Financing Receivables - Residential Mortgage Loans (Details) - USD ($) $ in Millions	6 Months Ended
Jun. 30, 2024	Jun. 30, 2023	Dec. 31, 2023
Financing receivables - credit quality information
Loan write-offs	$ 3	$ 2
Consumer Loans
Financing receivables - credit quality information
Loan write-offs	1	$ 1
Consumer Loans \| Residential mortgage loans
Financing receivables - credit quality information
Loans	392		$ 300
Loan write-offs	0
Year 1	93		184
Year 2	185		73
Year 3	72		29
Year 4	29		14
Year 5	13
Total	392		300
Consumer Loans \| Residential mortgage loans \| Past due
Financing receivables - credit quality information
Loans	2		2
Total	2		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	146		108
Year 1	41		65
Year 2	62		29
Year 3	29		8
Year 4	8		6
Year 5	6
Total	146		108
FICO Score, 740-779 \| Consumer Loans \| Residential mortgage loans
Financing receivables - credit quality information
Loans	152		120
Year 1	31		80
Year 2	82		26
Year 3	26		8
Year 4	8		6
Year 5	5
Total	152		120
FICO Score 720 to 739 \| Consumer Loans \| Residential mortgage loans
Financing receivables - credit quality information
Loans	37		26
Year 1	11		15
Year 2	16		6
Year 3	5		4
Year 4	5		1
Year 5	0
Total	37		26
FICO Score 700 to 719 \| Consumer Loans \| Residential mortgage loans
Financing receivables - credit quality information
Loans	20		18
Year 1	2		8
Year 2	9		5
Year 3	5		4
Year 4	3		1
Year 5	1
Total	20		18
FICO Score Less Than 699 \| Consumer Loans \| Residential mortgage loans
Financing receivables - credit quality information
Loans	20		14
Year 1	6		7
Year 2	7		4
Year 3	4		3
Year 4	3		0
Year 5	0
Total	$ 20		$ 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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