v3.25.4
EQUITY - Non-wholly Owned Subsidiaries that Have Material Non-controlling Interests (Details)
$ in Millions
 12 Months Ended
Jun. 03, 2021
Dec. 31, 2025
USD ($)
Dec. 31, 2024
USD ($)
Dec. 31, 2023
USD ($)
Jan. 01, 2051
Dec. 19, 2025
USD ($)
Dec. 17, 2024
USD ($)
Dec. 21, 2023
USD ($)
Disclosure of subsidiaries [line items]                
Net income attributable to non-controlling interests   $ 91 $ 41 $ 103        
Non-controlling interests   2,070 2,063          
Current assets   30,605 29,382          
Non-current assets   67,098 60,003          
Total assets   97,703 89,385          
Current liabilities   22,520 21,825          
Non-current liabilities   18,647 16,274          
Income (loss) from continuing operations   3,243 1,380 1,022        
Total comprehensive (loss) income   6,135 (3,100) 2,296        
Net cash provided by / (used in) operating activities   4,808 4,852 7,645        
Net cash provided by / (used in) investing activities   (4,551) (4,987) (5,848)        
Net cash provided by / (used in) financing activities   (1,766) (680) (3,666)        
Impact of currency movements on cash   504 (471) 255        
Cash and cash equivalents:                
At the beginning of the year   6,400 7,686 9,300        
At the end of the year   5,392 6,400 7,686        
Dividend to non-controlling interests   (121) (187) (162)        
Subsidiaries with material non-controlling interests                
Disclosure of subsidiaries [line items]                
Net income attributable to non-controlling interests   91 41 103        
Non-controlling interests   $ 2,070 $ 2,063          
AMSA                
Disclosure of subsidiaries [line items]                
% of non-controlling interests and non-controlling voting rights (in percent)   30.78% 30.78%          
Net income attributable to non-controlling interests   $ (42) $ (98) (67)        
Non-controlling interests   (24) 19          
Current assets   698 858          
Non-current assets   517 426          
Total assets   1,215 1,284          
Current liabilities   758 812          
Non-current liabilities   533 410          
Total net assets   (76) 62          
Revenue   1,812 2,104 2,256        
Income (loss) from continuing operations   (136) (317) (217)        
Total comprehensive (loss) income   (136) (317) (216)        
Net cash provided by / (used in) operating activities   (17) 19 52        
Net cash provided by / (used in) investing activities   (43) (64) (93)        
Net cash provided by / (used in) financing activities   21 35 27        
Impact of currency movements on cash   10 (1) (9)        
Cash and cash equivalents:                
At the beginning of the year   123 134 157        
At the end of the year   94 123 134        
Dividend to non-controlling interests   $ 0 $ 0 0        
Sonasid                
Disclosure of subsidiaries [line items]                
% of non-controlling interests and non-controlling voting rights (in percent)   67.57% 67.57%          
Net income attributable to non-controlling interests   $ 16 $ 8 3        
Non-controlling interests   $ 134 111          
Proportion of ownership interest in subsidiary (in percent)   32.43%            
Current assets   $ 362 337          
Non-current assets   146 117          
Total assets   508 454          
Current liabilities   297 273          
Non-current liabilities   23 20          
Total net assets   188 161          
Revenue   655 530 471        
Income (loss) from continuing operations   26 12 4        
Total comprehensive (loss) income   28 9 13        
Net cash provided by / (used in) operating activities   22 20 16        
Net cash provided by / (used in) investing activities   (29) (16) (20)        
Net cash provided by / (used in) financing activities   (17) (9) (13)        
Impact of currency movements on cash   7 (2) 5        
Cash and cash equivalents:                
At the beginning of the year   70 77 89        
At the end of the year   53 70 77        
Dividend to non-controlling interests   $ (10) $ (7) (4)        
Sonasid | Nouvelles Sidérurgies Industrielles                
Disclosure of subsidiaries [line items]                
Proportion of ownership interest in subsidiary (in percent) 64.86% 64.86%            
AMKR                
Disclosure of subsidiaries [line items]                
% of non-controlling interests and non-controlling voting rights (in percent)   4.87% 4.87%          
Net income attributable to non-controlling interests   $ (10) $ (11) (15)        
Non-controlling interests   26 41          
Current assets   556 576          
Non-current assets   1,219 1,157          
Total assets   1,775 1,733          
Current liabilities   1,092 872          
Non-current liabilities   232 176          
Total net assets   451 685          
Revenue   1,695 1,606 1,144        
Income (loss) from continuing operations   (214) (221) (328)        
Total comprehensive (loss) income   (232) (209) (336)        
Net cash provided by / (used in) operating activities   167 150 49        
Net cash provided by / (used in) investing activities   (137) (102) (112)        
Net cash provided by / (used in) financing activities   (31) (49) 52        
Impact of currency movements on cash   (1) (1) (1)        
Cash and cash equivalents:                
At the beginning of the year   12 14 26        
At the end of the year   10 12 14        
Dividend to non-controlling interests   $ 0 $ 0 0        
Belgo Bekaert Arames ("BBA")                
Disclosure of subsidiaries [line items]                
% of non-controlling interests and non-controlling voting rights (in percent)   45.00% 45.00%          
Net income attributable to non-controlling interests   $ 47 $ 56 55        
Non-controlling interests   200 186          
Current assets   267 246          
Non-current assets   207 183          
Total assets   474 429          
Current liabilities   103 87          
Non-current liabilities   14 14          
Total net assets   357 328          
Revenue   753 818 915        
Income (loss) from continuing operations   108 122 128        
Total comprehensive (loss) income   110 118 127        
Net cash provided by / (used in) operating activities   146 126 209        
Net cash provided by / (used in) investing activities   (17) (7) (66)        
Net cash provided by / (used in) financing activities   (125) (117) (148)        
Impact of currency movements on cash   (1) (4) 1        
Cash and cash equivalents:                
At the beginning of the year   12 14 18        
At the end of the year   15 12 14        
Dividend to non-controlling interests   $ (52) $ (49) (62)        
Hera Ermac                
Disclosure of subsidiaries [line items]                
% of non-controlling interests and non-controlling voting rights (in percent)   0.00% 0.00%          
Net income attributable to non-controlling interests   $ 0 $ 0 0        
Non-controlling interests   555 532          
Current assets   232 199          
Non-current assets   990 990          
Total assets   1,222 1,189          
Current liabilities   60 55          
Non-current liabilities   137 175          
Total net assets   1,025 959          
Revenue   0 0 0        
Income (loss) from continuing operations   43 62 (51)        
Total comprehensive (loss) income   43 62 (51)        
Net cash provided by / (used in) operating activities   34 37 33        
Net cash provided by / (used in) investing activities   (34) (36) 509        
Net cash provided by / (used in) financing activities   0 (1) (535)        
Impact of currency movements on cash   0 0 0        
Cash and cash equivalents:                
At the beginning of the year   7 7 0        
At the end of the year   7 7 7        
Dividend to non-controlling interests   $ 0 $ 0 0        
AMMC                
Disclosure of subsidiaries [line items]                
% of non-controlling interests and non-controlling voting rights (in percent)   15.00% 15.00%          
Net income attributable to non-controlling interests   $ 94 $ 109 149        
Non-controlling interests   591 543          
Current assets   1,687 1,517          
Non-current assets   3,365 3,252          
Total assets   5,052 4,769          
Current liabilities   486 499          
Non-current liabilities   497 479          
Total net assets   4,069 3,791          
Revenue   3,062 2,921 3,216        
Income (loss) from continuing operations   620 710 943        
Total comprehensive (loss) income   634 720 935        
Net cash provided by / (used in) operating activities   881 1,055 997        
Net cash provided by / (used in) investing activities   (540) (81) (553)        
Net cash provided by / (used in) financing activities   (368) (872) (538)        
Impact of currency movements on cash   0 0 0        
Cash and cash equivalents:                
At the beginning of the year   214 112 206        
At the end of the year   187 214 112        
Dividend to non-controlling interests   $ (54) $ (128) (79)        
Finocas                
Disclosure of subsidiaries [line items]                
% of non-controlling interests and non-controlling voting rights (in percent)   50.00% 50.00%          
Net income attributable to non-controlling interests   $ 3 $ 2 1        
Non-controlling interests   $ 340 297          
Proportion of ownership interest in subsidiary (in percent)   50.00%            
Current assets   $ 449 390          
Non-current assets   231 205          
Total assets   680 595          
Current liabilities   2 2          
Non-current liabilities   0 0          
Total net assets   678 593          
Revenue   8 8 0        
Income (loss) from continuing operations   6 4 2        
Total comprehensive (loss) income   6 4 2        
Net cash provided by / (used in) operating activities   7 5 1        
Net cash provided by / (used in) investing activities   (7) (350) (1)        
Net cash provided by / (used in) financing activities   0 344 0        
Impact of currency movements on cash   0 1 0        
Cash and cash equivalents:                
At the beginning of the year   0 0 0        
At the end of the year   0 0 0        
Dividend to non-controlling interests   $ 0 $ 0 0        
Finocas | Forecast                
Disclosure of subsidiaries [line items]                
Right to acquire equity portion obtained         0.50      
Arceo5                
Disclosure of subsidiaries [line items]                
% of non-controlling interests and non-controlling voting rights (in percent)   38.11% 62.86%          
Net income attributable to non-controlling interests   $ 2 $ 5 3        
Non-controlling interests   65 143          
Current assets   139 199          
Non-current assets   31 32          
Total assets   170 231          
Current liabilities   0 0          
Non-current liabilities   0 0          
Total net assets   170 231          
Revenue   0 0 0        
Income (loss) from continuing operations   5 8 5        
Total comprehensive (loss) income   5 8 5        
Net cash provided by / (used in) operating activities   7 6 10        
Net cash provided by / (used in) investing activities   23 (1) (7)        
Net cash provided by / (used in) financing activities   (96) (6) (3)        
Impact of currency movements on cash   13 (6) 2        
Cash and cash equivalents:                
At the beginning of the year   88 95 93        
At the end of the year   35 88 95        
Dividend to non-controlling interests   $ (5) $ (3) (2)        
AML                
Disclosure of subsidiaries [line items]                
% of non-controlling interests and non-controlling voting rights (in percent)   15.00% 15.00%          
Net income attributable to non-controlling interests   $ (20) $ (18) (11)        
Non-controlling interests   (154) (156)          
Fully settled capital increase           $ 150 $ 200 $ 100
Fully settled capital increase on behalf of non-controlling interests           $ 23 $ 30 $ 15
Current assets   358 253          
Non-current assets   2,026 1,518          
Total assets   2,384 1,771          
Current liabilities   1,074 1,143          
Non-current liabilities   2,143 1,500          
Total net assets   (833) (872)          
Revenue   539 188 248        
Income (loss) from continuing operations   (113) (118) (85)        
Total comprehensive (loss) income   (113) (118) (85)        
Net cash provided by / (used in) operating activities   117 16 90        
Net cash provided by / (used in) investing activities   (551) (579) (314)        
Net cash provided by / (used in) financing activities   434 560 225        
Impact of currency movements on cash   0 0 0        
Cash and cash equivalents:                
At the beginning of the year   2 5 4        
At the end of the year   2 2 5        
Dividend to non-controlling interests   $ 0 $ 0 0        
ArcelorMittal Texas HBI LLC                
Disclosure of subsidiaries [line items]                
% of non-controlling interests and non-controlling voting rights (in percent)   20.00% 20.00%          
Net income attributable to non-controlling interests   $ (12) $ (17) (8)        
Non-controlling interests   187 199          
Current assets   473 404          
Non-current assets   584 713          
Total assets   1,057 1,117          
Current liabilities   96 97          
Non-current liabilities   24 24          
Total net assets   937 996          
Revenue   621 599 732        
Income (loss) from continuing operations   (58) (88) (40)        
Total comprehensive (loss) income   (58) (85) (43)        
Net cash provided by / (used in) operating activities   94 87 125        
Net cash provided by / (used in) investing activities   (157) (19) (122)        
Net cash provided by / (used in) financing activities   0 0 (6)        
Impact of currency movements on cash   0 0 0        
Cash and cash equivalents:                
At the beginning of the year   69 1 4        
At the end of the year   6 69 1        
Dividend to non-controlling interests   0 0 (1)        
Other                
Disclosure of subsidiaries [line items]                
Net income attributable to non-controlling interests   13 5 $ (7)        
Non-controlling interests   $ 150 $ 148          
Nouvelles Sidérurgies Industrielles                
Disclosure of subsidiaries [line items]                
Proportion of ownership interest in subsidiary (in percent) 50.00% 50.00%