Interim Financial Data by Segment (Tables)

9 Months Ended

Mar. 31, 2024

Segment Reporting [Abstract]

Schedule of Segment Reporting Information, by Segment

Segment Results:

	Revenues
	Three Months Ended				Nine Months Ended
	March 31,				March 31,
	2024		2023		2024		2023
Employer Services	$	3,590.7	$	3,339.1	$	9,762.3	$	9,021.3
PEO Services	1,665.6		1,592.0		4,681.2		4,524.7
Other	(2.5)		(3.3)		(9.4)		(11.6)
	$	5,253.8	$	4,927.8	$	14,434.1	$	13,534.4

  

	Earnings before Income Taxes
	Three Months Ended				Nine Months Ended
	March 31,				March 31,
	2024		2023		2024		2023
Employer Services	$	1,421.7	$	1,244.5	$	3,492.1	$	3,042.6
PEO Services	235.9		261.0		713.8		747.0
Other	(111.3)		(141.5)		(422.9)		(357.6)
	$	1,546.3	$	1,364.0	$	3,783.0	$	3,432.0