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Investments - Mortgage Loans, Residential by State (Details) - Geographic Concentration Risk - Residential mortgage loans - Mortgage Loans, Net	Jun. 30, 2023	Dec. 31, 2022
Loans and Leases Receivable Disclosure [Line Items]
Percentage concentration risk	100.00%	100.00%
California
Loans and Leases Receivable Disclosure [Line Items]
Percentage concentration risk	28.60%	28.90%
Florida
Loans and Leases Receivable Disclosure [Line Items]
Percentage concentration risk	10.70%	9.70%
NEW YORK
Loans and Leases Receivable Disclosure [Line Items]
Percentage concentration risk	6.40%	5.60%
Other U.S. States
Loans and Leases Receivable Disclosure [Line Items]
Percentage concentration risk	28.80%	27.40%
Total U.S. Region
Loans and Leases Receivable Disclosure [Line Items]
Percentage concentration risk	89.40%	86.30%
UNITED KINGDOM
Loans and Leases Receivable Disclosure [Line Items]
Percentage concentration risk	4.40%	5.40%
Other
Loans and Leases Receivable Disclosure [Line Items]
Percentage concentration risk	6.20%	8.30%
International
Loans and Leases Receivable Disclosure [Line Items]
Percentage concentration risk	10.60%	13.70%
NEW JERSEY
Loans and Leases Receivable Disclosure [Line Items]
Percentage concentration risk	5.30%	5.30%
ARIZONA
Loans and Leases Receivable Disclosure [Line Items]
Percentage concentration risk	4.50%	5.10%
TEXAS
Loans and Leases Receivable Disclosure [Line Items]
Percentage concentration risk	5.10%	4.30%

X

- Definition

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.

+ References

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-Topic 280
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