Fair Value (Fair Value Measurements - Reconciliation of Level 3 Assets And Liabilities) (Details) - Fair value, measurements, recurring - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2023	Dec. 31, 2022
Derivative liabilities, net of derivative assets
Net unrealized losses still held at December 31,
Included in OCI	$ 0	$ 0
Liabilities
Fair value at beginning of the period	39	53
Net realized/unrealized gains
Included in earnings	(11)	(5)
Included in OCI	0	0
Purchases	0	0
Sales	0	0
Issuances	0	0
Settlements	(34)	(19)
Transfers into Level 3	0	0
Transfers out of Level 3	14	10
Fair value at ending of the period	8	39
Net unrealized gains still held at December 31,
Included in earnings	(7)	(11)
Included in OCI	0	0
Equity securities
Assets
Fair value at beginning of the period	1	9
Net realized/unrealized gains (losses)
Included in earnings	0	1
Included in OCI	0	0
Purchases	0	0
Sales	0	(9)
Issuances	0	0
Settlements	0	0
Transfers into Level 3	0	0
Transfers out of Level 3	0	0
Fair value at ending of the period	1	1
Net unrealized losses still held at December 31,
Included in earnings	0	0
Included in OCI	0	0
Net unrealized gains still held at December 31,
Included in OCI	0	0
Hedged available-for-sale securities
Assets
Fair value at beginning of the period	4	9
Net realized/unrealized gains (losses)
Included in earnings	0	0
Included in OCI	0	0
Purchases	5	6
Sales	0	0
Issuances	0	0
Settlements	0	(11)
Transfers into Level 3	0	0
Transfers out of Level 3	0	0
Fair value at ending of the period	9	4
Net unrealized losses still held at December 31,
Included in earnings	0	0
Included in OCI	0	0
Net unrealized gains still held at December 31,
Included in OCI	0	0
Finance receivables and loans, net \| Consumer Loan
Assets
Fair value at beginning of the period	3	7
Net realized/unrealized gains (losses)
Included in earnings	0	(1)
Included in OCI	0	0
Purchases	0	12
Sales	0	0
Issuances	0	0
Settlements	(3)	(15)
Transfers into Level 3	0	0
Transfers out of Level 3	0	0
Fair value at ending of the period	0	3
Net unrealized losses still held at December 31,
Included in earnings	0	0
Included in OCI	0	0
Net unrealized gains still held at December 31,
Included in OCI	$ 0	$ 0

Fair Value, Asset, Recurring Basis, Still Held

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Fair Value, Liability, Recurring Basis, Still Held

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Amount of unrealized gain (loss) recognized in other comprehensive income (OCI) from asset (liability) measured at fair value on recurring basis using unobservable input (level 3) and still held.

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Amount of unrealized gain (loss) recognized in income from asset measured at fair value on recurring basis using unobservable input (level 3) and still held.

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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Amount of transfers of financial instrument classified as a liability into level 3 of the fair value hierarchy.

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Amount of transfers of financial instrument classified as a liability out of level 3 of the fair value hierarchy.

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Amount of gain (loss) recognized in other comprehensive income (OCI) from asset measured at fair value on recurring basis using unobservable input (level 3).

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Amount of issuances of financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

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Amount of gain (loss) recognized in income from liability measured at fair value on recurring basis using unobservable input (level 3).

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Amount of gain (loss) recognized in other comprehensive income (OCI) from liability measured at fair value on recurring basis using unobservable input (level 3).

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