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Receivables, net (Tables) | 12 Months Ended
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Dec. 31, 2019
Receivables [Abstract] |
Rollforward of Allowance for Doubtful Accounts | The allowance for doubtful accounts reflects the Company’s best estimate of probable losses inherent in the accounts receivable balance. Activity in the allowance for doubtful accounts was as follows (in millions):
|  | December 31, |
|  | 2019 |  |  | 2018 |  |  | 2017 |
Allowance for doubtful accounts |  |  |  |  |  |  |  |  |  |  |  |
Beginning balance |  | $ | 27 |  |  | $ | 29 |  |  | $ | 34 |
Additions (deductions) charged to expenses |  |  | (2 | ) |  |  | 2 |  |  |  | 3 |
Charge-offs and other |  |  | (9 | ) |  |  | (4 | ) |  |  | (8 | )
Ending balance |  | $ | 16 |  |  | $ | 27 |  |  | $ | 29 |

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- Definition Tabular disclosure of financing receivable on nonaccrual status. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=118936363&loc=d3e5111-111524 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 16 -URI http://asc.fasb.org/extlink&oid=119407570&loc=SL82919258-210447 + Details
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