Financing Receivables - Residential Mortgage Loans (Details) - USD ($) $ in Millions	9 Months Ended
Sep. 30, 2025	Sep. 30, 2024	Dec. 31, 2024
Financing receivables - credit quality information
Loan write-offs	$ 4	$ 6
Consumer Loans
Financing receivables - credit quality information
Loan write-offs	3	$ 3
Consumer Loans \| Residential mortgage loans
Financing receivables - credit quality information
Loans	671		$ 466
Loan write-offs	0
Year 1	227		186
Year 2	185		172
Year 3	159		68
Year 4	63		27
Year 5	26		13
Prior	11
Total	671		466
Consumer Loans \| Residential mortgage loans \| Past due
Financing receivables - credit quality information
Loans	7		4
Total	7		4
FICO Score, Greater than 810 \| Consumer Loans \| Residential mortgage loans
Financing receivables - credit quality information
Loans	34		19
Year 1	15		5
Year 2	8		9
Year 3	6		2
Year 4	2		2
Year 5	2		1
Prior	1
Total	34		19
FICO Score, 780-809 \| Consumer Loans \| Residential mortgage loans
Financing receivables - credit quality information
Loans	277		181
Year 1	103		84
Year 2	83		56
Year 3	53		28
Year 4	26		7
Year 5	7		6
Prior	5
Total	277		181
FICO Score, 740-779 \| Consumer Loans \| Residential mortgage loans
Financing receivables - credit quality information
Loans	241		178
Year 1	74		64
Year 2	62		77
Year 3	72		25
Year 4	22		7
Year 5	7		5
Prior	4
Total	241		178
FICO Score 720 to 739 \| Consumer Loans \| Residential mortgage loans
Financing receivables - credit quality information
Loans	57		42
Year 1	17		17
Year 2	17		15
Year 3	14		5
Year 4	5		5
Year 5	4		0
Prior	0
Total	57		42
FICO Score 700 to 719 \| Consumer Loans \| Residential mortgage loans
Financing receivables - credit quality information
Loans	36		26
Year 1	11		9
Year 2	8		8
Year 3	8		5
Year 4	5		3
Year 5	3		1
Prior	1
Total	36		26
FICO Score Less Than 699 \| Consumer Loans \| Residential mortgage loans
Financing receivables - credit quality information
Loans	26		20
Year 1	7		7
Year 2	7		7
Year 3	6		3
Year 4	3		3
Year 5	3		0
Prior	0
Total	$ 26		$ 20

Amount, excluding accrued interest, of decrease in allowance for credit loss on financing receivable from writeoff. Excludes net investment in lease.

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