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Statements of Consolidated Changes in Equity - USD ($) $ in Millions | Total | ArcelorMittal USA | Common Stock | Capital in Excess of Par Value of Shares | Retained Earnings (Deficit) | Common Shares in Treasury | AOCI (Loss) | Non- controlling Interests | Non- controlling Interests ArcelorMittal USA
--- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Balance, beginning of period (in shares) at Dec. 31, 2020 |  |  | 477,500,000 |  |  |  |  |  |
Balance, beginning of period at Dec. 31, 2020 | $ 2,341 |  | $ 63 | $ 5,431 | $ (2,989) | $ (354) | $ (133) | $ 323 |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |
Comprehensive income (loss) | 3,784 |  |  |  | 2,988 |  | 751 | 45 |
Issuance of common shares (in shares) |  |  | 20,000,000.0 |  |  |  |  |  |
Issuance of common shares | 322 |  |  | 78 |  | 244 |  |  |
Stock and other incentive plans (in shares) |  |  | 2,600,000 |  |  |  |  |  |
Stock and other incentive plans, APIC |  |  |  | (8) |  |  |  |  |
Stock and other incentive plans | 20 |  |  |  |  | 28 |  |  |
Series B Redeemable Preferred Stock redemption | (604) |  |  | (604) |  |  |  |  |
1.500% 2025 Convertible Senior Notes redemption | (5) |  |  | (5) |  |  |  |  |
Acquisition of ArcelorMittal USA - Measurement period adjustments |  | $ (22) |  |  |  |  |  |  | $ (22)
Net distributions to noncontrolling interests | (62) |  |  |  |  |  |  | (62) |
Balance, end of period (in shares) at Dec. 31, 2021 |  |  | 500,100,000 |  |  |  |  |  |
Balance, end of period at Dec. 31, 2021 | 5,774 |  | $ 63 | 4,892 | (1) | (82) | 618 | 284 |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |
Comprehensive income (loss) | 2,588 |  |  |  | 1,335 |  | 1,212 | 41 |
Stock and other incentive plans (in shares) |  |  | 1,500,000 |  |  |  |  |  |
Stock and other incentive plans, APIC |  |  |  | 7 |  |  |  |  |
Stock and other incentive plans | 19 |  |  |  |  | 12 |  |  |
1.500% 2025 Convertible Senior Notes redemption (in shares) |  |  | 24,200,000 |  |  |  |  |  |
1.500% 2025 Convertible Senior Notes redemption |  |  | $ 3 |  |  |  |  |  |
1.500% 2025 Convertible Senior Notes redemption | (25) |  |  | (28) |  |  |  |  |
Common stock repurchases (in shares) |  |  | (12,500,000) |  |  |  |  |  |
Common share repurchases, net of excise tax | (240) |  |  |  |  | (240) |  |  |
Net distributions to noncontrolling interests | $ (74) |  |  |  |  |  |  | (74) |
Balance, end of period (in shares) at Dec. 31, 2022 | 513,340,779 |  | 513,300,000 |  |  |  |  |  |
Balance, end of period at Dec. 31, 2022 | $ 8,042 |  | $ 66 | 4,871 | 1,334 | (310) | 1,830 | 251 |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |
Comprehensive income (loss) | 277 |  |  |  | 399 |  | (173) | 51 |
Stock and other incentive plans (in shares) |  |  | 2,000,000.0 |  |  |  |  |  |
Stock and other incentive plans, APIC |  |  |  | (10) |  |  |  |  |
Stock and other incentive plans | 23 |  |  |  |  | 33 |  |  |
Common stock repurchases (in shares) |  |  | (10,400,000) |  |  |  |  |  |
Common share repurchases, net of excise tax | (153) |  |  |  |  | (153) |  |  |
Net distributions to noncontrolling interests | $ (67) |  |  |  |  |  |  | (67) |
Balance, end of period (in shares) at Dec. 31, 2023 | 504,886,773 |  | 504,900,000 |  |  |  |  |  |
Balance, end of period at Dec. 31, 2023 | $ 8,122 |  | $ 66 | $ 4,861 | $ 1,733 | $ (430) | $ 1,657 | $ 235 |

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