Revenue - Summary of Deferred Costs (Details) - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2024
Capitalized Contract Cost [Line Items]
Deferred contract costs	$ 3,244.1	$ 3,154.1
Amortization of deferred contract costs	1,200.5	1,145.3	$ 1,067.6
Deferred costs to obtain a contract
Capitalized Contract Cost [Line Items]
Deferred contract costs	1,500.4	1,438.6
Deferred costs to fulfill a contract
Capitalized Contract Cost [Line Items]
Deferred contract costs	$ 1,743.7	$ 1,715.5