Consolidated Statement of Operations (Unaudited) (USD $) In Millions, except Per Share data	3 Months Ended				9 Months Ended
	Sep. 30, 2011		Sep. 30, 2010		Sep. 30, 2011		Sep. 30, 2010
Consolidated Statement of Operations [Abstract]
Revenues	$ 11,571.0	[1]	$ 11,251.8	[1]	$ 34,026.9	[1]	$ 33,679.0	[1]
Cost of revenues	10,735.2	[1]	10,487.7	[1]	31,661.5	[1]	31,494.2	[1]
Gross profit	835.8		764.1		2,365.4		2,184.8
Selling, general and administrative	230.7		236.1		628.6		671.8
Operating income	605.1		528.0		1,736.8		1,513.0
Other (expense) income:
Interest income	5.9		2.2		7.8		4.4
Interest expense and other	(94.3)		(42.2)		(184.3)		(127.0)
Total other (expense) income	(88.4)		(40.0)		(176.5)		(122.6)
Income before income taxes	516.7		488.0		1,560.3		1,390.4
Provision for income taxes	192.0		180.9		574.9		515.4
Net income from continuing operations	324.7		307.1		985.4		875.0
Net loss from discontinued operations, net of tax	0		(5.6)		0		(23.4)
Net income	$ 324.7		$ 301.5		$ 985.4		$ 851.6
Weighted average number of common shares outstanding during the period:
Basic	487.2		531.7		506.1		541.9
Diluted	490.8		537.0		510.3		547.5
Basic earnings (loss) per share:
Continuing operations	$ 0.67		$ 0.58		$ 1.95		$ 1.61
Discontinued operations			$ (0.01)				$ (0.04)
Net earnings	$ 0.67		$ 0.57		$ 1.95		$ 1.57
Diluted earnings (loss) per share:
Continuing operations	$ 0.66		$ 0.57		$ 1.93		$ 1.60
Discontinued operations			$ (0.01)				$ (0.04)
Net earnings	$ 0.66		$ 0.56		$ 1.93		$ 1.56

[1] Includes retail pharmacy co-payments of $1,390.4 million and $1,478.5 million for the three months ended September 30, 2011 and 2010, respectively and $4,374.0 million and $4,688.4 million for the nine months ended September 30, 2011 and 2010, respectively.