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, 2022	Dec. 31, 2021
Derivative liabilities, net of derivative assets
Net realized/unrealized gains (losses)
Transfers into Level 3	$ 0	$ 0
Transfers out of Level 3	(10)	(2)
Net unrealized gains still held at December 31,
Included in OCI	0	0
Liabilities
Fair value at beginning of the period	53	12
Net realized/unrealized (gains) losses
Included in earnings	(5)	35
Included in OCI	0	0
Purchases	0	0
Sales	0	0
Issuances	0	5
Settlements	(19)	(1)
Transfers into Level 3	0	0
Transfers out of Level 3	10	2
Fair value at ending of the period	39	53
Net unrealized (gains) losses still held at December 31,
Included in earnings	(11)	26
Included in OCI	0	0
Equity securities
Assets
Fair value at beginning of the period	9	7
Net realized/unrealized gains (losses)
Included in earnings	1	4
Included in OCI	0	0
Purchases	0	0
Sales	(9)	(3)
Issuances	0	0
Settlements	0	0
Transfers into Level 3	0	1
Transfers out of Level 3	0	0
Fair value at ending of the period	1	9
Net unrealized gains still held at December 31,
Included in earnings	0	4
Included in OCI	0	0
Net realized/unrealized (gains) losses
Transfers into Level 3	0	1
Transfers out of Level 3	0	0
Net unrealized (gains) losses still held at December 31,
Included in OCI	0	0
Available-for-sale securities
Assets
Fair value at beginning of the period	9	7
Net realized/unrealized gains (losses)
Included in earnings	0	0
Included in OCI	0	0
Purchases	6	2
Sales	0	0
Issuances	0	0
Settlements	(11)	0
Transfers into Level 3	0	0
Transfers out of Level 3	0	0
Fair value at ending of the period	4	9
Net unrealized gains still held at December 31,
Included in earnings	0	0
Included in OCI	0	0
Net realized/unrealized (gains) losses
Transfers into Level 3	0	0
Transfers out of Level 3	0	0
Net unrealized (gains) losses still held at December 31,
Included in OCI	0	0
Mortgage loans held-for-sale
Assets
Fair value at beginning of the period	0	91
Net realized/unrealized gains (losses)
Included in earnings	0	64
Included in OCI	0	0
Purchases	0	2,640
Sales	0	(2,693)
Issuances	0	0
Settlements	0	0
Transfers into Level 3	0	0
Transfers out of Level 3	0	(102)
Fair value at ending of the period	0	0
Net unrealized gains still held at December 31,
Included in earnings	0	0
Included in OCI	0	0
Net realized/unrealized (gains) losses
Transfers into Level 3	0	0
Transfers out of Level 3	0	102
Net unrealized (gains) losses still held at December 31,
Included in OCI	0	0
Finance receivables and loans, net
Net realized/unrealized gains (losses)
Purchases	12	14
Finance receivables and loans, net \| Consumer Loan
Assets
Fair value at beginning of the period	7	8
Net realized/unrealized gains (losses)
Included in earnings	(1)	2
Included in OCI	0	0
Sales	0	0
Issuances	0	0
Settlements	(15)	(17)
Transfers into Level 3	0	0
Transfers out of Level 3	0	0
Fair value at ending of the period	3	7
Net unrealized gains still held at December 31,
Included in earnings	0	0
Included in OCI	0	0
Net realized/unrealized (gains) losses
Transfers into Level 3	0	0
Transfers out of Level 3	0	0
Net unrealized (gains) losses still held at December 31,
Included in OCI	$ 0	$ 0

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

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Amount of gain (loss) recognized in income from asset 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 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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Fair value of financial instrument classified as a liability measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

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