Fair Value of Financial Instruments (Fair Value, Assets and Liabilities Measured on Recurring Basis) (Details) (USD $) In Millions	Jun. 30, 2011		Dec. 31, 2010
Assets:
Cash equivalents	$ 130.0		$ 1,307.2
Derivative assets	93.9		45.6
U.S. marketable securities	15.1		22.0
International marketable securities	41.8		63.9
Foreign exchange contracts	30.4		39.0
Total	311.2		1,477.7
Quoted Prices in Active Markets for Identical Assets/Liabilities (Level 1) [Member]
Assets:
Cash equivalents	130.0		1,307.2
Derivative assets
U.S. marketable securities	15.1		22.0
International marketable securities	41.8		63.9
Foreign exchange contracts
Total	186.9		1,393.1
Significant Other Observable Inputs (Level 2) [Member]
Assets:
Cash equivalents
Derivative assets	29.9	[1]
U.S. marketable securities
International marketable securities
Foreign exchange contracts	30.4		39.0
Total	60.3		39.0
Significant Unobservable Input (Level 3) [Member]
Assets:
Cash equivalents
Derivative assets	64.0		45.6
U.S. marketable securities
International marketable securities
Foreign exchange contracts
Total	$ 64.0		$ 45.6

[1] Derivative assets includes $14.1 million classified as Accounts receivable on the Statement of Unaudited Condensed Consolidated Financial Position as of June 30, 2011. Refer to NOTE 3 - DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES for further information.