Financing Receivables - Residential Mortgage Loans (Details) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023
Financing receivables - credit quality information
Loan write-offs	$ 2	$ 1
Consumer Loans
Financing receivables - credit quality information
Loan write-offs	1	$ 0
Consumer Loans \| Residential mortgage loans
Financing receivables - credit quality information
Loans	332		$ 300
Loan write-offs	0
Year 1	27		184
Year 2	191		73
Year 3	72		29
Year 4	29		14
Year 5	13
Total	332		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	16		14
Year 1	0		9
Year 2	10		3
Year 3	3		2
Year 4	2		0
Year 5	1
Total	16		14
FICO Score, 780-809 \| Consumer Loans \| Residential mortgage loans
Financing receivables - credit quality information
Loans	121		108
Year 1	14		65
Year 2	64		29
Year 3	29		8
Year 4	8		6
Year 5	6
Total	121		108
FICO Score, 740-779 \| Consumer Loans \| Residential mortgage loans
Financing receivables - credit quality information
Loans	132		120
Year 1	8		80
Year 2	85		26
Year 3	26		8
Year 4	8		6
Year 5	5
Total	132		120
FICO Score 720 to 739 \| Consumer Loans \| Residential mortgage loans
Financing receivables - credit quality information
Loans	29		26
Year 1	3		15
Year 2	16		6
Year 3	6		4
Year 4	4		1
Year 5	0
Total	29		26
FICO Score 700 to 719 \| Consumer Loans \| Residential mortgage loans
Financing receivables - credit quality information
Loans	18		18
Year 1	0		8
Year 2	8		5
Year 3	5		4
Year 4	4		1
Year 5	1
Total	18		18
FICO Score Less Than 699 \| Consumer Loans \| Residential mortgage loans
Financing receivables - credit quality information
Loans	16		14
Year 1	2		7
Year 2	8		4
Year 3	3		3
Year 4	3		0
Year 5	0
Total	$ 16		$ 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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