v2.4.0.6

Segment Information (Details) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
--- | ---
Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010
Schedule of Segment Reporting Information By Segment [Abstract] |  |  |
Crude Oil and Condensate | $ 5,659,437 | $ 3,838,284 | $ 1,998,771
Natural Gas Liquids | 727,177 | 779,364 | 462,345
Natural Gas | 1,571,762 | 2,240,540 | 2,420,099
Gains on Mark-to-Market Commodity Derivative Contracts | 393,744 | 626,053 | 61,912
Gathering, Processing and Marketing | 3,096,694 | 2,115,792 | 909,680
Gains on Asset Dispositions, Net | 192,660 | 492,909 | 223,538
Other, Net | 41,162 | 33,173 | 23,551
Net Operating Revenues (2) | 11,682,636 | 10,126,115 | 6,099,896
Depreciation, Depletion and Amortization | 3,169,703 | 2,516,381 | 1,941,926
Operating Income (Loss) | 1,479,797 | 2,113,309 | 523,319
Interest Income | 8,771 | 1,019 | 823
Other Income (Expense) | 5,724 | 5,834 | 13,420
Net Interest Expense | 213,552 | 210,363 | 129,586
Income (Loss) Before Income Taxes | 1,280,740 | 1,909,799 | 407,976
Income Tax Provision (Benefit) | 710,461 | 818,676 | 247,322
Additions to Oil and Gas Properties, Excluding Dry Hole Costs | 6,720,346 | 6,241,167 | 5,138,126
Total Property, Plant and Equipment, Net | 23,337,681 | 21,288,824 | 18,680,900
Total Assets | 27,336,578 | 24,838,797 | 21,624,233
Percentage of revenues used to determine significant purchasers | 10.00% |  |
United States [Member] |  |  |
Schedule of Segment Reporting Information By Segment [Abstract] |  |  |
Crude Oil and Condensate | 5,383,612 | 3,458,248 | 1,700,770
Natural Gas Liquids | 713,497 | 762,730 | 448,647
Natural Gas | 951,463 | 1,593,964 | 1,778,823
Gains on Mark-to-Market Commodity Derivative Contracts | 393,744 | 626,053 | 61,912
Gathering, Processing and Marketing | 3,091,281 | 2,115,768 | 909,660
Gains on Asset Dispositions, Net | 166,201 | 475,878 | 196,774
Other, Net | 40,780 | 32,329 | 19,886
Net Operating Revenues (2) | 10,740,578 | 9,064,970 | 5,116,472
Depreciation, Depletion and Amortization | 2,780,563 | 2,131,706 | 1,539,240
Operating Income (Loss) | 2,233,911 | 2,252,508 | 787,422
Interest Income | 8,343 | 436 | 152
Other Income (Expense) | (12,455) | (6,480) | (3,905)
Net Interest Expense | 242,138 | 214,360 | 112,226
Income (Loss) Before Income Taxes | 1,987,661 | 2,032,104 | 671,443
Income Tax Provision (Benefit) | 707,401 | 732,362 | 255,945
Additions to Oil and Gas Properties, Excluding Dry Hole Costs | 6,198,267 | 5,790,590 | 4,491,897
Total Property, Plant and Equipment, Net | 21,560,998 | 18,711,774 | 15,747,808
Total Assets | 24,523,072 | 21,313,158 | 17,762,533
Canada [Member] |  |  |
Schedule of Segment Reporting Information By Segment [Abstract] |  |  |
Crude Oil and Condensate | 221,556 | 264,895 | 178,349
Natural Gas Liquids | 13,680 | 16,634 | 13,698
Natural Gas | 86,361 | 178,324 | 285,369
Gains on Mark-to-Market Commodity Derivative Contracts | 0 | 0 | 0
Gathering, Processing and Marketing | 0 | 0 | 0
Gains on Asset Dispositions, Net | 26,459 | 17,033 | 23,112
Other, Net | 367 | 258 | (31)
Net Operating Revenues (2) | 348,423 | 477,144 | 500,497
Depreciation, Depletion and Amortization | 223,689 | 260,084 | 315,849
Operating Income (Loss) | (1,065,434) | (459,520) | (516,874)
Interest Income | 123 | 342 | 387
Other Income (Expense) | (8,689) | (2,375) | 2,067
Net Interest Expense | 6,589 | 23,085 | 34,350
Income (Loss) Before Income Taxes | (1,080,589) | (484,638) | (548,770)
Income Tax Provision (Benefit) | (134,745) | (125,474) | (146,495)
Additions to Oil and Gas Properties, Excluding Dry Hole Costs | 302,851 | 259,634 | 446,626
Total Property, Plant and Equipment, Net | 877,996 | 1,760,066 | 2,189,961
Total Assets | 1,202,031 | 2,131,949 | 2,598,412
Trinidad [Member] |  |  |
Schedule of Segment Reporting Information By Segment [Abstract] |  |  |
Crude Oil and Condensate | 50,708 | 112,554 | 117,605
Natural Gas Liquids | 0 | 0 | 0
Natural Gas | 514,322 | 442,589 | 330,247
Gains on Mark-to-Market Commodity Derivative Contracts | 0 | 0 | 0
Gathering, Processing and Marketing | 5,413 | 24 | 20
Gains on Asset Dispositions, Net | 0 | (2) | 3,652
Other, Net | 15 | 586 | 3,696
Net Operating Revenues (2) | 570,458 | 555,751 | 455,220
Depreciation, Depletion and Amortization | 147,062 | 107,141 | 71,085
Operating Income (Loss) | 371,876 | 383,992 | 312,128
Interest Income | 125 | 101 | 120
Other Income (Expense) | 20,482 | 18,755 | 14,022
Net Interest Expense | 238 | 0 | 448
Income (Loss) Before Income Taxes | 392,245 | 402,848 | 325,822
Income Tax Provision (Benefit) | 140,468 | 204,698 | 140,934
Additions to Oil and Gas Properties, Excluding Dry Hole Costs | 49,376 | 132,159 | 134,198
Total Property, Plant and Equipment, Net | 535,405 | 627,794 | 595,970
Total Assets | 1,012,727 | 1,085,664 | 954,391
Other International [Member] |  |  |
Schedule of Segment Reporting Information By Segment [Abstract] |  |  |
Crude Oil and Condensate | 3,561 | 2,587 | 2,047
Natural Gas Liquids | 0 | 0 | 0
Natural Gas | 19,616 | 25,663 | 25,660
Gains on Mark-to-Market Commodity Derivative Contracts | 0 | 0 | 0
Gathering, Processing and Marketing | 0 | 0 | 0
Gains on Asset Dispositions, Net | 0 | 0 | 0
Other, Net | 0 | 0 | 0
Net Operating Revenues (2) | 23,177 | 28,250 | 27,707
Depreciation, Depletion and Amortization | 18,389 | 17,450 | 15,752
Operating Income (Loss) | (60,556) | (63,671) | (59,357)
Interest Income | 180 | 140 | 164
Other Income (Expense) | 6,386 | (4,066) | 1,236
Net Interest Expense | (35,413) | (27,082) | (17,438)
Income (Loss) Before Income Taxes | (18,577) | (40,515) | (40,519)
Income Tax Provision (Benefit) | (2,663) | 7,090 | (3,062)
Additions to Oil and Gas Properties, Excluding Dry Hole Costs | 169,852 | 58,784 | 65,405
Total Property, Plant and Equipment, Net | 363,282 | 189,190 | 147,161
Total Assets | $ 598,748 | $ 308,026 | $ 308,897

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