Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Statement of Comprehensive Income [Abstract]
Net income	$ 1,541	$ 1,247	$ 3,612	$ 3,740
Other comprehensive income (loss):
Foreign currency translation adjustments, net of tax	(3)	(61)	37	(100)
Cash flow hedges, net of tax	1	0	2	1
Net other comprehensive income (loss)	(2)	(61)	39	(99)
Comprehensive income	1,539	1,186	3,651	3,641
Comprehensive income attributable to noncontrolling interest	(1)	(1)	(2)	(1)
Comprehensive income attributable to CVS Health	$ 1,538	$ 1,185	$ 3,649	$ 3,640