Accounts Receivable - Provisions (Details) - USD ($) $ in Millions	3 Months Ended
	Sep. 30, 2018	Sep. 30, 2017
Chargebacks
Accounts receivable
Provisions	$ 277.9	$ 254.7
Rebates
Accounts receivable
Provisions	64.7	78.5
Returns
Accounts receivable
Provisions	7.3	10.4
Other
Accounts receivable
Provisions	$ 13.9	$ 12.4