Variable Interest Entities - Assets and Liabilities Related to Non-consolidated VIEs and Maximum Exposure to Losses (Details) - USD ($) $ in Millions	Jun. 30, 2023	Dec. 31, 2022
Variable Interest Entity
Total Assets	$ 207,276	$ 207,452
Total Liabilities	189,467	190,125
Variable Interest Entity, Not Primary Beneficiary | CDC investments
Variable Interest Entity
Total Assets	1,937	1,856
Total Liabilities	696	653
Maximum Exposure	1,937	1,856
Variable Interest Entity, Not Primary Beneficiary | Private equity investments
Variable Interest Entity
Total Assets	200	186
Total Liabilities	0	0
Maximum Exposure	374	349
Variable Interest Entity, Not Primary Beneficiary | Loans provided to VIEs
Variable Interest Entity
Total Assets	4,267	4,374
Total Liabilities	0	0
Maximum Exposure	6,251	6,438
Variable Interest Entity, Not Primary Beneficiary | Lease pool entities
Variable Interest Entity
Total Assets	50	61
Total Liabilities	0	0
Maximum Exposure	50	61
Variable Interest Entity, Not Primary Beneficiary | Solar loan securitizations
Variable Interest Entity
Total Assets	8	10
Total Liabilities	0	0
Maximum Exposure	$ 8	$ 10