Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Statement of Comprehensive Income [Abstract]
Net income	$ 7,898	$ 7,192	$ 6,631
Other comprehensive income (loss), net of tax:
Net unrealized investment gains (losses)	(436)	440	677
Foreign currency translation adjustments	(7)	3	162
Net cash flow hedges	(26)	(31)	(33)
Pension and other postretirement benefits	20	(17)	111
Other comprehensive income (loss)	(449)	395	917
Comprehensive income	7,449	7,587	7,548
Comprehensive (income) loss attributable to noncontrolling interests	12	(13)	3
Comprehensive income attributable to CVS Health	$ 7,461	$ 7,574	$ 7,551