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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
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