Condensed Consolidated Balance Sheets (USD $) In Millions, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Current Assets [Abstract]
Cash and cash equivalents	$ 1,665.3	$ 1,781.2
Short-term investments, at cost	14.7	23.8
Accounts receivable, net of allowance for doubtful accounts of $38.2 and $40.6	6,041.5	6,632.0
Work in process	698.7	640.3
Other current assets	1,437.3	1,344.2
Total Current Assets	9,857.5	10,421.5
Property, Plant and Equipment, at cost, less accumulated depreciation of $1,200.3 and $1,186.1	698.2	682.9
Investments In Affiliates	185.8	184.2
Goodwill	8,599.6	8,456.3
Intangible Assets, net of accumulated amortization of $449.3 and $416.9	445.1	468.4
Other Assets	320.3	292.1
TOTAL ASSETS	20,106.5	20,505.4
Current Liabilities [Abstract]
Accounts payable	7,461.1	8,060.0
Customer advances	1,279.0	1,225.3
Current portion of debt	0.4	0.7
Short-term borrowings	12.4	9.5
Taxes payable	111.8	237.0
Other current liabilities	1,825.1	2,138.5
Total Current Liabilities	10,689.8	11,671.0
Long-Term Notes Payable	3,266.7	2,523.5
Convertible Debt	659.4	659.4
Long-Term Liabilities	627.2	602.0
Long-Term Deferred Tax Liabilities	919.6	867.6
Commitments and Contingent Liablities (See Note 11)
Temporary Equity - Redeemable Noncontrolling Interests	208.7	202.1
Shareholders' Equity [Abstract]
Preferred stock	0	0
Common stock	59.6	59.6
Additional paid-in capital	952.8	1,043.5
Retained earnings	8,045.8	7,724.1
Accumulated other comprehensive income (loss)	(216.2)	(191.7)
Treasury stock, at cost	(5,572.1)	(5,131.2)
Total Shareholders' Equity	3,269.9	3,504.3
Noncontrolling interests	465.2	475.5
Total Equity	3,735.1	3,979.8
TOTAL LIABILITIES AND EQUITY	$ 20,106.5	$ 20,505.4