Revenue - Schedule of Deferred Costs (Details) - USD ($) $ in Millions	Jun. 30, 2021	Jun. 30, 2020
Capitalized Contract Cost [Line Items]
Deferred contract costs	$ 2,498.2	$ 2,401.6
Deferred costs to obtain a contract
Capitalized Contract Cost [Line Items]
Deferred contract costs	1,055.7	977.8
Deferred costs to fulfill a contract
Capitalized Contract Cost [Line Items]
Deferred contract costs	$ 1,442.5	$ 1,423.8