Consolidated Statements of Cash Flows (USD $)	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Operating Activities:
Net earnings	$ 363,000,000	$ 202,000,000
Adjustments to reconcile net earnings to net cash flow provided by (used for) operating activities:
Depreciation and amortization	131,000,000	139,000,000
Stock-based compensation	42,000,000	34,000,000
Impairment charges	11,000,000	0
Gain on early extinguishment of debt	(25,000,000)	0
Equity in loss of investee companies, net of tax and distributions	6,000,000	16,000,000
Change in assets and liabilities, net of effects of acquisitions	118,000,000	503,000,000
Net cash flow provided by (used for) operating activities	646,000,000	894,000,000
Investing Activities:
Acquisitions, net of cash acquired	(69,000,000)	(53,000,000)
Capital expenditures	(39,000,000)	(41,000,000)
Investments in and advances to investee companies	(34,000,000)	(26,000,000)
Proceeds from dispositions	0	13,000,000
Other investing activities	2,000,000	4,000,000
Net cash flow provided by (used for) investing activities	(140,000,000)	(103,000,000)
Financing Activities:
Proceeds from issuance of notes	690,000,000	0
Repayment of notes	(700,000,000)	(2,000,000)
Payment of capital lease obligations	(5,000,000)	(4,000,000)
Payment of contingent consideration	(33,000,000)	0
Dividends	(69,000,000)	(37,000,000)
Purchase of Company common stock	(260,000,000)	(250,000,000)
Payment of payroll taxes in lieu of issuing shares for stock-based compensation	(87,000,000)	(46,000,000)
Proceeds from exercise of stock options	36,000,000	10,000,000
Excess tax benefit from stock-based compensation	56,000,000	35,000,000
Other financing activities	0	(5,000,000)
Net cash flow provided by (used for) financing activities	(372,000,000)	(299,000,000)
Net increase (decrease) in cash and cash equivalents	134,000,000	492,000,000
Cash and cash equivalents at beginning of period	660,000,000	480,000,000
Cash and cash equivalents at end of period	794,000,000	972,000,000
Supplemental disclosure of cash flow information
Cash paid for interest	103,000,000	104,000,000
Cash paid for income taxes	$ 21,000,000	$ 19,000,000