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Credit Losses (Tables) | 9 Months Ended
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Sep. 30, 2020
Credit Loss [Abstract] |
Accounts Receivable, Allowance for Credit Loss | The following table summarizes the activity for the allowance for credit losses for the nine months ended September 30, 2020:
($ in millions) | Trade Receivables Allowance for Credit Losses
January 1, 2020 | $22 |
Current-period provision for credit losses | 41 |
Trade receivables written off as uncollectible, net of recoveries | (15) |
Foreign currency impact | (1) |
September 30, 2020 | $47 |

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- Definition Tabular disclosure of allowance for credit loss on accounts receivable. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=121599337&loc=SL82919249-210447 + Details
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