Disposition of MetLife Poland and Greece - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Jul. 31, 2021
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net investment gains (losses)	$ (1,262)	$ 1,529	$ (110)
Income (loss) from continuing operations before provision for income tax	2,859	8,126	6,927
MetLife Poland and Greece
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Agreed upon proceeds from divestiture of business.				$ 738
Dividends Receivable				$ 43
Net investment gains (losses)	(25)
Gain (Loss) on Disposition of Business	(239)
Income (loss) from continuing operations before provision for income tax	$ 19	$ 50	$ 30