XML 48 R41.htm IDEA: XBRL DOCUMENT v3.22.2

SHORT-TERM AND LONG-TERM DEBT - Long-term debt narrative (Details) € in Millions, $ in Millions, R in Billions				6 Months Ended
	Jan. 14, 2022 USD ($)	Jan. 14, 2022 EUR (€)	Dec. 19, 2018 USD ($) extension_option	Jun. 30, 2022 USD ($) ratingAgency	Jun. 30, 2021 USD ($)	Jun. 30, 2022 EUR (€) ratingAgency	Jun. 30, 2022 CAD ($) ratingAgency	Jun. 30, 2022 ZAR (R) ratingAgency	May 06, 2022 EUR (€)	May 04, 2022 EUR (€)	Dec. 31, 2021 USD ($)	Nov. 29, 2021 USD ($)	Nov. 29, 2021 CAD ($)	Jun. 02, 2021 EUR (€)	Dec. 31, 2020 USD ($)	Jul. 02, 2020 USD ($)	Jul. 02, 2020 CAD ($)	Jul. 31, 2019 USD ($)	Jun. 30, 2019 USD ($)	Dec. 21, 2018 EUR (€)	Dec. 21, 2017 USD ($)	May 25, 2017 ZAR (R)	Dec. 16, 2016 EUR (€)	Apr. 30, 2015 USD ($)	Sep. 30, 2014 USD ($)	Oct. 26, 2012 USD ($)	Sep. 30, 2010 USD ($)
Disclosure of detailed information about borrowings [line items]
Number of credit rating agencies | ratingAgency				2		2	2	2
Repayments of borrowings, classified as financing activities				$ 727,000,000	$ 3,085,000,000
Foreign exchange gains arising on translation				363,000,000
Hedges of net investment in foreign operations
Disclosure of detailed information about borrowings [line items]
Hedging instrument, liabilities | €						€ 4,512.0
Hedged item, assets | €						9,934.0
5.5 billion revolving credit facility, due 2023-2025
Disclosure of detailed information about borrowings [line items]
Line of credit facility, maximum borrowing capacity			$ 5,500,000,000																					$ 5,500,000,000
Borrowings, number of extension options | extension_option			2
Borrowings, extension option term			1 year
Undrawn borrowing facilities				5,500,000,000
Notional amount				5,500,000,000
Borrowings outstanding				0							$ 0
5.4 billion revolving credit facility, due 2024
Disclosure of detailed information about borrowings [line items]
Line of credit facility, maximum borrowing capacity															$ 5,400,000,000
0.1 billion revolving credit facility, due 2023
Disclosure of detailed information about borrowings [line items]
Line of credit facility, maximum borrowing capacity															$ 100,000,000
2010 Revolving multi-currency letter of credit facility, due 2022
Disclosure of detailed information about borrowings [line items]
Line of credit facility, maximum borrowing capacity																									$ 350,000,000	$ 450,000,000	$ 500,000,000
Revolving multi-currency letter of credit facility, due 2022
Disclosure of detailed information about borrowings [line items]
Line of credit facility, maximum borrowing capacity																		$ 350,000,000
€600 million unsecured notes, due 2020
Disclosure of detailed information about borrowings [line items]
Repayments of borrowings, classified as financing activities	$ 551,000,000	€ 486.0
Notional amount | €		€ 750.0
EIB Loan, 2021 to 2023
Disclosure of detailed information about borrowings [line items]
Undrawn borrowing facilities				291,000,000		280.0
Borrowings, maximum capacity | €														€ 280.0
€350 million EIB Loan
Disclosure of detailed information about borrowings [line items]
Borrowings, maximum capacity | €																							€ 350.0
Borrowings outstanding				167,000,000		160.0					$ 215,000,000
€346.5m variable rate loan
Disclosure of detailed information about borrowings [line items]
Borrowings, maximum capacity | €										€ 346.5
€24.5m variable rate loan | Fixed
Disclosure of detailed information about borrowings [line items]
Borrowings, maximum capacity | €										24.5
€263m variable rate loan
Disclosure of detailed information about borrowings [line items]
Borrowings, maximum capacity | €										263.0
€66m variable rate loan | Fixed
Disclosure of detailed information about borrowings [line items]
Borrowings, maximum capacity | €										€ 66.0
€25m fixed rate loan
Disclosure of detailed information about borrowings [line items]
Borrowings, maximum capacity | €									€ 25.0
Other loans
Disclosure of detailed information about borrowings [line items]
Undrawn borrowing facilities				753,000,000		725.0
€235 million facility agreement
Disclosure of detailed information about borrowings [line items]
Notional amount | €																				€ 235.0
Borrowings outstanding				$ 157,000,000		€ 152.0
Borrowings, installment period				8 years 6 months
CAD 174 million financing agreement
Disclosure of detailed information about borrowings [line items]
Notional amount																$ 128,000,000	$ 174
CAD 130m financing agreement
Disclosure of detailed information about borrowings [line items]
Undrawn borrowing facilities				$ 73,000,000			$ 95
Notional amount												$ 105,000,000	$ 130
EBRD Facility | ArcelorMittal Kryvyi Rih
Disclosure of detailed information about borrowings [line items]
Borrowings, maximum capacity																					$ 175,000,000
Borrowings outstanding					$ 59,000,000														$ 175,000,000
Borrowings, maximum capacity, additional																					$ 175,000,000
4.5 billion ZAR revolving borrowing base finance facility, due 2022 | ArcelorMittal South Africa Ltd.
Disclosure of detailed information about borrowings [line items]
Line of credit facility, maximum borrowing capacity | R																						R 4.5
Borrowings outstanding				$ 74,000,000				R 1.2

X

- Definition

The amount of outstanding funds that the entity is obligated to repay.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2021-01-01
-Paragraph 55
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2021-en-r&anchor=para_55&doctype=Standard
-URIDate 2021-03-24

+ Details

Name:	ifrs-full_Borrowings
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table.

+ References

No definition available.

+ Details

Name:	ifrs-full_DisclosureOfDetailedInformationAboutBorrowingsLineItems
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The gains (losses) recognised in other comprehensive income on hedges of net investments in foreign operations, net of tax, before reclassification adjustments. [Refer: Other comprehensive income]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 39
-IssueDate 2021-01-01
-Paragraph 102
-Subparagraph a
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=39&code=ifrs-tx-2021-en-r&anchor=para_102_a&doctype=Standard
-URIDate 2021-03-24

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 7
-IssueDate 2021-01-01
-Paragraph 24C
-Subparagraph b
-Clause i
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2021-en-r&anchor=para_24C_b_i&doctype=Standard
-URIDate 2021-03-24

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 7
-IssueDate 2021-01-01
-Paragraph 24E
-Subparagraph a
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2021-en-r&anchor=para_24E_a&doctype=Standard
-URIDate 2021-03-24

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 1
-IssueDate 2021-01-01
-Paragraph 91
-Subparagraph a
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2021-en-r&anchor=para_91_a&doctype=Standard
-URIDate 2021-03-24

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 9
-IssueDate 2021-01-01
-Paragraph 6.5.13
-Subparagraph a
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=9&code=ifrs-tx-2021-en-r&anchor=para_6.5.13_a&doctype=Standard
-URIDate 2021-03-24

+ Details

Name:	ifrs-full_GainsLossesOnHedgesOfNetInvestmentsInForeignOperationsNetOfTax
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

The amount of a hedged item, recognised as an asset. [Refer: Hedged items [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 7
-IssueDate 2021-01-01
-Paragraph 24B
-Subparagraph a
-Clause i
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2021-en-r&anchor=para_24B_a_i&doctype=Standard
-URIDate 2021-03-24

+ Details

Name:	ifrs-full_HedgedItemAssets
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

The amount of a hedging instrument, recognised as a liability. [Refer: Hedging instruments [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 7
-IssueDate 2021-01-01
-Paragraph 24A
-Subparagraph a
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2021-en-r&anchor=para_24A_a&doctype=Standard
-URIDate 2021-03-24

+ Details

Name:	ifrs-full_HedgingInstrumentLiabilities
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

The nominal or face amount of a financial instrument, used to calculate payments made on that instrument.

+ 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_NotionalAmount
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	instant

X

- Definition

The cash outflow to settle borrowings, classified as financing activities. [Refer: Borrowings]

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Name IAS
-Number 7
-IssueDate 2021-01-01
-Paragraph 17
-Subparagraph d
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=7&code=ifrs-tx-2021-en-r&anchor=para_17_d&doctype=Standard
-URIDate 2021-03-24

+ Details

Name:	ifrs-full_RepaymentsOfBorrowingsClassifiedAsFinancingActivities
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

The amount of undrawn borrowing facilities that may be available for future operating activities and to settle capital commitments. [Refer: Capital commitments]

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Name IAS
-Number 7
-IssueDate 2021-01-01
-Paragraph 50
-Subparagraph a
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=7&code=ifrs-tx-2021-en-r&anchor=para_50_a&doctype=Standard
-URIDate 2021-03-24

+ Details

Name:	ifrs-full_UndrawnBorrowingFacilities
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Borrowings, Extension Option Term

+ References

No definition available.

+ Details

Name:	mt_BorrowingsExtensionOptionTerm
Namespace Prefix:	mt_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Borrowings, Installment Period

+ References

No definition available.

+ Details

Name:	mt_BorrowingsInstallmentPeriod
Namespace Prefix:	mt_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Borrowings, Maximum Capacity

+ References

No definition available.

+ Details

Name:	mt_BorrowingsMaximumCapacity
Namespace Prefix:	mt_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Borrowings, Maximum Capacity, Additional

+ References

No definition available.

+ Details

Name:	mt_BorrowingsMaximumCapacityAdditional
Namespace Prefix:	mt_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Borrowings, Number Of Extension Options

+ References

No definition available.

+ Details

Name:	mt_BorrowingsNumberOfExtensionOptions
Namespace Prefix:	mt_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Line Of Credit Facility, Maximum Borrowing Capacity1

+ References

No definition available.

+ Details

Name:	mt_LineOfCreditFacilityMaximumBorrowingCapacity1
Namespace Prefix:	mt_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Number Of Credit Rating Agencies

+ References

No definition available.

+ Details

Name:	mt_NumberOfCreditRatingAgencies
Namespace Prefix:	mt_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

X

- Details

Name:	ifrs-full_TypesOfHedgesAxis=ifrs-full_HedgesOfNetInvestmentInForeignOperationsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_BorrowingsByNameAxis=mt_FivePointFiveBillionRevolvingCreditFacilityDue20232025Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_BorrowingsByNameAxis=mt_FivePointFourBillionRevolvingCreditFacilityDue2024Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_BorrowingsByNameAxis=mt_ZeroPointOneBillionRevolvingCreditFacilityDue2023Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_BorrowingsByNameAxis=mt_TwoThousandAndTenRevolvingMulticurrencyLetterOfCreditFacilityMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_BorrowingsByNameAxis=mt_RevolvingMulticurrencyLetterOfCreditFacilityDueIn2022Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_BorrowingsByNameAxis=mt_SixHundredMillionEURUnsecuredNotesDue2020Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_BorrowingsByNameAxis=mt_EIBLoan2021To2023Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_BorrowingsByNameAxis=mt_EIBLoanDue2025Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_BorrowingsByNameAxis=mt_A3465mVariableRateLoanMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_BorrowingsByNameAxis=mt_A245mVariableRateLoanMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_TypesOfInterestRatesAxis=ifrs-full_FixedInterestRateMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_BorrowingsByNameAxis=mt_A263mVariableRateLoanMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_BorrowingsByNameAxis=mt_A66mVariableRateLoanMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_BorrowingsByNameAxis=mt_A25mFixedRateLoanMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_BorrowingsByNameAxis=mt_OtherLoansFixedFloatingDue20222029Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_BorrowingsByNameAxis=mt_TwoHundredThirtyFiveMillionEURFacilityAgreementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_BorrowingsByNameAxis=mt_OneHundredSeventyFourMillionCADFinancingAgreementDue20212022Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_BorrowingsByNameAxis=mt_OneHundredThirtyMillionCADFinancingAgreementDue20212023Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_BorrowingsByNameAxis=mt_EBRDFacilityFloatingDueIn2024Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	dei_LegalEntityAxis=mt_ArcelorMittalKryvyiRihMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_BorrowingsByNameAxis=mt_FourPointFiveBillionSouthAfricaRandRevolvingBorrowingBaseFinanceFacilityDueIn2022Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	dei_LegalEntityAxis=mt_ArcelorMittalSouthAfricaLtd.Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: