Condensed Consolidated Statements of Income (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Income Statement [Abstract]
Net revenues	$ 31,968	$ 30,227	$ 93,979	$ 91,739
Cost of revenues	25,933	24,580	76,527	75,530
Gross profit	6,035	5,647	17,452	16,209
Operating expenses	3,874	3,833	11,624	11,284
Operating profit	2,161	1,814	5,828	4,925
Interest expense, net	122	134	374	397
Income before income tax provision	2,039	1,680	5,454	4,528
Income tax provision	779	669	2,116	1,775
Income from continuing operations	1,260	1,011	3,338	2,753
Loss from discontinued operations, net of tax	(6)	(5)	(7)	(7)
Net income	1,254	1,006	3,331	2,746
Net loss attributable to noncontrolling interest	0	0	0	2
Net income attributable to CVS Caremark	$ 1,254	$ 1,006	$ 3,331	$ 2,748
Basic earnings per common share:
Income from continuing operations attributable to CVS Caremark (usd per share)	$ 1.04	$ 0.80	$ 2.72	$ 2.15
Income (loss) from discontinued operations attributable to CVS Caremark (usd per share)	$ (0.01)	$ 0.00	$ (0.01)	$ (0.01)
Net income attributable to CVS Caremark (usd per share)	$ 1.03	$ 0.80	$ 2.72	$ 2.15
Weighted average basic common shares outstanding (in shares)	1,218	1,265	1,226	1,281
Diluted earnings per common share:
Income from continuing operations attributable to CVS Caremark (usd per share)	$ 1.03	$ 0.79	$ 2.70	$ 2.14
Income (loss) from discontinued operations attributable to CVS Caremark (usd per share)	$ (0.01)	$ 0.00	$ (0.01)	$ (0.01)
Net income attributable to CVS Caremark (in dollars per share)	$ 1.02	$ 0.79	$ 2.70	$ 2.13
Weighted average diluted common shares outstanding (in shares)	1,226	1,274	1,234	1,290
Dividends declared per common share (usd per share)	$ 0.2250	$ 0.1625	$ 0.675	$ 0.4875