Condensed Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Statement of Comprehensive Income [Abstract]
Net income	$ 1,219	$ 1,529	$ 6,217	$ 4,887
Other comprehensive income, net of tax:
Net unrealized investment gains	44	136	257	721
Foreign currency translation adjustments	1	153	(5)	157
Net cash flow hedges	(3)	(23)	(15)	(30)
Pension and other postretirement benefits	0	0	(1)	0
Other comprehensive income	42	266	236	848
Comprehensive income	1,261	1,795	6,453	5,735
Comprehensive (income) loss attributable to noncontrolling interests	5	1	(11)	0
Comprehensive income attributable to CVS Health	$ 1,266	$ 1,796	$ 6,442	$ 5,735