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Restructuring and Other Charges - 2014 Actions - Additional Information (Detail)
 3 Months Ended 12 Months Ended
Nov. 01, 2016
USD ($)
Dec. 31, 2015
USD ($)
Dec. 31, 2016
USD ($)
Dec. 31, 2015
USD ($)
Divestiture
Dec. 31, 2014
USD ($)
Employees
Positions
Divestiture
t
Restructuring Cost and Reserve [Line Items]          
Restructuring and other charges   $ 685,000,000 $ 155,000,000 $ 214,000,000 $ 314,000,000
Restructuring and other charges after tax     114,000,000 $ 192,000,000 249,000,000
Number of plant divestitures | Divestiture       3  
Asset impairment charges $ 0   80,000,000   65,000,000
Corporate [Member]          
Restructuring Cost and Reserve [Line Items]          
Restructuring and other charges     23,000,000 $ 39,000,000 $ 24,000,000
Massena East NY and Point Henry and Yennora [Member]          
Restructuring Cost and Reserve [Line Items]          
Reduction in production - result of market conditions | t         200,000,000,000
Divested Businesses [Member]          
Restructuring Cost and Reserve [Line Items]          
Restructuring and other charges         $ 111,000,000
Restructuring and other charges after tax         $ 112,000,000
Number of plant divestitures | Divestiture         3
Divested Businesses [Member] | Global Rolled Products [Member]          
Restructuring Cost and Reserve [Line Items]          
Restructuring and other charges       136,000,000  
Restructuring and other charges after tax       134,000,000  
Restructuring Programs Layoffs 2014 [Member]          
Restructuring Cost and Reserve [Line Items]          
Restructuring and other charges         $ 49,000,000
Restructuring and other charges after tax         $ 28,000,000
Number of employees associated with layoff costs | Positions         1,035
Cash payments made against the layoff reserves     3,000,000 27,000,000 $ 54,000,000
Restructuring Programs Layoffs 2014 [Member] | Corporate [Member]          
Restructuring Cost and Reserve [Line Items]          
Number of employees associated with layoff costs | Positions         110
Restructuring Programs Layoffs 2014 [Member] | Transportation and Construction Solutions [Member]          
Restructuring Cost and Reserve [Line Items]          
Number of employees associated with layoff costs | Positions         410
Restructuring Programs Layoffs 2014 [Member] | Engineered Products and Solutions [Member]          
Restructuring Cost and Reserve [Line Items]          
Number of employees associated with layoff costs | Positions         470
Restructuring Programs Layoffs 2014 [Member] | Global Rolled Products [Member]          
Restructuring Cost and Reserve [Line Items]          
Number of employees associated with layoff costs | Positions         45
Other Miscellaneous Items [Member]          
Restructuring Cost and Reserve [Line Items]          
Restructuring and other charges     11,000,000 7,000,000 $ 10,000,000
Restructuring and other charges after tax     8,000,000 4,000,000 7,000,000
Shut Down and Demolish Actions [Member]          
Restructuring Cost and Reserve [Line Items]          
Restructuring and other charges         154,000,000
Restructuring and other charges after tax         107,000,000
Asset Retirement Obligations [Member]          
Restructuring Cost and Reserve [Line Items]          
Other exit costs         8,000,000
Environmental Remediation [Member]          
Restructuring Cost and Reserve [Line Items]          
Restructuring and other charges     2,000,000   18,000,000
Other exit costs         18,000,000
Supplier and Customer Contract [Member]          
Restructuring Cost and Reserve [Line Items]          
Other exit costs         7,000,000
Other Adjustments [Member]          
Restructuring Cost and Reserve [Line Items]          
Restructuring and other charges     25,000,000 8,000,000 10,000,000
Restructuring and other charges after tax     $ 12,000,000 $ 3,000,000 5,000,000
Shutdown of Two Rolling Mills [Member]          
Restructuring Cost and Reserve [Line Items]          
Restructuring and other charges         $ 56,000,000
Number of employees associated with layoff costs | Employees         470
Accelerated depreciation         $ 58,000,000
Asset impairment charges         7,000,000
Amount of book value of asset write off         33,000,000
Inventory write-down - permanent shutdown and planned demolition of idled structures         13,000,000
Inventory write-down, after-tax         $ 9,000,000