Accounts Receivable - Provisions (Details) - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2016
Chargebacks
Accounts receivable
Provisions	$ 1,100.0	$ 881.3	$ 646.9
Rebates
Accounts receivable
Provisions	296.8	297.0	189.2
Returns
Accounts receivable
Provisions	24.0	25.4	21.3
Other
Accounts receivable
Provisions	$ 69.9	$ 53.4	$ 50.0