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Leases Leases - Narrative (Details) - USD ($) | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2019 | Jun. 30, 2018 | Jun. 30, 2019 | Jun. 30, 2018
Lessee, Lease, Description [Line Items] |  |  |  |
Sale leaseback transaction, net proceeds, investing activities | $ 0 |  | $ 5,000,000 |
Sale leaseback transaction, net proceeds, investing activities |  | $ 0 |  | $ 0
Store rationalization charges | $ 0 | $ 0 | $ 135,000,000 | $ 0
Building | Minimum |  |  |  |
Lessee, Lease, Description [Line Items] |  |  |  |
Lease term | 15 years |  | 15 years |
Building | Maximum |  |  |  |
Lessee, Lease, Description [Line Items] |  |  |  |
Lease term | 25 years |  | 25 years |
Equipment and other assets | Minimum |  |  |  |
Lessee, Lease, Description [Line Items] |  |  |  |
Lease term | 3 years |  | 3 years |
Equipment and other assets | Maximum |  |  |  |
Lessee, Lease, Description [Line Items] |  |  |  |
Lease term | 10 years |  | 10 years |
Retail Long-Term Care Segment |  |  |  |
Lessee, Lease, Description [Line Items] |  |  |  |
Store rationalization charges |  |  | $ 135,000,000 |

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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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- Definition Term of lessee's operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=77888426&loc=SL77918673-209980 + Details
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- Definition Amount of gain (loss) on sale and leaseback transaction from transfer of asset accounted for as sale. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 40 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=77888430&loc=SL77919786-209982 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 55 -Paragraph 53 -URI http://asc.fasb.org/extlink&oid=77888399&loc=SL77918982-209971 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=77888426&loc=SL77918686-209980 + Details
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- Definition Amount of cash inflow after closing and debt issuance costs received by a seller-lessee in a sale-leaseback recognized in investing activities. + References Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 40 -Section 55 -Paragraph 50 -URI http://asc.fasb.org/extlink&oid=82846721&loc=d3e51831-112757 Reference 2: http://fasb.org/us-gaap/role/ref/otherTransitionRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 40 -Section 55 -Paragraph 52 -URI http://asc.fasb.org/extlink&oid=82846721&loc=d3e51843-112757 Reference 3: http://fasb.org/us-gaap/role/ref/otherTransitionRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 40 -Section 55 -Paragraph 51 -URI http://asc.fasb.org/extlink&oid=82846721&loc=d3e51840-112757 + Details
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