Consolidated Statements of Cash Flows (USD $)	6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011
Operating Activities:
Net earnings	$ 790,000,000	$ 597,000,000
Adjustments to reconcile net earnings to net cash flow provided by (used for) operating activities:
Depreciation and amortization	263,000,000	278,000,000
Stock-based compensation	81,000,000	75,000,000
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	19,000,000	21,000,000
Change in assets and liabilities, net of effects of acquisitions	119,000,000	623,000,000
Net cash flow provided by (used for) operating activities	1,258,000,000	1,594,000,000
Investing Activities:
Acquisitions, net of cash acquired	(69,000,000)	(55,000,000)
Capital expenditures	(93,000,000)	(95,000,000)
Investments in and advances to investee companies	(39,000,000)	(42,000,000)
Proceeds from dispositions	1,000,000	13,000,000
Other investing activities	6,000,000	8,000,000
Net cash flow provided by (used for) investing activities	(194,000,000)	(171,000,000)
Financing Activities:
Proceeds from issuance of notes	1,567,000,000	4,000,000
Repayment of notes	(700,000,000)	(2,000,000)
Payment of capital lease obligations	(10,000,000)	(9,000,000)
Payment of contingent consideration	(33,000,000)	0
Dividends	(135,000,000)	(73,000,000)
Purchase of Company common stock	(564,000,000)	(500,000,000)
Payment of payroll taxes in lieu of issuing shares for stock-based compensation	(105,000,000)	(78,000,000)
Proceeds from exercise of stock options	71,000,000	45,000,000
Excess tax benefit from stock-based compensation	73,000,000	61,000,000
Other financing activities	0	(5,000,000)
Net cash flow provided by (used for) financing activities	164,000,000	(557,000,000)
Net increase (decrease) in cash and cash equivalents	1,228,000,000	866,000,000
Cash and cash equivalents at beginning of period	660,000,000	480,000,000
Cash and cash equivalents at end of period	1,888,000,000	1,346,000,000
Supplemental disclosure of cash flow information
Cash paid for interest	196,000,000	210,000,000
Cash paid for income taxes	$ 265,000,000	$ 158,000,000