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Restructuring and Other Charges - Additional Information (Detail) |  | 3 Months Ended | 6 Months Ended | 12 Months Ended
--- | --- | --- | --- | ---
Jun. 30, 2017 Employees | Jun. 30, 2017 USD ($) Employees Positions | Jun. 30, 2016 USD ($) Positions | Jun. 30, 2017 USD ($) Employees Positions | Jun. 30, 2016 USD ($) Positions | Dec. 31, 2016 USD ($) Employees
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |
Restructuring and other charges |  | $ 26,000,000 | $ 14,000,000 | $ 99,000,000 | $ 30,000,000 |
Restructuring and other charges after tax and noncontrolling interest |  | $ 17,000,000 | $ 9,000,000 | $ 86,000,000 | $ 20,000,000 |
Number of employees associated with layoff costs | Positions |  | 352 | 540 | 680 | 1,070 |
Reversal of forfeited executive stock compensation |  | $ 13,000,000 |  | $ 13,000,000 |  |
Severance charges |  | 7,000,000 |  | 7,000,000 |  |
Cash payments made against the layoff reserves |  |  |  | 31,000,000 |  | $ 86,000,000
Minimum amount of cash payments expected to be paid beyond the end of the current annual period |  |  |  | 10,000,000 |  |
Maximum amount of cash payments expected to be paid beyond the end of the current annual period |  |  |  | 12,000,000 |  |
Corporate [Member] |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |
Restructuring and other charges |  | $ (5,000,000) | $ (3,000,000) | $ 2,000,000 | $ 3,000,000 |
Number of employees associated with layoff costs | Positions |  | 20 |  | 62 |  |
Engineered Products and Solutions [Member] |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |
Number of employees associated with layoff costs | Positions |  | 129 | 300 | 243 | 800 |
Global Rolled Products [Member] |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |
Number of employees associated with layoff costs | Positions |  | 110 |  | 242 | 30 |
Transportation and Construction Solutions [Member] |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |
Number of employees associated with layoff costs | Positions |  | 93 | 240 | 133 | 240 |
Fusina Italy [Member] |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |
Restructuring and other charges |  |  |  | $ 60,000,000 |  |
Restructuring and other charges after tax and noncontrolling interest |  |  |  | 60,000,000 |  |
Restructuring Programs Layoffs 2015 [Member] |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |
Restructuring and other charges |  | $ 29,000,000 | $ 13,000,000 | 48,000,000 | $ 30,000,000 |
Restructuring and other charges after tax and noncontrolling interest |  | $ 19,000,000 | 8,000,000 | $ 32,000,000 | 19,000,000 |
Number of employees associated with layoff costs | Employees |  |  |  | 1,220 |  | 1,240
Approximate number of employees already laid off | Employees | 1,120 | 1,120 |  | 1,120 |  |
Cash payments made against the layoff reserves |  | $ 1,000,000 |  | $ 4,000,000 |  |
Other Miscellaneous Items [Member] |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |
Restructuring and other charges |  | 4,000,000 | 7,000,000 | 1,000,000 | 7,000,000 |
Restructuring and other charges after tax and noncontrolling interest |  | 3,000,000 | 4,000,000 | 0 | 4,000,000 |
Other Adjustments [Member] |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |
Restructuring and other charges |  | 1,000,000 | 6,000,000 | 2,000,000 | 7,000,000 |
Restructuring and other charges after tax and noncontrolling interest |  | $ 1,000,000 | $ 3,000,000 | $ 2,000,000 | $ 3,000,000 |
Restructuring Programs Layoffs 2017 [Member] |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |
Number of employees associated with layoff costs | Employees | 680 |  |  |  |  |
Approximate number of employees already laid off | Employees | 65 | 65 |  | 65 |  |
Cash payments made against the layoff reserves |  | $ 1,000,000 |  | $ 2,000,000 |  |
Restructuring Programs Layoffs 2016 [Member] |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |
Number of employees associated with layoff costs | Employees | 1,770 |  |  |  |  | 1,800
Approximate number of employees already laid off | Employees | 1,170 | 1,170 |  | 1,170 |  |
Cash payments made against the layoff reserves |  | $ 6,000,000 |  | $ 20,000,000 |  |
Reversal of Forfeited Executive Stock Compensation [Member] |  |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |
Restructuring and other charges |  | 6,000,000 |  | 6,000,000 |  |
Restructuring and other charges after tax and noncontrolling interest |  | $ 4,000,000 |  | $ 4,000,000 |  |

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