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Organization - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Millions | 1 Months Ended |  |
--- | --- | --- | ---
Apr. 30, 2018 | Jun. 30, 2018 | Dec. 31, 2017
Common stock shares issued | 24,150,000 | 137,465,215 | 65,285,962
Proceeds from issuance of IPO and private placement | $ 631.3 |  |
IPO [Member] |  |  |
Shares issued | 21,000,000 |  |
Shares issued, price per share | $ 22.00 |  |
Private Placement [Member] |  |  |
Shares issued | 4,545,455 |  |
Shares issued, price per share | $ 22.00 |  |
Underwriter [Member] |  |  |
Stock option exercised | 3,150,000 |  |
Foundation Holding LLC [Member] |  |  |
Ownership Percentage By Parent |  | 100.00% |
Ceridian Holding and Ceridian Holding II [Member] | Sponsors [Member] |  |  |
Ownership percentage by sponsors |  | 96.00% |
Ceridian Holding and Ceridian Holding II [Member] | Other Individuals [Member] |  |  |
Minority interest ownership percentage by other |  | 4.00% |

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