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Acquisitions and Other Significant Transactions (Details) (USD $) | 0 Months Ended | 1 Months Ended | 12 Months Ended |
--- | --- | --- | --- | ---
Jun. 04, 2013 Child | Aug. 31, 2014 Entity Member Unit Representative Community Property | Jul. 31, 2014 Community | Dec. 31, 2014 Community | Dec. 31, 2013 Community | Dec. 31, 2012 | Jul. 30, 2014
Business Acquisition [Line Items] |  |  |  |  |  |  |
Percentage of voting interests acquired |  |  | 100.00%us-gaap_BusinessAcquisitionPercentageOfVotingInterestsAcquired |  |  |  |
Number of communities operated under long-term leases |  |  |  | 583 bkd_NumberOfCommunitiesOperatedUnderLongTermLeases | 329 bkd_NumberOfCommunitiesOperatedUnderLongTermLeases |  |
Aggregate acquisition-date fair value of purchase consideration transferred |  |  | $ 3,000,000,000 us-gaap_BusinessCombinationConsiderationTransferred1 |  |  |  |
Amount of mortgage indebtedness assumed |  |  | 1,400,000,000 us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilitiesLongTermDebt |  |  |  |
Number of underlying communities with which mortgage loans collateralized |  |  | 179 bkd_NumberOfUnderlyingCommunitiesWithWhichMortgageLoansCollateralized |  |  |  |
Transaction costs of acquisition |  |  |  | 66,949,000 us-gaap_BusinessCombinationAcquisitionRelatedCosts | 3,921,000 us-gaap_BusinessCombinationAcquisitionRelatedCosts | 0 us-gaap_BusinessCombinationAcquisitionRelatedCosts |
Common stock, shares authorized (in shares) |  |  |  | 400,000,000 us-gaap_CommonStockSharesAuthorized | 200,000,000 us-gaap_CommonStockSharesAuthorized |  | 400 us-gaap_CommonStockSharesAuthorized
Number of venture transactions entered by the entity |  | 2 bkd_NumberOfVentureTransactionsEnteredByEntity |  |  |  |  |
Term of master agreement |  | 15 years |  |  |  |  |
Percentage of interest acquired in joint venture (in hundredths) |  | 51.00%bkd_PercentageOfInterestAcquiredInJointVenture |  |  |  |  |
Partners Joint Venture Ownership Percentage (in hundredths) |  | 49.00%bkd_PartnersJointVentureOwnershipPercentage |  |  |  |  |
Number of wholly-owned entities contributed to the venture by the entity |  | 8 bkd_NumberOfWhollyOwnedEntitiesContributedToTheVentureByEntity |  |  |  |  |
Number of communities owned by the entity |  | 8 bkd_NumberOfCommunitiesOwnedByEntity |  |  |  |  |
Number of wholly-owned entities contributed to the venture by venture partner |  | 3 bkd_NumberOfWhollyOwnedEntitiesContributedToTheVentureByVenturePartner |  |  |  |  |
Number of properties owned by venture partner |  | 3 bkd_NumberOfPropertiesOwnedByVenturePartner |  |  |  |  |
Number of communities owned by venture partner |  | 2 bkd_NumberOfCommunitiesOwnedByVenturePartner |  |  |  |  |
Number of Communities Deconsolidated |  |  |  | 10 bkd_NumberOfCommunitiesDeconsolidated |  |  |
Cash contributed to venture by venture partner |  | 323,500,000 bkd_CashContributedToVentureByVenturePartner |  |  |  |  |
Number of members on board |  | 6 bkd_NumberOfMembersOnBoard |  |  |  |  |
Number of representatives on board |  | 3 bkd_NumberOfRepresentativesOnBoard |  |  |  |  |
Number of communities under master lease and security agreement |  | 112 bkd_NumberOfCommunitiesUnderMasterLeaseAndSecurityAgreement |  |  |  |  |
Number of communities under triple net leases agreement |  | 41 bkd_NumberOfCommunitiesUnderTripleNetLeasesAgreement |  |  |  |  |
Number of pools under amended master leases agreement |  | 3 bkd_NumberOfPoolsUnderAmendedMasterLeasesAgreement |  |  |  |  |
Master leases term for Pool one communities |  | 14 years |  |  |  |  |
Master leases term for Pool two communities |  | 15 years |  |  |  |  |
Master leases term for Pool three communities |  | 16 years |  |  |  |  |
Number of extension options |  | 2 bkd_NumberOfExtensionOptions |  |  |  |  |
Term of extension option |  | 10 years |  |  |  |  |
Base rent as per amended master leases agreement |  | 158,000,000 bkd_BaseRentAsPerAmendedMasterLeasesAgreement |  |  |  |  |
Maximum available reimbursement for capital expenditures by co venturer |  | 100,000,000 bkd_MaximumAvailableReimbursementForCapitalExpendituresByCoVenturer |  |  |  |  |
Initial lease rate for lessor reimbursements for capital expenditures (in hundredths) |  | 7.00%bkd_InitialLeaseRateForLessorReimbursementsForCapitalExpenditures |  |  |  |  |
Number of communities for which purchase option included in master lease |  | 10 bkd_NumberOfCommunitiesForWhichPurchaseOptionIncludedInMasterLease |  |  |  |  |
Maximum aggregate purchase price of communities under purchase option |  | 60,000,000 bkd_MaximumAggregatePurchasePriceOfCommunitiesUnderPurchaseOption |  |  |  |  |
Number Of Communities With Cancelled Purchase Options |  | 49 bkd_NumberOfCommunitiesWithCancelledPurchaseOptions |  |  |  |  |
Number of communities with modified term |  | 20 bkd_NumberOfCommunitiesWithModifiedTerm |  |  |  |  |
Number of communities purchased or sold |  |  |  | 4 bkd_NumberOfCommunitiesPurchasedOrSold |  |  |
Income (Loss) of acquired business |  |  |  | 128,200,000 us-gaap_IncomeLossFromContinuingOperations |  |  |
Extinguishment of Debt, Amount |  |  |  | 275,900,000 us-gaap_ExtinguishmentOfDebtAmount |  |  |
Preliminary Allocation of Purchase Price [Abstract] |  |  |  |  |  |  |
Goodwill acquired during period |  |  |  | 639,292,000 us-gaap_GoodwillAcquiredDuringPeriod |  |  |
Pro-forma consolidated operational data [Abstract] |  |  |  |  |  |  |
Total revenue |  |  |  | 5,055,000,000 us-gaap_BusinessAcquisitionsProFormaRevenue | 4,853,000,000 us-gaap_BusinessAcquisitionsProFormaRevenue |  |
Net loss attributable to common shares |  |  |  | (103,000,000)us-gaap_BusinessAcquisitionsProFormaNetIncomeLoss | (424,000,000)us-gaap_BusinessAcquisitionsProFormaNetIncomeLoss |  |
Basic and diluted net loss per share attributable to common shares |  |  |  | $ (0.59)bkd_BusinessAcquisitionProFormaEarningsPerShareBasicAndDiluted | $ (2.48)bkd_BusinessAcquisitionProFormaEarningsPerShareBasicAndDiluted |  |
Weighted average shares used in computing basic and diluted net loss per share (in shares) |  |  |  | 175,823 bkd_BusinessAcquisitionsProFormaWeightedAverageNumberOfShareOutstandingBasicAndDiluted | 171,255 bkd_BusinessAcquisitionsProFormaWeightedAverageNumberOfShareOutstandingBasicAndDiluted |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |
Number of adult children of Joan Boice | 3 bkd_NumberOfChildrenOfDeceased |  |  |  |  |  |
Attorney fees awarded to plaintiffs' lawyer | 4,100,000 us-gaap_LitigationSettlementExpense |  |  |  |  |  |
Cash deposit made to collateralize the bond | 20,900,000 us-gaap_OtherRestrictedAssetsCurrent |  |  |  |  |  |
Stockholders' Equity Note [Abstract] |  |  |  |  |  |  |
Stock Issued During Period, Shares, New Issues |  |  |  | 10,298,506 us-gaap_StockIssuedDuringPeriodSharesNewIssues |  |  |
Proceeds from public equity offering, net |  |  |  | 330,386,000 us-gaap_ProceedsFromIssuanceOfCommonStock | 0 us-gaap_ProceedsFromIssuanceOfCommonStock | 0 us-gaap_ProceedsFromIssuanceOfCommonStock |
Deferred Offering Costs |  |  |  | 400,000 us-gaap_DeferredOfferingCosts |  |  |
Weighted average interest rate |  |  |  | 5.50%us-gaap_LongtermDebtWeightedAverageInterestRate |  |  |
Extinguishment of Debt, Amount |  |  |  | 275,900,000 us-gaap_ExtinguishmentOfDebtAmount |  |  |
Common stock issued in connection with Emeritus acquisition |  |  |  | 1,648,782,000 us-gaap_StockIssuedDuringPeriodValueAcquisitions |  |  |
Stock Issued During Period, Shares, Acquisitions |  |  |  | 47,584,000 us-gaap_StockIssuedDuringPeriodSharesAcquisitions |  |  |
Punitive damages [Member] |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |
Damages to be paid | 23,000,000 us-gaap_LossContingencyDamagesAwardedValue / us-gaap_LossContingenciesByNatureOfContingencyAxis = bkd_PunitiveDamagesMember |  |  |  |  |  |
Compensatory damages [Member] |  |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |  |
Damages to be paid | 250,000 us-gaap_LossContingencyDamagesAwardedValue / us-gaap_LossContingenciesByNatureOfContingencyAxis = bkd_CompensatoryDamagesMember |  |  |  |  |  |
CCRCs JV [Member] |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Number of communities purchased or sold |  | 4 bkd_NumberOfCommunitiesPurchasedOrSold / bkd_JointVentureAxis = bkd_CcrcsJvMember |  |  |  |  |
RIDEA JV [Member] |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Percentage of interest acquired in joint venture (in hundredths) |  | 20.00%bkd_PercentageOfInterestAcquiredInJointVenture / bkd_JointVentureAxis = bkd_RideaJvMember |  |  |  |  |
Partners Joint Venture Ownership Percentage (in hundredths) |  | 80.00%bkd_PartnersJointVentureOwnershipPercentage / bkd_JointVentureAxis = bkd_RideaJvMember |  |  |  |  |
Advance from co venturers affiliate |  | 68,000,000 bkd_AdvanceFromCoVenturersAffiliate / bkd_JointVentureAxis = bkd_RideaJvMember |  |  |  |  |
Number of communities contributed by venture partner |  | 49 bkd_NumberOfCommunitiesContributedByVenturePartner / bkd_JointVentureAxis = bkd_RideaJvMember |  |  |  |  |
Lease restructuring fee payable to co venturer |  | 34,000,000 bkd_LeaseRestructuringFeePayableToCoVenturer / bkd_JointVentureAxis = bkd_RideaJvMember |  |  |  |  |
Period with in which lease restructuring fee payable |  | 2 years |  |  |  |  |
Extinguishment of Debt, Amount |  |  |  | 68,000,000 us-gaap_ExtinguishmentOfDebtAmount / bkd_JointVentureAxis = bkd_RideaJvMember |  |  |
Stockholders' Equity Note [Abstract] |  |  |  |  |  |  |
Extinguishment of Debt, Amount |  |  |  | 68,000,000 us-gaap_ExtinguishmentOfDebtAmount / bkd_JointVentureAxis = bkd_RideaJvMember |  |  |
Minimum [Member] |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Weighted average interest rate (in hundredths) |  |  | 5.49%us-gaap_DebtWeightedAverageInterestRate / us-gaap_RangeAxis = us-gaap_MinimumMember |  |  |  |
Debt maturity period |  |  | 3 months |  |  |  |
Maximum [Member] |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Weighted average interest rate (in hundredths) |  |  | 6.06%us-gaap_DebtWeightedAverageInterestRate / us-gaap_RangeAxis = us-gaap_MaximumMember |  |  |  |
Debt maturity period |  |  | 33 years |  |  |  |
Retirement Centers [Member] |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Number of communities purchased or sold |  |  | 3 bkd_NumberOfCommunitiesPurchasedOrSold / us-gaap_StatementBusinessSegmentsAxis = bkd_RetirementCentersMember |  |  |  |
Preliminary Allocation of Purchase Price [Abstract] |  |  |  |  |  |  |
Goodwill acquired during period |  |  |  | 20,499,000 us-gaap_GoodwillAcquiredDuringPeriod / us-gaap_StatementBusinessSegmentsAxis = bkd_RetirementCentersMember |  |  |
Assisted Living [Member] |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Number of communities purchased or sold |  |  | 1 bkd_NumberOfCommunitiesPurchasedOrSold / us-gaap_StatementBusinessSegmentsAxis = bkd_AssistedLivingMember |  |  |  |
Preliminary Allocation of Purchase Price [Abstract] |  |  |  |  |  |  |
Goodwill acquired during period |  |  |  | 491,983,000 us-gaap_GoodwillAcquiredDuringPeriod / us-gaap_StatementBusinessSegmentsAxis = bkd_AssistedLivingMember |  |  |
Brookdale Ancillary Services [Member] |  |  |  |  |  |  |
Preliminary Allocation of Purchase Price [Abstract] |  |  |  |  |  |  |
Goodwill acquired during period |  |  |  | 126,810,000 us-gaap_GoodwillAcquiredDuringPeriod / us-gaap_StatementBusinessSegmentsAxis = bkd_BrookdaleAncillaryServicesMember |  |  |
Emeritus [Member] |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Number of communities operated |  |  | 493 bkd_NumberOfCommunitiesOperated / us-gaap_BusinessAcquisitionAxis = bkd_EmeritusMember |  |  |  |
Number of communities operated under long-term leases |  |  | 311 bkd_NumberOfCommunitiesOperatedUnderLongTermLeases / us-gaap_BusinessAcquisitionAxis = bkd_EmeritusMember |  |  |  |
Transaction costs of acquisition |  |  |  | 57,100,000 us-gaap_BusinessCombinationAcquisitionRelatedCosts / us-gaap_BusinessAcquisitionAxis = bkd_EmeritusMember |  |  |
Number of communities owned by the entity |  |  | 182 bkd_NumberOfCommunitiesOwnedByEntity / us-gaap_BusinessAcquisitionAxis = bkd_EmeritusMember |  |  |  |
Revenue of acquired business |  |  |  | 785,500,000 us-gaap_SalesRevenueNet / us-gaap_BusinessAcquisitionAxis = bkd_EmeritusMember |  |  |
Preliminary Allocation of Purchase Price [Abstract] |  |  |  |  |  |  |
Cash and cash equivalents |  |  |  | 28,000,000 us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCashAndEquivalents / us-gaap_BusinessAcquisitionAxis = bkd_EmeritusMember |  |  |
Property, plant and equipment and leasehold intangibles |  |  |  | 5,506,000,000 us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment / us-gaap_BusinessAcquisitionAxis = bkd_EmeritusMember |  |  |
Other intangible assets, net |  |  |  | 259,000,000 us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill / us-gaap_BusinessAcquisitionAxis = bkd_EmeritusMember |  |  |
Other assets, net |  |  |  | 308,000,000 bkd_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherAssets / us-gaap_BusinessAcquisitionAxis = bkd_EmeritusMember |  |  |
Trade Accounts Payable and accrued expenses |  |  |  | (297,000,000)us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesAccountsPayable / us-gaap_BusinessAcquisitionAxis = bkd_EmeritusMember |  |  |
Long-term debt |  |  |  | (1,516,000,000)bkd_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilitiesLongTermDebt / us-gaap_BusinessAcquisitionAxis = bkd_EmeritusMember |  |  |
Capital and Financing Lease obligations |  |  |  | (2,692,000,000)us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCapitalLeaseObligation / us-gaap_BusinessAcquisitionAxis = bkd_EmeritusMember |  |  |
Deferred tax liability |  |  |  | (337,000,000)us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedDeferredTaxLiabilitiesNoncurrent / us-gaap_BusinessAcquisitionAxis = bkd_EmeritusMember |  |  |
Other liabilities |  |  |  | (248,000,000)bkd_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOther / us-gaap_BusinessAcquisitionAxis = bkd_EmeritusMember |  |  |
Noncontrolling interest |  |  |  | (1,000,000)us-gaap_BusinessCombinationAcquisitionOfLessThan100PercentNoncontrollingInterestFairValue / us-gaap_BusinessAcquisitionAxis = bkd_EmeritusMember |  |  |
Fair value of Brookdale common stock issued |  |  |  | 1,649,000,000 us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedLessNoncontrollingInterest / us-gaap_BusinessAcquisitionAxis = bkd_EmeritusMember |  |  |
Acquisition of Communities [Member] |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Number of communities purchased or sold |  |  | 4 bkd_NumberOfCommunitiesPurchasedOrSold / us-gaap_BusinessAcquisitionAxis = bkd_AcquisitionOfCommunitiesMember |  |  |  |
Aggregate purchase price |  |  | 51,400,000 us-gaap_PaymentsToAcquireBusinessesAndInterestInAffiliates / us-gaap_BusinessAcquisitionAxis = bkd_AcquisitionOfCommunitiesMember |  |  |  |
Acquisition purchase price amount financed |  |  | 17,000,000 bkd_AcquisitionPurchasePriceAmountFinanced / us-gaap_BusinessAcquisitionAxis = bkd_AcquisitionOfCommunitiesMember |  |  |  |
Number of communities securing acquisition financing |  |  | 3 bkd_NumberOfCommunitiesSecuringAcquisitionFinancing / us-gaap_BusinessAcquisitionAxis = bkd_AcquisitionOfCommunitiesMember |  |  |  |
Communities agreed to purchase under HCP Master Lease Purchase Option [Member] |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Aggregate purchase price |  |  |  | $ 60,000,000 us-gaap_PaymentsToAcquireBusinessesAndInterestInAffiliates / us-gaap_BusinessAcquisitionAxis = bkd_CommunitiesAgreedToPurchaseUnderHCPMasterLeasePurchaseOptionMember |  |  |
Pro-forma consolidated operational data [Abstract] |  |  |  |  |  |  |
Number of facilities purchased or sold |  |  |  | 9 bkd_NumberOfFacilitiesPurchasedOrSold / us-gaap_BusinessAcquisitionAxis = bkd_CommunitiesAgreedToPurchaseUnderHCPMasterLeasePurchaseOptionMember |  |  |
Acquired property plant and equipment [Member] | Minimum [Member] |  |  |  |  |  |  |
Pro-forma consolidated operational data [Abstract] |  |  |  |  |  |  |
Fair Value Inputs, Cap Rate |  |  | 5.50%us-gaap_FairValueInputsCapRate / us-gaap_BusinessAcquisitionAxis = bkd_AcquiredPropertyPlantAndEquipmentMember / us-gaap_RangeAxis = us-gaap_MinimumMember |  |  |  |
Acquired property plant and equipment [Member] | Maximum [Member] |  |  |  |  |  |  |
Pro-forma consolidated operational data [Abstract] |  |  |  |  |  |  |
Fair Value Inputs, Cap Rate |  |  | 9.75%us-gaap_FairValueInputsCapRate / us-gaap_BusinessAcquisitionAxis = bkd_AcquiredPropertyPlantAndEquipmentMember / us-gaap_RangeAxis = us-gaap_MaximumMember |  |  |  |
Acquired capital and financing lease obligations [Member] | Minimum [Member] |  |  |  |  |  |  |
Pro-forma consolidated operational data [Abstract] |  |  |  |  |  |  |
Fair Value Inputs, Cap Rate |  |  | 6.00%us-gaap_FairValueInputsCapRate / us-gaap_BusinessAcquisitionAxis = bkd_AcquiredCapitalAndFinancingLeaseObligationsMember / us-gaap_RangeAxis = us-gaap_MinimumMember |  |  |  |
Acquired capital and financing lease obligations [Member] | Maximum [Member] |  |  |  |  |  |  |
Pro-forma consolidated operational data [Abstract] |  |  |  |  |  |  |
Fair Value Inputs, Cap Rate |  |  | 10.75%us-gaap_FairValueInputsCapRate / us-gaap_BusinessAcquisitionAxis = bkd_AcquiredCapitalAndFinancingLeaseObligationsMember / us-gaap_RangeAxis = us-gaap_MaximumMember |  |  |  |
Acquired long-term debt obligations [Member] | Minimum [Member] |  |  |  |  |  |  |
Pro-forma consolidated operational data [Abstract] |  |  |  |  |  |  |
Fair Value Inputs, Cap Rate |  |  | 3.00%us-gaap_FairValueInputsCapRate / us-gaap_BusinessAcquisitionAxis = bkd_AcquiredLongTermDebtObligationsMember / us-gaap_RangeAxis = us-gaap_MinimumMember |  |  |  |
Acquired long-term debt obligations [Member] | Maximum [Member] |  |  |  |  |  |  |
Pro-forma consolidated operational data [Abstract] |  |  |  |  |  |  |
Fair Value Inputs, Cap Rate |  |  | 7.00%us-gaap_FairValueInputsCapRate / us-gaap_BusinessAcquisitionAxis = bkd_AcquiredLongTermDebtObligationsMember / us-gaap_RangeAxis = us-gaap_MaximumMember |  |  |  |

X
- Definition This line item represents the amount financed out of purchase price by the entity. + References No definition available. + Details
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Namespace Prefix: | bkd_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition This line item represents the advance from co-venturer's affiliate. + References No definition available. + Details
Name: | bkd_AdvanceFromCoVenturersAffiliate
Namespace Prefix: | bkd_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition This line item represents the base rent as per amended master leases agreement. + References No definition available. + Details
Name: | bkd_BaseRentAsPerAmendedMasterLeasesAgreement
Namespace Prefix: | bkd_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The pro forma net income per share for a period as if the business combination or combinations had been completed at the beginning of a period. + References No definition available. + Details
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Namespace Prefix: | bkd_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition The pro forma average number of shares or units issued and outstanding that are used in calculating basic and diluted earnings per share (EPS). + References No definition available. + Details
Name: | bkd_BusinessAcquisitionsProFormaWeightedAverageNumberOfShareOutstandingBasicAndDiluted
Namespace Prefix: | bkd_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of long-term debt assumed at the acquisition date. + References No definition available. + Details
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Namespace Prefix: | bkd_
Data Type: | xbrli:monetaryItemType
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Period Type: | instant

X
- Definition Amount of other liabilities assumed at the acquisition date. + References No definition available. + Details
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Namespace Prefix: | bkd_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
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- Definition Amount of other assets acquired at the acquisition date. + References No definition available. + Details
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Namespace Prefix: | bkd_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
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X
- Definition This line item represents the cash contributed to the venture by venture partner during the period. + References No definition available. + Details
Name: | bkd_CashContributedToVentureByVenturePartner
Namespace Prefix: | bkd_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The initial lease rate for reimbursements available from the lessor for capital expenditures completed by the lessee on leased communities. + References No definition available. + Details
Name: | bkd_InitialLeaseRateForLessorReimbursementsForCapitalExpenditures
Namespace Prefix: | bkd_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition This line item represents the lease restructuring fee payable to co-venturer. + References No definition available. + Details
Name: | bkd_LeaseRestructuringFeePayableToCoVenturer
Namespace Prefix: | bkd_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition This line item represents the master leases term for Pool one communities under amended agreement. + References No definition available. + Details
Name: | bkd_MasterLeasesTermForPoolOneCommunities
Namespace Prefix: | bkd_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition This line item represents the master leases term for Pool three communities under amended agreement. + References No definition available. + Details
Name: | bkd_MasterLeasesTermForPoolThreeCommunities
Namespace Prefix: | bkd_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition This line item represents the master leases term for Pool two communities under amended agreement. + References No definition available. + Details
Name: | bkd_MasterLeasesTermForPoolTwoCommunities
Namespace Prefix: | bkd_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition This line item represents the maximum aggregate purchase price of communities under purchase option. + References No definition available. + Details
Name: | bkd_MaximumAggregatePurchasePriceOfCommunitiesUnderPurchaseOption
Namespace Prefix: | bkd_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition This line item represents the maximum available reimbursement for capital expenditures by co-venturer during the period. + References No definition available. + Details
Name: | bkd_MaximumAvailableReimbursementForCapitalExpendituresByCoVenturer
Namespace Prefix: | bkd_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition This line item represents the number of adult children of deceased. + References No definition available. + Details
Name: | bkd_NumberOfChildrenOfDeceased
Namespace Prefix: | bkd_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition This line item represents the number of communities contributed by venture partner. + References No definition available. + Details
Name: | bkd_NumberOfCommunitiesContributedByVenturePartner
Namespace Prefix: | bkd_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

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- Definition This line item represents the number of communities deconsolidated from the Company. + References No definition available. + Details
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- Definition This line item represents the number of communities securing acquisition financing. + References No definition available. + Details
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- Definition This line item represents the number of communities under triple net leases agreement. + References No definition available. + Details
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- Definition This line item represents the number of pools under amended master leases agreement. + References No definition available. + Details
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- Definition This line item represents the number of underlying communities with which mortgage loans are collateralized. + References No definition available. + Details
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- Definition Amount of capital lease obligation, assumed at the acquisition date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6910749&loc=d3e4845-128472 + Details
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- Definition Amount of liabilities incurred for goods and services received that are used in an entity's business and related party payables, assumed at the acquisition date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6910749&loc=d3e4845-128472 + Details
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- Definition Amount of deferred tax liability attributable to taxable temporary differences due after one year or the normal operating cycle, if longer, assumed at the acquisition date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6910749&loc=d3e4845-128472 + Details
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