3.19.3.a.u2 html 661 575 1 false 303 0 false 19 false false R1.htm 0001000 - Document - Cover Sheet http://www.americancampus.com/role/Cover Cover Cover 1 false false R2.htm 1001000 - Statement - CONSOLIDATED BALANCE SHEETS Sheet http://www.americancampus.com/role/ConsolidatedBalanceSheets CONSOLIDATED BALANCE SHEETS Statements 2 false false R3.htm 1001501 - Statement - CONSOLIDATED BALANCE SHEETS (Parenthetical) Sheet http://www.americancampus.com/role/ConsolidatedBalanceSheetsParenthetical CONSOLIDATED BALANCE SHEETS (Parenthetical) Statements 3 false false R4.htm 1002000 - Statement - CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME Sheet http://www.americancampus.com/role/ConsolidatedStatementsOfComprehensiveIncome CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME Statements 4 false false R5.htm 1003000 - Statement - CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY/ CAPITAL Sheet http://www.americancampus.com/role/ConsolidatedStatementsOfChangesInEquityCapital CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY/ CAPITAL Statements 5 false false R6.htm 1004000 - Statement - CONSOLIDATED STATEMENTS OF CASH FLOWS Sheet http://www.americancampus.com/role/ConsolidatedStatementsOfCashFlows CONSOLIDATED STATEMENTS OF CASH FLOWS Statements 6 false false R7.htm 2101100 - Disclosure - Organization and Description of Business Sheet http://www.americancampus.com/role/OrganizationAndDescriptionOfBusiness Organization and Description of Business Notes 7 false false R8.htm 2102100 - Disclosure - Summary of Significant Accounting Policies Sheet http://www.americancampus.com/role/SummaryOfSignificantAccountingPolicies Summary of Significant Accounting Policies Notes 8 false false R9.htm 2103100 - Disclosure - Earnings Per Share Sheet http://www.americancampus.com/role/EarningsPerShare Earnings Per Share Notes 9 false false R10.htm 2104100 - Disclosure - Income Taxes Sheet http://www.americancampus.com/role/IncomeTaxes Income Taxes Notes 10 false false R11.htm 2105100 - Disclosure - Acquisitions and Joint Venture Investments Sheet http://www.americancampus.com/role/AcquisitionsAndJointVentureInvestments Acquisitions and Joint Venture Investments Notes 11 false false R12.htm 2106100 - Disclosure - Property Dispositions Sheet http://www.americancampus.com/role/PropertyDispositions Property Dispositions Notes 12 false false R13.htm 2107100 - Disclosure - Investments in Real Estate Sheet http://www.americancampus.com/role/InvestmentsInRealEstate Investments in Real Estate Notes 13 false false R14.htm 2111100 - Disclosure - Noncontrolling Interests Sheet http://www.americancampus.com/role/NoncontrollingInterests Noncontrolling Interests Notes 14 false false R15.htm 2114100 - Disclosure - Debt Sheet http://www.americancampus.com/role/Debt Debt Notes 15 false false R16.htm 2115100 - Disclosure - Stockholders' Equity / Partners' Capital Sheet http://www.americancampus.com/role/StockholdersEquityPartnersCapital Stockholders' Equity / Partners' Capital Notes 16 false false R17.htm 2116100 - Disclosure - Incentive Award Plan Sheet http://www.americancampus.com/role/IncentiveAwardPlan Incentive Award Plan Notes 17 false false R18.htm 2117100 - Disclosure - Derivative Instruments and Hedging Activities Sheet http://www.americancampus.com/role/DerivativeInstrumentsAndHedgingActivities Derivative Instruments and Hedging Activities Notes 18 false false R19.htm 2118100 - Disclosure - Fair Value Disclosures Sheet http://www.americancampus.com/role/FairValueDisclosures Fair Value Disclosures Notes 19 false false R20.htm 2119100 - Disclosure - Lease Commitments Sheet http://www.americancampus.com/role/LeaseCommitments Lease Commitments Notes 20 false false R21.htm 2120100 - Disclosure - Commitments and Contingencies Sheet http://www.americancampus.com/role/CommitmentsAndContingencies Commitments and Contingencies Notes 21 false false R22.htm 2121100 - Disclosure - Segments Sheet http://www.americancampus.com/role/Segments Segments Notes 22 false false R23.htm 2122100 - Disclosure - Quarterly Financial Information (Unaudited) Sheet http://www.americancampus.com/role/QuarterlyFinancialInformationUnaudited Quarterly Financial Information (Unaudited) Notes 23 false false R24.htm 2123100 - Disclosure - Subsequent Events Sheet http://www.americancampus.com/role/SubsequentEvents Subsequent Events Notes 24 false false R25.htm 2124100 - Schedule - Schedule of Real Estate and Accumulated Depreciation Sheet http://www.americancampus.com/role/ScheduleOfRealEstateAndAccumulatedDepreciation Schedule of Real Estate and Accumulated Depreciation Uncategorized 25 false false R26.htm 2202201 - Disclosure - Summary of Significant Accounting Policies (Policies) Sheet http://www.americancampus.com/role/SummaryOfSignificantAccountingPoliciesPolicies Summary of Significant Accounting Policies (Policies) Notes 26 false false R27.htm 2302302 - Disclosure - Summary of Significant Accounting Policies (Tables) Sheet http://www.americancampus.com/role/SummaryOfSignificantAccountingPoliciesTables Summary of Significant Accounting Policies (Tables) Tables http://www.americancampus.com/role/SummaryOfSignificantAccountingPolicies 27 false false R28.htm 2303301 - Disclosure - Earnings Per Share (Tables) Sheet http://www.americancampus.com/role/EarningsPerShareTables Earnings Per Share (Tables) Tables http://www.americancampus.com/role/EarningsPerShare 28 false false R29.htm 2304301 - Disclosure - Income Taxes (Tables) Sheet http://www.americancampus.com/role/IncomeTaxesTables Income Taxes (Tables) Tables http://www.americancampus.com/role/IncomeTaxes 29 false false R30.htm 2305301 - Disclosure - Acquisitions and Joint Venture Investments (Tables) Sheet http://www.americancampus.com/role/AcquisitionsAndJointVentureInvestmentsTables Acquisitions and Joint Venture Investments (Tables) Tables http://www.americancampus.com/role/AcquisitionsAndJointVentureInvestments 30 false false R31.htm 2306301 - Disclosure - Property Dispositions (Tables) Sheet http://www.americancampus.com/role/PropertyDispositionsTables Property Dispositions (Tables) Tables http://www.americancampus.com/role/PropertyDispositions 31 false false R32.htm 2307301 - Disclosure - Investments in Real Estate (Tables) Sheet http://www.americancampus.com/role/InvestmentsInRealEstateTables Investments in Real Estate (Tables) Tables http://www.americancampus.com/role/InvestmentsInRealEstate 32 false false R33.htm 2311301 - Disclosure - Noncontrolling Interests (Tables) Sheet http://www.americancampus.com/role/NoncontrollingInterestsTables Noncontrolling Interests (Tables) Tables http://www.americancampus.com/role/NoncontrollingInterests 33 false false R34.htm 2314301 - Disclosure - Debt (Tables) Sheet http://www.americancampus.com/role/DebtTables Debt (Tables) Tables http://www.americancampus.com/role/Debt 34 false false R35.htm 2316301 - Disclosure - Incentive Award Plan (Tables) Sheet http://www.americancampus.com/role/IncentiveAwardPlanTables Incentive Award Plan (Tables) Tables http://www.americancampus.com/role/IncentiveAwardPlan 35 false false R36.htm 2317301 - Disclosure - Derivative Instruments and Hedging Activities (Tables) Sheet http://www.americancampus.com/role/DerivativeInstrumentsAndHedgingActivitiesTables Derivative Instruments and Hedging Activities (Tables) Tables http://www.americancampus.com/role/DerivativeInstrumentsAndHedgingActivities 36 false false R37.htm 2318301 - Disclosure - Fair Value Disclosures (Tables) Sheet http://www.americancampus.com/role/FairValueDisclosuresTables Fair Value Disclosures (Tables) Tables http://www.americancampus.com/role/FairValueDisclosures 37 false false R38.htm 2319301 - Disclosure - Lease Commitments (Tables) Sheet http://www.americancampus.com/role/LeaseCommitmentsTables Lease Commitments (Tables) Tables http://www.americancampus.com/role/LeaseCommitments 38 false false R39.htm 2321301 - Disclosure - Segments (Tables) Sheet http://www.americancampus.com/role/SegmentsTables Segments (Tables) Tables http://www.americancampus.com/role/Segments 39 false false R40.htm 2322301 - Disclosure - Quarterly Financial Information (Unaudited) (Tables) Sheet http://www.americancampus.com/role/QuarterlyFinancialInformationUnauditedTables Quarterly Financial Information (Unaudited) (Tables) Tables http://www.americancampus.com/role/QuarterlyFinancialInformationUnaudited 40 false false R41.htm 2401401 - Disclosure - Organization and Description of Business - Narrative (Details) Sheet http://www.americancampus.com/role/OrganizationAndDescriptionOfBusinessNarrativeDetails Organization and Description of Business - Narrative (Details) Details 41 false false R42.htm 2402403 - Disclosure - Summary of Significant Accounting Policies - Narrative (Details) Sheet http://www.americancampus.com/role/SummaryOfSignificantAccountingPoliciesNarrativeDetails Summary of Significant Accounting Policies - Narrative (Details) Details 42 false false R43.htm 2402404 - Disclosure - Summary of Significant Accounting Policies - Estimated Useful Lives of Assets (Details) Sheet http://www.americancampus.com/role/SummaryOfSignificantAccountingPoliciesEstimatedUsefulLivesOfAssetsDetails Summary of Significant Accounting Policies - Estimated Useful Lives of Assets (Details) Details 43 false false R44.htm 2403402 - Disclosure - Earnings Per Share - Potentially dilutive securities not included in calculating diluted earnings per share (Details) Sheet http://www.americancampus.com/role/EarningsPerSharePotentiallyDilutiveSecuritiesNotIncludedInCalculatingDilutedEarningsPerShareDetails Earnings Per Share - Potentially dilutive securities not included in calculating diluted earnings per share (Details) Details 44 false false R45.htm 2403403 - Disclosure - Earnings Per Share - Summary of Elements Used in Calculating Basic and Diluted Earnings per Share (Details) Sheet http://www.americancampus.com/role/EarningsPerShareSummaryOfElementsUsedInCalculatingBasicAndDilutedEarningsPerShareDetails Earnings Per Share - Summary of Elements Used in Calculating Basic and Diluted Earnings per Share (Details) Details 45 false false R46.htm 2403404 - Disclosure - Earnings Per Share - Summary of Elements Used in Calculating Basic and Diluted Earnings per Unit (Details) Sheet http://www.americancampus.com/role/EarningsPerShareSummaryOfElementsUsedInCalculatingBasicAndDilutedEarningsPerUnitDetails Earnings Per Share - Summary of Elements Used in Calculating Basic and Diluted Earnings per Unit (Details) Details 46 false false R47.htm 2404402 - Disclosure - Income Taxes - Narrative (Details) Sheet http://www.americancampus.com/role/IncomeTaxesNarrativeDetails Income Taxes - Narrative (Details) Details 47 false false R48.htm 2404403 - Disclosure - Income Taxes - Components of deferred tax assets and liabilities of TRSs (Details) Sheet http://www.americancampus.com/role/IncomeTaxesComponentsOfDeferredTaxAssetsAndLiabilitiesOfTrssDetails Income Taxes - Components of deferred tax assets and liabilities of TRSs (Details) Details 48 false false R49.htm 2404404 - Disclosure - Income Taxes - Components of income tax provision (Details) Sheet http://www.americancampus.com/role/IncomeTaxesComponentsOfIncomeTaxProvisionDetails Income Taxes - Components of income tax provision (Details) Details 49 false false R50.htm 2404405 - Disclosure - Income Taxes - Reconciliation of income tax attributable to continuing operations for TRSs (Details) Sheet http://www.americancampus.com/role/IncomeTaxesReconciliationOfIncomeTaxAttributableToContinuingOperationsForTrssDetails Income Taxes - Reconciliation of income tax attributable to continuing operations for TRSs (Details) Details 50 false false R51.htm 2404406 - Disclosure - Income Taxes - Tax treatment of distributions to shareholders (Details) Sheet http://www.americancampus.com/role/IncomeTaxesTaxTreatmentOfDistributionsToShareholdersDetails Income Taxes - Tax treatment of distributions to shareholders (Details) Details 51 false false R52.htm 2405402 - Disclosure - Acquisitions and Joint Venture Investments - Narrative (Details) Sheet http://www.americancampus.com/role/AcquisitionsAndJointVentureInvestmentsNarrativeDetails Acquisitions and Joint Venture Investments - Narrative (Details) Details 52 false false R53.htm 2405403 - Disclosure - Acquisitions and Joint Venture Investments - Schedule of Asset Acquisitions (Details) Sheet http://www.americancampus.com/role/AcquisitionsAndJointVentureInvestmentsScheduleOfAssetAcquisitionsDetails Acquisitions and Joint Venture Investments - Schedule of Asset Acquisitions (Details) Details 53 false false R54.htm 2406402 - Disclosure - Property Dispositions - Narrative (Details) Sheet http://www.americancampus.com/role/PropertyDispositionsNarrativeDetails Property Dispositions - Narrative (Details) Details 54 false false R55.htm 2406403 - Disclosure - Property Dispositions - Schedule of Property Dispositions (Details) Sheet http://www.americancampus.com/role/PropertyDispositionsScheduleOfPropertyDispositionsDetails Property Dispositions - Schedule of Property Dispositions (Details) Details 55 false false R56.htm 2407402 - Disclosure - Investments in Real Estate - Summary of properties (Details) Sheet http://www.americancampus.com/role/InvestmentsInRealEstateSummaryOfPropertiesDetails Investments in Real Estate - Summary of properties (Details) Details 56 false false R57.htm 2411402 - Disclosure - Noncontrolling Interests - Narrative (Details) Sheet http://www.americancampus.com/role/NoncontrollingInterestsNarrativeDetails Noncontrolling Interests - Narrative (Details) Details 57 false false R58.htm 2411403 - Disclosure - Noncontrolling Interests - Summarized Activity of Redeemable Limited Partners (Details) Sheet http://www.americancampus.com/role/NoncontrollingInterestsSummarizedActivityOfRedeemableLimitedPartnersDetails Noncontrolling Interests - Summarized Activity of Redeemable Limited Partners (Details) Details 58 false false R59.htm 2414402 - Disclosure - Debt - Summary of outstanding consolidated indebtedness (Details) Sheet http://www.americancampus.com/role/DebtSummaryOfOutstandingConsolidatedIndebtednessDetails Debt - Summary of outstanding consolidated indebtedness (Details) Details 59 false false R60.htm 2414403 - Disclosure - Debt - Mortgage and construction loans payable excluding premiums and discounts (Details) Sheet http://www.americancampus.com/role/DebtMortgageAndConstructionLoansPayableExcludingPremiumsAndDiscountsDetails Debt - Mortgage and construction loans payable excluding premiums and discounts (Details) Details 60 false false R61.htm 2414404 - Disclosure - Debt - Mortgage and construction loans payable transactions occurred (Details) Sheet http://www.americancampus.com/role/DebtMortgageAndConstructionLoansPayableTransactionsOccurredDetails Debt - Mortgage and construction loans payable transactions occurred (Details) Details 61 false false R62.htm 2414405 - Disclosure - Debt - Narrative (Details) Sheet http://www.americancampus.com/role/DebtNarrativeDetails Debt - Narrative (Details) Details 62 false false R63.htm 2414406 - Disclosure - Debt - Summary of Bonds payable (Details) Sheet http://www.americancampus.com/role/DebtSummaryOfBondsPayableDetails Debt - Summary of Bonds payable (Details) Details 63 false false R64.htm 2414407 - Disclosure - Debt - Summary of Unsecured Notes (Details) Notes http://www.americancampus.com/role/DebtSummaryOfUnsecuredNotesDetails Debt - Summary of Unsecured Notes (Details) Details 64 false false R65.htm 2414408 - Disclosure - Debt - Summary of Debt Maturities (Details) Sheet http://www.americancampus.com/role/DebtSummaryOfDebtMaturitiesDetails Debt - Summary of Debt Maturities (Details) Details 65 false false R66.htm 2415401 - Disclosure - Stockholders' Equity / Partners' Capital - Narrative (Details) Sheet http://www.americancampus.com/role/StockholdersEquityPartnersCapitalNarrativeDetails Stockholders' Equity / Partners' Capital - Narrative (Details) Details 66 false false R67.htm 2416402 - Disclosure - Incentive Award Plan - Narrative (Details) Sheet http://www.americancampus.com/role/IncentiveAwardPlanNarrativeDetails Incentive Award Plan - Narrative (Details) Details 67 false false R68.htm 2416403 - Disclosure - Incentive Award Plan - Summary of Restricted Stock Units (Details) Sheet http://www.americancampus.com/role/IncentiveAwardPlanSummaryOfRestrictedStockUnitsDetails Incentive Award Plan - Summary of Restricted Stock Units (Details) Details 68 false false R69.htm 2416404 - Disclosure - Incentive Award Plan - Summary of Restricted Stock Awards (Details) Sheet http://www.americancampus.com/role/IncentiveAwardPlanSummaryOfRestrictedStockAwardsDetails Incentive Award Plan - Summary of Restricted Stock Awards (Details) Details 69 false false R70.htm 2417402 - Disclosure - Derivative Instruments and Hedging Activities - Summary of Outstanding Interest Rate Swap Contracts (Details) Sheet http://www.americancampus.com/role/DerivativeInstrumentsAndHedgingActivitiesSummaryOfOutstandingInterestRateSwapContractsDetails Derivative Instruments and Hedging Activities - Summary of Outstanding Interest Rate Swap Contracts (Details) Details 70 false false R71.htm 2417403 - Disclosure - Derivative Instruments and Hedging Activities - Fair Value of Derivative Financial Instruments and Classification on Consolidated Balance Sheet (Details) Sheet http://www.americancampus.com/role/DerivativeInstrumentsAndHedgingActivitiesFairValueOfDerivativeFinancialInstrumentsAndClassificationOnConsolidatedBalanceSheetDetails Derivative Instruments and Hedging Activities - Fair Value of Derivative Financial Instruments and Classification on Consolidated Balance Sheet (Details) Details 71 false false R72.htm 2417404 - Disclosure - Derivative Instruments and Hedging Activities Narrative (Details) Sheet http://www.americancampus.com/role/DerivativeInstrumentsAndHedgingActivitiesNarrativeDetails Derivative Instruments and Hedging Activities Narrative (Details) Details http://www.americancampus.com/role/DerivativeInstrumentsAndHedgingActivitiesTables 72 false false R73.htm 2417405 - Disclosure - Derivative Instruments and Hedging Activities - Schedule of Effect of Derivative Financial Instruments On The Income Statement (Details) Sheet http://www.americancampus.com/role/DerivativeInstrumentsAndHedgingActivitiesScheduleOfEffectOfDerivativeFinancialInstrumentsOnIncomeStatementDetails Derivative Instruments and Hedging Activities - Schedule of Effect of Derivative Financial Instruments On The Income Statement (Details) Details 73 false false R74.htm 2418402 - Disclosure - Fair Value Disclosures - Financial instruments measured at fair value (Details) Sheet http://www.americancampus.com/role/FairValueDisclosuresFinancialInstrumentsMeasuredAtFairValueDetails Fair Value Disclosures - Financial instruments measured at fair value (Details) Details 74 false false R75.htm 2418403 - Disclosure - Fair Value Disclosures - Estimated fair value and related carrying amounts for mortgage loans and bonds payable (Details) Sheet http://www.americancampus.com/role/FairValueDisclosuresEstimatedFairValueAndRelatedCarryingAmountsForMortgageLoansAndBondsPayableDetails Fair Value Disclosures - Estimated fair value and related carrying amounts for mortgage loans and bonds payable (Details) Details 75 false false R76.htm 2419402 - Disclosure - Lease Commitments - Narrative (Details) Sheet http://www.americancampus.com/role/LeaseCommitmentsNarrativeDetails Lease Commitments - Narrative (Details) Details 76 false false R77.htm 2419403 - Disclosure - Lease Commitments - Schedule of lease cost (Details) Sheet http://www.americancampus.com/role/LeaseCommitmentsScheduleOfLeaseCostDetails Lease Commitments - Schedule of lease cost (Details) Details 77 false false R78.htm 2419404 - Disclosure - Lease Commitments - Future minimum commitments over life (Details) Sheet http://www.americancampus.com/role/LeaseCommitmentsFutureMinimumCommitmentsOverLifeDetails Lease Commitments - Future minimum commitments over life (Details) Details 78 false false R79.htm 2420401 - Disclosure - Commitments and Contingencies (Details) Sheet http://www.americancampus.com/role/CommitmentsAndContingenciesDetails Commitments and Contingencies (Details) Details http://www.americancampus.com/role/CommitmentsAndContingencies 79 false false R80.htm 2421402 - Disclosure - Segments - Narrative (Details) Sheet http://www.americancampus.com/role/SegmentsNarrativeDetails Segments - Narrative (Details) Details 80 false false R81.htm 2421403 - Disclosure - Segments - Schedule of Segment Information (Details) Sheet http://www.americancampus.com/role/SegmentsScheduleOfSegmentInformationDetails Segments - Schedule of Segment Information (Details) Details 81 false false R82.htm 2422402 - Disclosure - Quarterly Financial Information (Unaudited) (Details) Sheet http://www.americancampus.com/role/QuarterlyFinancialInformationUnauditedDetails Quarterly Financial Information (Unaudited) (Details) Details http://www.americancampus.com/role/QuarterlyFinancialInformationUnauditedTables 82 false false R83.htm 2423401 - Disclosure - Subsequent Events (Details) Sheet http://www.americancampus.com/role/SubsequentEventsDetails Subsequent Events (Details) Details http://www.americancampus.com/role/SubsequentEvents 83 false false R84.htm 2424401 - Schedule - Schedule of Real Estate and Accumulated Depreciation - Schedule of Real Estate Properties (Details) Sheet http://www.americancampus.com/role/ScheduleOfRealEstateAndAccumulatedDepreciationScheduleOfRealEstatePropertiesDetails Schedule of Real Estate and Accumulated Depreciation - Schedule of Real Estate Properties (Details) Details 84 false false R85.htm 2424402 - Schedule - Schedule of Real Estate and Accumulated Depreciation - Changes in investments in real estate and related accumulated depreciation (Details) Sheet http://www.americancampus.com/role/ScheduleOfRealEstateAndAccumulatedDepreciationChangesInInvestmentsInRealEstateAndRelatedAccumulatedDepreciationDetails Schedule of Real Estate and Accumulated Depreciation - Changes in investments in real estate and related accumulated depreciation (Details) Details 85 false false All Reports Book All Reports acc2019123110knew.htm acc-20191231.xsd acc-20191231_cal.xml acc-20191231_def.xml acc-20191231_lab.xml acc-20191231_pre.xml exhibit21112312019new.htm exhibit23112312019new.htm exhibit23212312019new.htm exhibit31112312019new.htm exhibit31212312019new.htm exhibit31312312019new.htm exhibit31412312019new.htm exhibit32112312019new.htm exhibit32212312019new.htm exhibit32312312019new.htm exhibit32412312019new.htm exhibit414.htm a12companyflowchart12312019.jpg http://fasb.org/srt/2019-01-31 http://fasb.org/us-gaap/2019-01-31 http://xbrl.sec.gov/dei/2019-01-31 true true