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

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Financing Receivables - Credit Quality - Commercial Mortgage Loans by Property Type (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Financing receivables - credit quality information
Less: allowance for loan losses	$ 59	$ 50	$ 68	$ 51
Commercial Loans
Financing receivables - credit quality information
Less: allowance for loan losses	54	47	$ 66	$ 51
Commercial Loans \| Commercial mortgage loans
Financing receivables - credit quality information
Loans	1,882	1,916
Less: allowance for loan losses	11	12
Total loans	1,871	1,904
Commercial Loans \| Commercial mortgage loans \| Apartments
Financing receivables - credit quality information
Loans	495	496
Commercial Loans \| Commercial mortgage loans \| Hotel
Financing receivables - credit quality information
Loans	14	14
Commercial Loans \| Commercial mortgage loans \| Industrial
Financing receivables - credit quality information
Loans	321	319
Commercial Loans \| Commercial mortgage loans \| Mixed Use
Financing receivables - credit quality information
Loans	66	68
Commercial Loans \| Commercial mortgage loans \| Office
Financing receivables - credit quality information
Loans	259	271
Commercial Loans \| Commercial mortgage loans \| Retail
Financing receivables - credit quality information
Loans	594	617
Commercial Loans \| Commercial mortgage loans \| Other
Financing receivables - credit quality information
Loans	$ 133	$ 131
Total commercial mortgage loans \| Credit concentration risk \| Commercial Loans \| Commercial mortgage loans
Financing receivables - credit quality information
Percentage of total	100.00%	100.00%
Total commercial mortgage loans \| Credit concentration risk \| Commercial Loans \| Commercial mortgage loans \| Apartments
Financing receivables - credit quality information
Percentage of total	26.00%	26.00%
Total commercial mortgage loans \| Credit concentration risk \| Commercial Loans \| Commercial mortgage loans \| Hotel
Financing receivables - credit quality information
Percentage of total	1.00%	1.00%
Total commercial mortgage loans \| Credit concentration risk \| Commercial Loans \| Commercial mortgage loans \| Industrial
Financing receivables - credit quality information
Percentage of total	17.00%	17.00%
Total commercial mortgage loans \| Credit concentration risk \| Commercial Loans \| Commercial mortgage loans \| Mixed Use
Financing receivables - credit quality information
Percentage of total	4.00%	3.00%
Total commercial mortgage loans \| Credit concentration risk \| Commercial Loans \| Commercial mortgage loans \| Office
Financing receivables - credit quality information
Percentage of total	14.00%	14.00%
Total commercial mortgage loans \| Credit concentration risk \| Commercial Loans \| Commercial mortgage loans \| Retail
Financing receivables - credit quality information
Percentage of total	31.00%	32.00%
Total commercial mortgage loans \| Credit concentration risk \| Commercial Loans \| Commercial mortgage loans \| Other
Financing receivables - credit quality information
Percentage of total	7.00%	7.00%