Variable Interest Entities - Assets and Liabilities Related to Non-consolidated VIEs and Maximum Exposure to Losses (Details) - USD ($) $ in Millions	Mar. 31, 2023	Dec. 31, 2022
Variable Interest Entity
Total Assets	$ 208,657	$ 207,452
Total Liabilities	190,293	190,125
Variable Interest Entity, Not Primary Beneficiary | CDC investments
Variable Interest Entity
Total Assets	1,886	1,856
Total Liabilities	687	653
Maximum Exposure	1,886	1,856
Variable Interest Entity, Not Primary Beneficiary | Private equity investments
Variable Interest Entity
Total Assets	187	186
Total Liabilities	0	0
Maximum Exposure	360	349
Variable Interest Entity, Not Primary Beneficiary | Loans provided to VIEs
Variable Interest Entity
Total Assets	4,171	4,374
Total Liabilities	0	0
Maximum Exposure	6,306	6,438
Variable Interest Entity, Not Primary Beneficiary | Lease pool entities
Variable Interest Entity
Total Assets	55	61
Total Liabilities	0	0
Maximum Exposure	55	61
Variable Interest Entity, Not Primary Beneficiary | Solar loan securitizations
Variable Interest Entity
Total Assets	10	10
Total Liabilities	0	0
Maximum Exposure	$ 10	$ 10