Long-term and Short-term Debt (Narrative) (Details) - USD ($) $ in Millions			12 Months Ended
	Jun. 30, 2023	Mar. 28, 2023	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022	May 16, 2023	Feb. 16, 2023	Nov. 16, 2022	Aug. 16, 2022	May 16, 2022
Debt Instrument [Line Items]
Long-term debt maturities, year one			$ 3
Long-term debt maturities, year two			3
Long-term debt maturities, year three			3
Long-term debt maturities, year four			3
Long-term debt maturities, year five			4
Long-term debt maturities, after year five			817
Interest expense on long-term debt			67	$ 70	$ 70
Intercompany Liquidity Facilities | Brighthouse Life Insurance Company as Lender
Debt Instrument [Line Items]
Debt instrument, face amount						$ 75	$ 125	$ 125	$ 125	$ 125
Debt instrument, stated interest rate						6.4433%	5.9966%	5.7689%	4.0466%	2.5363%
Repayments of Short-Term Debt	$ 75	$ 50
Intercompany Liquidity Facilities | BH Holdings as Lender
Debt Instrument [Line Items]
Debt instrument, face amount						$ 75	$ 125	$ 125	$ 125	$ 125
Debt instrument, stated interest rate						6.2918%	5.9937%	5.4504%	4.0466%	2.5363%
Repayments of Short-Term Debt	$ 75	$ 50
BRCD Reinsurance Financing Arrangement
Debt Instrument [Line Items]
Credit facilities, maximum borrowing capacity			15,000
Credit facilities, outstanding balance			0
Credit facilities, remaining borrowing capacity			15,000
Credit facilities, commitment fee amount			21	21	26
BLIC Repurchase Facility
Debt Instrument [Line Items]
Credit facilities, maximum borrowing capacity			2,500
Credit facilities, outstanding balance			0
Affiliated Entity
Debt Instrument [Line Items]
Interest expense on long-term debt			$ 65	$ 68	$ 68