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Document and Entity Information
9 Months Ended
Sep. 30, 2018
Document And Entity Information [Abstract]  
Document Type S-1
Amendment Flag false
Document Period End Date Sep. 30, 2018
Trading Symbol CDAY
Entity Registrant Name Ceridian HCM Holding Inc.
Entity Central Index Key 0001725057
Entity Filer Category Non-accelerated Filer
Entity Small Business false
Entity Emerging Growth Company true
Entity Ex Transition Period false