Condensed Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Statement of Comprehensive Income [Abstract]
Net income	$ 2,986	$ 1,931	$ 4,998	$ 3,358
Other comprehensive income, net of tax:
Net unrealized investment gains	524	251	213	585
Foreign currency translation adjustments	6	3	(6)	4
Net cash flow hedges	(3)	(3)	(12)	(7)
Pension and other postretirement benefits	(1)	0	(1)	0
Other comprehensive income	526	251	194	582
Comprehensive income	3,512	2,182	5,192	3,940
Comprehensive (income) loss attributable to noncontrolling interests	(11)	5	(16)	(1)
Comprehensive income attributable to CVS Health	$ 3,501	$ 2,187	$ 5,176	$ 3,939