$AIV
APARTMENT INVESTMENT & MANAGEMENT CO Stock $aiv

$aiv Overview Financials Valuation SEC Filings Company Website

2018 Form 10-K Financial Statement

#000092286419000007 Filed on February 20, 2019

Income Statement

Concept	2018	2017 Q4	2017 Q3
Revenue	$132.2M	$255.2M	$254.6M
YoY Change	-86.86%	2.3%	2.3%
Cost Of Revenue	$328.8M	$88.80M	$90.00M
YoY Change	-7.28%	5.46%	-1.64%
Gross Profit	$643.6M	$166.4M	$164.6M
YoY Change	-1.12%	0.67%	4.57%
Gross Profit Margin	486.97%	65.2%	64.64%
Selling, General & Admin	$46.30M	$11.60M	$10.50M
YoY Change	5.95%	-1.69%	-14.63%
% of Gross Profit	7.19%	6.97%	6.38%
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$377.8M	$97.40M	$92.50M
YoY Change	3.17%	11.06%	8.95%
% of Gross Profit	58.7%	58.53%	56.2%
Operating Expenses	$108.7M	$149.1M	$195.4M
YoY Change	-86.61%	-21.28%	2.76%
Operating Profit	$534.9M	$17.28M	$59.21M
YoY Change	175.75%	-71.24%	0.81%
Interest Expense	$200.6M	-$47.10M	$50.68M
YoY Change	3.09%	-2.89%	2.64%
% of Operating Profit	37.51%	-272.52%	85.6%
Other Income/Expense, Net	$77.00K	$300.9M	$6.937M
YoY Change	-99.0%	60080.0%	1143.19%
Pretax Income	$3.672M	$271.1M	$17.51M
YoY Change	-98.84%	2140.5%	44.97%
Income Tax	$261.0K	-$100.0K	-$4.870M
% Of Pretax Income	7.11%	-0.04%	-27.82%
Net Earnings	$3.243M	$286.2M	$19.64M
YoY Change	-98.97%	61.33%	26.57%
Net Earnings / Revenue	2.45%	112.13%	7.71%
Basic Earnings Per Share	$0.02	$1.68	$0.11
Diluted Earnings Per Share	$0.02	$1.67	$0.11
COMMON SHARES
Basic Shares Outstanding	148.5M	157.0M shares	156.3M shares
Diluted Shares Outstanding	151.3M		156.8M shares

Balance Sheet

Concept	2018	2017 Q4	2017 Q3
SHORT-TERM ASSETS
Cash & Short-Term Investments	$37.00M	$77.00M	$56.00M
YoY Change	-51.95%	26.23%	16.67%
Cash & Equivalents	$37.00M	$76.79M	$55.68M
Short-Term Investments
Other Short-Term Assets	$26.00M
YoY Change	-29.73%
Inventory	$42.00M	$18.00M
Prepaid Expenses
Receivables	$56.00M
Other Receivables	$0.00
Total Short-Term Assets	$161.0M	$95.00M	$56.00M
YoY Change	12.59%	55.74%	-43.43%
LONG-TERM ASSETS
Property, Plant & Equipment	$5.723B	$5.630B	$5.772B
YoY Change	1.65%	-2.17%	0.28%
Goodwill		$37.80M
YoY Change		0.0%
Intangibles
YoY Change
Long-Term Investments	$96.00M
YoY Change	15.66%
Other Assets	$148.0M	$66.00M	$78.00M
YoY Change	8.82%	-5.71%	-29.09%
Total Long-Term Assets	$6.029B	$5.984B	$6.113B
YoY Change	1.57%	-3.04%	-1.32%
TOTAL ASSETS
Total Short-Term Assets	$161.0M	$95.00M	$56.00M
Total Long-Term Assets	$6.029B	$5.984B	$6.113B
Total Assets	$6.190B	$6.079B	$6.169B
YoY Change	1.83%	-2.47%	-1.98%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable
YoY Change
Accrued Expenses	$226.0M	$220.0M	$228.0M
YoY Change	2.73%	-21.99%	7.55%
Deferred Revenue
YoY Change
Short-Term Debt	$0.00	$250.0M	$249.0M
YoY Change	-100.0%
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities	$226.0M	$470.0M	$477.0M
YoY Change	-51.91%	66.67%	83.46%
LONG-TERM LIABILITIES
Long-Term Debt	$4.076B	$3.839B	$4.141B
YoY Change	6.17%	-1.18%	2.1%
Other Long-Term Liabilities	$23.00M	$12.00M	$14.00M
YoY Change	91.67%	-33.33%	-70.83%
Total Long-Term Liabilities	$4.099B	$3.851B	$4.155B
YoY Change	6.44%	-1.33%	1.24%
TOTAL LIABILITIES
Total Short-Term Liabilities	$226.0M	$470.0M	$477.0M
Total Long-Term Liabilities	$4.099B	$3.851B	$4.155B
Total Liabilities	$4.491B	$4.322B	$4.632B
YoY Change	1.7%	3.28%	6.17%
SHAREHOLDERS EQUITY
Retained Earnings
YoY Change
Common Stock		$1.572M	$1.570M
YoY Change		0.19%	0.06%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$1.699B	$1.663B	$1.454B
YoY Change
Total Liabilities & Shareholders Equity	$6.190B	$6.079B	$6.169B
YoY Change	1.83%	-2.47%	-1.98%

Cashflow Statement

Concept	2018	2017 Q4	2017 Q3
OPERATING ACTIVITIES
Net Income	$3.243M	$286.2M	$19.64M
YoY Change	-98.97%	61.33%	26.57%
Depreciation, Depletion And Amortization	$377.8M	$97.40M	$92.50M
YoY Change	3.17%	11.06%	8.95%
Cash From Operating Activities	$53.49M	$97.00M	$117.6M
YoY Change	-86.36%	-4.15%	17.95%
INVESTING ACTIVITIES
Capital Expenditures	-$590.5M	-$101.7M	-$95.10M
YoY Change	52.43%	11.51%	-74.78%
Acquisitions
YoY Change
Other Investing Activities	$1.508M	$390.6M	-$1.800M
YoY Change	-25.31%	71.62%	-100.6%
Cash From Investing Activities	-$37.84M	$288.9M	-$97.00M
YoY Change	-390.68%	111.65%	21.86%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net	$373.6M
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	-15.92M	-376.9M	-20.50M
YoY Change	-95.96%	67.96%	-25.45%
NET CHANGE
Cash From Operating Activities	53.49M	97.00M	117.6M
Cash From Investing Activities	-37.84M	288.9M	-97.00M
Cash From Financing Activities	-15.92M	-376.9M	-20.50M
Net Change In Cash	-281.0K	9.000M	100.0K
YoY Change	-102.47%	-32.33%	-101.35%
FREE CASH FLOW
Cash From Operating Activities	$53.49M	$97.00M	$117.6M
Capital Expenditures	-$590.5M	-$101.7M	-$95.10M
Free Cash Flow	$644.0M	$198.7M	$212.7M
YoY Change	-17.38%	3.27%	-55.39%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2018Q4	aiv	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Intangible Liabilities BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleLiabilities	12938000	USD
CY2016	aiv	Capital Gains Dividends Declared Percentage CapitalGainsDividendsDeclaredPercentage	0.354
CY2017	aiv	Capital Gains Dividends Declared Percentage CapitalGainsDividendsDeclaredPercentage	0.357
CY2018	aiv	Capital Gains Dividends Declared Percentage CapitalGainsDividendsDeclaredPercentage	0.612
CY2016	aiv	Capital Gains Dividends Per Share Declared CapitalGainsDividendsPerShareDeclared	0.47
CY2017	aiv	Capital Gains Dividends Per Share Declared CapitalGainsDividendsPerShareDeclared	0.51
CY2018	aiv	Capital Gains Dividends Per Share Declared CapitalGainsDividendsPerShareDeclared	0.93
CY2016	aiv	Common Stock Dividends Declared Percentage CommonStockDividendsDeclaredPercentage	1
CY2017	aiv	Common Stock Dividends Declared Percentage CommonStockDividendsDeclaredPercentage	1
CY2018	aiv	Common Stock Dividends Declared Percentage CommonStockDividendsDeclaredPercentage	1
CY2018	aiv	Compliance Period Related To Low Income Housing Tax Credit Arrangements Syndication Period CompliancePeriodRelatedToLowIncomeHousingTaxCreditArrangementsSyndicationPeriod	P15Y
CY2016	aiv	Consolidated Income Loss Subject To Tax ConsolidatedIncomeLossSubjectToTax	109300000	USD
CY2017	aiv	Consolidated Income Loss Subject To Tax ConsolidatedIncomeLossSubjectToTax	-55600000	USD
CY2018	aiv	Consolidated Income Loss Subject To Tax ConsolidatedIncomeLossSubjectToTax	158600000	USD
CY2017Q4	aiv	Deferred Tax Liabilities Partnership Differences DeferredTaxLiabilitiesPartnershipDifferences	32032000	USD
CY2018Q4	aiv	Deferred Tax Liabilities Partnership Differences DeferredTaxLiabilitiesPartnershipDifferences	12058000	USD
CY2016	aiv	Dividends Sharebased Compensation Accrued DividendsSharebasedCompensationAccrued	927000	USD
CY2017	aiv	Dividends Sharebased Compensation Accrued DividendsSharebasedCompensationAccrued	1720000	USD
CY2018	aiv	Dividends Sharebased Compensation Accrued DividendsSharebasedCompensationAccrued	1266000	USD
CY2018	aiv	Economic Interestin Low Income Housing Tax Credit Partnerships EconomicInterestinLowIncomeHousingTaxCreditPartnerships	approximately 100%
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
CY2018	aiv	Effect Of Changes In Ownership For Consolidated Entities EffectOfChangesInOwnershipForConsolidatedEntities	10101000	USD
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
CY2018	aiv	Effective Income Tax Rate Continuing And Discontinued Operations EffectiveIncomeTaxRateContinuingAndDiscontinuedOperations	-0.083
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
CY2018	aiv	Effective Income Tax Rate Reconciliation Effect Of Intercompany Transfers Of Assets EffectiveIncomeTaxRateReconciliationEffectOfIntercompanyTransfersOfAssets	0.210
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
CY2018	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 Percent EffectiveIncomeTaxRateReconciliationRecognitionofDeferredTaxAssetRelatedtoPartnershipBasisDifferencePercent	0.000
CY2017	aiv	Effective Income Tax Rate Reconciliation Recognitionof Deferred Tax Asset Relatedto Partnership Basis Difference Percent EffectiveIncomeTaxRateReconciliationRecognitionofDeferredTaxAssetRelatedtoPartnershipBasisDifferencePercent	0.063
CY2018	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 Tax Cutsand Jobs Actof2017 Amount EffectiveIncomeTaxRateReconciliationTaxCutsandJobsActof2017Amount	0	USD
CY2017	aiv	Effective Income Tax Rate Reconciliation Tax Cutsand Jobs Actof2017 Amount EffectiveIncomeTaxRateReconciliationTaxCutsandJobsActof2017Amount	-15894000	USD
CY2018	aiv	Effective Income Tax Rate Reconciliation Tax Cutsand Jobs Actof2017 Amount EffectiveIncomeTaxRateReconciliationTaxCutsandJobsActof2017Amount	288000	USD
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
CY2018	aiv	Effective Income Tax Rate Reconciliation Tax Cutsand Jobs Actof2017 Percent EffectiveIncomeTaxRateReconciliationTaxCutsandJobsActof2017Percent	0.002
CY2017Q2	aiv	Environmental Remediation Numberof Potentially Responsible Parties EnvironmentalRemediationNumberofPotentiallyResponsibleParties	4	party
CY2016	aiv	Income Tax Expense Benefits IncomeTaxExpenseBenefits	-18842000	USD
CY2017	aiv	Income Tax Expense Benefits IncomeTaxExpenseBenefits	-30836000	USD
CY2018	aiv	Income Tax Expense Benefits IncomeTaxExpenseBenefits	-13027000	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
CY2018	aiv	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance Continuingand Discontinued Operations IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowanceContinuingandDiscontinuedOperations	-20434000	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
CY2018	aiv	Income Tax Reconciliation Effect Of Intercompany Transfers Of Assets IncomeTaxReconciliationEffectOfIntercompanyTransfersOfAssets	33250000	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
CY2018	aiv	Income Tax Reconciliation Income Tax Expense Benefit Continuingand Discontinued Operations At Federal Statutory Income Tax Rate Amount IncomeTaxReconciliationIncomeTaxExpenseBenefitContinuingandDiscontinuedOperationsAtFederalStatutoryIncomeTaxRateAmount	33296000	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
CY2018	aiv	Income Tax Reconciliation State And Local Income Taxes Continuing And Discontinued Operations IncomeTaxReconciliationStateAndLocalIncomeTaxesContinuingAndDiscontinuedOperations	12252000	USD
CY2018Q4	aiv	Lessee Lease Expected Lease Liabilities And Right Of Use Assets As A Percent Of Total Assets LesseeLeaseExpectedLeaseLiabilitiesAndRightOfUseAssetsAsAPercentOfTotalAssets	0.015
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
CY2018	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	708864000	USD
CY2016	aiv	Noncash Or Part Noncash Acquisition Noncash Financial Or Equity Instrument Consideration Shares Issued Value NoncashOrPartNoncashAcquisitionNoncashFinancialOrEquityInstrumentConsiderationSharesIssuedValue	0	USD
CY2017	aiv	Noncash Or Part Noncash Acquisition Noncash Financial Or Equity Instrument Consideration Shares Issued Value NoncashOrPartNoncashAcquisitionNoncashFinancialOrEquityInstrumentConsiderationSharesIssuedValue	0	USD
CY2018	aiv	Noncash Or Part Noncash Acquisition Noncash Financial Or Equity Instrument Consideration Shares Issued Value NoncashOrPartNoncashAcquisitionNoncashFinancialOrEquityInstrumentConsiderationSharesIssuedValue	50151000	USD
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
CY2018	aiv	Noncontrolling Interest Weighted Average Ownership Percentage By Noncontrolling Owners During Period NoncontrollingInterestWeightedAverageOwnershipPercentageByNoncontrollingOwnersDuringPeriod	0.049
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
CY2018Q4	aiv	Nonvested Restricted Shares Of Common Stock With Non Forfeitable Dividend Rights NonvestedRestrictedSharesOfCommonStockWithNonForfeitableDividendRights	300000	shares
CY2018Q4	aiv	Numberof Sharesof Common Stock Requiredto Redeem Preferred Op Units Tenderedfor Redemptionif Parent Choosesto Redeemin Shares Ratherthan Cash NumberofSharesofCommonStockRequiredtoRedeemPreferredOPUnitsTenderedforRedemptionifParentChoosestoRedeeminSharesRatherthanCash	2300000	shares
CY2016	aiv	Operating Income Loss Property OperatingIncomeLossProperty	0	USD
CY2017	aiv	Operating Income Loss Property OperatingIncomeLossProperty	0	USD
CY2018	aiv	Operating Income Loss Property OperatingIncomeLossProperty	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
CY2018	aiv	Operating Partnership Units Issuedin Exchangefor Acquisitionsof Real Estate OperatingPartnershipUnitsIssuedinExchangeforAcquisitionsofRealEstate	0	USD
CY2016	aiv	Ordinary Income Dividends Declared Percentage OrdinaryIncomeDividendsDeclaredPercentage	0.342
CY2017	aiv	Ordinary Income Dividends Declared Percentage OrdinaryIncomeDividendsDeclaredPercentage	0.515
CY2018	aiv	Ordinary Income Dividends Declared Percentage OrdinaryIncomeDividendsDeclaredPercentage	0.334
CY2016	aiv	Ordinary Income Dividends Per Share Declared OrdinaryIncomeDividendsPerShareDeclared	0.45
CY2017	aiv	Ordinary Income Dividends Per Share Declared OrdinaryIncomeDividendsPerShareDeclared	0.75
CY2018	aiv	Ordinary Income Dividends Per Share Declared OrdinaryIncomeDividendsPerShareDeclared	0.51
CY2016	aiv	Other Comprehensive Income Loss OtherComprehensiveIncomeLoss	7662000	USD
CY2017	aiv	Other Comprehensive Income Loss OtherComprehensiveIncomeLoss	2814000	USD
CY2018	aiv	Other Comprehensive Income Loss OtherComprehensiveIncomeLoss	1260000	USD
CY2016	aiv	Other Direct And Indirect Costs Capitalized OtherDirectAndIndirectCostsCapitalized	32900000	USD
CY2017	aiv	Other Direct And Indirect Costs Capitalized OtherDirectAndIndirectCostsCapitalized	36000000	USD
CY2018	aiv	Other Direct And Indirect Costs Capitalized OtherDirectAndIndirectCostsCapitalized	36800000	USD
CY2016	aiv	Other Items Included In Continuing Operations OtherItemsIncludedInContinuingOperations	-217635000	USD
CY2017	aiv	Other Items Included In Continuing Operations OtherItemsIncludedInContinuingOperations	-122260000	USD
CY2018	aiv	Other Items Included In Continuing Operations OtherItemsIncludedInContinuingOperations	-487820000	USD
CY2016	aiv	Other Operating Expenses Not Allocatedto Reportable Segment OtherOperatingExpensesNotAllocatedtoReportableSegment	394145000	USD
CY2017	aiv	Other Operating Expenses Not Allocatedto Reportable Segment OtherOperatingExpensesNotAllocatedtoReportableSegment	456870000	USD
CY2018	aiv	Other Operating Expenses Not Allocatedto Reportable Segment OtherOperatingExpensesNotAllocatedtoReportableSegment	427832000	USD
CY2018Q4	aiv	Percentage Of Income Tax On Income From Non Arms Length Transactions PercentageOfIncomeTaxOnIncomeFromNonArmsLengthTransactions	1
CY2018	aiv	Period Of Time Over Which Low Income Housing Tax Credits Realized By Investors PeriodOfTimeOverWhichLowIncomeHousingTaxCreditsRealizedByInvestors	P10Y
CY2018	aiv	Total Deferred Income Tax Expense Benefit TotalDeferredIncomeTaxExpenseBenefit	-34833000	USD
CY2016	aiv	Total Deferred Stateand Local Income Tax Expense Benefit TotalDeferredStateandLocalIncomeTaxExpenseBenefit	-623000	USD
CY2018	aiv	Unrecognized Tax Benefits Increase Decrease Resultingfrom Prior Periodand Current Year Tax Positions UnrecognizedTaxBenefitsIncreaseDecreaseResultingfromPriorPeriodandCurrentYearTaxPositions	142000	USD
CY2016	aiv	Qualified Dividends Declared Percentage QualifiedDividendsDeclaredPercentage	0.099
CY2017	aiv	Qualified Dividends Declared Percentage QualifiedDividendsDeclaredPercentage	0.016
CY2018	aiv	Qualified Dividends Declared Percentage QualifiedDividendsDeclaredPercentage	0.000
CY2016	aiv	Qualified Dividends Per Share Declared QualifiedDividendsPerShareDeclared	0.13
CY2017	aiv	Qualified Dividends Per Share Declared QualifiedDividendsPerShareDeclared	0.02
CY2018	aiv	Qualified Dividends Per Share Declared QualifiedDividendsPerShareDeclared	0.00
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
CY2018	aiv	Redemption Of Operating Partnership Units In Exchange For Cash Or Shares Of Common Stock RedemptionOfOperatingPartnershipUnitsInExchangeForCashOrSharesOfCommonStock	9639000	USD
CY2016	aiv	Tax Credit And Asset Management Revenues TaxCreditAndAssetManagementRevenues	21323000	USD
CY2017	aiv	Tax Credit And Asset Management Revenues TaxCreditAndAssetManagementRevenues	13243000	USD
CY2018	aiv	Tax Credit And Asset Management Revenues TaxCreditAndAssetManagementRevenues	6987000	USD
	aiv	Tax Cuts And Jobs Act Of2017 Income Tax Expense Benefit TaxCutsAndJobsActOf2017IncomeTaxExpenseBenefit	-15600000	USD
CY2016	aiv	Total Current Federal Tax Expense Benefit TotalCurrentFederalTaxExpenseBenefit	5038000	USD
CY2017	aiv	Total Current Federal Tax Expense Benefit TotalCurrentFederalTaxExpenseBenefit	-938000	USD
CY2018	aiv	Total Current Federal Tax Expense Benefit TotalCurrentFederalTaxExpenseBenefit	11269000	USD
CY2016	aiv	Total Current Income Tax Expense Benefit TotalCurrentIncomeTaxExpenseBenefit	7954000	USD
CY2017	aiv	Total Current Income Tax Expense Benefit TotalCurrentIncomeTaxExpenseBenefit	-413000	USD
CY2018	aiv	Total Current Income Tax Expense Benefit TotalCurrentIncomeTaxExpenseBenefit	21806000	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
CY2018	aiv	Total Current Stateand Local Tax Expense Benefit TotalCurrentStateandLocalTaxExpenseBenefit	10537000	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
CY2018	aiv	Total Deferred Federal Income Tax Expense Benefit TotalDeferredFederalIncomeTaxExpenseBenefit	-29243000	USD
CY2016	aiv	Total Deferred Income Tax Expense Benefit TotalDeferredIncomeTaxExpenseBenefit	-26796000	USD
CY2017	aiv	Total Deferred Income Tax Expense Benefit TotalDeferredIncomeTaxExpenseBenefit	-30423000	USD
CY2017	aiv	Total Deferred Stateand Local Income Tax Expense Benefit TotalDeferredStateandLocalIncomeTaxExpenseBenefit	-3621000	USD
CY2018	aiv	Total Deferred Stateand Local Income Tax Expense Benefit TotalDeferredStateandLocalIncomeTaxExpenseBenefit	-5590000	USD
CY2016	aiv	Unrecaptured Gain Dividends Declared Percentage UnrecapturedGainDividendsDeclaredPercentage	0.205
CY2017	aiv	Unrecaptured Gain Dividends Declared Percentage UnrecapturedGainDividendsDeclaredPercentage	0.112
CY2018	aiv	Unrecaptured Gain Dividends Declared Percentage UnrecapturedGainDividendsDeclaredPercentage	0.054
CY2016	aiv	Unrecaptured Gain Dividends Per Share Declared UnrecapturedGainDividendsPerShareDeclared	0.27
CY2017	aiv	Unrecaptured Gain Dividends Per Share Declared UnrecapturedGainDividendsPerShareDeclared	0.16
CY2018	aiv	Unrecaptured Gain Dividends Per Share Declared UnrecapturedGainDividendsPerShareDeclared	0.08
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
CY2018	dei	Amendment Flag AmendmentFlag	false
CY2018	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2018	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2018	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2018
CY2018	dei	Document Period End Date DocumentPeriodEndDate	2018-12-31
CY2018	dei	Document Type DocumentType	10-K
CY2018	dei	Entity Central Index Key EntityCentralIndexKey	0000922864
CY2019Q1	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	148766616	shares
CY2018	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2018	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
CY2018	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
CY2018Q2	dei	Entity Public Float EntityPublicFloat	6600000000	USD
CY2018	dei	Entity Registrant Name EntityRegistrantName	APARTMENT INVESTMENT & MANAGEMENT CO
CY2018	dei	Entity Shell Company EntityShellCompany	false
CY2018	dei	Entity Small Business EntitySmallBusiness	false
CY2018	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2018	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	Yes
CY2018Q4	srt	Real Estate Federal Income Tax Basis RealEstateFederalIncomeTaxBasis	4000000000	USD
CY2017Q4	us-gaap	Accumulated Distributions In Excess Of Net Income AccumulatedDistributionsInExcessOfNetIncome	2367073000	USD
CY2018Q4	us-gaap	Accumulated Distributions In Excess Of Net Income AccumulatedDistributionsInExcessOfNetIncome	1947507000	USD
CY2017Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	3603000	USD
CY2018Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	4794000	USD
CY2017Q4	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	3900042000	USD
CY2018Q4	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	3515641000	USD
CY2016	us-gaap	Adjustments Noncash Items To Reconcile Net Income Loss To Cash Provided By Used In Operating Activities AdjustmentsNoncashItemsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivities	-106772000	USD
CY2017	us-gaap	Adjustments Noncash Items To Reconcile Net Income Loss To Cash Provided By Used In Operating Activities AdjustmentsNoncashItemsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivities	44993000	USD
CY2018	us-gaap	Adjustments Noncash Items To Reconcile Net Income Loss To Cash Provided By Used In Operating Activities AdjustmentsNoncashItemsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivities	-320215000	USD
CY2016	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	8610000	USD
CY2017	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	9251000	USD
CY2018	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	9765000	USD
CY2016	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	8600000	USD
CY2017	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	9300000	USD
CY2018	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	9700000	USD
CY2016	us-gaap	Amortization Of Below Market Lease AmortizationOfBelowMarketLease	1700000	USD
CY2017	us-gaap	Amortization Of Below Market Lease AmortizationOfBelowMarketLease	1300000	USD
CY2018	us-gaap	Amortization Of Below Market Lease AmortizationOfBelowMarketLease	2300000	USD
CY2016	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	5060000	USD
CY2017	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	5666000	USD
CY2018	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	9023000	USD
CY2017	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	200000	shares
CY2018	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	300000	shares
CY2017Q4	us-gaap	Assets Assets	6079040000	USD
CY2018Q4	us-gaap	Assets Assets	6190004000	USD
CY2016	us-gaap	Basic Earnings Per Share Pro Forma BasicEarningsPerShareProForma	2.76
CY2017	us-gaap	Basic Earnings Per Share Pro Forma BasicEarningsPerShareProForma	2.02
CY2018	us-gaap	Basic Earnings Per Share Pro Forma BasicEarningsPerShareProForma	4.34
CY2017Q4	us-gaap	Below Market Lease Accumulated Amortization BelowMarketLeaseAccumulatedAmortization	34400000	USD
CY2018Q4	us-gaap	Below Market Lease Accumulated Amortization BelowMarketLeaseAccumulatedAmortization	36700000	USD
CY2018Q4	us-gaap	Below Market Lease Amortization Income Next Twelve Months BelowMarketLeaseAmortizationIncomeNextTwelveMonths	1986000	USD
CY2018Q4	us-gaap	Below Market Lease Amortization Income Year Five BelowMarketLeaseAmortizationIncomeYearFive	1571000	USD
CY2018Q4	us-gaap	Below Market Lease Amortization Income Year Four BelowMarketLeaseAmortizationIncomeYearFour	1621000	USD
CY2018Q4	us-gaap	Below Market Lease Amortization Income Year Three BelowMarketLeaseAmortizationIncomeYearThree	1668000	USD
CY2018Q4	us-gaap	Below Market Lease Amortization Income Year Two BelowMarketLeaseAmortizationIncomeYearTwo	1741000	USD
CY2017Q4	us-gaap	Below Market Lease Net BelowMarketLeaseNet	9100000	USD
CY2018Q4	us-gaap	Below Market Lease Net BelowMarketLeaseNet	18700000	USD
CY2018Q4	us-gaap	Business Acquisition Cost Of Acquired Entity Transaction Costs BusinessAcquisitionCostOfAcquiredEntityTransactionCosts	7591000	USD
CY2018	us-gaap	Business Combination Consideration Transferred1 BusinessCombinationConsiderationTransferred1	483066000	USD
CY2018Q4	us-gaap	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Buildings BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedBuildings	424718000	USD
CY2018Q4	us-gaap	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Intangible Assets Other Than Goodwill BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill	9700000	USD
CY2018Q4	us-gaap	Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Land BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLand	69177000	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
CY2018	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	40185000	USD
CY2015Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	137745000	USD
CY2016Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	131150000	USD
CY2017Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	142541000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	72595000	USD
CY2016	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Excluding Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect	-6595000	USD
CY2017	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Excluding Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect	11391000	USD
CY2018	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Excluding Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect	-69946000	USD
CY2017Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2018Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2016	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	1.32
CY2016	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	1.32
CY2017	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	1.44
CY2017	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	1.44
CY2018	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	1.52
CY2018	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	1.52
CY2017Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2018Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2017Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	500787260	shares
CY2018Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	500787260	shares
CY2017Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	157189447	shares
CY2018Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	149133826	shares
CY2017Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	157189447	shares
CY2018Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	149133826	shares
CY2017Q4	us-gaap	Common Stock Value CommonStockValue	1572000	USD
CY2018Q4	us-gaap	Common Stock Value CommonStockValue	1491000	USD
CY2016	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	437461000	USD
CY2017	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	318366000	USD
CY2018	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	667418000	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
CY2018	us-gaap	Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest	50445000	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
CY2018	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	717863000	USD
CY2017Q1	us-gaap	Cumulative Effect Of New Accounting Principle In Period Of Adoption CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	-65710000	USD
CY2018	us-gaap	Debt Instrument Basis Spread On Variable Rate1 DebtInstrumentBasisSpreadOnVariableRate1	0.0020
CY2017Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	89748000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	84048000	USD
CY2017Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	32227000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Liabilities Net DeferredTaxAssetsLiabilitiesNet	67060000	USD
CY2017Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	9523000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	7022000	USD
CY2017Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	200000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	2064000	USD
CY2017Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards DeferredTaxAssetsTaxCreditCarryforwards	73450000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards DeferredTaxAssetsTaxCreditCarryforwards	67530000	USD
CY2017Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Accrued Liabilities DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities	6575000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Accrued Liabilities DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities	7432000	USD
CY2017Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	25489000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	4930000	USD
CY2016	us-gaap	Depreciation And Amortization DepreciationAndAmortization	333066000	USD
CY2017	us-gaap	Depreciation And Amortization DepreciationAndAmortization	366184000	USD
CY2018	us-gaap	Depreciation And Amortization DepreciationAndAmortization	377786000	USD
CY2016	us-gaap	Diluted Earnings Per Share Pro Forma DilutedEarningsPerShareProForma	2.75
CY2017	us-gaap	Diluted Earnings Per Share Pro Forma DilutedEarningsPerShareProForma	2.02
CY2018	us-gaap	Diluted Earnings Per Share Pro Forma DilutedEarningsPerShareProForma	4.34
CY2016	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	206898000	USD
CY2017	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	226172000	USD
CY2018	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	238067000	USD
CY2016	us-gaap	Dividends Preferred Stock Cash DividendsPreferredStockCash	10014000	USD
CY2017	us-gaap	Dividends Preferred Stock Cash DividendsPreferredStockCash	8594000	USD
CY2018	us-gaap	Dividends Preferred Stock Cash DividendsPreferredStockCash	8594000	USD
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
CY2018Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.52
CY2018Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.02
CY2018Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	3.62
CY2018Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.03
CY2018	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	4.21
CY2016	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.67
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
CY2018Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.52
CY2018Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.02
CY2018Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	3.61
CY2018Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.03
CY2018	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	4.21
CY2016	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.35
CY2017	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.35
CY2018	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.21
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
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	-0.129
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
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Nondeductible Expense EffectiveIncomeTaxRateReconciliationNondeductibleExpense	0.002
CY2016	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	0.000
CY2016	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	46784000	USD
CY2017	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	43657000	USD
CY2018	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	46268000	USD
CY2017Q4	us-gaap	Goodwill Goodwill	37800000	USD
CY2018Q4	us-gaap	Goodwill Goodwill	37800000	USD
CY2016	us-gaap	Impairment Of Real Estate ImpairmentOfRealEstate	0	USD
CY2017	us-gaap	Impairment Of Real Estate ImpairmentOfRealEstate	35881000	USD
CY2018	us-gaap	Impairment Of Real Estate ImpairmentOfRealEstate	0	USD
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	0.000
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	0.009
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
CY2018	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.077
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
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Tax Credits EffectiveIncomeTaxRateReconciliationTaxCredits	0.044
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
CY2018	us-gaap	Employee Service Share Based Compensation Allocation Of Recognized Period Costs Capitalized Amount EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount	1200000	USD
CY2018Q4	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized	11000000	USD
CY2018	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Period For Recognition1 EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1	P1Y7M
CY2016	us-gaap	Gain Loss On Sale Of Properties Before Applicable Income Taxes GainLossOnSaleOfPropertiesBeforeApplicableIncomeTaxes	400156000	USD
CY2017	us-gaap	Gain Loss On Sale Of Properties Before Applicable Income Taxes GainLossOnSaleOfPropertiesBeforeApplicableIncomeTaxes	300849000	USD
CY2018	us-gaap	Gain Loss On Sale Of Properties Before Applicable Income Taxes GainLossOnSaleOfPropertiesBeforeApplicableIncomeTaxes	677463000	USD
CY2016	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	464431000	USD
CY2017	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	316243000	USD
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	703576000	USD
CY2016	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-18842000	USD
CY2017	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-30836000	USD
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-13027000	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
CY2018	us-gaap	Income Tax Reconciliation Change In Enacted Tax Rate IncomeTaxReconciliationChangeInEnactedTaxRate	0	USD
CY2016	us-gaap	Income Tax Reconciliation Nondeductible Expense IncomeTaxReconciliationNondeductibleExpense	-132000	USD
CY2017	us-gaap	Income Tax Reconciliation Nondeductible Expense IncomeTaxReconciliationNondeductibleExpense	-1629000	USD
CY2018	us-gaap	Income Tax Reconciliation Nondeductible Expense IncomeTaxReconciliationNondeductibleExpense	302000	USD
CY2016	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	0	USD
CY2017	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	0	USD
CY2018	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	1416000	USD
CY2016	us-gaap	Income Tax Reconciliation Tax Credits IncomeTaxReconciliationTaxCredits	16750000	USD
CY2017	us-gaap	Income Tax Reconciliation Tax Credits IncomeTaxReconciliationTaxCredits	9607000	USD
CY2018	us-gaap	Income Tax Reconciliation Tax Credits IncomeTaxReconciliationTaxCredits	6897000	USD
CY2016	us-gaap	Income Taxes Paid IncomeTaxesPaid	2200000	USD
CY2016	us-gaap	Income Taxes Paid IncomeTaxesPaid	2152000	USD
CY2017	us-gaap	Income Taxes Paid IncomeTaxesPaid	7401000	USD
CY2017	us-gaap	Income Taxes Paid IncomeTaxesPaid	7400000	USD
CY2016	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-99147000	USD
CY2018	us-gaap	Income Taxes Paid IncomeTaxesPaid	11500000	USD
CY2018	us-gaap	Income Taxes Paid IncomeTaxesPaid	11522000	USD
CY2016	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	-5164000	USD
CY2017	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	-15395000	USD
CY2018	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	1681000	USD
CY2016	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	22294000	USD
CY2017	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	15841000	USD
CY2018	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	27830000	USD
CY2016	us-gaap	Interest Costs Capitalized InterestCostsCapitalized	9600000	USD
CY2017	us-gaap	Interest Costs Capitalized InterestCostsCapitalized	7600000	USD
CY2018	us-gaap	Interest Costs Capitalized InterestCostsCapitalized	7600000	USD
CY2016	us-gaap	Interest Expense InterestExpense	196389000	USD
CY2017	us-gaap	Interest Expense InterestExpense	194615000	USD
CY2018	us-gaap	Interest Expense InterestExpense	200634000	USD
CY2016	us-gaap	Interest Paid Net InterestPaidNet	200278000	USD
CY2017	us-gaap	Interest Paid Net InterestPaidNet	196438000	USD
CY2018	us-gaap	Interest Paid Net InterestPaidNet	199996000	USD
CY2016	us-gaap	Investment Income Interest InvestmentIncomeInterest	7797000	USD
CY2017	us-gaap	Investment Income Interest InvestmentIncomeInterest	8332000	USD
CY2018	us-gaap	Investment Income Interest InvestmentIncomeInterest	10914000	USD
CY2018Q4	us-gaap	Lessor Operating Lease Term Of Contract LessorOperatingLeaseTermOfContract	P13M
CY2018Q4	us-gaap	Letters Of Credit Outstanding Amount LettersOfCreditOutstandingAmount	7100000	USD
CY2017Q4	us-gaap	Liabilities Liabilities	4321750000	USD
CY2018Q4	us-gaap	Liabilities Liabilities	4325072000	USD
CY2017Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	6079040000	USD
CY2018Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	6190004000	USD
CY2018	us-gaap	Limited Liability Company Llc Or Limited Partnership Lp Managing Member Or General Partner Ownership Interest LimitedLiabilityCompanyLLCOrLimitedPartnershipLPManagingMemberOrGeneralPartnerOwnershipInterest	0.943
CY2018Q4	us-gaap	Limited Partners Capital Account Units Outstanding LimitedPartnersCapitalAccountUnitsOutstanding	149133826	shares
CY2018	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
CY2018	us-gaap	Line Of Credit Facility Expiration Date1 LineOfCreditFacilityExpirationDate1	2022-01-22
CY2017Q4	us-gaap	Line Of Credit Facility Interest Rate At Period End LineOfCreditFacilityInterestRateAtPeriodEnd	0.0326
CY2018Q4	us-gaap	Line Of Credit Facility Interest Rate At Period End LineOfCreditFacilityInterestRateAtPeriodEnd	0.0393
CY2018	us-gaap	Line Of Credit Facility Interest Rate Description LineOfCreditFacilityInterestRateDescription	LIBOR plus 1.20%, or, at our option, a base rate plus 0.20%
CY2018Q4	us-gaap	Line Of Credit Facility Remaining Borrowing Capacity LineOfCreditFacilityRemainingBorrowingCapacity	632500000	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
CY2018	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	22310000	USD
CY2017Q4	us-gaap	Minority Interest In Limited Partnerships MinorityInterestInLimitedPartnerships	-1716000	USD
CY2018Q4	us-gaap	Minority Interest In Limited Partnerships MinorityInterestInLimitedPartnerships	-2967000	USD
CY2017Q4	us-gaap	Minority Interest In Operating Partnerships MinorityInterestInOperatingPartnerships	-5675000	USD
CY2018Q4	us-gaap	Minority Interest In Operating Partnerships MinorityInterestInOperatingPartnerships	67189000	USD
CY2016	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-283949000	USD
CY2017	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-393700000	USD
CY2018	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-588180000	USD
CY2017	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	13019000	USD
CY2018	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	121846000	USD
CY2016	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	376501000	USD
CY2017	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	392072000	USD
CY2018	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	396388000	USD
CY2016	us-gaap	Net Income Loss NetIncomeLoss	430410000	USD
CY2017	us-gaap	Net Income Loss NetIncomeLoss	315774000	USD
CY2018	us-gaap	Net Income Loss NetIncomeLoss	666227000	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
CY2018	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	50376000	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
CY2018Q1	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	81525000	USD
CY2018Q2	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	2817000	USD
CY2018Q3	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	567029000	USD
CY2018Q4	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	5226000	USD
CY2018	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	656597000	USD
CY2016	us-gaap	Noncash Or Part Noncash Acquisition Debt Assumed1 NoncashOrPartNoncashAcquisitionDebtAssumed1	0	USD
CY2017	us-gaap	Noncash Or Part Noncash Acquisition Debt Assumed1 NoncashOrPartNoncashAcquisitionDebtAssumed1	0	USD
CY2018	us-gaap	Noncash Or Part Noncash Acquisition Debt Assumed1 NoncashOrPartNoncashAcquisitionDebtAssumed1	208885000	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
CY2018	us-gaap	Noncontrolling Interest In Net Income Loss Limited Partnerships Nonredeemable NoncontrollingInterestInNetIncomeLossLimitedPartnershipsNonredeemable	8220000	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
CY2018	us-gaap	Noncontrolling Interest In Net Income Loss Operating Partnerships Nonredeemable NoncontrollingInterestInNetIncomeLossOperatingPartnershipsNonredeemable	34417000	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
CY2018	us-gaap	Noncontrolling Interest In Net Income Loss Preferred Unit Holders Nonredeemable NoncontrollingInterestInNetIncomeLossPreferredUnitHoldersNonredeemable	7739000	USD
CY2017	us-gaap	Noncontrolling Interest Increase From Subsidiary Equity Issuance NoncontrollingInterestIncreaseFromSubsidiaryEquityIssuance	3401000	USD
CY2016	us-gaap	Notes Reduction NotesReduction	0	USD
CY2017	us-gaap	Notes Reduction NotesReduction	0	USD
CY2018	us-gaap	Notes Reduction NotesReduction	227708000	USD
CY2018Q4	us-gaap	Number Of Real Estate Properties NumberOfRealEstateProperties	6	community
CY2018	us-gaap	Number Of Reportable Segments NumberOfReportableSegments	1	Segment
CY2018Q4	us-gaap	Number Of Units In Real Estate Property NumberOfUnitsInRealEstateProperty	1480	apartment_home
CY2016	us-gaap	Operating Expenses OperatingExpenses	749058000	USD
CY2017	us-gaap	Operating Expenses OperatingExpenses	811454000	USD
CY2018	us-gaap	Operating Expenses OperatingExpenses	756654000	USD
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due OperatingLeasesFutureMinimumPaymentsDue	456930000	USD
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due Current OperatingLeasesFutureMinimumPaymentsDueCurrent	4351000	USD
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due In Five Years OperatingLeasesFutureMinimumPaymentsDueInFiveYears	4363000	USD
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due In Four Years OperatingLeasesFutureMinimumPaymentsDueInFourYears	5074000	USD
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due In Three Years OperatingLeasesFutureMinimumPaymentsDueInThreeYears	5158000	USD
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due In Two Years OperatingLeasesFutureMinimumPaymentsDueInTwoYears	5171000	USD
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due Thereafter OperatingLeasesFutureMinimumPaymentsDueThereafter	432813000	USD
CY2018Q4	us-gaap	Operating Loss Carryforwards OperatingLossCarryforwards	7000000	USD
CY2018Q4	us-gaap	Operating Loss Carryforwards Valuation Allowance OperatingLossCarryforwardsValuationAllowance	4900000	USD
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
CY2018	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	-131000	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
CY2018	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	1260000	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
CY2018	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax	-1391000	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
CY2018	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax	0	USD
CY2016	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	14295000	USD
CY2017	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	11148000	USD
CY2018	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	3778000	USD
CY2016	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	6071000	USD
CY2017	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	7694000	USD
CY2018	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-1065000	USD
CY2016	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	6071000	USD
CY2017	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	7694000	USD
CY2018	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	77000	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
CY2018	us-gaap	Participating Securities Distributed And Undistributed Earnings Loss Basic ParticipatingSecuritiesDistributedAndUndistributedEarningsLossBasic	1037000	USD
CY2018	us-gaap	Partners Capital Account Sale Of Units PartnersCapitalAccountSaleOfUnits	50151000	USD
CY2016	us-gaap	Payments For Capital Improvements PaymentsForCapitalImprovements	346645000	USD
CY2017	us-gaap	Payments For Capital Improvements PaymentsForCapitalImprovements	358104000	USD
CY2018	us-gaap	Payments For Capital Improvements PaymentsForCapitalImprovements	340489000	USD
CY2016	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	-9842000	USD
CY2017	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	2019000	USD
CY2018	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	1508000	USD
CY2016	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	0	USD
CY2017	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	0	USD
CY2018	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	373593000	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
CY2018	us-gaap	Payments For Repurchase Of Preferred Stock And Preference Stock PaymentsForRepurchaseOfPreferredStockAndPreferenceStock	0	USD
CY2016	us-gaap	Payments Of Debt Extinguishment Costs PaymentsOfDebtExtinguishmentCosts	391000	USD
CY2017	us-gaap	Payments Of Debt Extinguishment Costs PaymentsOfDebtExtinguishmentCosts	399000	USD
CY2018	us-gaap	Payments Of Debt Extinguishment Costs PaymentsOfDebtExtinguishmentCosts	14241000	USD
CY2016	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	7816000	USD
CY2017	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	4751000	USD
CY2018	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	11961000	USD
CY2016	us-gaap	Weighted Average Basic Shares Outstanding Pro Forma WeightedAverageBasicSharesOutstandingProForma	151282000	shares
CY2017	us-gaap	Weighted Average Basic Shares Outstanding Pro Forma WeightedAverageBasicSharesOutstandingProForma	151595000	shares
CY2018	us-gaap	Weighted Average Basic Shares Outstanding Pro Forma WeightedAverageBasicSharesOutstandingProForma	151152000	shares
CY2016	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	400000	shares
CY2016	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	206279000	USD
CY2017	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	225377000	USD
CY2018	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	237504000	USD
CY2016	us-gaap	Payments Of Dividends Minority Interest PaymentsOfDividendsMinorityInterest	35706000	USD
CY2017	us-gaap	Payments Of Dividends Minority Interest PaymentsOfDividendsMinorityInterest	26799000	USD
CY2018	us-gaap	Payments Of Dividends Minority Interest PaymentsOfDividendsMinorityInterest	29196000	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
CY2018	us-gaap	Payments Of Dividends Preferred Stock And Preference Stock PaymentsOfDividendsPreferredStockAndPreferenceStock	8594000	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
CY2018	us-gaap	Payments To Acquire Other Productive Assets PaymentsToAcquireOtherProductiveAssets	7718000	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
CY2018	us-gaap	Payments To Acquire Residential Real Estate PaymentsToAcquireResidentialRealEstate	242297000	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
CY2018	us-gaap	Preferred Stock Dividends And Other Adjustments PreferredStockDividendsAndOtherAdjustments	8593000	USD
CY2017Q4	us-gaap	Preferred Stock Value PreferredStockValue	125000000	USD
CY2018Q4	us-gaap	Preferred Stock Value PreferredStockValue	125000000	USD
CY2016	us-gaap	Pro Forma Weighted Average Shares Outstanding Diluted ProFormaWeightedAverageSharesOutstandingDiluted	151669000	shares
CY2017	us-gaap	Pro Forma Weighted Average Shares Outstanding Diluted ProFormaWeightedAverageSharesOutstandingDiluted	152060000	shares
CY2018	us-gaap	Pro Forma Weighted Average Shares Outstanding Diluted ProFormaWeightedAverageSharesOutstandingDiluted	151334000	shares
CY2016	us-gaap	Proceeds From Collection Of Loans Receivable ProceedsFromCollectionOfLoansReceivable	412000	USD
CY2017	us-gaap	Proceeds From Collection Of Loans Receivable ProceedsFromCollectionOfLoansReceivable	430000	USD
CY2018	us-gaap	Proceeds From Collection Of Loans Receivable ProceedsFromCollectionOfLoansReceivable	5010000	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
CY2018	us-gaap	Proceeds From Issuance Of Secured Debt ProceedsFromIssuanceOfSecuredDebt	1228027000	USD
CY2016	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	844000	USD
CY2017	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-2462000	USD
CY2018	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	5233000	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
CY2018	us-gaap	Proceeds From Repayments Of Lines Of Credit ProceedsFromRepaymentsOfLinesOfCredit	93200000	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
CY2018	us-gaap	Proceeds From Repayments Of Short Term Debt Maturing In More Than Three Months ProceedsFromRepaymentsOfShortTermDebtMaturingInMoreThanThreeMonths	-250000000	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	401983000	USD
CY2018	us-gaap	Proceeds From Sale Of Real Estate Heldforinvestment ProceedsFromSaleOfRealEstateHeldforinvestment	708848000	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
CY2017	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	500000	shares
CY2017Q4	us-gaap	Profit Loss ProfitLoss	286189000	USD
CY2017	us-gaap	Profit Loss ProfitLoss	347079000	USD
CY2018Q1	us-gaap	Profit Loss ProfitLoss	95690000	USD
CY2018Q2	us-gaap	Profit Loss ProfitLoss	7156000	USD
CY2018Q3	us-gaap	Profit Loss ProfitLoss	603917000	USD
CY2018Q4	us-gaap	Profit Loss ProfitLoss	9840000	USD
CY2018	us-gaap	Profit Loss ProfitLoss	716603000	USD
CY2018	us-gaap	Property Plant And Equipment Useful Life PropertyPlantAndEquipmentUsefulLife	P15Y
CY2017Q4	us-gaap	Redeemable Noncontrolling Interest Equity Preferred Carrying Amount RedeemableNoncontrollingInterestEquityPreferredCarryingAmount	101537000	USD
CY2018Q4	us-gaap	Redeemable Noncontrolling Interest Equity Preferred Carrying Amount RedeemableNoncontrollingInterestEquityPreferredCarryingAmount	101291000	USD
CY2016	us-gaap	Repayments Of Secured Debt RepaymentsOfSecuredDebt	371947000	USD
CY2017	us-gaap	Repayments Of Secured Debt RepaymentsOfSecuredDebt	409167000	USD
CY2018	us-gaap	Repayments Of Secured Debt RepaymentsOfSecuredDebt	976087000	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
CY2018Q1	us-gaap	Revenues Revenues	247720000	USD
CY2018Q2	us-gaap	Revenues Revenues	250187000	USD
CY2018Q3	us-gaap	Revenues Revenues	242481000	USD
CY2018Q4	us-gaap	Revenues Revenues	232022000	USD
CY2018	us-gaap	Revenues Revenues	972410000	USD
CY2016	us-gaap	Share Based Compensation ShareBasedCompensation	7629000	USD
CY2017	us-gaap	Share Based Compensation ShareBasedCompensation	7877000	USD
CY2018	us-gaap	Share Based Compensation ShareBasedCompensation	8550000	USD
CY2016	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	34799000	USD
CY2018	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	373593000	USD
CY2017Q4	us-gaap	Stockholders Equity StockholdersEquity	1663144000	USD
CY2018Q4	us-gaap	Stockholders Equity StockholdersEquity	1699419000	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
CY2018Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	1763641000	USD
CY2016	us-gaap	Stockholders Equity Other StockholdersEquityOther	-3323000	USD
CY2017	us-gaap	Stockholders Equity Other StockholdersEquityOther	-271000	USD
CY2018	us-gaap	Stockholders Equity Other StockholdersEquityOther	-152000	USD
CY2018Q4	us-gaap	Tax Credit Carryforward Amount TaxCreditCarryforwardAmount	67500000	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
CY2018Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	2618000	USD
CY2018	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	200000	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
CY2018	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	156053000	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
CY2018	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	155866000	shares
CY2018	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 2017 and 2016 consolidated financial statements have been reclassified to conform to the current presentation. We have also reclassified certain items on our consolidated statements of operations to comply with the SEC disclosure amendments summarized below.</font></div></div>
CY2018	us-gaap	Revenue Recognition Leases Operating RevenueRecognitionLeasesOperating	<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;">Revenue from Leases</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;">Our apartment communities have operating leases with apartment residents with terms averaging </font><font style="font-family:inherit;font-size:10pt;">13</font><font style="font-family:inherit;font-size:10pt;"> months. We recognize rental revenue related to these leases, net of any concessions, on a straight-line basis over the term of the lease. Our operating leases with residents also provide that the resident reimburse us for certain costs, primarily the resident’s share of utilities expenses, incurred by the apartment community. These reimbursements are variable payments pursuant to the related lease and recognized as income when the utility expense is incurred. Reimbursement and related expense are presented on a gross basis in our consolidated statements of operations, with the reimbursement included in rental and other property revenues on our consolidated statements of operations.</font></div></div>
CY2018	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>

Files In Submission

Name	View Source	Status
0000922864-19-000007-index-headers.html	Edgar Link	pending
0000922864-19-000007-index.html	Edgar Link	pending
0000922864-19-000007.txt	Edgar Link	pending
0000922864-19-000007-xbrl.zip	Edgar Link	pending
a201810-k.htm	Edgar Link	pending
aiv-20181231.xml	Edgar Link	completed
aiv-20181231.xsd	Edgar Link	pending
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aiv-20181231_def.xml	Edgar Link	unprocessable
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2018 Form 10-K Financial Statement

#000092286419000007 Filed on February 20, 2019

Income Statement

Balance Sheet

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Facts In Submission

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$AIV APARTMENT INVESTMENT & MANAGEMENT CO Stock $aiv

2018 Form 10-K Financial Statement

#000092286419000007 Filed on February 20, 2019

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$AIV
APARTMENT INVESTMENT & MANAGEMENT CO Stock $aiv