The amount of net gains and losses recognized in income during the period on derivative instruments designated and qualifying as hedging instruments in fair value hedges and related hedged items designated and qualifying in fair value hedges, on derivative instruments designated and qualifying as hedging instruments in cash flow hedges, and on derivative instruments not designated as hedging instruments.

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The aggregate foreign currency transaction gain (loss) (both realized and unrealized) included in determining net income for the reporting period. Excludes foreign currency transactions designated as hedges of net investment in a foreign entity and intercompany foreign currency transactions that are of a long-term nature, when the entities to the transaction are consolidated, combined, or accounted for by the equity method in the reporting enterprise's financial statements. For certain enterprises, primarily banks, that are dealers in foreign exchange, foreign currency transaction gains (losses) may be disclosed as dealer gains (losses).

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Fair Value Measurements (Narrative) (Details) In Millions	3 Months Ended		6 Months Ended						3 Months Ended		6 Months Ended
Fair Value Measurements (Narrative) (Details) In Millions	Jun. 30, 2011 USD ($)	Jun. 30, 2010 USD ($)	Jun. 30, 2011 USD ($)	Jun. 30, 2010 USD ($)	Jun. 30, 2011 GBP (£)	Jun. 30, 2011 EUR (€)	Dec. 31, 2010 GBP (£)	Dec. 31, 2010 EUR (€)	Jun. 30, 2011 Not Designated as Hedging Instrument [Member] Other Income [Member] Foreign Exchange Forward [Member] USD ($)	Jun. 30, 2010 Not Designated as Hedging Instrument [Member] Other Income [Member] Foreign Exchange Forward [Member] USD ($)	Jun. 30, 2011 Not Designated as Hedging Instrument [Member] Other Income [Member] Foreign Exchange Forward [Member] USD ($)	Jun. 30, 2010 Not Designated as Hedging Instrument [Member] Other Income [Member] Foreign Exchange Forward [Member] USD ($)
Notional amount of outstanding currency forward contracts entered into to hedge Euro dominated sales						€ 24.5		€ 21.0
Amounts reclassified as revenue related to hedged revenue transactions									(1.0)	1.9	(3.2)	4.1
Notional amount of currency forward contracts to hedge non-functional currency denominated net monetary assets					2.7	22.5	2.2	26.0
Gains (losses) recognized as interest and other income, net, related to derivative instruments used to hedge against balance sheet foreign currency exposures									(1.0)	1.9	(3.2)	4.1
Foreign currency transaction gain (loss) before tax	1.0	(2.2)	3.3	(4.9)
Net gains (losses) reclassified to revenue	$ (1.0)	$ 1.9	$ (1.6)	$ 2.5