Financial Data By Segment And Geographic Area (Tables)

12 Months Ended

Jun. 30, 2021

Segment Reporting [Abstract]

Schedule of Segment Reporting Information, by Segment

	Employer Services		PEO Services		Other		Total
Year ended June 30, 2021
Revenues	$	10,195.2	$	4,818.3	$	(8.1)	$	15,005.4
Earnings before income taxes	3,052.1		718.8		(409.7)		3,361.2
Assets	50,279.3		1,543.4		(3,050.2)		48,772.5
Capital expenditures	116.7		—		61.6		178.3
Depreciation and amortization	421.7		7.4		81.6		510.7
Year ended June 30, 2020
Revenues	$	10,086.6	$	4,511.5	$	(8.3)	$	14,589.8
Earnings before income taxes	3,058.2		609.3		(484.9)		3,182.6
Assets	37,071.7		1,443.2		650.6		39,165.5
Capital expenditures	115.7		—		52.6		168.3
Depreciation and amortization	388.0		3.4		88.6		480.0
Year ended June 30, 2019
Revenues	$	9,942.8	$	4,177.7	$	(10.3)	$	14,110.2
Earnings before income taxes	2,954.2		613.3		(561.9)		3,005.6
Assets	34,606.3		1,584.1		5,697.3		41,887.7
Capital expenditures	98.2		—		64.5		162.7
Depreciation and amortization	321.0		3.5		84.5		409.0

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

	United States		Europe		Canada		Other		Total
Year ended June 30, 2021
Revenues	$	13,081.7	$	1,307.9	$	337.3	$	278.5	$	15,005.4
Assets	$	42,137.1	$	2,425.1	$	3,360.5	$	849.8	$	48,772.5
Year ended June 30, 2020
Revenues	$	12,740.1	$	1,236.3	$	329.8	$	283.6	$	14,589.8
Assets	$	33,891.0	$	2,162.7	$	2,435.3	$	676.5	$	39,165.5
Year ended June 30, 2019
Revenues	$	12,262.6	$	1,236.8	$	326.6	$	284.2	$	14,110.2
Assets	$	36,508.3	$	2,807.9	$	1,950.5	$	621.0	$	41,887.7