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Long-term Debt - Additional Information (Detail)			1 Months Ended	2 Months Ended	11 Months Ended	12 Months Ended
Long-term Debt - Additional Information (Detail)	May 29, 2024 USD ($)	Feb. 22, 2024 USD ($)	Sep. 30, 2012 USD ($)	Dec. 31, 2023 USD ($)	Nov. 15, 2023 USD ($)	Dec. 31, 2024 USD ($) debtInstrument	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)	Jun. 04, 2024 USD ($)	Feb. 21, 2024 USD ($)	Nov. 16, 2023 USD ($)	Nov. 02, 2023 USD ($)	Feb. 02, 2023 USD ($)	Nov. 02, 2018 USD ($)
Debt Instrument [Line Items]
Principal				$ 143,800,000		$ 143,800,000	$ 143,800,000
Debt borrowings				0	$ 0	100,000,000.0		$ 0
Amount of collateral under reinsurance agreement				1,212,200,000		1,157,900,000	$ 1,212,200,000
Revolving Credit Facility \| Brookfield Wealth Solutions Ltd
Debt Instrument [Line Items]
Line of credit, maximum borrowing amount									$ 1,200,000,000
Letter of Credit
Debt Instrument [Line Items]
Letter of credit facility amount outstanding						31,200,000
Amount of collateral under reinsurance agreement						40,100,000
New Credit Agreement
Debt Instrument [Line Items]
Line of credit, maximum borrowing amount														$ 325,000,000
New Credit Agreement \| Term Loan
Debt Instrument [Line Items]
Principal														125,000,000
New Credit Agreement \| Revolving Credit Facility
Debt Instrument [Line Items]
Principal												$ 200,000,000	$ 220,000,000	$ 200,000,000
Debt covenant, consolidated net worth										$ 872,000,000
Percent of net income added to consolidated net worth										50.00%
Percent of net proceeds from equity interests added to consolidated net worth										50.00%
Debt borrowings		$ 100,000,000
Repayments of borrowings	$ 100,000,000
Reinsurance Credit Facilities, Secured Bilateral Line of Credit Facilities \| Letter of Credit
Debt Instrument [Line Items]
Letter of credit facility amount outstanding						$ 110,000,000
Committed Secured Bilateral Facility \| Letter of Credit
Debt Instrument [Line Items]
Number of letters of credit \| debtInstrument						1
Debt instrument, term						1 year
Letter of credit facility amount outstanding						$ 19,400,000
Uncommitted Secured Bilateral Facility \| Letter of Credit
Debt Instrument [Line Items]
Number of letters of credit \| debtInstrument						1
Letter of credit facility amount outstanding						$ 11,900,000
Other Letters of Credit \| Letter of Credit
Debt Instrument [Line Items]
Letter of credit facility amount outstanding						$ 4,100,000
Senior unsecured fixed rate notes
Debt Instrument [Line Items]
Principal			$ 143,800,000
Debt instrument interest rate stated percentage			6.50%
Redemption price, percentage			100.00%
Junior subordinated debentures
Debt Instrument [Line Items]
Redemption price, percentage						100.00%	100.00%
Subordinated debentures
Debt Instrument [Line Items]
Principal				$ 91,800,000		$ 91,800,000	$ 91,800,000				$ 91,800,000
Debt instrument interest rate stated percentage				8.79%		7.77%	8.79%
Unsecured debentures				$ 80,400,000		$ 81,200,000	$ 80,400,000				$ 81,200,000