Derivative Instruments And Hedging Activities (Narrative) (Details) |
3 Months Ended | 9 Months Ended | 3 Months Ended | 9 Months Ended | 3 Months Ended | 9 Months Ended | 3 Months Ended | 9 Months Ended | 3 Months Ended | 9 Months Ended | 9 Months Ended | 3 Months Ended | 9 Months Ended | 3 Months Ended | 9 Months Ended | |||||||||||||||||||||
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Sep. 30, 2011
USD ($)
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Sep. 30, 2010
USD ($)
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Sep. 30, 2011
USD ($)
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Sep. 30, 2010
USD ($)
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Sep. 30, 2011 |
Dec. 31, 2010
USD ($)
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Sep. 30, 2010
Increase [Member]
Provisional Pricing Arrangements [Member]
Product Revenues [Member]
USD ($)
|
Sep. 30, 2011
Minimum [Member]
Twelve Month [Member]
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Sep. 30, 2011
Maximum [Member]
Twelve Month [Member]
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Sep. 30, 2011
Twenty Four Month [Member]
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Sep. 30, 2011
Fifteen Month [Member]
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Sep. 30, 2011
Accounts Receivable [Member]
USD ($)
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Sep. 30, 2011
Derivative Assets (Current) [Member]
Customer Supply Agreements [Member]
USD ($)
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Dec. 31, 2010
Derivative Assets (Current) [Member]
Customer Supply Agreements [Member]
USD ($)
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Sep. 30, 2011
Foreign Exchange Contracts [Member]
USD ($)
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Dec. 31, 2010
Foreign Exchange Contracts [Member]
USD ($)
|
Sep. 30, 2010
Foreign Exchange Contracts [Member]
|
Sep. 30, 2011
Foreign Exchange Contracts (Hedge Designation) [Member]
USD ($)
|
Sep. 30, 2011
Foreign Exchange Contracts (Hedge Designation) [Member]
USD ($)
|
Jan. 11, 2011
Foreign Exchange Contracts (Hedge Designation) [Member]
CAD
|
Sep. 30, 2011
Provisional Pricing Arrangements [Member]
USD ($)
|
Sep. 30, 2011
Provisional Pricing Arrangements [Member]
USD ($)
|
Sep. 30, 2010
Provisional Pricing Arrangements [Member]
Product Revenues [Member]
USD ($)
|
Sep. 30, 2011
Changes In Fair Value Of Foreign Currency Contracts [Member]
USD ($)
|
Sep. 30, 2011
Changes In Fair Value Of Foreign Currency Contracts [Member]
USD ($)
|
Sep. 30, 2011
Accumulated Other Comprehensive Income [Member]
|
Sep. 30, 2010
Customer Supply Agreements [Member]
USD ($)
|
Sep. 30, 2011
Customer Supply Agreements [Member]
Product Revenues [Member]
USD ($)
|
Sep. 30, 2010
Customer Supply Agreements [Member]
Product Revenues [Member]
USD ($)
|
Sep. 30, 2011
Customer Supply Agreements [Member]
Product Revenues [Member]
USD ($)
|
Sep. 30, 2010
Customer Supply Agreements [Member]
Product Revenues [Member]
USD ($)
|
Sep. 30, 2011
Product Revenues [Member]
USD ($)
|
Sep. 30, 2010
Product Revenues [Member]
USD ($)
|
Sep. 30, 2011
Product Revenues [Member]
USD ($)
|
Sep. 30, 2010
Product Revenues [Member]
USD ($)
|
Sep. 30, 2011
Pricing Settlement [Member]
USD ($)
|
|
Percentage of hedging policy allowed anticipated operating cost | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | 40.00% | 75.00% | 50.00% | 10.00% | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý |
Notional amount of derivative | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | 4,700,000,000 | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý |
Gains remain in accumulated other comprehensive loss related to the effective cash flow hedge contracts prior to de-designation | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | 15,200,000 | 10,300,000 | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý |
Derivative instruments not designated as hedging instruments, gain (loss), net | 240,600,000 | 290,100,000 | 849,900,000 | 1,087,700,000 | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | 193,000,000 | 623,500,000 | Ìý | Ìý | Ìý | Ìý | Ìý | 53,800,000 | 25,100,000 | 124,900,000 | 93,400,000 | Ìý | Ìý | Ìý | Ìý | 309,400,000 |
Foreign currency cash flow hedge gains to be reclassified to changes in fair value of foreign currency contracts during the next twelve months | Ìý | Ìý | 10,300,000 | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý |
Notional amounts of outstanding exchange rate contracts | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | 45,000,000 | 230,000,000 | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý |
Amount of gain/(loss) recognized in income on derivative | Ìý | (32,500,000) | Ìý | (24,800,000) | Ìý | Ìý | 229,200,000 | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | 960,700,000 | 6,200,000 | 7,400,000 | Ìý | 455,700,000 | Ìý | Ìý | Ìý | Ìý | 53,800,000 | 25,100,000 | 124,900,000 | 93,400,000 | Ìý |
Notional amount of hedged portion of purchase price | 315,000,000 | Ìý | 315,000,000 | Ìý | Ìý | 70,000,000 | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý |
Derivative asset, fair value | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | 49,000,000 | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý |
Fair value of derivative assets | 116,800,000 | Ìý | 116,800,000 | Ìý | Ìý | 45,600,000 | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | 67,800,000 | 45,600,000 | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý |
Derivative assets | 73,600,000 | Ìý | 73,600,000 | Ìý | Ìý | 82,600,000 | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý |
Swap resulted in net realized gains | Ìý | Ìý | 93,100,000 | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý |
Foreign currency spot rate | Ìý | Ìý | Ìý | Ìý | 0.9700 | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | 0.97 | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | 0.9700 | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý |
Reclassified gains from accumulated other comprehensive loss related to contracts that settled during the year, recorded the amounts as product revenues | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | $ 1,800,000 | Ìý | $ 4,000,000 | Ìý | Ìý |