Financing Receivables - Purchases, Sales and Nonperforming (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Financing Receivables
Loans sold	$ 0		$ 0
Nonperforming
Financing Receivables
Loans	11	$ 9
Deteriorated credit quality
Financing Receivables
Loans purchased	0
Commercial Loans \| Commercial mortgage loans
Financing Receivables
Loans sold		746
Loans	1,882	1,916
Commercial Loans \| Syndicated loans
Financing Receivables
Loans sold	1	354	17
Loans purchased	67	37	173
Loans	175	149
Consumer Loans \| Residential mortgage loans
Financing Receivables
Loans sold	0	1	0
Loans purchased	$ 72	$ 33	$ 22

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Amortized cost excluding accrued interest, before allowance for credit loss, of financing receivable. Excludes net investment in lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 20
-Section 50
-Paragraph 5
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-Publisher FASB
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-Name Accounting Standards Codification
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-Section 50
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-URI https://asc.fasb.org/extlink&oid=124255953&loc=SL120267963-210447

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Amount of increase in financing receivable from purchase. Excludes net investment in lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 20
-Section 50
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-URI https://asc.fasb.org/extlink&oid=124255953&loc=SL82919244-210447

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Amount of decrease in financing receivable from sale and reclassification to held-for-sale. Excludes net investment in lease.

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