Financing Receivables - Credit Quality Information - Residential Mortgage Loans (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Residential mortgage loans
Loan write-offs	$ 8	$ 4	$ 4
Consumer Loans
Residential mortgage loans
Loan write-offs	4	2	$ 1
Consumer Loans \| Residential mortgage loans
Residential mortgage loans
Loan write-offs	0
Originated in current fiscal year	186	184
Originated in fiscal year before latest fiscal year	172	73
Originated two years before latest fiscal year	68	29
Originated three years before latest fiscal year	27	14
Originated four years before latest fiscal year	13
Total	466	300
Consumer Loans \| Residential mortgage loans \| Past due
Residential mortgage loans
Total	4	2
Consumer Loans \| Residential mortgage loans \| > 810
Residential mortgage loans
Originated in current fiscal year	5	9
Originated in fiscal year before latest fiscal year	9	3
Originated two years before latest fiscal year	2	2
Originated three years before latest fiscal year	2	0
Originated four years before latest fiscal year	1
Total	19	14
Consumer Loans \| Residential mortgage loans \| 780 - 809
Residential mortgage loans
Originated in current fiscal year	84	65
Originated in fiscal year before latest fiscal year	56	29
Originated two years before latest fiscal year	28	8
Originated three years before latest fiscal year	7	6
Originated four years before latest fiscal year	6
Total	181	108
Consumer Loans \| Residential mortgage loans \| 740 - 779
Residential mortgage loans
Originated in current fiscal year	64	80
Originated in fiscal year before latest fiscal year	77	26
Originated two years before latest fiscal year	25	8
Originated three years before latest fiscal year	7	6
Originated four years before latest fiscal year	5
Total	178	120
Consumer Loans \| Residential mortgage loans \| 720 - 739
Residential mortgage loans
Originated in current fiscal year	17	15
Originated in fiscal year before latest fiscal year	15	6
Originated two years before latest fiscal year	5	4
Originated three years before latest fiscal year	5	1
Originated four years before latest fiscal year	0
Total	42	26
Consumer Loans \| Residential mortgage loans \| 700 - 719
Residential mortgage loans
Originated in current fiscal year	9	8
Originated in fiscal year before latest fiscal year	8	5
Originated two years before latest fiscal year	5	4
Originated three years before latest fiscal year	3	1
Originated four years before latest fiscal year	1
Total	26	18
Consumer Loans \| Residential mortgage loans \| Less than 699
Residential mortgage loans
Originated in current fiscal year	7	7
Originated in fiscal year before latest fiscal year	7	4
Originated two years before latest fiscal year	3	3
Originated three years before latest fiscal year	3	0
Originated four years before latest fiscal year	0
Total	$ 20	$ 14

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.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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-Subsection 29
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