Schedule Of Income Loss On Sale Recorded In Our Disposition Group (Parenthetical) (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Net unrealized investment gains (losses)	$ 1,860	$ 2,214	$ 1,456	$ 595
Genworth Canada
Foreign currency translation and other adjustments	369
Deferred tax losses on accumulated other comprehensive income	71
Net unrealized investment gains (losses)	115
Genworth Australia
Foreign currency translation and other adjustments	160
Deferred tax losses on accumulated other comprehensive income	29
Net unrealized investment gains (losses)	22
Favorable adjustment relating to refinement of tax matters agreement	$ 10