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Accounts Receivables, Net Accounts Receivable Sales (Policies) | 12 Months Ended
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Dec. 31, 2017
Accounts Receivable [Abstract] |
Receivables Held-for-sale, Determination, Policy [Policy Text Block] | into supply chain financing programs from time to time to sell certain accounts receivable without recourse to third-party financial institutions. Sales of accounts receivable are reflected as a reduction of accounts receivable on the Consolidated Balance Sheets and the proceeds are included in cash flow from operating activities in the Consolidated Statements of Cash Flows.

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- Definition Accounts Receivable [Abstract] + References No definition available. + Details
Name: | cndt_AccountsReceivableAbstract
Namespace Prefix: | cndt_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Disclosure of accounting policy for how the entity determines which receivables are initially accounted for as held for sale or are later transferred to the held for sale classification. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=84158767&loc=d3e18780-107790 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=84173941&loc=d3e5033-111524 + Details
Name: | us-gaap_ReceivablesHeldForSaleDeterminationPolicy
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration