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v3.20.1

Leases (Details) | 3 Months Ended
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Mar. 31, 2020 lease community
Leases [Abstract] |
Operating and financing leases, number of communities | community | 306
Operating leases, number of communities | 239
Financing leases, number of communities | 67
Minimum |
Lessee, Lease, Description [Line Items] |
Finance and operating lease, renewal term | 5 years
Maximum |
Lessee, Lease, Description [Line Items] |
Finance and operating lease, renewal term | 20 years

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- Definition Financing Leases, Number Of Communities + References No definition available. + Details
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Namespace Prefix: | bkd_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

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- Definition Lessee, Finance and Operating Lease, Renewal Term + References No definition available. + Details
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Namespace Prefix: | bkd_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

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- Definition Operating Leases, Number Of Communities + References No definition available. + Details
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Namespace Prefix: | bkd_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

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- Definition Operating and Financing Leases, Number Of Communities + References No definition available. + Details
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Namespace Prefix: | bkd_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

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- References No definition available. + Details
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Namespace Prefix: | us-gaap_
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Balance Type: | na
Period Type: | duration

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Details
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Namespace Prefix: |
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Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |