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REVENUES (Tables) | 12 Months Ended
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Dec. 31, 2020
Revenue from Contract with Customer [Abstract] |
Revenues from Product Sales and Services [Table Text Block] | The following table represents our Revenues by market:
| (In Millions)
| Year Ended December 31,
| 2020 |  | 2019 |  | 2018
Steelmaking: |  |  |  |  |
Automotive | $ | 2,062 |  |  | $ | — |  |  | $ | — |
Infrastructure and manufacturing | 784 |  |  | — |  |  | — |
Distributors and converters | 696 |  |  | — |  |  | — |
Steel producers 1 | 1,423 |  | 1,990 |  |  | 2,332 |
Total steelmaking | 4,965 |  |  | 1,990 |  |  | 2,332 |
Other Businesses: |  |  |  |  |
Automotive | 329 |  |  | — |  |  | — |
Infrastructure and manufacturing | 34 |  |  | — |  |  | — |
Distributors and converters | 26 |  |  | — |  |  | — |
Total Other Businesses | 389 |  |  | — |  |  | — |
Total revenues | $ | 5,354 |  |  | $ | 1,990 |  |  | $ | 2,332 |
1 Includes Realization of deferred revenue of $35 million for the year ended December 31, 2020.
The following table represents our consolidated Revenues by product line:
| (Dollars In Millions, Sales Volumes in Thousands)
| Year Ended December 31,
| 2020 |  | 2019 |  | 2018
| Revenue |  | Volume 1 |  | Revenue |  | Volume 1 |  | Revenue |  | Volume 1
Steelmaking: |  |  |  |  |  |  |  |  |  |  |
Hot-rolled steel | $ | 386 |  |  | 633 |  |  | $ | — |  |  | — |  |  | $ | — |  |  | — |
Cold-rolled steel | 490 |  |  | 682 |  |  | — |  |  | — |  |  | — |  |  | — |
Coated steel | 1,747 |  |  | 1,911 |  |  | — |  |  | — |  |  | — |  |  | — |
Stainless and electrical steel | 868 |  |  | 416 |  |  | — |  |  | — |  |  | — |  |  | — |
Other steel products | 92 |  |  | 141 |  |  | — |  |  | — |  |  | — |  |  | — |
Iron products 2 | 1,335 |  |  | 11,707 |  |  | 1,990 |  |  | 18,583 |  |  | 2,332 |  |  | 20,563 |
Other | 47 |  |  | N/A |  | — |  |  | — |  |  | — |  |  | — |
Total steelmaking | 4,965 |  |  |  |  | 1,990 |  |  |  |  | 2,332 |  |  |
Other Businesses: |  |  |  |  |  |  |  |  |  |  |
Other | 389 |  |  | N/A |  | — |  |  | N/A |  | — |  |  | N/A
Total revenues | $ | 5,354 |  |  |  |  | $ | 1,990 |  |  |  |  | $ | 2,332 |  |  |
1 Carbon steel products, stainless and electrical steel and plate steel volumes are stated in net tons. Iron product volumes are stated in long tons.
2 Includes Realization of deferred revenue of $35 million for the year ended December 31, 2020.
Deferred Revenue [Table Text Block] | The table below summarizes our deferred revenue balances:
| (In Millions)
| Deferred Revenue (Current) |  | Deferred Revenue (Long-Term)
| 2020 |  | 2019 |  | 2020 |  | 2019
Opening balance as of January 1 | $ | 22 |  |  | $ | 21 |  |  | $ | 26 |  |  | $ | 39 |
Net increase (decrease) | (15) |  |  | 1 |  |  | (26) |  |  | (13) |
Closing balance as of December 31 | $ | 7 |  |  | $ | 22 |  |  | $ | — |  |  | $ | 26 |

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- Definition Tabular disclosure of receivable, contract asset, and contract liability from contract with customer. Includes, but is not limited to, change in contract asset and contract liability. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -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 + Details
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- Definition Tabular disclosure of disaggregation of revenue into categories depicting how nature, amount, timing, and uncertainty of revenue and cash flows are affected by economic factor. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130545-203045 + Details
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