Condensed Consolidated Statements of Income - USD ($) shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Income Statement [Abstract]
Net revenues	$ 43,725	$ 37,169	$ 86,940	$ 73,501
Cost of revenues	36,710	30,767	73,181	60,935
Gross profit	7,015	6,402	13,759	12,566
Operating expenses	4,665	4,140	9,233	8,172
Operating profit	2,350	2,262	4,526	4,394
Interest expense, net	280	166	563	300
Loss on early extinguishment of debt	542	0	542	0
Income before income tax provision	1,528	2,096	3,421	4,094
Income tax provision	604	824	1,350	1,601
Net income	924	1,272	2,071	2,493
Net income attributable to noncontrolling interest	0	0	(1)	0
Net income attributable to CVS Health	$ 924	$ 1,272	$ 2,070	$ 2,493
Net income per share attributable to CVS Health:
Earnings per share, basic (in dollars per share)	$ 0.86	$ 1.13	$ 1.91	$ 2.20
Earnings per share, diluted (in dollars per share)	$ 0.86	$ 1.12	$ 1.90	$ 2.19
Weighted average shares outstanding:
Weighted averages shares outstanding, basic (in shares)	1,070	1,124	1,081	1,126
Weighted averages shares outstanding, diluted (in shares)	1,075	1,132	1,087	1,134
Dividends declared per share (in dollars per share)	$ 0.425	$ 0.350	$ 0.850	$ 0.700