Intangibles - Narrative (Details) - USD ($)	3 Months Ended		12 Months Ended
	Sep. 30, 2021	Jun. 30, 2021	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Finite-Lived Intangible Assets [Line Items]
Weighted average remaining amortization period in years			5 years	6 years
Weighted average remaining amortization period in years			7 years	8 years
Goodwill			$ 18,000,000	$ 18,000,000
Goodwill, impairment loss			$ 0	0	$ 0
Other Property
Finite-Lived Intangible Assets [Line Items]
Weighted average remaining amortization period in years			11 years
Held-for-sale
Finite-Lived Intangible Assets [Line Items]
Goodwill				0
Goodwill, impairment loss	$ 22,000,000	$ 7,000,000		29,000,000
Brookedale MTCA
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets acquired			$ 7,000,000	109,000,000
Intangible liabilities acquired			$ 6,000,000	$ 57,000,000
Weighted average remaining amortization period in years			7 years	9 years
Weighted average remaining amortization period in years				9 years