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Supplemental Balance Sheet Information - Narrative (Details) $ in Millions | Dec. 31, 2020 USD ($) | Dec. 31, 2019 USD ($) entryFee | Oct. 01, 2019 entryFee
--- | --- | --- | ---
Schedule of Investments [Line Items] |  |  |
Ownership Percentage | 50.00% |  |
CCRC Venture | CCRCs |  |  |
Schedule of Investments [Line Items] |  |  |
Number of entry fee | entryFee |  | 16 | 14
CCRC Venture Opco | HCP, Inc. |  |  |
Schedule of Investments [Line Items] |  |  |
Ownership Percentage |  | 49.00% |
CCRC Venture |  |  |
Schedule of Investments [Line Items] |  |  |
Ownership Percentage |  | 51.00% |
Equity method liability | $ | $ 10.1 | $ 66.2 |

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