Interim Financial Data by Segment (Tables)

9 Months Ended

Mar. 31, 2020

Segment Reporting [Abstract]

Schedule of Segment Reporting Information, by Segment

Segment Results:

	Revenues
	Three Months Ended				Nine Months Ended
	March 31,				March 31,
	2020		2019		2020		2019
Employer Services	$	2,811.7	$	2,719.1	$	7,790.6	$	7,507.7
PEO Services	1,238.3		1,115.5		3,429.8		3,135.1
Other	(2.2)		(6.4)		(7.4)		(11.9)
	$	4,047.8	$	3,828.2	$	11,213.0	$	10,630.9

	Earnings before Income Taxes
	Three Months Ended				Nine Months Ended
	March 31,				March 31,
	2020		2019		2020		2019
Employer Services	$	1,025.0	$	963.1	$	2,473.4	$	2,335.9
PEO Services	172.6		154.7		488.1		455.7
Other	(120.9)		(133.3)		(310.2)		(419.3)
	$	1,076.7	$	984.5	$	2,651.3	$	2,372.3