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Fair Value Measurements (Details) (USD $) | Jun. 30, 2012 | Dec. 31, 2011
--- | --- | ---
Fair value measurement, additional disclosure |  |
Cash collateral deposits held by financial counterparties | $ 139,900,000 |
Netting and Collateral |  |
Fair value measurement, additional disclosure |  |
Cash collateral deposits held by financial counterparties | 21,400,000 | 11,800,000
Amount recognized for the obligation to return cash collateral | 63,000,000 |
Amount recognized for the right to reclaim cash collateral | 76,900,000 |
Fair value measured on recurring basis | Level 1 |  |
Assets: |  |
Total assets | 68,793,000 | 14,038,000
Liabilities: |  |
Total liabilities | 94,341,000 | 10,148,000
Fair value measured on recurring basis | Level 1 | Commodity contracts |  |
Assets: |  |
Total assets | 68,793,000 | 14,038,000
Liabilities: |  |
Total liabilities | 94,341,000 | 10,148,000
Fair value measured on recurring basis | Level 2 |  |
Assets: |  |
Total assets | 187,190,000 | 57,449,000
Liabilities: |  |
Debt under Term Loan Facility | 250,000,000 | 250,000,000
Total liabilities | 160,888,000 | 47,796,000
Fair value measured on recurring basis | Level 2 | Commodity contracts |  |
Assets: |  |
Total assets | 179,333,000 | 51,033,000
Liabilities: |  |
Total liabilities | 158,182,000 | 46,754,000
Fair value measured on recurring basis | Level 2 | Foreign currency contracts |  |
Assets: |  |
Total assets | 2,215,000 | 2,994,000
Liabilities: |  |
Total liabilities | 2,098,000 | 1,018,000
Fair value measured on recurring basis | Level 2 | Hedged item inventories |  |
Assets: |  |
Total assets | 5,642,000 | 3,216,000
Liabilities: |  |
Total liabilities | 608,000 | 24,000
Fair value measured on recurring basis | Level 2 | Hedged item commitments |  |
Assets: |  |
Total assets |  | 206,000
Fair value measured on recurring basis | Level 3 |  |
Assets: |  |
Notes receivable | 6,700,000 | 6,800,000
Liabilities: |  |
All other debt | 82,000,000 | 37,100,000
Total liabilities |  | 4,194,000
Fair value measured on recurring basis | Level 3 | Earn-out |  |
Liabilities: |  |
Total liabilities |  | 4,194,000
Fair value measured on recurring basis | Sub-Total |  |
Assets: |  |
Total assets | 255,983,000 | 71,487,000
Liabilities: |  |
Total liabilities | 255,229,000 | 62,138,000
Fair value measured on recurring basis | Sub-Total | Commodity contracts |  |
Assets: |  |
Total assets | 248,126,000 | 65,071,000
Liabilities: |  |
Total liabilities | 252,523,000 | 56,902,000
Fair value measured on recurring basis | Sub-Total | Foreign currency contracts |  |
Assets: |  |
Total assets | 2,215,000 | 2,994,000
Liabilities: |  |
Total liabilities | 2,098,000 | 1,018,000
Fair value measured on recurring basis | Sub-Total | Hedged item inventories |  |
Assets: |  |
Total assets | 5,642,000 | 3,216,000
Liabilities: |  |
Total liabilities | 608,000 | 24,000
Fair value measured on recurring basis | Sub-Total | Hedged item commitments |  |
Assets: |  |
Total assets |  | 206,000
Fair value measured on recurring basis | Sub-Total | Earn-out |  |
Liabilities: |  |
Total liabilities |  | 4,194,000
Fair value measured on recurring basis | Netting and Collateral |  |
Assets: |  |
Total assets | (178,915,000) | (44,168,000)
Liabilities: |  |
Total liabilities | (234,404,000) | (44,184,000)
Fair value measured on recurring basis | Netting and Collateral | Commodity contracts |  |
Assets: |  |
Total assets | (177,205,000) | (43,275,000)
Liabilities: |  |
Total liabilities | (232,694,000) | (43,291,000)
Fair value measured on recurring basis | Netting and Collateral | Foreign currency contracts |  |
Assets: |  |
Total assets | (1,710,000) | (893,000)
Liabilities: |  |
Total liabilities | (1,710,000) | (893,000)
Fair value measured on recurring basis | Total |  |
Assets: |  |
Total assets | 77,068,000 | 27,319,000
Liabilities: |  |
Total liabilities | 20,825,000 | 17,954,000
Fair value measured on recurring basis | Total | Commodity contracts |  |
Assets: |  |
Total assets | 70,921,000 | 21,796,000
Liabilities: |  |
Total liabilities | 19,829,000 | 13,611,000
Fair value measured on recurring basis | Total | Foreign currency contracts |  |
Assets: |  |
Total assets | 505,000 | 2,101,000
Liabilities: |  |
Total liabilities | 388,000 | 125,000
Fair value measured on recurring basis | Total | Hedged item inventories |  |
Assets: |  |
Total assets | 5,642,000 | 3,216,000
Liabilities: |  |
Total liabilities | 608,000 | 24,000
Fair value measured on recurring basis | Total | Hedged item commitments |  |
Assets: |  |
Total assets |  | 206,000
Fair value measured on recurring basis | Total | Earn-out |  |
Liabilities: |  |
Total liabilities |  | $ 4,194,000

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- Definition The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. + References No definition available. + Details
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