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Segment Information - Schedule of Operating Results of Arconic's Reportable Segments (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2019 | Jun. 30, 2018 | Jun. 30, 2019 | Jun. 30, 2018
Segment Reporting Information [Line Items] |  |  |  |
Total sales | $ 3,691 | $ 3,573 | $ 7,232 | $ 7,018
Segment operating profit | 538 | 432 | 985 | 832
Restructuring and other charges | 469 | 10 | 498 | 10
Provision for depreciation and amortization | 129 | 136 | 260 | 270
Operating Segments |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total sales | 3,745 | 3,670 | 7,340 | 7,171
Intersegment sales |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total sales | 55 | 61 | 110 | 118
Third-party sales | Operating Segments |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total sales | 3,690 | 3,609 | 7,230 | 7,053
Engineered Products and Solutions |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Segment operating profit | 286 | 224 | 539 | 433
Restructuring and other charges | 442 | 8 | 456 | 9
Provision for depreciation and amortization | 62 | 65 | 126 | 130
Engineered Products and Solutions | Operating Segments |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total sales | 1,565 | 1,474 | 3,067 | 2,900
Engineered Products and Solutions | Intersegment sales |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total sales | 0 | 0 | 0 | 0
Engineered Products and Solutions | Third-party sales | Operating Segments |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total sales | 1,565 | 1,474 | 3,080 | 3,054
Global Rolled Products |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Segment operating profit | 145 | 111 | 252 | 235
Restructuring and other charges | 2 | 2 | 8 | 1
Provision for depreciation and amortization | 54 | 59 | 108 | 115
Global Rolled Products | Operating Segments |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total sales | 1,632 | 1,634 | 3,190 | 3,172
Global Rolled Products | Intersegment sales |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total sales | 55 | 61 | 110 | 118
Global Rolled Products | Third-party sales | Operating Segments |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total sales | 1,577 | 1,573 | 3,067 | 2,900
Transportation and Construction Solutions |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Segment operating profit | 107 | 97 | 194 | 164
Restructuring and other charges | 25 | 0 | 34 | 0
Provision for depreciation and amortization | 13 | 12 | 26 | 25
Transportation and Construction Solutions | Operating Segments |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total sales | 548 | 562 | 1,083 | 1,099
Transportation and Construction Solutions | Intersegment sales |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total sales | 0 | 0 | 0 | 0
Transportation and Construction Solutions | Third-party sales | Operating Segments |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Total sales | $ 548 | $ 562 | $ 1,083 | $ 1,099

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