v3.20.1

Segment and Related Information​ (Tables) | 3 Months Ended
--- | ---
Mar. 31, 2020
Segment Reporting [Abstract] |
Reconciliation of Operating Profit (Loss) from Segments | The operating results of Arconic Corporation’s reportable segments were as follows (differences between segment totals and Arconic Corporation’s combined totals are in Corporate):
First quarter ended March 31, | ​ | Rolled Products |  | Extrusions |  | Building and Construction Systems |  | Total
2020 | ​ | ​ |  |  | ​ |  |  | ​ |  |  | ​ |
Sales: | ​ | ​ |  |  | ​ |  |  | ​ |  |  | ​ |
Third-party sales-unrelated party | ​ | $ | 1,201 |  |  | $ | 119 |  |  | $ | 256 |  |  | $ | 1,576 |
Third-party sales-related party | ​ | 21 |  |  | 14 |  |  | — |  |  | 35 |
Intersegment sales | ​ | 7 |  |  | — |  |  | — |  |  | 7 |
Total sales | ​ | $ | 1,229 |  |  | $ | 133 |  |  | $ | 256 |  |  | $ | 1,618 |
Segment operating profit | ​ | $ | 125 |  |  | $ | 6 |  |  | $ | 28 |  |  | $ | 159 |
Supplemental information: | ​ |  |  |  |  |  |  |
Provision for depreciation and amortization | ​ | $ | 46 |  |  | $ | 6 |  |  | $ | 4 |  |  | $ | 56 |
Restructuring and other charges (E) | ​ | 9 |  |  | (31 | ) |  | 1 |  |  | (21 | )
2019 | ​ |  |  |  |  |  |  |
Sales: | ​ |  |  |  |  |  |  |
Third-party sales-unrelated party | ​ | $ | 1,376 |  |  | $ | 132 |  |  | $ | 281 |  |  | $ | 1,789 |
Third-party sales-related party | ​ | 35 |  |  | 17 |  |  | — |  |  | 52 |
Intersegment sales | ​ | 7 |  |  | — |  |  | — |  |  | 7 |
Total sales | ​ | $ | 1,418 |  |  | $ | 149 |  |  | $ | 281 |  |  | $ | 1,848 |
Segment operating profit | ​ | $ | 91 |  |  | $ | (4 | ) |  | $ | 22 |  |  | $ | 109 |
Supplemental information: | ​ |  |  |  |  |  |  |
Provision for depreciation and amortization | ​ | $ | 47 |  |  | $ | 7 |  |  | $ | 5 |  |  | $ | 59 |
Restructuring and other charges (E) | ​ | 6 |  |  | — |  |  | 5 |  |  | 11 |
The following table reconciles total segment operating profit to combined income before income taxes:
First quarter ended March 31, | ​ | 2020 | ​ | 2019
Total segment operating profit | ​ | $ | 159 |  |  | $ | 109 |
Unallocated amounts: | ​ |  |  |  |  |
Cost allocations (A) | ​ | (26 | ) |  | (34 | )
Restructuring and other charges (E) | ​ | 19 |  |  | (2 | )
Other | ​ | — |  |  | 7 |
Combined operating income | ​ | 152 |  |  | 80 |
Interest expense | ​ | (35 | ) |  | (28 | )
Other (expenses) income, net (F) | ​ | (26 | ) |  | 14 |
Combined income before income taxes | ​ | $ | 91 |  |  | $ | 66 |

X
- Definition Tabular disclosure of the reconciliation of profit (loss) from reportable segments to the consolidated income (loss) before income tax expense (benefit) and discontinued operations. Includes, but is not limited to, reconciliation after income tax if income tax is allocated to the reportable segment. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 31 -URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8924-108599 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 30 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8906-108599 + Details
Name: | us-gaap_ReconciliationOfOperatingProfitLossFromSegmentsToConsolidatedTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_SegmentReportingAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration