v3.20.2

Revenue from Contracts with Customers | 6 Months Ended
--- | ---
Jun. 30, 2020
Revenue from Contract with Customer [Abstract] |
Revenue from Contracts with Customers | Revenue from Contracts with Customers​ The following table disaggregates revenue by major end market served.
Second quarter ended June 30, |  | Rolled Products |  | Building and Construction Systems |  | Extrusions |  | Total
2020 |  | ​ |  | ​ |  | ​ |  | ​
Ground Transportation |  | $ | 250 |  |  | $ | — |  |  | $ | 7 |  |  | $ | 257 |
Building and Construction |  | 33 |  |  | 230 |  |  | — |  |  | 263 |
Aerospace |  | 173 |  |  | — |  |  | 64 |  |  | 237 |
Industrial Products and Other |  | 229 |  |  | — |  |  | 10 |  |  | 239 |
Packaging |  | 195 |  |  | — |  |  | — |  |  | 195 |
Total end-market revenue |  | $ | 880 |  |  | $ | 230 |  |  | $ | 81 |  |  | $ | 1,191 |
2019 |  | ​ |  | ​ |  | ​ |  | ​
Ground Transportation |  | $ | 635 |  |  | $ | — |  |  | $ | 31 |  |  | $ | 666 |
Building and Construction |  | 53 |  |  | 292 |  |  | — |  |  | 345 |
Aerospace |  | 265 |  |  | — |  |  | 79 |  |  | 344 |
Industrial Products and Other |  | 292 |  |  | — |  |  | 35 |  |  | 327 |
Packaging |  | 241 |  |  | — |  |  | — |  |  | 241 |
Total end-market revenue |  | $ | 1,486 |  |  | $ | 292 |  |  | $ | 145 |  |  | $ | 1,923 |
Six months ended June 30, | ​ | Rolled Products |  | Building and Construction Systems |  | Extrusions |  | Total
2020 | ​ | ​ |  | ​ |  | ​ |  | ​
Ground Transportation | ​ | $ | 749 |  |  | $ | — |  |  | $ | 37 |  |  | $ | 786 |
Building and Construction | ​ | 68 |  |  | 486 |  |  | — |  |  | 554 |
Aerospace | ​ | 398 |  |  | — |  |  | 139 |  |  | 537 |
Industrial Products and Other | ​ | 514 |  |  | — |  |  | 38 |  |  | 552 |
Packaging | ​ | 373 |  |  | — |  |  | — |  |  | 373 |
Total end-market revenue | ​ | $ | 2,102 |  |  | $ | 486 |  |  | $ | 214 |  |  | $ | 2,802 |
2019 |  | ​ |  | ​ |  | ​ |  | ​
Ground Transportation |  | $ | 1,286 |  |  | $ | — |  |  | $ | 62 |  |  | $ | 1,348 |
Building and Construction |  | 102 |  |  | 573 |  |  | — |  |  | 675 |
Aerospace |  | 511 |  |  | — |  |  | 153 |  |  | 664 |
Industrial Products and Other |  | 547 |  |  | — |  |  | 79 |  |  | 626 |
Packaging |  | 451 |  |  | — |  |  | — |  |  | 451 |
Total end-market revenue |  | $ | 2,897 |  |  | $ | 573 |  |  | $ | 294 |  |  | $ | 3,764 |

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

X
- Definition The entire disclosure of revenue from contract with customer to transfer good or service and to transfer nonfinancial asset. Includes, but is not limited to, disaggregation of revenue, credit loss recognized from contract with customer, judgment and change in judgment related to contract with customer, and asset recognized from cost incurred to obtain or fulfill contract with customer. Excludes insurance and lease contracts. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -URI http://asc.fasb.org/topic&trid=49130388 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130551-203045 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 13 -Subparagraph (b)(2) -URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130556-203045 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 12 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130554-203045 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 9 -URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130550-203045 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 12 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130554-203045 Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 12 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130554-203045 Reference 8: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 12 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130554-203045 Reference 9: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130558-203045 Reference 10: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 12 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130554-203045 + Details
Name: | us-gaap_RevenueFromContractWithCustomerTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration