Disposition - MetLife Seguros de Retiro S.A. (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Gain (Loss) on Sale of Business	$ 2,558	$ 6,575	$ 5,418
Net investment gains (losses)	(1,262)	1,529	(110)
Provision for income tax expense (benefit)	$ 301	$ 1,551	1,509
MetLife Seguros de Retiro S.A. [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Gain (Loss) on Sale of Business			(162)
Net investment gains (losses)			(130)
Provision for income tax expense (benefit)			$ 32