Outstanding Exposure - Schedule of Non-Financial Guaranty Exposure (Details) - USD ($) $ in Millions	Jun. 30, 2023	Dec. 31, 2022
Life insurance transactions
Schedule of Insured Financial Obligations [Line Items]
Gross Exposure	$ 1,326	$ 1,314
Net Exposure	992	986
Life insurance transactions | Maximum
Schedule of Insured Financial Obligations [Line Items]
Net Exposure	1,100
Aircraft residual value insurance policies
Schedule of Insured Financial Obligations [Line Items]
Gross Exposure	355	355
Net Exposure	200	200
Other guaranties
Schedule of Insured Financial Obligations [Line Items]
Gross Exposure	1,643	228
Net Exposure	$ 1,643	$ 228