Condensed Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Statement of Comprehensive Income [Abstract]
Net income	$ 2,224	$ 2,012
Other comprehensive loss, net of tax:
Net unrealized investment losses	(386)	(311)
Foreign currency translation adjustments	(2)	(12)
Net cash flow hedges	(4)	(9)
Other comprehensive loss	(392)	(332)
Comprehensive income	1,832	1,680
Comprehensive income attributable to noncontrolling interests	(1)	(5)
Comprehensive income attributable to CVS Health	$ 1,831	$ 1,675