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Consolidated Statement of Comprehensive Income - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Consolidated Statement of Comprehensive Income      
Net income (loss) $ 4,531 $ (2,180) $ 6,896
Items that will not be subsequently reclassified to income statement      
Translation adjustments (9,160) (1,677) (6,762)
Retirement benefit obligations (88) (126) 41
Fair value adjustment to investment in equity securities 101 (184) 60
Transfer to reserve     (16)
Total items that will not be subsequently reclassified to income statement, net of tax (9,147) (1,987) (6,677)
Items that may be subsequently reclassified to income statement      
Translation adjustment 4,203 1,111 3,899
Net investments hedge (578) (74) (543)
Cash flow hedge (105) 102  
Transfer of realized results to net income 135   (78)
Total of items that may be subsequently reclassified to income statement, net of tax 3,655 1,139 3,278
Total comprehensive income (loss) (961) (3,028) 3,497
Comprehensive income (loss) attributable to noncontrolling interests (318) (512) (84)
Comprehensive income (loss) attributable to Vale's stockholders (643) (2,516) 3,581
From continuing operations (643) (2,516) 3,589
From discontinued operations     (8)
Comprehensive income (loss) attributable to Vale's stockholders $ (643) $ (2,516) $ 3,581