Investments (Age Analysis of Past Due Recorded Investments) (Details) - USD ($) $ in Millions	Sep. 30, 2022	Dec. 31, 2021
Financing Receivable, Past Due [Line Items]
Loans Receivable, Gross, Commercial, Real Estate	$ 6,613	$ 6,329
Financial Asset, Not Past Due
Financing Receivable, Past Due [Line Items]
Loans Receivable, Gross, Commercial, Real Estate	6,577	6,329
Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Loans Receivable, Gross, Commercial, Real Estate	19	0
Financial Asset, 30 to 59 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Loans Receivable, Gross, Commercial, Real Estate	$ 17	$ 0

Amortized cost, before allowance for credit loss, of financing receivable. Excludes financing receivable covered under loss sharing agreement and net investment in lease.

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+ Details