Fair Value - Schedule of Fair Value Measurements - Reconciliation of Level 3 Assets And Liabilities (Details) - Fair value, measurements, recurring - USD ($) $ in Millions	3 Months Ended	6 Months Ended
Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Derivative liabilities, net of derivative assets
Liabilities
Fair value at beginning of the period	$ 8	$ 42	$ 8	$ 39
Net realized/unrealized gains
Included in earnings	(5)	(3)	(9)	(3)
Included in OCI	0	0	0	0
Purchases and originations	0	0	0	0
Sales	0	0	0	0
Issuances	0	0	0	0
Settlements	(5)	(25)	(5)	(25)
Transfers into Level 3	0	0	0	0
Transfers out of Level 3	5	4	9	7
Fair value at ending of the period	3	18	3	18
Net unrealized gains still held at June 30,
Included in earnings	(2)	(1)	(7)	(1)
Included in OCI	0	0	0	0
Equity securities
Assets
Fair value at beginning of the period	0	1	1	1
Net realized/unrealized gains
Included in earnings	0	0	0	0
Included in OCI	0	0	0	0
Purchases and originations	0	0	0	0
Sales	0	0	0	0
Issuances	0	0	0	0
Settlements	0	0	0	0
Transfers into Level 3	0	0	0	0
Transfers out of Level 3	0	0	(1)	0
Fair value at ending of the period	0	1	0	1
Net unrealized gains still held at June 30,
Included in earnings	0	0	0	0
Included in OCI	0	0	0	0
Available-for-sale securities
Assets
Fair value at beginning of the period	11	4	9	4
Net realized/unrealized gains
Included in earnings	0	0	0	0
Included in OCI	0	0	0	0
Purchases and originations	0	1	2	1
Sales	0	0	0	0
Issuances	0	0	0	0
Settlements	0	0	0	0
Transfers into Level 3	0	0	0	0
Transfers out of Level 3	0	0	0	0
Fair value at ending of the period	11	5	11	5
Net unrealized gains still held at June 30,
Included in earnings	0	0	0	0
Included in OCI	0	0	0	0
Mortgage loans held-for-sale
Assets
Fair value at beginning of the period	0	0	0	0
Net realized/unrealized gains
Included in earnings	0	0	0	0
Included in OCI	0	0	0	0
Purchases and originations	2	0	2	0
Sales	0	0	0	0
Issuances	0	0	0	0
Settlements	0	0	0	0
Transfers into Level 3	0	0	0	0
Transfers out of Level 3	0	0	0	0
Fair value at ending of the period	2	0	2	0
Net unrealized gains still held at June 30,
Included in earnings	0	0	0	0
Included in OCI	0	0	0	0
Finance receivables and loans, net \| Consumer Loan
Assets
Fair value at beginning of the period	0	2	0	3
Net realized/unrealized gains
Included in earnings	0	0	0	0
Included in OCI	0	0	0	0
Purchases and originations	0	0	0	0
Sales	0	0	0	0
Issuances	0	0	0	0
Settlements	0	(2)	0	(3)
Transfers into Level 3	0	0	0	0
Transfers out of Level 3	0	0	0	0
Fair value at ending of the period	0	0	0	0
Net unrealized gains still held at June 30,
Included in earnings	0	0	0	0
Included in OCI	$ 0	$ 0	$ 0	$ 0

Fair Value, Asset, Recurring Basis, Still Held

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