Long-term and Short-term Debt (Details) - Intercompany Liquidity Facilities - USD ($) $ in Millions	Aug. 16, 2022	May 16, 2022
Brighthouse Life Insurance Company as Lender
Short-term Debt [Line Items]
Debt instrument, stated interest rate	4.0466%	2.5363%
Debt instrument, face amount	$ 125	$ 125
BH Holdings as Lender
Short-term Debt [Line Items]
Debt instrument, stated interest rate	4.0466%	2.5363%
Debt instrument, face amount	$ 125	$ 125

Face (par) amount of debt instrument at time of issuance.

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Name:	us-gaap_DebtInstrumentFaceAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant