Consolidated Statement of Operations (Unaudited) (USD $) In Millions, except Per Share data	3 Months Ended				6 Months Ended
	Jun. 30, 2011		Jun. 30, 2010		Jun. 30, 2011		Jun. 30, 2010
Consolidated Statement of Operations [Abstract]
Revenues	$ 11,361.4	[1]	$ 11,288.8	[1]	$ 22,455.9	[1]	$ 22,427.2	[1]
Cost of revenues	10,577.3	[1]	10,531.3	[1]	20,926.3	[1]	21,006.5	[1]
Gross profit	784.1		757.5		1,529.6		1,420.7
Selling, general and administrative	204.8		227.2		397.9		435.7
Operating income	579.3		530.3		1,131.7		985.0
Other (expense) income:
Interest income	1.5		0.5		1.9		2.2
Interest expense	(50.3)		(42.0)		(90.0)		(84.8)
Total other (expense) income	(48.8)		(41.5)		(88.1)		(82.6)
Income before income taxes	530.5		488.8		1,043.6		902.4
Provision for income taxes	196.3		181.5		382.9		334.5
Net income from continuing operations	334.2		307.3		660.7		567.9
Net loss from discontinued operations, net of tax	0		(17.4)		0		(17.8)
Net income	$ 334.2		$ 289.9		$ 660.7		$ 550.1
Weighted average number of common shares outstanding during the period:
Basic	502.6		544.5		515.7		547.1
Diluted	507.0		550.1		520.3		552.9
Basic earnings (loss) per share:
Continuing operations	$ 0.66		$ 0.56		$ 1.28		$ 1.04
Discontinued operations			$ (0.03)				$ (0.03)
Net earnings	$ 0.66		$ 0.53		$ 1.28		$ 1.01
Diluted earnings (loss) per share:
Continuing operations	$ 0.66		$ 0.56		$ 1.27		$ 1.03
Discontinued operations			$ (0.03)				$ (0.03)
Net earnings	$ 0.66		$ 0.53		$ 1.27		$ 0.99

[1] Includes retail pharmacy co-payments of $1,457.1 million and $1,547.3 million for the three months ended June 30, 2011 and 2010, respectively and $2,983.6 million and $3,209.9 million for the six months ended June 30, 2011 and 2010, respectively.