Goodwill and Intangible Assets, Net (Tables)

12 Months Ended

Jun. 30, 2026

Intangible Asset, Goodwill and Other [Abstract]

Schedule of Changes in Goodwill

Changes in goodwill for the years ended June 30, 2026 and 2025 are as follows:

	Employer Services		PEO Services		Total
Balance at June 30, 2024	$	2,348.8	$	4.8	$	2,353.6
Additions and other adjustments	887.0		—		887.0
Currency translation adjustments	32.9		—		32.9
Balance at June 30, 2025	$	3,268.7	$	4.8	$	3,273.5
Additions and other adjustments	21.3		—		21.3
Currency translation adjustments	(10.4)		—		(10.4)
Balance at June 30, 2026	$	3,279.6	$	4.8	$	3,284.4

Schedule of Finite-Lived Intangible Assets

The estimated fair value of intangible assets and related useful lives as included in the purchase price allocation include:

	Estimated Fair Value		Estimated Useful Life (in years)
Technology	$	115.0	7
Customer/Partner relationships	$	170.0	8
Tradename	$	7.0	4

Components of intangible assets, net, are as follows:

June 30,	2026		2025
Intangible assets:
Software and software licenses	$	4,369.7	$	4,103.6
Customer contracts and lists	1,487.0		1,429.4
Other intangibles	250.1		249.8
	6,106.8		5,782.8
Less accumulated amortization:
Software and software licenses	(3,023.4)		(2,830.3)
Customer contracts and lists	(1,184.4)		(1,105.6)
Other intangibles	(245.7)		(243.9)
	(4,453.5)		(4,179.8)
Intangible assets, net	$	1,653.3	$	1,603.0

Intangible Asset, Finite-Lived, and Capitalized Cost, Software to be Sold, Leased, or Marketed, Estimated Amortization Expense

Estimated future amortization expenses of the Company's existing intangible assets are as follows:

	Amount
Twelve months ending June 30, 2027	$	424.7
Twelve months ending June 30, 2028	$	298.7
Twelve months ending June 30, 2029	$	261.1
Twelve months ending June 30, 2030	$	215.7
Twelve months ending June 30, 2031	$	176.0