Loans Receivable - Narrative (Details) $ in Thousands, £ in Millions	12 Months Ended
	Dec. 31, 2021 USD ($) property	Dec. 31, 2020 USD ($)	Dec. 31, 2022 USD ($)	Dec. 31, 2021 GBP (£) property
Financing Receivable, Troubled Debt Restructuring [Line Items]
Other liabilities	$ 26,659		$ 22,878
Non-real estate loans	375,060		441,231
Allowance for credit loss	151,433		152,063
Real estate loans receivable, net of credit allowance	$ 1,068,681		890,844
Provision for loan losses, net		$ 88,201
Provision for loan losses		$ 88,201
Triple-net
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of real estate properties | property	51			51
Safanad
Financing Receivable, Troubled Debt Restructuring [Line Items]
Real estate loans receivable, net of credit allowance	$ 750,330			£ 540
Working capital facility | £				£ 30
Term of receivable	5 years
HC-One Group (5)
Financing Receivable, Troubled Debt Restructuring [Line Items]
Real estate loans receivable, net of credit allowance	$ 167,000		$ 168,949
Termination fee	86,000
Decrease in indebtedness	$ 170,000