v3.6.0.2

Oil and Gas Exploration and Production Industries Disclosures, Discounted Future Net Cash Flows (Details) - USD ($) $ in Thousands | 12 Months Ended |  |  |
--- | --- | --- | --- | ---
Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
Discounted Future Net Cash Flows Relating to Proved Oil and Gas Reserves [Line Items] |  |  |  |  |  |  |  |  |  |
Future cash inflows |  |  |  |  | $ 58,840,424 | [1] | $ 68,720,648 | [2] | $ 146,950,221 | [3]
Future production costs |  |  |  |  | (28,018,883) |  | (32,060,855) |  | (51,633,293) |
Future development costs |  |  |  |  | (12,741,932) |  | (15,785,811) |  | (20,494,765) |
Future income taxes |  |  |  |  | (3,211,320) |  | (4,616,201) |  | (23,185,714) |
Future net cash flows |  |  |  |  | 14,868,289 |  | 16,257,781 |  | 51,636,449 |
Discount to present value at 10% annual rate |  |  |  |  | (6,056,132) |  | (6,636,385) |  | (23,713,031) |
Standardized measure of discounted future net cash flows relating to proved oil and gas reserves |  | $ 9,621,396 | $ 27,923,418 | $ 21,333,432 | 8,812,157 |  | 9,621,396 |  | 27,923,418 |
Annual Rate of Discount to Present Value |  | 10.00% | 10.00% | 10.00% |  |  |  |  |  |
Increase (Decrease) in Standardized Measure of Discounted Future Net Cash Flow Relating to Proved Oil and Gas Reserves [Roll Forward] |  |  |  |  |  |  |  |  |  |
Balance at Beginning of Period |  | $ 9,621,396 | $ 27,923,418 | $ 21,333,432 |  |  |  |  |  |
Sales and transfers of oil and gas produced, net of production costs |  | (3,478,625) | (4,020,717) | (9,470,714) |  |  |  |  |  |
Net changes in prices and production costs |  | (3,679,602) | (30,669,350) | 1,263,177 |  |  |  |  |  |
Extensions, discoveries, additions and improved recovery, net of related costs |  | 907,267 | 1,095,898 | 8,083,852 |  |  |  |  |  |
Development costs incurred |  | 1,230,000 | 2,137,700 | 2,835,100 |  |  |  |  |  |
Revisions of estimated development cost |  | 2,121,708 | 4,079,381 | 1,802,735 |  |  |  |  |  |
Revisions of previous quantity estimates |  | 1,053,020 | (4,051,874) | 1,812,532 |  |  |  |  |  |
Accretion of discount |  | 1,054,435 | 3,857,479 | 2,833,350 |  |  |  |  |  |
Net change in income taxes |  | 868,038 | 9,728,423 | (3,651,300) |  |  |  |  |  |
Purchases of reserves in place |  | 377,872 | 123,542 | 317,785 |  |  |  |  |  |
Sales of reserves in place |  | (375,793) | (37,088) | (478,879) |  |  |  |  |  |
Changes in timing and other |  | (887,559) | (545,416) | 1,242,348 |  |  |  |  |  |
Balance at End of Period |  | 8,812,157 | 9,621,396 | 27,923,418 |  |  |  |  |  |
United States |  |  |  |  |  |  |  |  |  |
Discounted Future Net Cash Flows Relating to Proved Oil and Gas Reserves [Line Items] |  |  |  |  |  |  |  |  |  |
Future cash inflows |  |  |  |  | 57,913,314 | [1] | 67,242,928 | [2] | 144,355,692 | [3]
Future production costs |  |  |  |  | (27,625,833) |  | (31,707,743) |  | (51,112,604) |
Future development costs |  |  |  |  | (12,602,699) |  | (15,579,923) |  | (20,270,439) |
Future income taxes |  |  |  |  | (3,151,319) |  | (4,400,542) |  | (22,725,618) |
Future net cash flows |  |  |  |  | 14,533,463 |  | 15,554,720 |  | 50,247,031 |
Discount to present value at 10% annual rate |  |  |  |  | (6,039,736) |  | (6,589,253) |  | (23,542,990) |
Standardized measure of discounted future net cash flows relating to proved oil and gas reserves |  | 8,965,467 | 26,704,041 | 19,576,901 | 8,493,727 |  | 8,965,467 |  | 26,704,041 |
Increase (Decrease) in Standardized Measure of Discounted Future Net Cash Flow Relating to Proved Oil and Gas Reserves [Roll Forward] |  |  |  |  |  |  |  |  |  |
Balance at Beginning of Period |  | 8,965,467 | 26,704,041 | 19,576,901 |  |  |  |  |  |
Sales and transfers of oil and gas produced, net of production costs |  | (3,260,372) | (3,685,600) | (8,874,180) |  |  |  |  |  |
Net changes in prices and production costs |  | (3,352,802) | (29,993,699) | 1,481,668 |  |  |  |  |  |
Extensions, discoveries, additions and improved recovery, net of related costs |  | 865,066 | 1,028,410 | 8,074,550 |  |  |  |  |  |
Development costs incurred |  | 1,207,000 | 2,135,800 | 2,818,800 |  |  |  |  |  |
Revisions of estimated development cost |  | 2,092,769 | 4,087,093 | 1,696,916 |  |  |  |  |  |
Revisions of previous quantity estimates |  | 1,013,753 | (4,084,572) | 1,741,918 |  |  |  |  |  |
Accretion of discount |  | 970,388 | 3,699,330 | 2,612,286 |  |  |  |  |  |
Net change in income taxes |  | 738,416 | 9,550,847 | (3,743,300) |  |  |  |  |  |
Purchases of reserves in place |  | 377,872 | 123,542 | 317,785 |  |  |  |  |  |
Sales of reserves in place |  | (375,793) | (23,424) | (189,808) |  |  |  |  |  |
Changes in timing and other |  | (748,037) | (576,301) | 1,190,505 |  |  |  |  |  |
Balance at End of Period |  | 8,493,727 | 8,965,467 | 26,704,041 |  |  |  |  |  |
Trinidad |  |  |  |  |  |  |  |  |  |
Discounted Future Net Cash Flows Relating to Proved Oil and Gas Reserves [Line Items] |  |  |  |  |  |  |  |  |  |
Future cash inflows |  |  |  |  | 524,523 | [1] | 954,779 | [2] | 1,615,280 | [3]
Future production costs |  |  |  |  | (165,757) |  | (183,607) |  | (277,844) |
Future development costs |  |  |  |  | (103,631) |  | (140,541) |  | (84,576) |
Future income taxes |  |  |  |  | (60,001) |  | (215,659) |  | (460,096) |
Future net cash flows |  |  |  |  | 195,134 |  | 414,972 |  | 792,764 |
Discount to present value at 10% annual rate |  |  |  |  | (9,384) |  | (33,848) |  | (110,228) |
Standardized measure of discounted future net cash flows relating to proved oil and gas reserves |  | 381,124 | 682,536 | 876,640 | 185,750 |  | 381,124 |  | 682,536 |
Increase (Decrease) in Standardized Measure of Discounted Future Net Cash Flow Relating to Proved Oil and Gas Reserves [Roll Forward] |  |  |  |  |  |  |  |  |  |
Balance at Beginning of Period |  | 381,124 | 682,536 | 876,640 |  |  |  |  |  |
Sales and transfers of oil and gas produced, net of production costs |  | (215,414) | (351,606) | (473,757) |  |  |  |  |  |
Net changes in prices and production costs |  | (182,876) | (370,503) | (12,079) |  |  |  |  |  |
Extensions, discoveries, additions and improved recovery, net of related costs |  | 42,201 | 47,613 | 3,113 |  |  |  |  |  |
Development costs incurred |  | 3,900 | 500 | 12,800 |  |  |  |  |  |
Revisions of estimated development cost |  | 22,596 | (34,647) | 9,981 |  |  |  |  |  |
Revisions of previous quantity estimates |  | 36,648 | 33,285 | 35,001 |  |  |  |  |  |
Accretion of discount |  | 56,566 | 104,464 | 133,019 |  |  |  |  |  |
Net change in income taxes |  | 129,622 | 177,576 | 91,438 |  |  |  |  |  |
Purchases of reserves in place |  | 0 | 0 | 0 |  |  |  |  |  |
Sales of reserves in place |  | 0 | 0 | 0 |  |  |  |  |  |
Changes in timing and other |  | (88,617) | 91,906 | 6,380 |  |  |  |  |  |
Balance at End of Period |  | 185,750 | 381,124 | 682,536 |  |  |  |  |  |
Other International (1) |  |  |  |  |  |  |  |  |  |
Discounted Future Net Cash Flows Relating to Proved Oil and Gas Reserves [Line Items] |  |  |  |  |  |  |  |  |  |
Future cash inflows | [4] |  |  |  | 402,587 | [1] | 522,941 | [2] | 979,249 | [3]
Future production costs | [4] |  |  |  | (227,293) |  | (169,505) |  | (242,845) |
Future development costs | [4] |  |  |  | (35,602) |  | (65,347) |  | (139,750) |
Future income taxes | [4] |  |  |  | 0 |  | 0 |  | 0 |
Future net cash flows | [4] |  |  |  | 139,692 |  | 288,089 |  | 596,654 |
Discount to present value at 10% annual rate | [4] |  |  |  | (7,012) |  | (13,284) |  | (59,813) |
Standardized measure of discounted future net cash flows relating to proved oil and gas reserves | [4] | 274,805 | 536,841 | 879,891 | $ 132,680 |  | $ 274,805 |  | $ 536,841 |
Increase (Decrease) in Standardized Measure of Discounted Future Net Cash Flow Relating to Proved Oil and Gas Reserves [Roll Forward] |  |  |  |  |  |  |  |  |  |
Balance at Beginning of Period | [4] | 274,805 | 536,841 | 879,891 |  |  |  |  |  |
Sales and transfers of oil and gas produced, net of production costs | [4] | (2,839) | 16,489 | (122,777) |  |  |  |  |  |
Net changes in prices and production costs | [4] | (143,924) | (305,148) | (206,412) |  |  |  |  |  |
Extensions, discoveries, additions and improved recovery, net of related costs | [4] | 0 | 19,875 | 6,189 |  |  |  |  |  |
Development costs incurred | [4] | 19,100 | 1,400 | 3,500 |  |  |  |  |  |
Revisions of estimated development cost | [4] | 6,343 | 26,935 | 95,838 |  |  |  |  |  |
Revisions of previous quantity estimates | [4] | 2,619 | (587) | 35,613 |  |  |  |  |  |
Accretion of discount | [4] | 27,481 | 53,685 | 88,045 |  |  |  |  |  |
Net change in income taxes | [4] | 0 | 0 | 562 |  |  |  |  |  |
Purchases of reserves in place | [4] | 0 | 0 | 0 |  |  |  |  |  |
Sales of reserves in place | [4] | 0 | (13,664) | (289,071) |  |  |  |  |  |
Changes in timing and other | [4] | (50,905) | (61,021) | 45,463 |  |  |  |  |  |
Balance at End of Period | [4] | $ 132,680 | $ 274,805 | $ 536,841 |  |  |  |  |  |
[1] | Estimated crude oil prices used to calculate 2016 future cash inflows for the United States, Trinidad and Other International were $40.70, $34.79 and $39.55, respectively. Estimated NGL price used to calculate 2016 future cash inflows for the United States was $14.69. Estimated natural gas prices used to calculate 2016 future cash inflows for the United States, Trinidad and Other International were $1.40, $1.76 and $4.84, respectively.
[2] | Estimated crude oil prices used to calculate 2015 future cash inflows for the United States, Trinidad and Other International were $49.58, $38.83 and $47.76, respectively. Estimated NGL price used to calculate 2015 future cash inflows for the United States was $15.17. Estimated natural gas prices used to calculate 2015 future cash inflows for the United States, Trinidad and Other International were $2.15, $2.88 and $5.60, respectively.
[3] | Estimated crude oil prices used to calculate 2014 future cash inflows for the United States, Trinidad and Other International were $97.51, $80.60 and $94.09, respectively. Estimated NGL prices used to calculate 2014 future cash inflows for the United States and Other International were $34.29 and $27.03, respectively. Estimated natural gas prices used to calculate 2014 future cash inflows for the United States, Trinidad and Other International were $3.71, $3.71 and $5.14, respectively.
[4] | Other International includes EOG's United Kingdom, China, Canada and Argentina operations. The Argentina operations were sold in the third quarter of 2016.

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- Definition Amount, after future accumulated cash outflow for development and production costs and future income tax, of estimated future accumulated cash inflow from the sale of proved oil and gas reserves. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 235 -Section 50 -Paragraph 33 -URI http://asc.fasb.org/extlink&oid=68064819&loc=d3e62479-109447 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 235 -Section 50 -Paragraph 30 -URI http://asc.fasb.org/extlink&oid=68064819&loc=d3e62424-109447 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 235 -Section 50 -Paragraph 31 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=68064819&loc=d3e62455-109447 + Details
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- Definition Amount of discount on future accumulated cash inflow, after deducting future accumulated cash outflow for development and production costs and future income tax, from sale of proved oil and gas reserves, using a discount rate of ten percent a year. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 235 -Section 50 -Paragraph 31 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=68064819&loc=d3e62455-109447 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 235 -Section 50 -Paragraph 33 -URI http://asc.fasb.org/extlink&oid=68064819&loc=d3e62479-109447 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 235 -Section 50 -Paragraph 30 -URI http://asc.fasb.org/extlink&oid=68064819&loc=d3e62424-109447 + Details
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- Definition Amount of (increase) decrease in standardized measure of discounted future net cash flow as a result of sales and transfers of oil and gas produced. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 235 -Section 50 -Paragraph 35 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=68064819&loc=d3e62500-109447 + Details
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- Definition Amount of increase (decrease) in standardized measure of discounted future net cash flow as a result of changes from other sources. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 235 -Section 50 -Paragraph 35 -URI http://asc.fasb.org/extlink&oid=68064819&loc=d3e62500-109447 + Details
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- Definition Amount of accretion of discount for the standardized measure of discounted future net cash flow related to proved oil and gas reserves. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 235 -Section 50 -Paragraph 35 -Subparagraph (h) -URI http://asc.fasb.org/extlink&oid=68064819&loc=d3e62500-109447 + Details
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- Definition Amount of discounted future accumulated cash inflow relating to proved oil and gas reserves. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 235 -Section 50 -Paragraph 30 -URI http://asc.fasb.org/extlink&oid=68064819&loc=d3e62424-109447 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 235 -Section 55 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=34713648&loc=d3e63123-109448 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 235 -Section 50 -Paragraph 33 -URI http://asc.fasb.org/extlink&oid=68064819&loc=d3e62479-109447 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 235 -Section 50 -Paragraph 35 -URI http://asc.fasb.org/extlink&oid=68064819&loc=d3e62500-109447 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 235 -Section 50 -Paragraph 31 -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=68064819&loc=d3e62455-109447 + Details
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