Condensed Consolidated Statements of Income (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Income Statement [Abstract]
Net revenues	$ 31,248	$ 30,714	$ 62,011	$ 61,512
Cost of revenues	25,412	25,265	50,593	50,950
Gross profit	5,836	5,449	11,418	10,562
Operating expenses	3,868	3,741	7,751	7,451
Operating profit	1,968	1,708	3,667	3,111
Interest expense, net	126	132	252	263
Income before income tax provision	1,842	1,576	3,415	2,848
Income tax provision	720	610	1,337	1,106
Income from continuing operations	1,122	966	2,078	1,742
Loss from discontinued operations, net of tax	(1)	(1)	(1)	(2)
Net income	1,121	965	2,077	1,740
Net loss attributable to noncontrolling interest	0	1	0	2
Net income attributable to CVS Caremark	$ 1,121	$ 966	$ 2,077	$ 1,742
Basic earnings per common share:
Income from continuing operations attributable to CVS Caremark (usd per share)	$ 0.91	$ 0.76	$ 1.69	$ 1.35
Income (loss) from discontinued operations attributable to CVS Caremark (usd per share)	$ 0	$ 0	$ 0	$ 0
Net income attributable to CVS Caremark (usd per share)	$ 0.91	$ 0.76	$ 1.69	$ 1.35
Weighted average basic common shares outstanding (in shares)	1,227	1,278	1,230	1,289
Diluted earnings per common share:
Income from continuing operations attributable to CVS Caremark (usd per share)	$ 0.91	$ 0.75	$ 1.68	$ 1.34
Income (loss) from discontinued operations attributable to CVS Caremark (usd per share)	$ 0	$ 0	$ 0	$ 0
Net income attributable to CVS Caremark (in dollars per share)	$ 0.91	$ 0.75	$ 1.68	$ 1.34
Weighted average diluted common shares outstanding (in shares)	1,236	1,287	1,238	1,298
Dividends declared per common share (usd per share)	$ 0.2250	$ 0.1625	$ 0.45	$ 0.325