Accounts Receivable - Provisions (Details) - USD ($) $ in Millions	3 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
Chargebacks
Accounts receivable
Provisions	$ 254.7	$ 198.5
Rebates
Accounts receivable
Provisions	78.5	69.5
Returns
Accounts receivable
Provisions	10.4	6.8
Other
Accounts receivable
Provisions	$ 12.4	$ 15.5