Other Non-Current Assets - Schedule of Other Non-Current Assets (Details) - USD ($) $ in Millions	Jun. 30, 2020	Jun. 30, 2019	Jul. 01, 2018
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Deferred client conversion and start-up costs	$ 433.8	$ 254.7
ROU assets	292.6
Deferred sales commissions costs	104.4	95.5
Contract assets	81.9	47.5	$ 47.5
Deferred data center costs	24.5	29.0
Long-term investments	141.6	100.4
Long-term broker fees	32.8	35.3
Other	30.2	30.6
Total	$ 1,141.9	$ 593.1