XML 61 R54.htm IDEA: XBRL DOCUMENT
v3.22.2

COMMITMENTS - Schedule of commitments (Details) - USD ($) $ in Millions | Jun. 30, 2022 | Dec. 31, 2021
--- | --- | ---
Subclassifications of assets, liabilities and equities [abstract] |  |
Purchase commitments | $ 14,218 | $ 13,509
Guarantees, pledges and other collateral | 8,159 | 8,003
Capital expenditure commitments | 178 | 330
Other commitments | 1,549 | 1,576
Total | $ 24,104 | $ 23,418

X
- Definition The amount of future capital expenditures that the entity is committed to make. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2021-01-01 -Paragraph 112 -Subparagraph c -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2021-en-r&anchor=para_112_c&doctype=Standard -URIDate 2021-03-24 + Details
Name: | ifrs-full_CapitalCommitments
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- References No definition available. + Details
Name: | ifrs-full_SubclassificationsOfAssetsLiabilitiesAndEquitiesAbstract
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Contractual Obligation + References No definition available. + Details
Name: | mt_ContractualObligation1
Namespace Prefix: | mt_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Guarantees, Pledges and Other Collateral + References No definition available. + Details
Name: | mt_GuaranteesPledgesandOtherCollateral
Namespace Prefix: | mt_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Other Commitments1 + References No definition available. + Details
Name: | mt_OtherCommitments1
Namespace Prefix: | mt_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Purchase Commitments1 + References No definition available. + Details
Name: | mt_PurchaseCommitments1
Namespace Prefix: | mt_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant