Loans Receivable - 2022 Loans Receivable Transactions (Details) - Secured Mortgage Loans $ in Millions	1 Months Ended
	May 31, 2023 loan	Apr. 30, 2023 loan	Feb. 28, 2023 loan	Dec. 31, 2022 USD ($) loan	Nov. 30, 2022 USD ($) loan	May 31, 2022 USD ($) loan	May 31, 2021 USD ($) loan
Other
Loans Receivable:
Secured loan | loan	1	1	1	4	1	1	1
Principal repayments received					$ 1	$ 2	$ 10
Outstanding balance				$ 61
Loans receivable, term				1 year
Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate, First Six Months
Loans Receivable:
Variable rate			6.00%
Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate, First Six Months | Other
Loans Receivable:
Variable rate				8.50%
Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate, Last Six Months
Loans Receivable:
Variable rate			7.00%
Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate, Last Six Months | Other
Loans Receivable:
Variable rate				10.50%