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Market Risk Benefits Balance Sheet (Details) - USD ($) $ in Millions	Jun. 30, 2024	Dec. 31, 2023	Jun. 30, 2023	Dec. 31, 2022
Market Risk Benefit [Line Items]
Asset	$ 356	$ 286
Liability	2,618	3,179
Net	2,262	2,893
Retirement Assurance | Asia
Market Risk Benefit [Line Items]
Asset	0	0
Liability	177	203
Net	177	203	$ 202	$ 226
Investment Product | MetLife Holdings
Market Risk Benefit [Line Items]
Asset	213	156
Liability	2,366	2,878
Net	2,153	2,722
Insurance, Other
Market Risk Benefit [Line Items]
Asset	143	130
Liability	75	98
Net	$ (68)	$ (32)	$ (15)	$ 32

X

- Definition

Amount, before effect of reinsurance and after accumulated increase (decrease) in instrument-specific credit risk, of contract or contract feature in long-duration contract issued by insurance entity that both protects contract holder from other-than-nominal capital market risk and exposes insurance entity to other-than-nominal capital market risk.

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