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Oil and Gas Exploration and Production Industries Disclosures, Costs Incurred (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items] |  |  |  |  |  |  |
Acquisition Costs of Properties - Unproved |  | $ 3,216,634 | [1] | $ 133,857 |  | $ 370,414 |
Acquisition Costs of Properties - Proved |  | 749,023 | [2] | 480,617 |  | 139,101 |
Subtotal |  | 3,965,657 |  | 614,474 |  | 509,515 |
Exploration Costs |  | 165,751 |  | 252,692 |  | 395,973 |
Development Costs |  | 2,313,876 | [3] | 4,061,117 | [4] | 6,999,281 | [5]
Total |  | 6,445,284 |  | 4,928,283 |  | 7,904,769 |
United States |  |  |  |  |  |  |
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items] |  |  |  |  |  |  |
Acquisition Costs of Properties - Unproved |  | 3,216,598 | [1] | 133,801 |  | 365,915 |
Acquisition Costs of Properties - Proved |  | 749,023 | [2] | 480,617 |  | 138,772 |
Subtotal |  | 3,965,621 |  | 614,418 |  | 504,687 |
Exploration Costs |  | 156,295 |  | 206,814 |  | 332,703 |
Development Costs |  | 2,252,713 | [3] | 3,847,813 | [4] | 6,638,192 | [5]
Total |  | 6,374,629 |  | 4,669,045 |  | 7,475,582 |
Trinidad |  |  |  |  |  |  |
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items] |  |  |  |  |  |  |
Acquisition Costs of Properties - Unproved |  | 0 | [1] | 0 |  | 0 |
Acquisition Costs of Properties - Proved |  | 0 | [2] | 0 |  | 0 |
Subtotal |  | 0 |  | 0 |  | 0 |
Exploration Costs |  | 2,695 |  | 22,837 |  | 2,794 |
Development Costs |  | 72,147 | [3] | 102,715 | [4] | 89,555 | [5]
Total |  | 74,842 |  | 125,552 |  | 92,349 |
Other International |  |  |  |  |  |  |
Costs Incurred, Oil and Gas Property Acquisition, Exploration, and Development Activities [Line Items] |  |  |  |  |  |  |
Acquisition Costs of Properties - Unproved | [6] | 36 | [1] | 56 |  | 4,499 |
Acquisition Costs of Properties - Proved | [6] | 0 | [2] | 0 |  | 329 |
Subtotal | [6] | 36 |  | 56 |  | 4,828 |
Exploration Costs | [6] | 6,761 |  | 23,041 |  | 60,476 |
Development Costs | [6] | (10,984) | [3] | 110,589 | [4] | 271,534 | [5]
Total | [6] | $ (4,187) |  | $ 133,686 |  | $ 336,838 |
[1] | Includes non-cash unproved leasehold acquisition costs of $3,102 million related to the Yates transaction.
[2] | Includes non-cash proved property acquisition costs of $732 million related to the Yates transaction.
[3] | Includes Asset Retirement Costs of $25 million, $(3) million and $(42) million for the United States, Trinidad and Other International, respectively. Excludes other property, plant and equipment.
[4] | Includes Asset Retirement Costs of $32 million, $15 million and $6 million for the United States, Trinidad and Other International, respectively. Excludes other property, plant and equipment.
[5] | Includes Asset Retirement Costs of $149 million, $14 million and $33 million for the United States, Trinidad and Other International, respectively. Excludes other property, plant and equipment.
[6] | Other International primarily consists of 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 Costs incurred, including capitalized costs and costs charged to expense, associated with the acquisition of oil and gas properties that have proved reserves. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 235 -Section 50 -Paragraph 18 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=68064819&loc=d3e62014-109447 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 235 -Section 50 -Paragraph 19 -URI http://asc.fasb.org/extlink&oid=68064819&loc=d3e62038-109447 + Details
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