| Document And Entity Information | Dec. 30, 2021 |
| Cover [Abstract] | |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | Dec. 30, 2021 |
| Entity Registrant Name | Ceridian HCM Holding Inc. |
| Entity Central Index Key | 0001725057 |
| Entity Emerging Growth Company | false |
| Entity File Number | 001-38467 |
| Entity Incorporation, State or Country Code | DE |
| Entity Tax Identification Number | 46-3231686 |
| Entity Address, Address Line One | 3311 East Old Shakopee Road |
| Entity Address, City or Town | Minneapolis |
| Entity Address, State or Province | MN |
| Entity Address, Postal Zip Code | 55425 |
| City Area Code | 952 |
| Local Phone Number | 853-8100 |
| Entity Information, Former Legal or Registered Name | Not Applicable |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Title of 12(b) Security | Common Stock, $0.01 par value |
| Trading Symbol | CDAY |
| Security Exchange Name | NYSE |
