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Quarterly report pursuant to Section 13 or 15(d)

Derivative Instruments and Hedging Activities (Narrative) (Details)

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Derivative Instruments and Hedging Activities (Narrative) (Details)
3 Months Ended 6 Months Ended 3 Months Ended 6 Months Ended 3 Months Ended 6 Months Ended 3 Months Ended 6 Months Ended 3 Months Ended 6 Months Ended 3 Months Ended 6 Months Ended 3 Months Ended 6 Months Ended
Jun. 30, 2011
USD ($)
Jun. 30, 2010
USD ($)
Jun. 30, 2011
USD ($)
Jun. 30, 2010
USD ($)
Jun. 30, 2011
Dec. 31, 2010
USD ($)
Jun. 30, 2010
Increase [Member]
Provisional Pricing Arrangements [Member]
Product Revenues [Member]
USD ($)
Jun. 30, 2011
Twelve Month [Member]
Jun. 30, 2011
Twenty Four Month [Member]
Jun. 30, 2011
Accounts Receivable [Member]
USD ($)
Jun. 30, 2011
Derivative Assets (Current) [Member]
Customer Supply Agreements [Member]
USD ($)
Dec. 31, 2010
Derivative Assets (Current) [Member]
Customer Supply Agreements [Member]
USD ($)
Jun. 30, 2011
Foreign Exchange Contract [Member]
USD ($)
Dec. 31, 2010
Foreign Exchange Contract [Member]
USD ($)
Jun. 30, 2010
Foreign Exchange Contract [Member]
Jun. 30, 2011
Foreign Exchange Contracts (Hedge Designation) [Member]
USD ($)
Jun. 30, 2011
Foreign Exchange Contracts (Hedge Designation) [Member]
USD ($)
Jan. 11, 2011
Foreign Exchange Contracts (Hedge Designation) [Member]
CAD
Jun. 30, 2011
Provisional Pricing Arrangements [Member]
USD ($)
Jun. 30, 2011
Provisional Pricing Arrangements [Member]
USD ($)
Jun. 30, 2010
Provisional Pricing Arrangements [Member]
Product Revenues [Member]
USD ($)
Jun. 30, 2011
Changes in Fair Value of Foreign Currency Contracts [Member]
USD ($)
Jun. 30, 2011
Changes in Fair Value of Foreign Currency Contracts [Member]
USD ($)
Jun. 30, 2011
Accumulated Other Comprehensive Income [Member]
Jun. 30, 2011
Customer Supply Agreements [Member]
Product Revenues [Member]
USD ($)
Jun. 30, 2010
Customer Supply Agreements [Member]
Product Revenues [Member]
USD ($)
Jun. 30, 2011
Customer Supply Agreements [Member]
Product Revenues [Member]
USD ($)
Jun. 30, 2010
Customer Supply Agreements [Member]
Product Revenues [Member]
USD ($)
Jun. 30, 2011
Product Revenues [Member]
USD ($)
Jun. 30, 2010
Product Revenues [Member]
USD ($)
Jun. 30, 2011
Product Revenues [Member]
USD ($)
Jun. 30, 2010
Product Revenues [Member]
USD ($)
Percentage of hedging policy allowed anticipated operating cost 75.00% 50.00%
Notional amount of derivative 4,700,000,000
Gains remain in accumulated other comprehensive loss related to the effective cash flow hedge contracts prior to de-designation 3,000,000 4,900,000
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net 387,000,000 429,900,000 488,200,000 797,100,000 289,400,000 309,400,000 46,500,000 48,400,000 71,100,000 68,300,000
Foreign currency cash flow hedge gains to be reclassified to changes in fair value of foreign currency contracts during the next twelve months 6,200,000
Notional amounts of outstanding exchange rate contracts 105,000,000 230,000,000
Amount of Gain/(Loss) Recognized in Income on Derivative (10,000,000) (7,700,000) 389,300,000 731,500,000 7,000,000 11,400,000 46,500,000 48,400,000 71,100,000 68,300,000
Notional amount of hedged portion of purchase price 135,000,000 135,000,000 70,000,000
Derivatives and currency hedges 89,800,000 107,200,000
Derivative Asset, Fair Value 124,300,000 124,300,000 84,600,000 14,100,000
Accounts receivable 317,200,000 317,200,000 352,300,000
Fair value of derivative assets 93,900,000 93,900,000 45,600,000 64,000,000 45,600,000
Derivative assets 110,200,000 110,200,000 82,600,000 15,800,000 15,800,000
Swap resulted in net realized gains 41,500,000 93,100,000
Foreign currency spot rate 1.07 0.85 1.07
Reclassified gains from Accumulated other comprehensive loss related to contracts that settled during the year, recorded the amounts as Product revenues $ 1,900,000 $ 2,200,000