Outstanding Exposure - Schedule of Non-Financial Guaranty Exposure (Details) - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023
Insurance securitizations
Schedule of Insured Financial Obligations [Line Items]
Gross Exposure	$ 1,398	$ 1,370
Net Exposure	1,067	1,043
Insurance securitizations | Maximum
Schedule of Insured Financial Obligations [Line Items]
Gross Exposure	1,500
Net Exposure	1,200
Aircraft residual value insurance
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	2,001	2,057
Net Exposure	$ 2,001	$ 2,057