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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, 2017 MMBbls MMBoe Bcf | Dec. 31, 2016 MMBbls MMBoe Bcf | Dec. 31, 2015 MMBbls MMBoe Bcf
Disclosure of information about consolidated structured entities [Line Items] |  |  |
Improved recovery | MMBoe | 32 | 35 | 23
Worldwide [Member] | Equity-accounted entities [Member] |  |  |
Disclosure of information about consolidated structured entities [Line Items] |  |  |
Sale of minerals in place | 0 | 0 | 0
Improved recovery | 0 | 0 | 0
Purchase of minerals in place | 0 | 0 | 0
Worldwide [Member] | Consolidated entities [Member] |  |  |
Disclosure of information about consolidated structured entities [Line Items] |  |  |
Beginning balance | 525 | 608 | 601
Revisions of previous estimates | (71) | (75) | 31
Extensions and discoveries | 19 | 45 | 44
Improved recovery | 32 | 35 | 23
Purchase of minerals in place |  | 2 |
Sale of minerals in place | 0 | 0 | 0
Production for the year | (83) | (90) | (91)
Ending balance | 422 | 525 | 608
Beginning balance | 68 | 71 | 73
Revisions of previous estimates | 4 | 5 | 9
Extensions and discoveries | 5 | 11 | 10
Improved recovery | 0 | 0 | 0
Purchase of minerals in place | 0 | 0 | 0
Sale of minerals in place |  |  | (3)
Production for the year | (19) | (19) | (18)
Ending balance | 58 | 68 | 71
Beginning balance | Bcf | 2,923 | 3,072 | 3,016
Revisions of previous estimates | Bcf | (161) | (110) | 174
Extensions and discoveries | Bcf | 313 | 371 | 520
Improved recovery | Bcf |  | 1 | 1
Purchase of minerals in place | Bcf | 12 | 165 |
Sale of minerals in place | Bcf |  |  | (70)
Production for the year | Bcf | (567) | (576) | (569)
Ending balance | Bcf | 2,520 | 2,923 | 3,072
Beginning balance | 1,113 | 1,226 | 1,212
Revisions of previous estimates | (96) | (89) | 71
Extensions and discoveries | 80 | 122 | 147
Improved recovery | 32 | 35 | 23
Purchase of minerals in place | 2 | 31 |
Sale of minerals in place |  | (1) | (16)
Production for the year | (202) | (211) | (211)
Ending balance | 929 | 1,113 | 1,226
Worldwide [Member] | Consolidated entities [Member] | Proved reserves, developed [Member] |  |  |
Disclosure of information about consolidated structured entities [Line Items] |  |  |
Beginning balance | 380 | 440 | 447
Ending balance | 286 | 380 | 440
Beginning balance | 53 | 56 | 53
Ending balance | 47 | 53 | 56
Beginning balance | Bcf | 2,143 | 2,210 | 2,267
Ending balance | Bcf | 1,850 | 2,143 | 2,210
Beginning balance | 815 | 889 | 905
Ending balance | 663 | 815 | 889
Worldwide [Member] | Consolidated entities [Member] | Proved reserves, undeveloped [Member] |  |  |
Disclosure of information about consolidated structured entities [Line Items] |  |  |
Beginning balance | 145 | 168 | 154
Ending balance | 136 | 145 | 168
Beginning balance | 15 | 15 | 20
Ending balance | 11 | 15 | 15
Beginning balance | Bcf | 780 | 862 | 749
Ending balance | Bcf | 670 | 780 | 862
Beginning balance | 298 | 337 | 307
Ending balance | 266 | 298 | 337
Worldwide [Member] | Consolidated and equity-accounted entities [Member] |  |  |
Disclosure of information about consolidated structured entities [Line Items] |  |  |
Beginning balance | 525 | 608 | 601
Ending balance | 422 | 525 | 608
Beginning balance | 68 | 71 | 73
Ending balance | 58 | 68 | 71
Beginning balance | Bcf | 2,923 | 3,072 | 3,016
Ending balance | Bcf | 2,520 | 2,923 | 3,072
Beginning balance | 1,113 | 1,226 | 1,212
Ending balance | 929 | 1,113 | 1,226
Worldwide [Member] | Consolidated and equity-accounted entities [Member] | Proved reserves, developed [Member] |  |  |
Disclosure of information about consolidated structured entities [Line Items] |  |  |
Beginning balance | 380 | 440 | 447
Ending balance | 286 | 380 | 440
Beginning balance | 53 | 56 | 53
Ending balance | 47 | 53 | 56
Beginning balance | Bcf | 2,143 | 2,210 | 2,267
Ending balance | Bcf | 1,850 | 2,143 | 2,210
Beginning balance | 815 | 889 | 905
Ending balance | 663 | 815 | 889
Worldwide [Member] | Consolidated and equity-accounted entities [Member] | Proved reserves, undeveloped [Member] |  |  |
Disclosure of information about consolidated structured entities [Line Items] |  |  |
Beginning balance | 145 | 168 | 154
Ending balance | 136 | 145 | 168
Beginning balance | 15 | 15 | 20
Ending balance | 11 | 15 | 15
Beginning balance | Bcf | 780 | 862 | 749
Ending balance | Bcf | 670 | 780 | 862
Beginning balance | 298 | 337 | 307
Ending balance | 266 | 298 | 337
Argentina [member] | Equity-accounted entities [Member] |  |  |
Disclosure of information about consolidated structured entities [Line Items] |  |  |
Sale of minerals in place | 0 | 0 | 0
Improved recovery | 0 | 0 | 0
Purchase of minerals in place | 0 | 0 | 0
Argentina [member] | Consolidated entities [Member] |  |  |
Disclosure of information about consolidated structured entities [Line Items] |  |  |
Beginning balance | 525 | 607 | 600
Revisions of previous estimates | (72) | (74) | 31
Extensions and discoveries | 19 | 45 | 44
Improved recovery | 33 | 35 | 23
Purchase of minerals in place |  | 2 |
Sale of minerals in place | 0 | 0 | 0
Production for the year | (83) | (90) | (91)
Ending balance | 422 | 525 | 607
Beginning balance | 68 | 71 | 73
Revisions of previous estimates | 4 | 5 | 9
Extensions and discoveries | 5 | 11 | 10
Improved recovery | 0 | 0 | 0
Purchase of minerals in place | 0 | 0 | 0
Sale of minerals in place |  |  | (3)
Production for the year | (19) | (19) | (18)
Ending balance | 58 | 68 | 71
Beginning balance | Bcf | 2,923 | 3,067 | 3,011
Revisions of previous estimates | Bcf | (161) | (105) | 174
Extensions and discoveries | Bcf | 313 | 371 | 520
Improved recovery | Bcf |  | 1 | 1
Purchase of minerals in place | Bcf | 12 | 165 |
Sale of minerals in place | Bcf |  |  | (70)
Production for the year | Bcf | (567) | (576) | (569)
Ending balance | Bcf | 2,520 | 2,923 | 3,067
Beginning balance | 1,113 | 1,224 | 1,210
Revisions of previous estimates | (96) | (87) | 70
Extensions and discoveries | 80 | 122 | 147
Improved recovery | 32 | 35 | 23
Purchase of minerals in place | 2 | 31 |
Sale of minerals in place |  | (1) | (16)
Production for the year | (202) | (211) | (210)
Ending balance | 929 | 1,113 | 1,224
Argentina [member] | Consolidated entities [Member] | Proved reserves, developed [Member] |  |  |
Disclosure of information about consolidated structured entities [Line Items] |  |  |
Beginning balance | 380 | 439 | 446
Ending balance | 286 | 380 | 439
Beginning balance | 53 | 56 | 53
Ending balance | 47 | 53 | 56
Beginning balance | Bcf | 2,143 | 2,205 | 2,262
Ending balance | Bcf | 1,850 | 2,143 | 2,205
Beginning balance | 815 | 887 | 903
Ending balance | 663 | 815 | 887
Argentina [member] | Consolidated entities [Member] | Proved reserves, undeveloped [Member] |  |  |
Disclosure of information about consolidated structured entities [Line Items] |  |  |
Beginning balance | 145 | 168 | 154
Ending balance | 136 | 145 | 168
Beginning balance | 15 | 15 | 20
Ending balance | 11 | 15 | 15
Beginning balance | Bcf | 780 | 862 | 749
Ending balance | Bcf | 670 | 780 | 862
Beginning balance | 298 | 337 | 307
Ending balance | 266 | 298 | 337
Argentina [member] | Consolidated and equity-accounted entities [Member] |  |  |
Disclosure of information about consolidated structured entities [Line Items] |  |  |
Beginning balance | 525 | 607 | 600
Ending balance | 422 | 525 | 607
Beginning balance | 68 | 71 | 73
Ending balance | 58 | 68 | 71
Beginning balance | Bcf | 2,923 | 3,067 | 3,011
Ending balance | Bcf | 2,520 | 2,923 | 3,067
Beginning balance | 1,113 | 1,224 | 1,210
Ending balance | 929 | 1,113 | 1,224
Argentina [member] | Consolidated and equity-accounted entities [Member] | Proved reserves, developed [Member] |  |  |
Disclosure of information about consolidated structured entities [Line Items] |  |  |
Beginning balance | 380 | 439 | 446
Ending balance | 286 | 380 | 439
Beginning balance | 53 | 56 | 53
Ending balance | 47 | 53 | 56
Beginning balance | Bcf | 2,143 | 2,205 | 2,262
Ending balance | Bcf | 1,850 | 2,143 | 2,205
Beginning balance | 815 | 887 | 903
Ending balance | 663 | 815 | 887
Argentina [member] | Consolidated and equity-accounted entities [Member] | Proved reserves, undeveloped [Member] |  |  |
Disclosure of information about consolidated structured entities [Line Items] |  |  |
Beginning balance | 145 | 168 | 154
Ending balance | 136 | 145 | 168
Beginning balance | 15 | 15 | 20
Ending balance | 11 | 15 | 15
Beginning balance | Bcf | 780 | 862 | 749
Ending balance | Bcf | 670 | 780 | 862
Beginning balance | 298 | 337 | 307
Ending balance | 266 | 298 | 337
Other foreign [Member] | Equity-accounted entities [Member] |  |  |
Disclosure of information about consolidated structured entities [Line Items] |  |  |
Sale of minerals in place | 0 | 0 | 0
Improved recovery | 0 | 0 | 0
Purchase 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 | 1
Revisions of previous estimates |  | (1) |
Sale of minerals in place | 0 | 0 | 0
Ending balance |  |  | 1
Improved recovery | 0 | 0 | 0
Purchase of minerals in place | 0 | 0 | 0
Beginning balance | Bcf |  | 5 | 5
Revisions of previous estimates | Bcf |  | (5) |
Ending balance | Bcf |  |  | 5
Beginning balance |  | 2 | 2
Revisions of previous estimates |  | (2) | 1
Production for the year |  |  | (1)
Ending balance |  |  | 2
Other foreign [Member] | Consolidated entities [Member] | Proved reserves, developed [Member] |  |  |
Disclosure of information about consolidated structured entities [Line Items] |  |  |
Beginning balance |  | 1 | 1
Ending balance |  |  | 1
Beginning balance | Bcf |  | 5 | 5
Ending balance | Bcf |  |  | 5
Beginning balance |  | 2 | 2
Ending balance |  |  | 2
Other foreign [Member] | Consolidated and equity-accounted entities [Member] |  |  |
Disclosure of information about consolidated structured entities [Line Items] |  |  |
Beginning balance |  | 1 | 1
Ending balance |  |  | 1
Beginning balance | Bcf |  | 5 | 5
Ending balance | Bcf |  |  | 5
Beginning balance |  | 2 | 2
Ending 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 | 1
Ending balance |  |  | 1
Beginning balance | Bcf |  | 5 | 5
Ending balance | Bcf |  |  | 5
Beginning balance |  | 2 | 2
Ending balance |  |  | 2

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