Segment Information (Net Sales) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2018	Mar. 31, 2017
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	$ 632,720	$ 588,798	$ 1,838,171	$ 1,740,614
United States [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	296,635	305,595	860,987	868,127
United Kingdom [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	238,321	200,976	698,968	633,439
All Other [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	$ 97,764	$ 82,227	$ 278,216	$ 239,048