Accumulated Other Comprehensive Income (Loss) (Tables)

12 Months Ended

Dec. 31, 2019

Equity [Abstract]

Components of Accumulated Other Comprehensive Income (Loss)

The components of accumulated other comprehensive income (loss) were as follows:

	Foreign Currency Translation Adjustment			Unrealized Gain (Loss) from Invested Customer Trust Funds			Pension Liability Adjustment			Total
	(Dollars in millions)
Balance as of December 31, 2017	$	(159.5	)	$	(9.0	)	$	(142.5	)	$	(311.0	)
Other comprehensive loss before income    taxes and reclassifications		(48.7	)		(10.5	)		(19.3	)		(78.5	)
Income tax benefit		—			1.2			—			1.2
Reclassifications to earnings		—			—			11.7			11.7
Other comprehensive income (loss) attributable to    Ceridian		(48.7	)		(9.3	)		(7.6	)		(65.6	)
LifeWorks Disposition		0.7			—			—			0.7
Balance as of December 31, 2018		(207.5	)		(18.3	)		(150.1	)		(375.9	)
Other comprehensive loss before income    taxes and reclassifications		29.1			37.7			(0.3	)		66.5
Income tax expense		—			(9.6	)		(2.4	)		(12.0	)
Reclassifications to earnings		—			—			10.1			10.1
Other comprehensive income		29.1			28.1			7.4			64.6
Cumulative-effect adjustment related to the adoption    of ASU 2018-02 (Please refer to Note 2)		—			0.4			(27.5	)		(27.1	)
Balance as of December 31, 2019	$	(178.4	)	$	10.2		$	(170.2	)	$	(338.4	)