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Revenue from Contracts With Customers (Tables) | 3 Months Ended
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Mar. 31, 2020
Revenue from Contract with Customer |
Schedule of the disaggregation of revenue by timing of transfer of control | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Three Months Ended March 31, 2020 | ​ | Three Months Ended March 31, 2019
($ in millions) | ​ | Point in Time | ​ | Over Time | ​ | Total |  | Point in Time | ​ | Over Time | ​ | Total
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Total net sales | ​ | $ | 503 | ​ | $ | 2,282 | ​ | $ | 2,785 | ​ | $ | 557 | ​ | $ | 2,228 | ​ | $ | 2,785
Schedule of balances of contract liabilities | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Contract | ​ | Contract
​ | ​ | Liabilities | ​ | Liabilities
($ in millions) |  | (Current) | ​ | (Noncurrent)
​ | ​ | ​ | ​ | ​ | ​ | ​
Balance at December 31, 2019 | ​ | ​ | 87 | ​ | ​ | 9
Increase (decrease) | ​ | ​ | 1 | ​ | ​ | (1)
Balance at March 31, 2020 | ​ | $ | 88 | ​ | $ | 8
​ | ​ | ​ | ​ | ​ | ​ | ​
Schedule of transaction price allocated to remaining performance obligations | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
($ in millions) |  | Next Twelve Months | ​ | Thereafter | ​ | Total
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Sales expected to be recognized on multi-year contracts in place as of March 31, 2020 | ​ | $ | 1,371 | ​ | $ | 909 | ​ | $ | 2,280

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- Definition Tabular disclosure of contract balances and changes in contract balances. + 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=118956577&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=118956577&loc=SL49130545-203045 + Details
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- Definition Tabular disclosure of expected timing for satisfying remaining performance obligation. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 13 -Subparagraph (b)(1) -URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130556-203045 + Details
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