Derivative Instruments (Narrative) (Details) (USD $) | 9 Months Ended | 3 Months Ended | 9 Months Ended | |||||
|---|---|---|---|---|---|---|---|---|
Sep. 30, 2011 | Dec. 31, 2010 | Sep. 30, 2011
Foreign Exchange [Member]
Cash Flow Hedges [Member] | Sep. 30, 2011
Foreign Exchange [Member]
Not Designated [Member] | Sep. 30, 2011
Not Designated [Member] | Sep. 30, 2010
Not Designated [Member] | Sep. 30, 2011
Not Designated [Member] | Sep. 30, 2010
Not Designated [Member] | |
| Derivative Instruments, Gain (Loss) [Line Items] | ||||||||
| Net foreign currency derivative assets included on balance sheet | $ 7,100,000 | $ 16,400,000 | ||||||
| Aggregate cash flow hedges outstanding | 249,100,000 | 38,900,000 | ||||||
| Singapore dollars | 112,900,000 | 3,800,000 | ||||||
| British pounds | 80,600,000 | |||||||
| Euros | 22,000,000 | |||||||
| Australian dollars | 27,400,000 | 9,600,000 | ||||||
| Swiss francs | 10,300,000 | |||||||
| Indonesian rupiahs | 8,000,000 | |||||||
| Other currencies | 6,200,000 | 7,200,000 | ||||||
| Net gain (Loss) on derivatives not designated as hedging instruments | (800,000) | 3,600,000 | (300,000) | 2,500,000 | ||||
| Estimated amount of net gains associated with derivative instruments, net of tax | $ 3,300,000 | |||||||