Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill.

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Percentage of voting equity interests acquired at the acquisition date in the business combination.

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The amount of impairment loss recognized in the period resulting from the write-down of the carrying amount of an intangible asset (excluding goodwill) to fair value.

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Nonrecurring impairment charges related to the write-off of production-related equipment and inventory. This tag is used when an Entity charges this cost to cost of goods sold.

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The charge against earnings resulting from the aggregate write down of tangible assets from their carrying value to their fair value.

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Pension Corridor Percentage

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Significant Accounting Policies [Line Items]

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Nature of Business and Significant Accounting Policies - Additional Information (Detail) - USD ($) $ in Millions	1 Months Ended		3 Months Ended		12 Months Ended
	Dec. 31, 2021	Oct. 31, 2021	Jun. 30, 2021	Mar. 31, 2020	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Oct. 31, 2019
Significant Accounting Policies [Line Items]
Percentage of LIFO (last in first out) inventory to total inventory	46.00%				46.00%	59.00%
Asset impairment charges (Note 1)			$ 56		$ 273	$ 263	$ 0
Portion of salaried employees that receive pension benefits through a defined contribution pension plan					three-quarters
Pension corridor percentage					10.00%
Welded Tubular Asset Group
Significant Accounting Policies [Line Items]
Asset impairment charges (Note 1)				$ 263
Tangible Asset Impairment Charges				196
Impairment of Intangible Assets (Excluding Goodwill)				$ 67
Steel Casting and Hot Strip Mill Related Fixed Assets
Significant Accounting Policies [Line Items]
Write-off of assets	$ 128
Equipment Related to Steel Production for Petroleum Conveying Pipe
Significant Accounting Policies [Line Items]
Write-off of assets		$ 88
Big River Steel
Significant Accounting Policies [Line Items]
Ownership interest								49.90%