Financing Receivables - Residential Mortgage Loans (Details) - USD ($) $ in Millions	9 Months Ended
Sep. 30, 2024	Sep. 30, 2023	Dec. 31, 2023
Financing receivables - credit quality information
Loan write-offs	$ 6	$ 3
Consumer Loans
Financing receivables - credit quality information
Loan write-offs	3	$ 1
Consumer Loans \| Residential mortgage loans
Financing receivables - credit quality information
Loans	424		$ 300
Loan write-offs	0
Year 1	133		184
Year 2	180		73
Year 3	70		29
Year 4	28		14
Year 5	13
Total	424		300
Consumer Loans \| Residential mortgage loans \| Past due
Financing receivables - credit quality information
Loans	3		2
Total	3		2
FICO Score, Greater than 810 \| Consumer Loans \| Residential mortgage loans
Financing receivables - credit quality information
Loans	17		14
Year 1	2		9
Year 2	9		3
Year 3	3		2
Year 4	2		0
Year 5	1
Total	17		14
FICO Score, 780-809 \| Consumer Loans \| Residential mortgage loans
Financing receivables - credit quality information
Loans	167		108
Year 1	64		65
Year 2	61		29
Year 3	29		8
Year 4	7		6
Year 5	6
Total	167		108
FICO Score, 740-779 \| Consumer Loans \| Residential mortgage loans
Financing receivables - credit quality information
Loans	163		120
Year 1	45		80
Year 2	80		26
Year 3	25		8
Year 4	8		6
Year 5	5
Total	163		120
FICO Score 720 to 739 \| Consumer Loans \| Residential mortgage loans
Financing receivables - credit quality information
Loans	38		26
Year 1	13		15
Year 2	15		6
Year 3	5		4
Year 4	5		1
Year 5	0
Total	38		26
FICO Score 700 to 719 \| Consumer Loans \| Residential mortgage loans
Financing receivables - credit quality information
Loans	21		18
Year 1	4		8
Year 2	8		5
Year 3	5		4
Year 4	3		1
Year 5	1
Total	21		18
FICO Score Less Than 699 \| Consumer Loans \| Residential mortgage loans
Financing receivables - credit quality information
Loans	18		14
Year 1	5		7
Year 2	7		4
Year 3	3		3
Year 4	3		0
Year 5	0
Total	$ 18		$ 14

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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