Financing Receivables - Credit Quality Information - Residential Mortgage Loans (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Residential mortgage loans
Loan write-offs	$ 4	$ 4	$ 10
Consumer Loans
Residential mortgage loans
Loan write-offs	2	1	$ 2
Consumer Loans \| Residential mortgage loans
Residential mortgage loans
Loan write-offs	0
Originated in current fiscal year	184	71
Originated in fiscal year before latest fiscal year	73	31
Originated two years before latest fiscal year	29	15
Originated three years before latest fiscal year	14
Total	300	117
Consumer Loans \| Residential mortgage loans \| Past due
Residential mortgage loans
Total	2	3
Consumer Loans \| Residential mortgage loans \| > 810
Residential mortgage loans
Originated in current fiscal year	9	2
Originated in fiscal year before latest fiscal year	3	2
Originated two years before latest fiscal year	2	1
Originated three years before latest fiscal year	0
Total	14	5
Consumer Loans \| Residential mortgage loans \| 780 - 809
Residential mortgage loans
Originated in current fiscal year	65	30
Originated in fiscal year before latest fiscal year	29	9
Originated two years before latest fiscal year	8	7
Originated three years before latest fiscal year	6
Total	108	46
Consumer Loans \| Residential mortgage loans \| 740 - 779
Residential mortgage loans
Originated in current fiscal year	80	24
Originated in fiscal year before latest fiscal year	26	9
Originated two years before latest fiscal year	8	6
Originated three years before latest fiscal year	6
Total	120	39
Consumer Loans \| Residential mortgage loans \| 720 - 739
Residential mortgage loans
Originated in current fiscal year	15	5
Originated in fiscal year before latest fiscal year	6	5
Originated two years before latest fiscal year	4	0
Originated three years before latest fiscal year	1
Total	26	10
Consumer Loans \| Residential mortgage loans \| 700 - 719
Residential mortgage loans
Originated in current fiscal year	8	6
Originated in fiscal year before latest fiscal year	5	3
Originated two years before latest fiscal year	4	1
Originated three years before latest fiscal year	1
Total	18	10
Consumer Loans \| Residential mortgage loans \| Less than 699
Residential mortgage loans
Originated in current fiscal year	7	4
Originated in fiscal year before latest fiscal year	4	3
Originated two years before latest fiscal year	3	0
Originated three years before latest fiscal year	0
Total	$ 14	$ 7

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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