Organization	3 Months Ended
Mar. 31, 2019
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Organization	1. Organization Ceridian HCM Holding Inc. and its subsidiaries (also referred to in this report as “Ceridian,” “we,” “our,” and “us”) offer a broad range of services and software designed to help employers more effectively manage employment processes, such as payroll, payroll-related tax filing, human resource information systems, employee self-service, time and labor management, employee assistance programs, and recruitment and applicant screening. Our technology-based services are typically provided through long-term customer relationships that result in a high level of recurring revenue. Our operations are primarily located in the United States and Canada. On March 22, 2019, we completed a secondary offering, in which certain of our stockholders (the “Selling Stockholders”) sold 13,000,000 shares of common stock, in an underwritten public offering at $50.50 per share. The Selling Stockholders granted the underwriters a 30-day option to purchase an additional 1,950,000 shares of common stock at the offering price, which was partially exercised on April 3, 2019 for 1,222,142 shares. A total of 14,222,142 shares of common stock were sold by the Selling Stockholders, with all proceeds going to the Selling Stockholders. We incurred expenses of $0.9 during the three months ended March 31, 2019, related to the secondary offering within selling, general and administrative expense.

Organization

3 Months Ended

Mar. 31, 2019

Organization Consolidation And Presentation Of Financial Statements [Abstract]

1. Organization

Ceridian HCM Holding Inc. and its subsidiaries (also referred to in this report as “Ceridian,” “we,” “our,” and “us”) offer a broad range of services and software designed to help employers more effectively manage employment processes, such as payroll, payroll-related tax filing, human resource information systems, employee self-service, time and labor management, employee assistance programs, and recruitment and applicant screening. Our technology-based services are typically provided through long-term customer relationships that result in a high level of recurring revenue. Our operations are primarily located in the United States and Canada.

On March 22, 2019, we completed a secondary offering, in which certain of our stockholders (the “Selling Stockholders”) sold 13,000,000 shares of common stock, in an underwritten public offering at $50.50 per share. The Selling Stockholders granted the underwriters a 30-day option to purchase an additional 1,950,000 shares of common stock at the offering price, which was partially exercised on April 3, 2019 for 1,222,142 shares. A total of 14,222,142 shares of common stock were sold by the Selling Stockholders, with all proceeds going to the Selling Stockholders. We incurred expenses of $0.9 during the three months ended March 31, 2019, related to the secondary offering within selling, general and administrative expense.