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v3.25.3

Segment Reporting - Segment Revenue and Segment Profit (Loss) (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024
Segment Reporting Information [Line Items] |  |  |  |
Segment revenue | $ 767 | $ 781 | $ 2,272 | $ 2,376
Wages and benefits | 404 | 433 | 1,238 | 1,326
Services and supplies | 194 | 187 | 546 | 568
Rent lease and maintenance expense | 66 | 65 | 199 | 190
Other operating expense | 1 | 2 | 10 | 10
Depreciation and amortization expense | 40 | 35 | 119 | 119
Segment expenses | 705 | 722 | 2,112 | 2,213
Income (Loss) Before Income Taxes | 62 | 59 | 160 | 163
Commercial |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Segment revenue | 367 | 385 | 1,134 | 1,192
Wages and benefits | 247 | 265 | 761 | 810
Services and supplies | 47 | 49 | 155 | 158
Rent lease and maintenance expense | 36 | 37 | 112 | 107
Other operating expense | 0 | 0 | 3 | 2
Depreciation and amortization expense | 20 | 19 | 63 | 67
Segment expenses | 350 | 370 | 1,094 | 1,144
Income (Loss) Before Income Taxes | 17 | 15 | 40 | 48
Government |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Segment revenue | 238 | 255 | 692 | 758
Wages and benefits | 96 | 107 | 290 | 322
Services and supplies | 63 | 72 | 188 | 219
Rent lease and maintenance expense | 18 | 16 | 51 | 49
Other operating expense | 0 | 0 | 4 | 4
Depreciation and amortization expense | 13 | 10 | 34 | 34
Segment expenses | 190 | 205 | 567 | 628
Income (Loss) Before Income Taxes | 48 | 50 | 125 | 130
Transportation |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Segment revenue | 162 | 141 | 446 | 426
Wages and benefits | 61 | 61 | 187 | 194
Services and supplies | 84 | 66 | 203 | 191
Rent lease and maintenance expense | 12 | 12 | 36 | 34
Other operating expense | 1 | 2 | 3 | 4
Depreciation and amortization expense | 7 | 6 | 22 | 18
Segment expenses | 165 | 147 | 451 | 441
Income (Loss) Before Income Taxes | $ (3) | $ (6) | $ (5) | $ (15)

X
- Definition Segment Expense + References No definition available. + Details
Name: | cndt_SegmentExpense
Namespace Prefix: | cndt_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Segment Expense, Depreciation And Amortization Expense + References No definition available. + Details
Name: | cndt_SegmentExpenseDepreciationAndAmortizationExpense
Namespace Prefix: | cndt_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Segment Expense, Other Operating Expense + References No definition available. + Details
Name: | cndt_SegmentExpenseOtherOperatingExpense
Namespace Prefix: | cndt_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Segment Expense, Rent And Maintenance Expense + References No definition available. + Details
Name: | cndt_SegmentExpenseRentAndMaintenanceExpense
Namespace Prefix: | cndt_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Segment Expense, Services And Supplies + References No definition available. + Details
Name: | cndt_SegmentExpenseServicesAndSupplies
Namespace Prefix: | cndt_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Segment Expense, Wages And Benefits + References No definition available. + Details
Name: | cndt_SegmentExpenseWagesAndBenefits
Namespace Prefix: | cndt_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of profit or loss recognized by the reportable segment. + References No definition available. + Details
Name: | cndt_SegmentProfitLoss
Namespace Prefix: | cndt_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Segment Revenue From Contract With Customer, Excluding Assessed Tax + References No definition available. + Details
Name: | cndt_SegmentRevenueFromContractWithCustomerExcludingAssessedTax
Namespace Prefix: | cndt_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_SegmentReportingInformationLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=cndt_CommercialIndustriesSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=cndt_GovernmentServicesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=cndt_TransportationServicesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |