Financing Receivables - General Credit Quality Information - Commercial Mortgage Loans Narrative (Details) - Commercial Loans - Commercial mortgage loans - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2023	Dec. 31, 2022
Financing Receivables
Loans	$ 1,832	$ 1,882
Past due
Financing Receivables
Loans	$ 0	$ 0
Total commercial mortgage loans \| Credit concentration risk
Financing Receivables
Percentage of total, less than	100.00%	100.00%

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

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