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Supplemental Information on Oil And Gas Producing Activities (Unaudited) - Summary of Changes in YPF's Net Proved Reserves (Detail) | 12 Months Ended
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Dec. 31, 2018 MMBbls MMBoe Bcf | Dec. 31, 2017 MMBbls MMBoe Bcf | Dec. 31, 2016 MMBbls MMBoe Bcf
Disclosure of information about consolidated structured entities [Line Items] |  |  |
Improved recovery | MMBoe | 15 | 32 | 35
Worldwide [member] | Equity-accounted entities [Member] |  |  |
Disclosure of information about consolidated structured entities [Line Items] |  |  |
Improved recovery | 0 | 0 | 0
Purchase of minerals in place | 0 | 0 | 0
Sale of minerals in place | 0 | 0 | 0
Worldwide [member] | Consolidated entities [Member] |  |  |
Disclosure of information about consolidated structured entities [Line Items] |  |  |
Beginning balance | 422 | 525 | 608
Revisions of previous estimates | 126 | (71) | (75)
Extensions and discoveries | 103 | 19 | 45
Improved recovery | 15 | 32 | 35
Purchase of minerals in place |  |  | 2
Sale of minerals in place | (1) |  |
Production for the year | (83) | (83) | (90)
Ending balance | 582 | 422 | 525
Beginning balance | 58 | 68 | 71
Revisions of previous estimates | (1) | 4 | 5
Extensions and discoveries | 13 | 5 | 11
Improved recovery | 0 | 0 | 0
Purchase of minerals in place | 0 | 0 | 0
Sale of minerals in place | 0 | 0 | 0
Production for the year | (14) | (19) | (19)
Ending balance | 56 | 58 | 68
Beginning balance | Bcf | 2,520 | 2,923 | 3,072
Revisions of previous estimates | Bcf | 178 | (161) | (110)
Extensions and discoveries | Bcf | 329 | 313 | 371
Improved recovery | Bcf |  |  | 1
Purchase of minerals in place | Bcf |  | 12 | 165
Sale of minerals in place | Bcf | (4) |  |
Production for the year | Bcf | (542) | (567) | (576)
Ending balance | Bcf | 2,481 | 2,520 | 2,923
Beginning balance | 929 | 1,113 | 1,226
Revisions of previous estimates | 157 | (96) | (89)
Extensions and discoveries | 174 | 80 | 122
Improved recovery | 15 | 32 | 35
Purchase of minerals in place |  | 2 | 31
Sale of minerals in place | (2) |  | (1)
Production for the year | (193) | (202) | (211)
Ending balance | 1,080 | 929 | 1,113
Worldwide [member] | Consolidated entities [Member] | Proved reserves, developed [member] |  |  |
Disclosure of information about consolidated structured entities [Line Items] |  |  |
Beginning balance | 286 | 380 | 440
Ending balance | 339 | 286 | 380
Beginning balance | 47 | 53 | 56
Ending balance | 41 | 47 | 53
Beginning balance | Bcf | 1,850 | 2,143 | 2,210
Ending balance | Bcf | 1,915 | 1,850 | 2,143
Beginning balance | 663 | 815 | 889
Ending balance | 722 | 663 | 815
Worldwide [member] | Consolidated entities [Member] | Proved reserves, undeveloped [member] |  |  |
Disclosure of information about consolidated structured entities [Line Items] |  |  |
Beginning balance | 136 | 145 | 168
Ending balance | 243 | 136 | 145
Beginning balance | 11 | 15 | 15
Ending balance | 15 | 11 | 15
Beginning balance | Bcf | 670 | 780 | 862
Ending balance | Bcf | 566 | 670 | 780
Beginning balance | 266 | 298 | 337
Ending balance | 358 | 266 | 298
Worldwide [member] | Consolidated and equity-accounted entities [Member] |  |  |
Disclosure of information about consolidated structured entities [Line Items] |  |  |
Beginning balance | 422 | 525 | 608
Ending balance | 582 | 422 | 525
Beginning balance | 58 | 68 | 71
Ending balance | 56 | 58 | 68
Beginning balance | Bcf | 2,520 | 2,923 | 3,072
Ending balance | Bcf | 2,481 | 2,520 | 2,923
Beginning balance | 929 | 1,113 | 1,226
Ending balance | 1,080 | 929 | 1,113
Worldwide [member] | Consolidated and equity-accounted entities [Member] | Proved reserves, developed [member] |  |  |
Disclosure of information about consolidated structured entities [Line Items] |  |  |
Beginning balance | 286 | 380 | 440
Ending balance | 339 | 286 | 380
Beginning balance | 47 | 53 | 56
Ending balance | 41 | 47 | 53
Beginning balance | Bcf | 1,850 | 2,143 | 2,210
Ending balance | Bcf | 1,915 | 1,850 | 2,143
Beginning balance | 663 | 815 | 889
Ending balance | 722 | 663 | 815
Worldwide [member] | Consolidated and equity-accounted entities [Member] | Proved reserves, undeveloped [member] |  |  |
Disclosure of information about consolidated structured entities [Line Items] |  |  |
Beginning balance | 136 | 145 | 168
Ending balance | 243 | 136 | 145
Beginning balance | 11 | 15 | 15
Ending balance | 15 | 11 | 15
Beginning balance | Bcf | 670 | 780 | 862
Ending balance | Bcf | 566 | 670 | 780
Beginning balance | 266 | 298 | 337
Ending balance | 358 | 266 | 298
Argentina [member] | Equity-accounted entities [Member] |  |  |
Disclosure of information about consolidated structured entities [Line Items] |  |  |
Improved recovery | 0 | 0 | 0
Purchase of minerals in place | 0 | 0 | 0
Sale of minerals in place | 0 | 0 | 0
Argentina [member] | Consolidated entities [Member] |  |  |
Disclosure of information about consolidated structured entities [Line Items] |  |  |
Beginning balance | 422 | 525 | 607
Revisions of previous estimates | 126 | (72) | (74)
Extensions and discoveries | 103 | 19 | 45
Improved recovery | 15 | 33 | 35
Purchase of minerals in place |  |  | 2
Sale of minerals in place | (1) |  |
Production for the year | (83) | (83) | (90)
Ending balance | 582 | 422 | 525
Beginning balance | 58 | 68 | 71
Revisions of previous estimates | (1) | 4 | 5
Extensions and discoveries | 13 | 5 | 11
Improved recovery | 0 | 0 | 0
Purchase of minerals in place | 0 | 0 | 0
Sale of minerals in place | 0 | 0 | 0
Production for the year | (14) | (19) | (19)
Ending balance | 56 | 58 | 68
Beginning balance | Bcf | 2,520 | 2,923 | 3,067
Revisions of previous estimates | Bcf | 178 | (161) | (105)
Extensions and discoveries | Bcf | 329 | 313 | 371
Improved recovery | Bcf |  |  | 1
Purchase of minerals in place | Bcf |  | 12 | 165
Sale of minerals in place | Bcf | (4) |  |
Production for the year | Bcf | (542) | (567) | (576)
Ending balance | Bcf | 2,481 | 2,520 | 2,923
Beginning balance | 929 | 1,113 | 1,224
Revisions of previous estimates | 157 | (96) | (87)
Extensions and discoveries | 174 | 80 | 122
Improved recovery | 15 | 32 | 35
Purchase of minerals in place |  | 2 | 31
Sale of minerals in place | (2) |  | (1)
Production for the year | (193) | (202) | (211)
Ending balance | 1,080 | 929 | 1,113
Argentina [member] | Consolidated entities [Member] | Proved reserves, developed [member] |  |  |
Disclosure of information about consolidated structured entities [Line Items] |  |  |
Beginning balance | 286 | 380 | 439
Ending balance | 339 | 286 | 380
Beginning balance | 47 | 53 | 56
Ending balance | 41 | 47 | 53
Beginning balance | Bcf | 1,850 | 2,143 | 2,205
Ending balance | Bcf | 1,915 | 1,850 | 2,143
Beginning balance | 663 | 815 | 887
Ending balance | 722 | 663 | 815
Argentina [member] | Consolidated entities [Member] | Proved reserves, undeveloped [member] |  |  |
Disclosure of information about consolidated structured entities [Line Items] |  |  |
Beginning balance | 136 | 145 | 168
Ending balance | 243 | 136 | 145
Beginning balance | 11 | 15 | 15
Ending balance | 15 | 11 | 15
Beginning balance | Bcf | 670 | 780 | 862
Ending balance | Bcf | 566 | 670 | 780
Beginning balance | 266 | 298 | 337
Ending balance | 358 | 266 | 298
Argentina [member] | Consolidated and equity-accounted entities [Member] |  |  |
Disclosure of information about consolidated structured entities [Line Items] |  |  |
Beginning balance | 422 | 525 | 607
Ending balance | 582 | 422 | 525
Beginning balance | 58 | 68 | 71
Ending balance | 56 | 58 | 68
Beginning balance | Bcf | 2,520 | 2,923 | 3,067
Ending balance | Bcf | 2,481 | 2,520 | 2,923
Beginning balance | 929 | 1,113 | 1,224
Ending balance | 1,080 | 929 | 1,113
Argentina [member] | Consolidated and equity-accounted entities [Member] | Proved reserves, developed [member] |  |  |
Disclosure of information about consolidated structured entities [Line Items] |  |  |
Beginning balance | 286 | 380 | 439
Ending balance | 339 | 286 | 380
Beginning balance | 47 | 53 | 56
Ending balance | 41 | 47 | 53
Beginning balance | Bcf | 1,850 | 2,143 | 2,205
Ending balance | Bcf | 1,915 | 1,850 | 2,143
Beginning balance | 663 | 815 | 887
Ending balance | 722 | 663 | 815
Argentina [member] | Consolidated and equity-accounted entities [Member] | Proved reserves, undeveloped [member] |  |  |
Disclosure of information about consolidated structured entities [Line Items] |  |  |
Beginning balance | 136 | 145 | 168
Ending balance | 243 | 136 | 145
Beginning balance | 11 | 15 | 15
Ending balance | 15 | 11 | 15
Beginning balance | Bcf | 670 | 780 | 862
Ending balance | Bcf | 566 | 670 | 780
Beginning balance | 266 | 298 | 337
Ending balance | 358 | 266 | 298
Other foreign [Member] | Equity-accounted entities [Member] |  |  |
Disclosure of information about consolidated structured entities [Line Items] |  |  |
Improved recovery | 0 | 0 | 0
Purchase of minerals in place | 0 | 0 | 0
Sale of minerals in place | 0 | 0 | 0
Other foreign [Member] | Consolidated entities [Member] |  |  |
Disclosure of information about consolidated structured entities [Line Items] |  |  |
Beginning balance |  |  | 1
Revisions of previous estimates |  |  | (1)
Improved recovery | 0 | 0 | 0
Purchase of minerals in place | 0 | 0 | 0
Sale of minerals in place | 0 | 0 | 0
Beginning balance | Bcf |  |  | 5
Revisions of previous estimates | Bcf |  |  | (5)
Beginning balance |  |  | 2
Revisions of previous estimates |  |  | (2)
Other foreign [Member] | Consolidated entities [Member] | Proved reserves, developed [member] |  |  |
Disclosure of information about consolidated structured entities [Line Items] |  |  |
Beginning balance |  |  | 1
Beginning balance | Bcf |  |  | 5
Beginning balance |  |  | 2
Other foreign [Member] | Consolidated and equity-accounted entities [Member] |  |  |
Disclosure of information about consolidated structured entities [Line Items] |  |  |
Beginning balance |  |  | 1
Beginning balance | Bcf |  |  | 5
Beginning balance |  |  | 2
Other foreign [Member] | Consolidated and equity-accounted entities [Member] | Proved reserves, developed [member] |  |  |
Disclosure of information about consolidated structured entities [Line Items] |  |  |
Beginning balance |  |  | 1
Beginning balance | Bcf |  |  | 5
Beginning balance |  |  | 2

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