Fair Value Of Financial Instruments (Fair Value, Assets And Liabilities Measured On Recurring Basis) (Details) (USD $) In Millions	Sep. 30, 2011		Dec. 31, 2010
Cash equivalents	$ 368.6		$ 1,307.2
Derivative assets	116.8		45.6
U.S. marketable securities			22.0
International marketable securities	28.4		63.9
Foreign exchange contracts	5.8		39.0
Total	519.6		1,477.7
Foreign exchange contracts	15.9
Total	15.9
Accounts Receivable [Member]
Derivative asset, fair value	49.0
Quoted Prices In Active Markets For Identical Assets/Liabilities (Level 1) [Member]
Cash equivalents	368.6		1,307.2
Derivative assets
U.S. marketable securities			22.0
International marketable securities	28.4		63.9
Foreign exchange contracts
Total	397.0		1,393.1
Significant Other Observable Inputs (Level 2) [Member]
Cash equivalents
Derivative assets	49.0	[1]
U.S. marketable securities
International marketable securities
Foreign exchange contracts	5.8		39.0
Total	54.8		39.0
Foreign exchange contracts	15.9
Total	15.9
Significant Unobservable Inputs (Level 3) [Member]
Cash equivalents
Derivative assets	67.8		45.6
U.S. marketable securities
International marketable securities
Foreign exchange contracts
Total	$ 67.8		$ 45.6

[1] Derivative assets includes $49.0 million classifed as Accounts receivable on the Statement of Unaudited Condensed Consolidated Financial Position as of September 30, 2011. Refer to NOTE 3 - DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES for further information.