v2.4.0.8

Risk Management Activities (Details) (USD $) | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2013 | Jun. 30, 2012 | Jun. 30, 2013 | Jun. 30, 2012 | Dec. 31, 2012
Derivatives, Fair Value [Line Items] |  |  |  |  |
Derivatives Assets, Current | $ 105,667,000 |  | $ 105,667,000 |  | $ 166,135,000
Derivative Liabilities, Current | 5,482,000 |  | 5,482,000 |  | 7,617,000
Foreign Currency Exchange Rate Derivative [Abstract] |  |  |  |  |
After-Tax Net Impact Other Comprehensive Income Increase (Decrease) From The Foreign Currency Swap | (700,000) | (900,000) | 1,000,000 | 700,000 |
Interest Rate Derivative [Abstract] |  |  |  |  |
Interest Rate Swap, Notional Amount | 350,000,000 |  | 350,000,000 |  |
After-Tax Net Impact Other Comprehensive Income Increase (Decrease) From Interest Rate Swap | 400,000 | 100,000 | 800,000 | (200,000) |
Derivative Collateral [Abstract] |  |  |  |  |
Collateral Held on Derivative | 5,000,000 |  | 5,000,000 |  | 6,000,000
Crude Oil and Natural Gas Derivative Contracts [Member] | Assets From Price Risk Management Activities [Member] |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |
Derivatives Assets, Current | 106,000,000 |  | 106,000,000 |  | 166,000,000
Derivative Assets, Current, Gross | 163,000,000 |  | 163,000,000 |  | 271,000,000
Derivative Liabilities, Current, Gross | 57,000,000 |  | 57,000,000 |  | 105,000,000
Crude Oil and Natural Gas Derivative Contracts [Member] | Liabilities From Price Risk Management Activities [Member] |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |
Derivative Liabilities, Current | 5,000,000 |  | 5,000,000 |  | 8,000,000
Derivative Assets, Current, Gross | 57,000,000 |  | 57,000,000 |  | 105,000,000
Derivative Assets, Noncurrent, Gross | 3,000,000 |  | 3,000,000 |  |
Derivative Liabilities, Current, Gross | 62,000,000 |  | 62,000,000 |  | 113,000,000
Derivative Liabilities, Noncurrent, Gross | 4,000,000 |  | 4,000,000 |  | 13,000,000
Crude Oil and Natural Gas Derivative Contracts [Member] | Other Assets [Member] |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |
Other Assets | 7,000,000 |  | 7,000,000 |  | 0
Derivative Assets, Noncurrent, Gross | 10,000,000 |  | 10,000,000 |  |
Derivative Liabilities, Noncurrent, Gross | 3,000,000 |  | 3,000,000 |  |
Crude Oil and Natural Gas Derivative Contracts [Member] | Other Liabilities [Member] |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |
Other Liabilities | 1,000,000 |  | 1,000,000 |  | 13,000,000
Foreign Currency Swap [Member] | Other Current Liabilities [Member] |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |
Derivative Liabilities, Current | 43,000,000 |  | 43,000,000 |  | 0
Foreign Currency Swap [Member] | Other Liabilities [Member] |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |
Other Liabilities | 0 |  | 0 |  | 55,000,000
Interest Rate Swap [Member] | Other Current Liabilities [Member] |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |
Derivative Liabilities, Current | 2,000,000 |  | 2,000,000 |  | 0
Interest Rate Swap [Member] | Other Liabilities [Member] |  |  |  |  |
Derivatives, Fair Value [Line Items] |  |  |  |  |
Other Liabilities | $ 0 |  | $ 0 |  | $ 4,000,000
Crude Oil Derivative Contracts January (closed) [Member] |  |  |  |  |
Derivative [Line Items] |  |  |  |  |
Volume (Bbld) |  |  | 101,000 |  |
Derivative Weighted Average Price Crude Oil ($/Bbl) |  |  | 99.29 |  |
Crude Oil Derivative Contracts February - April (closed) [Member] |  |  |  |  |
Derivative [Line Items] |  |  |  |  |
Volume (Bbld) |  |  | 109,000 |  |
Derivative Weighted Average Price Crude Oil ($/Bbl) |  |  | 99.17 |  |
Crude Oil Derivative Contracts May - June (closed) [Member] |  |  |  |  |
Derivative [Line Items] |  |  |  |  |
Volume (Bbld) |  |  | 101,000 |  |
Derivative Weighted Average Price Crude Oil ($/Bbl) |  |  | 99.29 |  |
Crude Oil Derivative Contracts July - September [Member] |  |  |  |  |
Derivative [Line Items] |  |  |  |  |
Volume (Bbld) |  |  | 111,000 |  |
Derivative Weighted Average Price Crude Oil ($/Bbl) |  |  | 98.25 |  |
Crude Oil Derivative Contracts October - December [Member] |  |  |  |  |
Derivative [Line Items] |  |  |  |  |
Volume (Bbld) |  |  | 103,000 |  |
Derivative Weighted Average Price Crude Oil ($/Bbl) |  |  | 98.26 |  |
Volumes (Bbld) - Derivative Option Contracts |  |  | 8,000 |  |
Average Price ($/Bbl) - Derivative Option Contracts |  |  | 98.11 |  |
Crude Oil Derivative Contracts Year Two January - March [Member] |  |  |  |  |
Derivative [Line Items] |  |  |  |  |
Volume (Bbld) |  |  | 85,000 |  |
Derivative Weighted Average Price Crude Oil ($/Bbl) |  |  | 96.24 |  |
Crude Oil Derivative Contracts Year Two January - June [Member] |  |  |  |  |
Derivative [Line Items] |  |  |  |  |
Volumes (Bbld) - Derivative Option Contracts |  |  | 54,000 |  |
Average Price ($/Bbl) - Derivative Option Contracts |  |  | 98.91 |  |
Crude Oil Derivative Contracts Year Two April - June [Member] |  |  |  |  |
Derivative [Line Items] |  |  |  |  |
Volume (Bbld) |  |  | 75,000 |  |
Derivative Weighted Average Price Crude Oil ($/Bbl) |  |  | 96.20 |  |
Crude Oil Derivative Contracts Year Two July - December [Member] |  |  |  |  |
Derivative [Line Items] |  |  |  |  |
Volumes (Bbld) - Derivative Option Contracts |  |  | 75,000 |  |
Average Price ($/Bbl) - Derivative Option Contracts |  |  | 96.20 |  |
Crude Oil Derivative Contracts Year Two April - December [Member] |  |  |  |  |
Derivative [Line Items] |  |  |  |  |
Volumes (Bbld) - Derivative Option Contracts |  |  | 10,000 |  |
Average Price ($/Bbl) - Derivative Option Contracts |  |  | 96.60 |  |
Natural Gas Derivative Contracts January - April (closed) [Member] |  |  |  |  |
Derivative [Line Items] |  |  |  |  |
Volume (MMBtud) |  |  | 150,000 |  |
Derivative Weighted Average Price Natural Gas ($/MMBtu) |  |  | 4.79 |  |
Natural Gas Derivative Contracts May - July (closed) [Member] |  |  |  |  |
Derivative [Line Items] |  |  |  |  |
Volume (MMBtud) |  |  | 200,000 |  |
Derivative Weighted Average Price Natural Gas ($/MMBtu) |  |  | 4.72 |  |
Natural Gas Derivative Contracts August - October [Member] |  |  |  |  |
Derivative [Line Items] |  |  |  |  |
Volume (MMBtud) |  |  | 200,000 |  |
Derivative Weighted Average Price Natural Gas ($/MMBtu) |  |  | 4.72 |  |
Volumes (MMBtud) - Derivative Option Contracts |  |  | 200,000 |  |
Average Price ($/MMBtu) - Derivative Option Contracts |  |  | 4.72 |  |
Natural Gas Derivative Contracts November - December [Member] |  |  |  |  |
Derivative [Line Items] |  |  |  |  |
Volume (MMBtud) |  |  | 150,000 |  |
Derivative Weighted Average Price Natural Gas ($/MMBtu) |  |  | 4.79 |  |
Volumes (MMBtud) - Derivative Option Contracts |  |  | 150,000 |  |
Average Price ($/MMBtu) - Derivative Option Contracts |  |  | 4.79 |  |
Natural Gas Derivative Contracts Year Two January - December [Member] |  |  |  |  |
Derivative [Line Items] |  |  |  |  |
Volume (MMBtud) |  |  | 170,000 |  |
Derivative Weighted Average Price Natural Gas ($/MMBtu) |  |  | 4.54 |  |
Volumes (MMBtud) - Derivative Option Contracts |  |  | 320,000 |  |
Average Price ($/MMBtu) - Derivative Option Contracts |  |  | 4.66 |  |

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- Definition Aggregate notional amount of all interest rate derivatives designated as hedging instruments in cash flow hedges. Notional amount refers to the monetary amount specified in the interest rate derivative contract. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1A -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5579245-113959 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Notional Amount -URI http://asc.fasb.org/extlink&oid=6519104 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1B -URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5580258-113959 + Details
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- Definition Net of tax and reclassification adjustments amount of the change in accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges. Also includes an entity's share of an equity investee's increase (decrease) in deferred hedging gain (loss). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 10A -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=20435746&loc=SL7669646-108580 + Details
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