Variable Interest Entities - Summary of Variable Interest Entities Information (Details) - USD ($) $ in Millions	Jun. 30, 2022	Dec. 31, 2021
Variable Interest Entity [Line Items]
Total Assets	$ 187,008	$ 186,346
Total Liabilities	172,581	168,923
Variable Interest Entity, Not Primary Beneficiary
Variable Interest Entity [Line Items]
Total Assets	2,235	2,827
Total Liabilities	1	1
Variable Interest Entity, Not Primary Beneficiary | LIHTC investments
Variable Interest Entity [Line Items]
Total Assets	6,773	7,839
Total Liabilities	2,220	3,252
Maximum Exposure to Loss	2,060	1,985
Variable Interest Entity, Not Primary Beneficiary | Principal Investments, Indirect
Variable Interest Entity [Line Items]
Total Assets	7,558	8,437
Total Liabilities	96	178
Maximum Exposure to Loss	$ 50	$ 57