XML 143 R112.htm IDEA: XBRL DOCUMENT v3.10.0.1

Commitments and Contingencies - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2017
Commitments and Contingencies Disclosure [Abstract]
Increase to the environmental reserve	$ 5.9
Recognized an undiscounted liability	$ 6.2	$ 5.4

X

- Definition

Increase Decrease In Environmental Remediation Reserve

+ References

No definition available.

+ Details

Name:	cday_IncreaseDecreaseInEnvironmentalRemediationReserve
Namespace Prefix:	cday_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Tax receivable agreement undiscounted liability.

+ References

No definition available.

+ Details

Name:	cday_TaxReceivableAgreementUndiscountedLiability
Namespace Prefix:	cday_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- References

No definition available.

+ Details

Name:	us-gaap_CommitmentsAndContingenciesDisclosureAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration