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Fair Value Measurements (Tables) | 9 Months Ended
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Sep. 30, 2016
Fair Value Disclosures [Abstract] |
Schedule of assets and liabilities measured at estimated fair value on a recurring basis | The following table presents information about our financial assets and liabilities that are measured at estimated fair value on a recurring basis (in millions):
|  | Level 1 |  |  | Level 2 |  |  | Level 3 |  |  | Sub-Total |  |  | Netting and Collateral |  |  | Total |
As of September 30, 2016 |  |  |  |  |  |  |  |  |  |  |  |
Assets: |  |  |  |  |  |  |  |  |  |  |  |
Commodity contracts |  | $ | 168.7 |  |  | $ | 87.9 |  |  | $ | 0.6 |  |  | $ | 257.2 |  |  | $ | (213.8 | ) |  | $ | 43.3 |
Foreign currency contracts |  | — |  |  | 11.6 |  |  | — |  |  | 11.6 |  |  | (4.6 | ) |  | 7.0 |
Inventories |  | — |  |  | 3.1 |  |  | — |  |  | 3.1 |  |  | — |  |  | 3.1 |
Cash surrender value of life insurance |  | — |  |  | 3.9 |  |  | — |  |  | 3.9 |  |  | — |  |  | 3.9 |
Total |  | $ | 168.7 |  |  | $ | 106.5 |  |  | $ | 0.6 |  |  | $ | 275.8 |  |  | $ | (218.4 | ) |  | $ | 57.3 |
Liabilities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commodity contracts |  | $ | 179.4 |  |  | $ | 90.2 |  |  | $ | 0.3 |  |  | $ | 269.9 |  |  | $ | (232.8 | ) |  | $ | 37.0 |
Foreign currency contracts |  | — |  |  | 6.5 |  |  | — |  |  | 6.5 |  |  | (4.6 | ) |  | 1.9 |
Firm Commitments |  | — |  |  | 3.5 |  |  | — |  |  | 3.5 |  |  | — |  |  | 3.5 |
Total |  | $ | 179.4 |  |  | $ | 100.2 |  |  | $ | 0.3 |  |  | $ | 279.9 |  |  | $ | (237.4 | ) |  | $ | 42.4 |
As of December 31, 2015 |  |  |  |  |  |  |  |  |  |  |  |
Assets: |  |  |  |  |  |  |  |  |  |  |  |
Commodity contracts |  | $ | 255.4 |  |  | $ | 251.9 |  |  | $ | 3.2 |  |  | $ | 510.5 |  |  | $ | (279.0 | ) |  | $ | 231.5 |
Foreign currency contracts |  | — |  |  | 12.4 |  |  | — |  |  | 12.4 |  |  | (4.1 | ) |  | 8.3 |
Cash surrender value of life insurance |  | — |  |  | 2.4 |  |  | — |  |  | 2.4 |  |  | — |  |  | 2.4 |
Total |  | $ | 255.4 |  |  | $ | 266.7 |  |  | $ | 3.2 |  |  | $ | 525.3 |  |  | $ | (283.1 | ) |  | $ | 242.2 |
Liabilities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commodity contracts |  | $ | 340.1 |  |  | $ | 123.4 |  |  | $ | 0.2 |  |  | $ | 463.7 |  |  | $ | (389.6 | ) |  | $ | 74.1 |
Foreign currency contracts |  | — |  |  | 5.0 |  |  | — |  |  | 5.0 |  |  | (4.1 | ) |  | 0.9 |
Inventories |  | — |  |  | 14.3 |  |  | — |  |  | 14.3 |  |  | — |  |  | 14.3 |
Total |  | $ | 340.1 |  |  | $ | 142.7 |  |  | $ | 0.2 |  |  | $ | 483.0 |  |  | $ | (393.7 | ) |  | $ | 89.3 |
Schedule of derivative instruments at fair value and their locations on the balance sheets | The following table presents information regarding the balance sheet location of our commodity and foreign currency contracts net assets and liabilities (in millions):
|  | As of |
|  | September 30, 2016 |  |  | December 31, 2015 |
Commodity Contracts |  |  |  |
Assets: |  |  |  |
Short-term derivative assets, net |  | $ | 28.1 |  |  | $ | 212.6 |
Identifiable intangible and other non-current assets |  | 15.2 |  |  | 18.9 |
Total net assets |  | $ | 43.3 |  |  | $ | 231.5 |
Liabilities: |  |  |  |
Accrued expenses and other current liabilities |  | $ | 31.9 |  |  | $ | 68.7 |
Other long-term liabilities |  | 5.2 |  |  | 5.4 |
Total net liabilities |  | $ | 37.0 |  |  | $ | 74.1 |
Foreign Currency Contracts |  |  |  |
Assets: |  |  |  |
Short-term derivative assets, net |  | $ | 5.7 |  |  | $ | 7.6 |
Identifiable intangible and other non-current assets |  | 1.3 |  |  | 0.7 |
Total net assets |  | $ | 7.0 |  |  | $ | 8.3 |
Liabilities: |  |  |  |
Accrued expenses and other current liabilities |  | $ | 1.9 |  |  | $ | 0.9 |
Total net liabilities |  | $ | 1.9 |  |  | $ | 0.9 |
Schedule of assets and liabilities that are measured at fair value on a recurring basis that utilized Level 3 inputs | The following table presents information about our assets and liabilities that are measured at fair value on a recurring basis that utilized Level 3 inputs for the periods presented (in millions):
|  | Beginning of Period |  |  | Realized and Unrealized Gains (Losses) Included in Earnings |  |  | Settlements |  |  | Transfers into Level 3 |  |  | End of Period |  |  | Change in Unrealized Gains (Losses) Relating to Assets and Liabilities that are Held at end of Period |  |  | Location of Realized and Unrealized Gains (Losses)Included in Earnings
Three months ended September 30, 2016 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Assets: |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commodity contracts |  | $ | 0.5 |  |  | $ | 0.1 |  |  | $ | — |  |  | $ | — |  |  | $ | 0.6 |  |  | $ | 0.2 |  |  | Revenue
Liabilities: |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commodity contracts |  | $ | 0.3 |  |  | $ | (0.1 | ) |  | $ | — |  |  | $ | 0.1 |  |  | $ | 0.3 |  |  | $ | 0.2 |  |  | Cost of revenue
Three months ended September 30, 2015 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Assets: |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commodity contracts |  | $ | 0.5 |  |  | $ | (0.1 | ) |  | $ | 0.1 |  |  | $ | 1.0 |  |  | $ | 1.3 |  |  | $ | 1.0 |  |  | Revenue
Liabilities: |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commodity contracts |  | $ | 0.4 |  |  | $ | 0.4 |  |  | $ | — |  |  | $ | (0.1 | ) |  | $ | 0.1 |  |  | $ | 0.5 |  |  | Cost of Revenue
Nine months ended September 30, 2016 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Assets: |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commodity contracts |  | $ | 3.3 |  |  | $ | (2.3 | ) |  | $ | 1.8 |  |  | $ | 1.3 |  |  | $ | 0.6 |  |  | $ | (2.2 | ) |  | Revenue
Liabilities: |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commodity contracts |  | $ | 0.2 |  |  | $ | (0.2 | ) |  | $ | — |  |  | $ | 0.1 |  |  | $ | 0.3 |  |  | $ | — |  |  | Cost of revenue
Nine months ended September 30, 2015 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Assets: |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commodity contracts |  | $ | 4.2 |  |  | $ | 0.7 |  |  | $ | 4.6 |  |  | $ | 1.0 |  |  | $ | 1.3 |  |  | $ | 1.4 |  |  | Revenue
Liabilities: |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commodity contracts |  | $ | 1.3 |  |  | $ | 0.8 |  |  | $ | 0.5 |  |  | $ | (0.1 | ) |  | $ | 0.1 |  |  | $ | 0.9 |  |  | Cost of Revenue

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- Definition Tabular disclosure of the fair value of financial instruments, including financial assets and financial liabilities, and the measurements of those instruments, assets, and liabilities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=73719730&loc=d3e13476-108611 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19207-110258 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=73719730&loc=d3e13467-108611 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6447952&loc=d3e13220-108610 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 30 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6957238&loc=d3e14172-108612 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 10 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=73719730&loc=d3e13433-108611 + Details
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- Definition Tabular disclosure of assets and liabilities, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, that are measured at fair value on a recurring basis. The disclosures contemplated herein include the fair value measurements at the reporting date by the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19190-110258 + Details
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