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Rotable spare parts, furniture and equipment, net - Reconciliation of changes (Details)
$ in Thousands, $ in Thousands
 12 Months Ended
Dec. 31, 2019
USD ($)
Dec. 31, 2019
MXN ($)
Dec. 31, 2018
MXN ($)
Dec. 31, 2017
MXN ($)
Rotable spare parts, furniture and equipment, net        
Balance at beginning of the year   $ 5,782,282 $ 4,375,697 $ 2,525,008
Additions   3,310,803 2,693,397 2,584,232
Disposals and transfers   (1,247,357) (974,055) (319,671)
Borrowing costs, net   127,742 115,242 83,115
Other movements   (287) (243) (696)
Depreciation   (587,849) (427,756) (496,291)
Balance at end of the year $ 391,895 7,385,334 5,782,282 4,375,697
Gross value        
Rotable spare parts, furniture and equipment, net        
Balance at beginning of the year   8,487,429 6,655,478  
Balance at end of the year   10,877,907 8,487,429 6,655,478
Accumulated depreciation / amortization        
Rotable spare parts, furniture and equipment, net        
Balance at beginning of the year   (2,705,147) (2,279,781)  
Balance at end of the year   (3,492,573) (2,705,147) (2,279,781)
Aircraft spare engines        
Rotable spare parts, furniture and equipment, net        
Depreciation   (1,787)    
Balance at end of the year   54,771    
Flight equipment        
Rotable spare parts, furniture and equipment, net        
Balance at beginning of the year   664,322 630,922 577,498
Additions   692,186 366,371 115,558
Disposals and transfers   (538,370) (261,866) (930)
Depreciation   (84,888) (71,105) (61,204)
Balance at end of the year   733,250 664,322 630,922
Flight equipment | Gross value        
Rotable spare parts, furniture and equipment, net        
Balance at beginning of the year   932,642 830,145  
Balance at end of the year   1,287,102 932,642 830,145
Flight equipment | Accumulated depreciation / amortization        
Rotable spare parts, furniture and equipment, net        
Balance at beginning of the year   (268,320) (199,223)  
Balance at end of the year   (553,852) (268,320) (199,223)
Constructions and improvements        
Rotable spare parts, furniture and equipment, net        
Balance at beginning of the year   15,235 25,168 35,013
Additions   5,596 689  
Other movements   34,840 67 10,371
Depreciation   (14,721) (10,689) (20,216)
Balance at end of the year   40,950 15,235 25,168
Constructions and improvements | Gross value        
Rotable spare parts, furniture and equipment, net        
Balance at beginning of the year   132,446 131,503  
Balance at end of the year   172,460 132,446 131,503
Constructions and improvements | Accumulated depreciation / amortization        
Rotable spare parts, furniture and equipment, net        
Balance at beginning of the year   (117,211) (106,335)  
Balance at end of the year   (131,510) (117,211) (106,335)
Computer equipment        
Rotable spare parts, furniture and equipment, net        
Balance at beginning of the year   16,547 9,323 7,200
Additions   1,730 5,316 1,845
Disposals and transfers   (131)    
Other movements   1,999 9,123 4,087
Depreciation   (7,074) (7,215) (3,809)
Balance at end of the year   13,071 16,547 9,323
Computer equipment | Gross value        
Rotable spare parts, furniture and equipment, net        
Balance at beginning of the year   44,563 30,113  
Balance at end of the year   47,566 44,563 30,113
Computer equipment | Accumulated depreciation / amortization        
Rotable spare parts, furniture and equipment, net        
Balance at beginning of the year   (28,016) (20,790)  
Balance at end of the year   (34,495) (28,016) (20,790)
Office furniture and equipment        
Rotable spare parts, furniture and equipment, net        
Balance at beginning of the year   38,306 22,295 17,657
Additions   1,461 652 6,805
Disposals and transfers   (10)   (15)
Other movements   2,757 21,568 1,649
Depreciation   (5,854) (6,209) (3,801)
Balance at end of the year   36,660 38,306 22,295
Office furniture and equipment | Gross value        
Rotable spare parts, furniture and equipment, net        
Balance at beginning of the year   66,546 44,749  
Balance at end of the year   70,709 66,546 44,749
Office furniture and equipment | Accumulated depreciation / amortization        
Rotable spare parts, furniture and equipment, net        
Balance at beginning of the year   (28,240) (22,454)  
Balance at end of the year   (34,049) (28,240) (22,454)
Electric power equipment        
Rotable spare parts, furniture and equipment, net        
Balance at beginning of the year   5,122 6,254 6,928
Additions   2,487    
Other movements   2,487   620
Depreciation   (1,084) (1,132) (1,294)
Balance at end of the year   9,012 5,122 6,254
Electric power equipment | Gross value        
Rotable spare parts, furniture and equipment, net        
Balance at beginning of the year   15,438 15,439  
Balance at end of the year   20,412 15,438 15,439
Electric power equipment | Accumulated depreciation / amortization        
Rotable spare parts, furniture and equipment, net        
Balance at beginning of the year   (10,316) (9,185)  
Balance at end of the year   (11,400) (10,316) (9,185)
Workshop tools        
Rotable spare parts, furniture and equipment, net        
Balance at beginning of the year   3,369 2,271 4,585
Additions   3,137 2,673  
Other movements   284 281  
Depreciation   (1,938) (1,856) (2,314)
Balance at end of the year   4,852 3,369 2,271
Workshop tools | Gross value        
Rotable spare parts, furniture and equipment, net        
Balance at beginning of the year   23,454 20,500  
Balance at end of the year   26,875 23,454 20,500
Workshop tools | Accumulated depreciation / amortization        
Rotable spare parts, furniture and equipment, net        
Balance at beginning of the year   (20,085) (18,229)  
Balance at end of the year   (22,023) (20,085) (18,229)
Motorized transport equipment platform        
Rotable spare parts, furniture and equipment, net        
Balance at beginning of the year   446 886 1,357
Other movements   9,529 42  
Depreciation   (341) (482) (471)
Balance at end of the year   9,634 446 886
Motorized transport equipment platform | Gross value        
Rotable spare parts, furniture and equipment, net        
Balance at beginning of the year   5,496 5,587  
Balance at end of the year   15,026 5,496 5,587
Motorized transport equipment platform | Accumulated depreciation / amortization        
Rotable spare parts, furniture and equipment, net        
Balance at beginning of the year   (5,050) (4,701)  
Balance at end of the year   (5,392) (5,050) (4,701)
Communications equipment        
Rotable spare parts, furniture and equipment, net        
Balance at beginning of the year   4,911 4,727 3,555
Additions   355 1,050  
Disposals and transfers   (2)    
Other movements   1,446 26 1,968
Depreciation   (933) (892) (796)
Balance at end of the year   5,777 4,911 4,727
Communications equipment | Gross value        
Rotable spare parts, furniture and equipment, net        
Balance at beginning of the year   12,305 11,229  
Balance at end of the year   14,099 12,305 11,229
Communications equipment | Accumulated depreciation / amortization        
Rotable spare parts, furniture and equipment, net        
Balance at beginning of the year   (7,394) (6,502)  
Balance at end of the year   (8,322) (7,394) (6,502)
Workshop machinery and equipment        
Rotable spare parts, furniture and equipment, net        
Balance at beginning of the year   4,481 4,060 3,618
Additions   4,278 1,040 123
Disposals and transfers   (35) (2)  
Other movements   2,529 110 1,041
Depreciation   (1,044) (727) (722)
Balance at end of the year   10,209 4,481 4,060
Workshop machinery and equipment | Gross value        
Rotable spare parts, furniture and equipment, net        
Balance at beginning of the year   9,530 8,405  
Balance at end of the year   16,301 9,530 8,405
Workshop machinery and equipment | Accumulated depreciation / amortization        
Rotable spare parts, furniture and equipment, net        
Balance at beginning of the year   (5,049) (4,345)  
Balance at end of the year   (6,092) (5,049) (4,345)
Service carts on board        
Rotable spare parts, furniture and equipment, net        
Balance at beginning of the year   126 382 758
Additions   2,273    
Depreciation   (278) (256) (376)
Balance at end of the year   2,121 126 382
Service carts on board | Gross value        
Rotable spare parts, furniture and equipment, net        
Balance at beginning of the year   5,403 5,403  
Balance at end of the year   7,675 5,403 5,403
Service carts on board | Accumulated depreciation / amortization        
Rotable spare parts, furniture and equipment, net        
Balance at beginning of the year   (5,277) (5,021)  
Balance at end of the year   (5,554) (5,277) (5,021)
Allowance for obsolescence [Member]        
Rotable spare parts, furniture and equipment, net        
Additions   3,000    
Balance at end of the year   3,000    
Allowance for obsolescence [Member] | Gross value        
Rotable spare parts, furniture and equipment, net        
Balance at end of the year   3,000    
Pre-delivery payments        
Rotable spare parts, furniture and equipment, net        
Balance at beginning of the year   3,672,090 2,783,303 1,206,330
Additions   1,412,790 1,485,643 1,707,805
Disposals and transfers   (704,852) (712,098) (213,947)
Borrowing costs, net   127,742 115,242 83,115
Balance at end of the year   4,507,770 3,672,090 2,783,303
Pre-delivery payments | Gross value        
Rotable spare parts, furniture and equipment, net        
Balance at beginning of the year   3,672,090 2,783,303  
Balance at end of the year   4,507,770 3,672,090 2,783,303
Construction and improvements in process        
Rotable spare parts, furniture and equipment, net        
Balance at beginning of the year   142,738 193,607 255,374
Additions   525,556 142,703 206,932
Disposals and transfers   (3,957) (89) (3,555)
Other movements   (190,097) (193,483) (265,144)
Balance at end of the year   474,240 142,738 193,607
Construction and improvements in process | Gross value        
Rotable spare parts, furniture and equipment, net        
Balance at beginning of the year   142,738 193,607  
Balance at end of the year   474,240 142,738 193,607
Leasehold improvements to flight equipment        
Rotable spare parts, furniture and equipment, net        
Balance at beginning of the year   1,214,589 692,499 405,135
Additions   661,954 687,260 545,164
Disposals and transfers       (101,224)
Other movements   133,939 162,023 244,712
Depreciation   (469,694) (327,193) (401,288)
Balance at end of the year   1,540,788 1,214,589 692,499
Leasehold improvements to flight equipment | Gross value        
Rotable spare parts, furniture and equipment, net        
Balance at beginning of the year   3,424,778 2,575,495  
Balance at end of the year   4,220,672 3,424,778 2,575,495
Leasehold improvements to flight equipment | Accumulated depreciation / amortization        
Rotable spare parts, furniture and equipment, net        
Balance at beginning of the year   (2,210,189) (1,882,996)  
Balance at end of the year   $ (2,679,884) $ (2,210,189) $ (1,882,996)