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Segment Information - Schedule of Operating Results of Arconic's Reportable Segments (Details) - USD ($) $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2019 | Mar. 31, 2018
Segment Reporting Information [Line Items] |  |
Total sales | $ 3,541 | $ 3,445
Segment operating profit | 447 | 400
Restructuring and other charges | 29 | 0
Provision for depreciation and amortization | 131 | 134
Operating Segments |  |
Segment Reporting Information [Line Items] |  |
Total sales | 3,595 | 3,501
Intersegment sales |  |
Segment Reporting Information [Line Items] |  |
Total sales | 55 | 57
Third-party sales | Operating Segments |  |
Segment Reporting Information [Line Items] |  |
Total sales | 3,540 | 3,444
Engineered Products and Solutions |  |
Segment Reporting Information [Line Items] |  |
Segment operating profit | 253 | 209
Restructuring and other charges | 14 | 1
Provision for depreciation and amortization | 64 | 65
Engineered Products and Solutions | Operating Segments |  |
Segment Reporting Information [Line Items] |  |
Total sales | 1,502 | 1,426
Engineered Products and Solutions | Intersegment sales |  |
Segment Reporting Information [Line Items] |  |
Total sales | 0 | 0
Engineered Products and Solutions | Third-party sales | Operating Segments |  |
Segment Reporting Information [Line Items] |  |
Total sales | 1,502 | 1,426
Global Rolled Products |  |
Segment Reporting Information [Line Items] |  |
Segment operating profit | 107 | 124
Restructuring and other charges | 6 | (1)
Provision for depreciation and amortization | 54 | 56
Global Rolled Products | Operating Segments |  |
Segment Reporting Information [Line Items] |  |
Total sales | 1,558 | 1,538
Global Rolled Products | Intersegment sales |  |
Segment Reporting Information [Line Items] |  |
Total sales | 55 | 57
Global Rolled Products | Third-party sales | Operating Segments |  |
Segment Reporting Information [Line Items] |  |
Total sales | 1,503 | 1,481
Transportation and Construction Solutions |  |
Segment Reporting Information [Line Items] |  |
Segment operating profit | 87 | 67
Restructuring and other charges | 9 | 0
Provision for depreciation and amortization | 13 | 13
Transportation and Construction Solutions | Operating Segments |  |
Segment Reporting Information [Line Items] |  |
Total sales | 535 | 537
Transportation and Construction Solutions | Intersegment sales |  |
Segment Reporting Information [Line Items] |  |
Total sales | 0 | 0
Transportation and Construction Solutions | Third-party sales | Operating Segments |  |
Segment Reporting Information [Line Items] |  |
Total sales | $ 535 | $ 537

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