Commercial Mortgage Loans, Percentage of Investments

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Debt Securities, Available-For-Sale, Unrealized Loss Position, Allowance For Credit Loss, Excluding Accrued Interest

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Debt Service Coverage Ratio, Amortization Period

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Financing Receivable, Allowance For Credit Loss, Probability of Loss, Default, Model, Using Reasonable And Supportable Projected Loss, Forecast Period

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Financing Receivable, Allowance For Credit Loss, Probability of Projected Loss, Default, Projection Model, Using Market Historical Loss, Period

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Investment, Non-Income Producing, Greater Than Twelve Months, Fair Value Disclosure

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Number of Loans Delinquent In Principal Or Interest Payments

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Residential Mortgage Loans, Location Percentage

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Percentage of the total residential loan portfolio

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- Definition

Carrying amount of cash and investment securities on deposit with state regulatory authorities in connection with capital requirements.

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Amount, after allowance for credit loss, of accrued interest on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Indicates line item in statement of financial position that includes accrued interest, after allowance for credit loss, on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Amount excluding accrued interest, of allowance for credit loss on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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- Definition

Amount of the collateral pledged in support of federal home loan bank advances outstanding.

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

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Amount, before investment expense, of income earned from investments in securities and real estate. Includes, but is not limited to, real estate investment, policy loans, dividends, and interest. Excludes realized gain (loss) on investments.

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Value of the investment at close of period. For schedules of investments that are categorized, the value would be aggregated by category. For investment in and advances to affiliates, if operations of any controlled companies are different in character from those of the company, group such affiliates within divisions and by type of activities.

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Balance held at close of period in number of shares.

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Recorded investment of consumer mortgage loan receivables secured by residential real estate properties for which formal foreclosure proceedings are in process.

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Cash received on stock transaction after deduction of issuance costs.

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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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Investments - Narrative (Details)	7 Months Ended	12 Months Ended
Investments - Narrative (Details)	Dec. 31, 2020 USD ($)	Dec. 31, 2022 USD ($) loan shares	Dec. 31, 2021 USD ($) loan shares	Dec. 31, 2020 USD ($)
Debt Securities, Available-for-sale [Line Items]
Non-income producing investment fair value		$ 27,000,000	$ 0
Accrued interest receivable		365,000,000	253,000,000
FHLB collateral pledged		3,387,000,000	2,469,000,000
Available for sale securities, allowance for credit losses		39,000,000	8,000,000
Available-for-sale, securities in unrealized loss position, allowance for credit loss		$ 39,000,000
Commercial mortgage loans, percentage of investments		6.00%
DSC ratio, amortization period		25 years
Gross investment income		$ 2,088,000,000	2,128,000,000	$ 978,000,000
Debt Securities, Available-for-Sale, Accrued Interest, after Allowance for Credit Loss, Statement of Financial Position [Extensible Enumeration]		Prepaid expenses and other assets
Funds Withheld for Reinsurance
Debt Securities, Available-for-sale [Line Items]
Gross investment income	$ 21,000,000	$ 109,000,000	$ 53,000,000
Residential Mortgage
Debt Securities, Available-for-sale [Line Items]
Percentage of total investments		5.00%	4.00%
Mortgage loans over 90 days past due		$ 2,180,000,000	$ 1,606,000,000
Residential Mortgage \| 90 days or more past due
Debt Securities, Available-for-sale [Line Items]
Mortgage loans over 90 days past due		62,000,000	72,000,000
Commercial Mortgage
Debt Securities, Available-for-sale [Line Items]
Mortgage loans over 90 days past due		2,416,000,000	2,174,000,000
Commercial Mortgage \| 90 days or more past due
Debt Securities, Available-for-sale [Line Items]
Mortgage loans over 90 days past due		$ 9,000,000	$ 0
Cannae Holdings Inc. \| Equity securities
Debt Securities, Available-for-sale [Line Items]
Investment owned, (in shares) \| shares			5,775,598
Investment owned, at fair value			$ 203,000,000
Investment in affiliate \| Equity securities
Debt Securities, Available-for-sale [Line Items]
Investment owned, (in shares) \| shares		0
Aggregate consideration to Cannae in exchange transaction		$ 109,000,000
United States
Debt Securities, Available-for-sale [Line Items]
Residential mortgage loans, location percentage		100.00%
Commercial Mortgage Loans
Debt Securities, Available-for-sale [Line Items]
Number of loans delinquent in principal or interest payments \| loan		1	0
Mortgage loans \| 90 days or more past due
Debt Securities, Available-for-sale [Line Items]
Mortgage loans over 90 days past due		$ 71,000,000	$ 72,000,000
Mortgage loans in process of foreclosure		$ 38,000,000	39,000,000
Mortgage loans \| Residential Mortgage
Debt Securities, Available-for-sale [Line Items]
Allowance for expected credit loss, probability of loss/default model, projected loss, forecast period		2 years
Allowance for credit loss, probability of loss/default, using market historical loss experience, period		3 years
Mortgage loans \| Commercial Mortgage
Debt Securities, Available-for-sale [Line Items]
Allowance for expected credit loss, probability of loss/default model, projected loss, forecast period		2 years
Allowance for credit loss, probability of loss/default, using market historical loss experience, period		3 years
Fixed maturity securities, available-for-sale
Debt Securities, Available-for-sale [Line Items]
Assets held by insurance regulators		$ 17,870,000,000	$ 22,343,000,000