Financing Receivables - Credit Quality Information - Syndicated Loans (Details) - Commercial Loans - Syndicated loans - USD ($) $ in Millions	Mar. 31, 2022	Dec. 31, 2021
Amortized cost basis by year of origination and loan-to-value ratio
Year 1	$ 1	$ 23
Year 2	24	7
Year 3	7	20
Year 4	19	26
Year 5	24	40
Prior	71	33
Total amortized cost basis	146	149
Risk 5
Amortized cost basis by year of origination and loan-to-value ratio
Year 1	1	0
Year 2	0	0
Year 3	0	1
Year 4	0	0
Year 5	0	0
Prior	0	0
Total amortized cost basis	1	1
Risk 4
Amortized cost basis by year of origination and loan-to-value ratio
Year 1	0	0
Year 2	0	0
Year 3	0	0
Year 4	0	0
Year 5	0	1
Prior	3	2
Total amortized cost basis	3	3
Risk 3
Amortized cost basis by year of origination and loan-to-value ratio
Year 1	0	0
Year 2	4	0
Year 3	0	4
Year 4	9	5
Year 5	5	5
Prior	12	6
Total amortized cost basis	30	20
Risk 2
Amortized cost basis by year of origination and loan-to-value ratio
Year 1	0	15
Year 2	15	4
Year 3	6	12
Year 4	7	10
Year 5	7	18
Prior	32	12
Total amortized cost basis	67	71
Risk 1
Amortized cost basis by year of origination and loan-to-value ratio
Year 1	0	8
Year 2	5	3
Year 3	1	3
Year 4	3	11
Year 5	12	16
Prior	24	13
Total amortized cost basis	45	54
Past due
Amortized cost basis by year of origination and loan-to-value ratio
Total amortized cost basis	$ 0	$ 0