:inherit;font-size:10pt;"> common partnership units outstanding. As of </font><font style="font-family:inherit;font-size:10pt;">December 31, 2017</font><font style="font-family:inherit;font-size:10pt;">, Aimco owned </font><font style="font-family:inherit;font-size:10pt;">157,189,447</font><font style="font-family:inherit;font-size:10pt;"> of the common partnership units (</font><font style="font-family:inherit;font-size:10pt;">95.5%</font><font style="font-family:inherit;font-size:10pt;"> of the common partnership units) of the Aimco Operating Partnership and Aimco had outstanding an equal number of shares of its Class A Common Stock, which we refer to as Common Stock.</font></div><div style="line-height:120%;padding-bottom:12px;text-align:justify;text-indent:18px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Except as the context otherwise requires, “we,” “our” and “us” refer to Aimco, the Aimco Operating Partnership and their consolidated subsidiaries, collectively.</font></div><div style="line-height:120%;padding-bottom:12px;text-align:justify;text-indent:18px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">As of </font><font style="font-family:inherit;font-size:10pt;">December 31, 2017</font><font style="font-family:inherit;font-size:10pt;">, we owned an equity interest in </font><font style="font-family:inherit;font-size:10pt;">136</font><font style="font-family:inherit;font-size:10pt;"> apartment communities with </font><font style="font-family:inherit;font-size:10pt;">36,904</font><font style="font-family:inherit;font-size:10pt;"> apartment homes in our Real Estate portfolio. Our Real Estate portfolio, which comprises our reportable segment, is diversified by both price point and geography and consists of market rate apartment communities in which we own a substantial interest. We consolidated </font><font style="font-family:inherit;font-size:10pt;">132</font><font style="font-family:inherit;font-size:10pt;"> of these apartment communities with </font><font style="font-family:inherit;font-size:10pt;">36,762</font><font style="font-family:inherit;font-size:10pt;"> apartment homes. </font></div><div style="line-height:120%;padding-bottom:12px;text-align:justify;text-indent:18px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">As of </font><font style="font-family:inherit;font-size:10pt;">December 31, 2017</font><font style="font-family:inherit;font-size:10pt;">, we also held nominal ownership positions in partnerships that own </font><font style="font-family:inherit;font-size:10pt;">46</font><font style="font-family:inherit;font-size:10pt;"> low-income housing tax credit apartment communities with </font><font style="font-family:inherit;font-size:10pt;">6,898</font><font style="font-family:inherit;font-size:10pt;"> apartment homes. We provide services to these partnerships and receive fees and other payments in return. Our relationship with these partnerships is different than real estate ownership and is better described as an asset management business, or Asset Management. In accordance with accounting principles generally accepted in the United States of America, or GAAP, we are required to consolidate partnerships owning an aggregate of </font><font style="font-family:inherit;font-size:10pt;">39</font><font style="font-family:inherit;font-size:10pt;"> apartment communities with </font><font style="font-family:inherit;font-size:10pt;">6,211</font><font style="font-family:inherit;font-size:10pt;"> apartment homes.</font></div></div>
CY2017	us-gaap	Prior Period Reclassification Adjustment Description PriorPeriodReclassificationAdjustmentDescription	<div style="font-family:Times New Roman;font-size:10pt;"><div style="line-height:120%;padding-bottom:12px;text-align:justify;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-style:italic;font-weight:bold;">Reclassifications</font></div><div style="line-height:120%;padding-bottom:12px;text-align:justify;text-indent:18px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Certain items included in the 2016 and 2015 financial statements have been reclassified to conform to the current presentation.</font></div></div>
CY2017	us-gaap	Use Of Estimates UseOfEstimates	<div style="font-family:Times New Roman;font-size:10pt;"><div style="line-height:120%;padding-bottom:12px;text-align:justify;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-style:italic;font-weight:bold;">Use of Estimates</font></div><div style="line-height:120%;padding-bottom:12px;text-align:justify;text-indent:18px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">The preparation of our consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts included in the financial statements and accompanying notes thereto. Actual results could differ from those estimates.</font></div></div>

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2017 Q4 Form 10-K Financial Statement

#000092286418000006 Filed on March 01, 2018

Income Statement

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$AIV APARTMENT INVESTMENT & MANAGEMENT CO Stock $aiv

2017 Q4 Form 10-K Financial Statement

#000092286418000006 Filed on March 01, 2018

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$AIV
APARTMENT INVESTMENT & MANAGEMENT CO Stock $aiv