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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, 2020 | Jun. 30, 2019 | Jun. 30, 2020 | Jun. 30, 2019
Segment Reporting Information [Line Items] |  |  |  |
Sales: | $ 1,253 | $ 1,818 | $ 2,887 | $ 3,570
Segment operating profit | 200 | 360 | 539 | 673
Operating Segments |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Sales: | 1,253 | 1,822 | 2,885 | 3,578
Total sales | 1,256 | 1,828 | 2,893 | 3,592
Segment operating profit | 200 | 360 | 539 | 673
Restructuring and other charges (credits) | 42 | 445 | 76 | 461
Provision for depreciation and amortization | 66 | 69 | 131 | 140
Capital expenditures | 30 | 90 | 67 | 206
Inter-segment sales |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Sales: | (3) | (6) | (8) | (14)
Engine Products |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Sales: | 585 | 835 | 1,366 | 1,648
Segment operating profit | 105 | 163 | 270 | 304
Restructuring and other charges (credits) | 22 | 250 | 35 | 253
Provision for depreciation and amortization | 31 | 35 | 61 | 69
Capital expenditures | 14 | 55 | 33 | 126
Engine Products | Operating Segments |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Sales: | 585 | 835 | 1,366 | 1,648
Total sales | 586 | 838 | 1,369 | 1,656
Engine Products | Inter-segment sales |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Sales: | (1) | (3) | (3) | (8)
Fastening Systems |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Sales: | 326 | 399 | 711 | 794
Segment operating profit | 70 | 99 | 166 | 195
Restructuring and other charges (credits) | 24 | 1 | 26 | 6
Provision for depreciation and amortization | 12 | 12 | 24 | 24
Capital expenditures | 7 | 8 | 15 | 17
Fastening Systems | Operating Segments |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Sales: | 326 | 399 | 711 | 794
Total sales | 326 | 399 | 711 | 794
Fastening Systems | Inter-segment sales |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Sales: | 0 | 0 | 0 | 0
Engineered Structures |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Sales: | 229 | 331 | 504 | 625
Segment operating profit | 19 | 25 | 47 | 41
Restructuring and other charges (credits) | (5) | 193 | 12 | 197
Provision for depreciation and amortization | 14 | 14 | 27 | 31
Capital expenditures | 5 | 7 | 8 | 18
Engineered Structures | Operating Segments |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Sales: | 229 | 331 | 504 | 625
Total sales | 231 | 334 | 509 | 631
Engineered Structures | Inter-segment sales |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Sales: | (2) | (3) | (5) | (6)
Forged Wheels |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Sales: | 113 | 257 | 304 | 511
Segment operating profit | 6 | 73 | 56 | 133
Restructuring and other charges (credits) | 1 | 1 | 3 | 5
Provision for depreciation and amortization | 9 | 8 | 19 | 16
Capital expenditures | 4 | 20 | 11 | 45
Forged Wheels | Operating Segments |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Sales: | 113 | 257 | 304 | 511
Total sales | 113 | 257 | 304 | 511
Forged Wheels | Inter-segment sales |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Sales: | $ 0 | $ 0 | $ 0 | $ 0

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