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v3.20.1

Restructuring and Other Charges - Activity and Reserve Balances for Restructuring Charges (Details) - USD ($) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2020 | Mar. 31, 2019 | Dec. 31, 2019
Restructuring Reserve [Roll Forward] |  |  |
Restructuring reserve beginning balance | $ 34 | $ 25 | $ 25
Cash payments | (7) |  | (79)
Restructuring charges | 21 |  | 630
Other | (2) |  | (542)
Restructuring reserve ending balance | 46 |  | 34
Gain on sale of assets | (2) | (2) |
Restructuring charges | 21 | 12 |
Texarkana, Texas Rolling Mill And Cast House |  |  |
Restructuring Reserve [Roll Forward] |  |  |
Gain on sale of assets |  |  | 20
Extrusions Busines |  |  |
Restructuring Reserve [Roll Forward] |  |  |
Gain (loss) on sale of business | 27 |  |
Layoff costs |  |  |
Restructuring Reserve [Roll Forward] |  |  |
Restructuring reserve beginning balance | 31 | 10 | 10
Cash payments | (7) |  | (74)
Restructuring charges | 20 |  | 56
Other | 0 |  | 39
Restructuring reserve ending balance | 44 |  | 31
Restructuring charges | 22 | 65 |
Other exit costs |  |  |
Restructuring Reserve [Roll Forward] |  |  |
Restructuring reserve beginning balance | 3 | 15 | 15
Cash payments | 0 |  | (5)
Restructuring charges | 1 |  | 574
Other | (2) |  | (581)
Restructuring reserve ending balance | 2 |  | 3
Restructuring charges | 3 |  |
Elimination Of Life Insurance Benefits |  |  |
Restructuring Reserve [Roll Forward] |  |  |
Other |  |  | 58
Restructuring charges |  | (58) |
Other, Pension Settlement Cost |  |  |
Restructuring Reserve [Roll Forward] |  |  |
Restructuring charges |  |  | 9
Employee Severance, Reversal Of Prior Restructuring |  |  |
Restructuring Reserve [Roll Forward] |  |  |
Other |  |  | 10
Impairment Of Disks |  |  |
Restructuring Reserve [Roll Forward] |  |  |
Restructuring charges |  |  | 428
Asset Impairment associated with the sale of business |  |  |
Restructuring Reserve [Roll Forward] |  |  |
Restructuring charges |  |  | 112
Other Exit Costs, Impairment Of Intangibles And Property Plant and Equipment |  |  |
Restructuring Reserve [Roll Forward] |  |  |
Restructuring charges |  |  | 25
Other Exit Cost Lease Termination Loss |  |  |
Restructuring Reserve [Roll Forward] |  |  |
Restructuring charges |  |  | 12
Accelerated Depreciation |  |  |
Restructuring Reserve [Roll Forward] |  |  |
Restructuring charges |  |  | 9
Impairment Of A Cost Investment |  |  |
Restructuring Reserve [Roll Forward] |  |  |
Restructuring charges |  |  | 5
Other Miscellaneous Charges |  |  |
Restructuring Reserve [Roll Forward] |  |  |
Restructuring charges |  |  | 1
Restructuring charges |  | $ 1 |
Other Exit Costs, Reclassification Of Lease Exit Costs |  |  |
Restructuring Reserve [Roll Forward] |  |  |
Restructuring charges |  |  | $ 9
Sale Of Assets |  |  |
Restructuring Reserve [Roll Forward] |  |  |
Gain on sale of assets | 2 |  |
Impairments Of Assets Associated With Agreement To Sell Aerospace Components Business |  |  |
Restructuring Reserve [Roll Forward] |  |  |
Restructuring charges | 12 |  |
UK Forgings |  |  |
Restructuring Reserve [Roll Forward] |  |  |
Restructuring charges | 6 |  |
Sale Of Company's Brazilian Rolling Mill Operations |  |  |
Restructuring Reserve [Roll Forward] |  |  |
Restructuring charges | $ 6 |  |

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