Outstanding Exposure - Schedule of Non-Financial Guaranty Exposure (Details) - USD ($) $ in Millions	Jun. 30, 2022	Dec. 31, 2021
Schedule of Insured Financial Obligations [Line Items]
Gross Exposure	$ 1,625	$ 1,605
Net Exposure	1,119	1,071
Life insurance transactions
Schedule of Insured Financial Obligations [Line Items]
Gross Exposure	1,270	1,250
Net Exposure	919	871
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