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GOODWILL, INTANGIBLE AND TANGIBLE ASSETS (Tables)
 12 Months Ended
Dec. 31, 2021
Intangible Assets [Abstract]  
Schedule of Goodwill and Intangible Assets
The carrying amounts of goodwill and intangible assets are summarized as follows:
 December 31,
 20212020
Goodwill on acquisitions3,931 3,992 
Concessions, patents and licenses195 190 
Customer relationships and trade marks80 90 
Other1
219 40 
Total4,425 4,312 
1.Includes 167 relating to emission rights in 2021.
Other intangible assets are summarized as follows:
 Concessions, patents and licensesCustomer relationships and trade marksOtherTotal
Cost    
At December 31, 2019630 1,133 147 1,910 
Acquisitions17 — 35 52 
Disposals(8)— (2)(10)
Divestment (note 2.3.1)(251)(9)— (260)
Foreign exchange differences16 24 11 51 
Transfers to assets held for sale (note 2.3.2)(12)— (11)(23)
Transfers and other movements37 — — 37 
Fully amortized intangible assets 1
(29)— — (29)
At December 31, 2020400 1,148 180 1,728 
Acquisitions2
35 — 210 245 
Disposal(6)— — (6)
Foreign exchange differences(54)(69)(21)(144)
Transfers from assets held for sale (note 2.3.2)12 — 11 23 
Transfers and other movements30 2 10 42 
At December 31, 2021417 1,081 390 1,888 
Accumulated amortization and impairment losses
At December 31, 2019433 1,038 111 1,582 
Disposal(7)— — (7)
Divestment (note 2.3.1)(239)(9)— (248)
Amortization charge47 10 30 87 
Impairment charge (note 5.3)4 — — 4 
Foreign exchange differences17 19 8 44 
Transfers to assets held for sale (note 2.3.2)(12)— (9)(21)
Transfers and other movements(4)— — (4)
Fully amortized intangible assets 1
(29)— — (29)
At December 31, 2020210 1,058 140 1,408 
Disposals(5)— — (5)
Amortization charge50 7 33 90 
Foreign exchange differences(44)(64)(13)(121)
Transfers from assets held for sale (note 2.3.2)9 — 9 18 
Transfers and other movements2 — 2 4 
At December 31, 2021222 1,001 171 1,394 
Carrying amount
At December 31, 2020190 90 40 320 
At December 31, 2021195 80 219 494 
1.Fully amortized intangible assets correspond mainly to licenses in 2020.
2.Acquisitions in 'other' mainly relate to CO2 emission rights in 2021.
Schedule of Goodwill Acquired
Goodwill acquired in business combinations for each of the Company’s operating segments is as follows:
 December 31, 2020Divestments and assets held for saleForeign exchange differences and other movementsDecember 31, 2021
NAFTA1,566 — 10 1,576 
Brazil1,069 — (59)1,010 
Europe540 — (41)499 
ACIS817 — 29 846 
Total3,992 — (61)3,931 
 December 31, 2019
Divestments and assets held for sale1
Foreign exchange differences and other movementsDecember 31, 2020
NAFTA2,233 (672)5 1,566 
Brazil1,353 — (284)1,069 
Europe545 (45)40 540 
ACIS973 — (156)817 
Total5,104 (717)(395)3,992 
1. See notes 2.3.1 and 2.3.2
Schedule of Property, Plant and Equipment Except for land and assets used in mining activities, property, plant and equipment is depreciated using the straight-line method over the useful lives of the related assets as presented in the table below.
Asset Category Useful Life Range
LandNot depreciated
Buildings
10 to 50 years
Property plant & equipment
15 to 64 years
Auxiliary facilities
15 to 60 years
Other facilities
5 to 20 years
Property, plant and equipment and biological assets are summarized as follows: 
 Land, buildings and
Improvements
Machinery,  equipment and other2
Construction in progressRight-of-use assetsMining
 Assets		Total
Cost     
At December 31, 201910,897 44,628 5,490 2,092 4,113 67,220 
Additions27 172 1,857 233 23 2,312 
Foreign exchange differences621 1,121 (129)36 (130)1,519 
Disposals(62)(630)(19)— (4)(715)
Divestments (note 2.3.1)(858)(8,559)(261)(449)(766)(10,893)
Transfers to assets held for sale (note 2.3.2)(461)(1,911)(612)(89)— (3,073)
Other movements 1
574 1,778 (2,363)(225)48 (188)
At December 31, 202010,738 36,599 3,963 1,598 3,284 56,182 
Additions16 239 2,416 313 11 2,995 
Acquisitions through business combinations (note 2.2.4)34 5 — — — 39 
Foreign exchange differences(910)(3,311)(97)(104)(14)(4,436)
Disposals(66)(553)(2)— (5)(626)
Transfers from assets held for sale (note 2.3.2)156 827 14 2 — 999 
Other movements 1
153 1,542 (1,761)(59)131 6 
At December 31, 202110,121 35,348 4,533 1,750 3,407 55,159 
Accumulated depreciation and impairment
At December 31, 20193,488 22,889 991 857 2,764 30,989 
Depreciation charge for the year338 2,188 — 212 135 2,873 
Impairment (note 5.3)111 (280)29 3 — (137)
Disposals(40)(591)(7)— (3)(641)
Foreign exchange differences424 1,189 8 8 (102)1,527 
Divestments (note 2.3.1)(527)(6,002)(5)(300)(718)(7,552)
Transfers to assets held for sale (note 2.3.2)(163)(1,045)(13)(9)— (1,230)
Other movements 1
177 (212)(9)(212)(13)(269)
At December 31, 20203,808 18,136 994 559 2,063 25,560 
Depreciation charge for the year320 1,801 — 190 122 2,433 
Impairment reversal (note 5.3)(37)(181)— — — (218)
Disposals(49)(517)— — (5)(571)
Foreign exchange differences(546)(2,459)(10)(37)(13)(3,065)
Transfers from assets held for sale (note 2.3.2)154 804 7 — — 965 
Other movements 1
(7)12 8 (34)1 (20)
At December 31, 20213,643 17,596 999 678 2,168 25,084 
Carrying amount
At December 31, 20206,930 18,463 2,969 1,039 1,221 30,622 
At December 31, 20216,478 17,752 3,534 1,072 1,239 30,075 
1.Other movements predominantly represent transfers from construction in progress to other categories and retirement of fully depreciated assets.
2.Machinery, equipment and other includes biological assets of 38 and 45 as of December 31, 2021 and 2020, respectively, and bearer plants of 29 and 29 as of December 31, 2021 and 2020, respectively.
Schedule of Impairment of Assets
Net impairment (reversals)/charges recognized were as follows:
 Year ended December 31,
Type of asset202120202019
Tangible assets(218)(133)1,927 
Total(218)(133)1,927 
GCGU weighted average pre-tax discount rates were as follows in 2021 and 2020:
 NAFTABrazilEuropeACIS
GCGU weighted average pre-tax discount rate used in 2021 (in %)11.315.68.614.7
GCGU weighted average pre-tax discount rate used in 2020 (in %)10.515.98.514.6
Cash-Generating UnitRegionOperating SegmentImpairment Reversed2021 Pre-Tax Discount Rate2020 Pre-Tax Discount RateCarrying amount of property, plant and equipment as of December 31, 2021
Europe flat productsEuropeEurope218 8.53 %8.47 %11,005 
During the six months ended June 30, 2019, the Company recognized an impairment charge for property, plant and equipment amounting to 600 relating to ArcelorMittal USA as a result of a downward revision of cash flow projections in particular with respect to near-term steel selling prices as follows:
Cash-Generating UnitCountryOperating SegmentImpairment Recorded2019 Pre-Tax Discount Rate2018 Pre-Tax Discount RateCarrying amount of property, plant and equipment as of June 30, 2019
ArcelorMittal USAUSANAFTA600 13.98 %16.91 %3,213 
In the second half of 2019, in connection with management’s annual test for impairment of goodwill, property, plant and equipment was also tested for impairment at that date. The Company recognized an impairment charge for property, plant
and equipment amounting to 700 relating to ArcelorMittal USA in the NAFTA operating segment as a result of a downward revision of cash flow projections in particular with respect to near-term steel selling prices consisting of the following:
Cash-Generating UnitCountryOperating SegmentImpairment Recorded2019 Pre-Tax Discount Rate2018 Pre-Tax Discount RateCarrying amount of property, plant and equipment as of December 31, 2019
ArcelorMittal USAUSANAFTA700 10.17 %16.91 %2,568 
In the same context, the Company recognized a impairment charge for property, plant and equipment of 75 relating to the
Long Steel Products facility of Newcastle in ArcelorMittal South Africa as a result of a lower domestic volumes as follows:
Cash-Generating UnitCountryOperating SegmentImpairment Recorded2019 Pre-Tax Discount Rate2018 Pre-Tax Discount RateCarrying amount of property, plant and equipment as of December 31, 2019
Long Steel ProductsSouth AfricaACIS75 13.87 %15.13 %163