Variable Interest Entities - Additional Information (Details) $ in Millions	12 Months Ended
	Dec. 31, 2022 USD ($) investment	Dec. 31, 2021 USD ($)
Variable Interest Entity
Total Assets	$ 207,452	$ 211,116
LLCs designed for the purpose of purchasing pools of residual interests in leases
Variable Interest Entity
Number of co-investments | investment	3
Ownership percentage	50.00%
Variable Interest Entity, Not Primary Beneficiary | Loans provided to VIEs
Variable Interest Entity
Unfunded commitment amounts	$ 2,100	1,500
Variable Interest Entity, Not Primary Beneficiary | CDC investments
Variable Interest Entity
Total Assets	1,856	1,705
Variable Interest Entity, Not Primary Beneficiary | CDC investments | Qualified Affordable Housing Tax Credits
Variable Interest Entity
Total Assets	1,600	1,400
Unfunded commitments in qualifying LIHTC investments	$ 643	573
Variable Interest Entity, Not Primary Beneficiary | CDC investments | Qualified Affordable Housing Tax Credits | Minimum
Variable Interest Entity
Unfunded commitments, year expected to be funded	2023
Variable Interest Entity, Not Primary Beneficiary | CDC investments | Qualified Affordable Housing Tax Credits | Maximum
Variable Interest Entity
Unfunded commitments, year expected to be funded	2039
Variable Interest Entity, Not Primary Beneficiary | Private equity investments
Variable Interest Entity
Total Assets	$ 186	133
Unfunded commitment amounts	163	124
Capital contribution to private equity investments	$ 44	$ 17