Consolidated Statement of Cash Flows (Unaudited) (USD $) In Millions	9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010
Cash flows from operating activities:
Net income	$ 985.4	$ 851.6
Net loss from discontinued operations, net of tax	0	23.4
Net income from continuing operations	985.4	875.0
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	187.5	180.9
Non-cash adjustments to net income	152.9	140.7
Deferred financing fees	44.9	4.1
Changes in operating assets and liabilities:
Accounts receivable	(58.1)	706.6
Claims and rebates payable	44.4	(253.2)
Other net changes in operating assets and liabilities	302.9	175.6
Net cash provided by operating activities - continuing operations	1,659.9	1,829.7
Net cash provided by operating activities - discontinued operations		12.3
Net cash flows provided by operating activities	1,659.9	1,842.0
Cash flows from investing activities:
Purchases of property and equipment	(98.1)	(84.6)
Other	8.5	5.8
Net cash used in investing activities - continuing operations	(89.6)	(78.8)
Net cash used in investing activities - discontinued operations		(0.8)
Net cash provided by investing activities	(89.6)	(79.6)
Cash flows from financing activities:
Treasury stock acquired	(2,515.7)	(1,276.2)
Proceeds from long-term debt, net of discounts	1,494.0
Deferred financing fees	(62.7)	(3.9)
Net proceeds from employee stock plans	28.9	19.3
Tax benefit relating to employee stock compensation	27.3	32.9
Repayment of long-term debt	(0.1)	(1,340.1)
Net cash used in financing activities	(1,028.3)	(2,568.0)
Effect of foreign currency translation adjustment	(3.1)	2.7
Net increase (decrease) in cash and cash equivalents	538.9	(802.9)
Cash and cash equivalents at beginning of period	523.7	1,070.4
Cash and cash equivalents at end of period	$ 1,062.6	$ 267.5