Loans Receivable - 2025 Loans Receivable Transactions (Details) - Secured Mortgage Loans $ in Millions		1 Months Ended							12 Months Ended
	Mar. 01, 2024 USD ($)	Jan. 31, 2025 USD ($) extension_option loan	Oct. 31, 2023 USD ($)	May 31, 2023 USD ($) loan	Apr. 30, 2023 USD ($) loan	Feb. 28, 2023 USD ($) loan	Dec. 31, 2022 USD ($) loan	May 31, 2022 loan	Dec. 31, 2024 USD ($)
Loans Receivable:
Outstanding balance	$ 89
Proceeds from the collection of loans receivable						$ 102
Other
Loans Receivable:
Outstanding balance							$ 61		$ 85
Secured loan | loan				1	1	1	4	1
Proceeds from the collection of loans receivable			$ 21	$ 21	$ 14	$ 35
Other | Subsequent Event
Loans Receivable:
Outstanding balance		$ 67
Loans receivable, number of extensions | extension_option		1
Loan receivable, period of extensions		12 months
Loans receivable, interest rate		0.08
Payments for loans receivable		$ 28
Secured loan | loan		1
Proceeds from the collection of loans receivable		$ 15
Other | Subsequent Event | Lab
Loans Receivable:
Outstanding balance		$ 75