Financial Data By Segment And Geographic Area (Tables)

12 Months Ended

Jun. 30, 2024

Segment Reporting [Abstract]

Schedule of Segment Reporting Information, by Segment

	Employer Services		PEO Services		Other		Total
Year ended June 30, 2024
Revenues	$	12,980.8	$	6,233.6	$	(11.8)	$	19,202.6
Earnings before income taxes	4,555.5		921.5		(604.7)		4,872.3
Capital expenditures	157.3		—		54.4		211.7
Depreciation and amortization	486.6		6.8		68.5		561.9
Year ended June 30, 2023
Revenues	$	12,042.6	$	5,984.2	$	(14.6)	$	18,012.2
Earnings before income taxes	3,974.2		977.3		(513.9)		4,437.6
Capital expenditures	161.4		—		44.6		206.0
Depreciation and amortization	467.6		7.5		74.2		549.3
Year ended June 30, 2022
Revenues	$	10,967.7	$	5,545.7	$	(15.1)	$	16,498.3
Earnings before income taxes	3,406.3		871.2		(473.4)		3,804.1
Capital expenditures	125.4		—		51.7		177.1
Depreciation and amortization	428.5		8.3		78.3		515.1

Schedule of Revenue from External Customers and Long-Lived Assets, by Geographical Areas

	United States		Europe		Canada		Other		Total
Year ended June 30, 2024
Revenues	$	16,934.2	$	1,451.4	$	473.7	$	343.3	$	19,202.6
Assets	$	47,989.9	$	2,800.8	$	2,796.6	$	775.4	$	54,362.7
Year ended June 30, 2023
Revenues	$	15,950.9	$	1,309.2	$	427.5	$	324.6	$	18,012.2
Assets	$	44,565.9	$	2,602.2	$	3,022.0	$	780.9	$	50,971.0
Year ended June 30, 2022
Revenues	$	14,503.3	$	1,304.2	$	389.3	$	301.5	$	16,498.3
Assets	$	56,856.2	$	2,452.9	$	2,987.9	$	771.2	$	63,068.2