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Accounts Receivables, Net (Tables) | 12 Months Ended
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Dec. 31, 2017
Receivables [Abstract] |
Schedule Of Accounts Receivable Sales | Accounts receivable sales were as follows:
|  | Year Ended December 31,
(in millions) |  | 2018 |  | 2017 |  | 2016
Accounts receivable sales |  | $ | 119 |  |  | $ | 94 |  |  | $ | 259 |

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- Definition Tabular disclosure of Accounts Receivables factored in the period. + References No definition available. + Details
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Namespace Prefix: | cndt_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

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