Other Non-Current Assets - Schedule of Other Non-Current Assets (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2021	Dec. 31, 2020	Jun. 30, 2021
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
ROU assets	$ 244.4		$ 244.4		$ 262.0
Long-term investments	215.0		215.0		194.0
Deferred sales commissions costs	105.8		105.8		108.6
Contract assets	96.7		96.7		89.8
Long-term broker fees	43.2		43.2		48.7
Deferred data center costs	21.1		21.1		24.3
Other	41.8		41.8		35.0
Total	768.1		768.1		$ 762.5
Amortization of deferred sales commissions and set-up costs	$ 27.3	$ 21.0	$ 50.6	$ 39.7