Segment Information (Segment Data) (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2017
Segment Reporting Information [Line Items]
Net Sales	$ 557,682	$ 599,797	$ 584,156	$ 560,833	$ 619,598	$ 632,720	$ 616,232	$ 589,219	$ 2,302,468	$ 2,457,769	$ 2,343,505
Operating Income	$ 740	$ 23,865	(15,387)	(24,104)	16,580	29,254	30,965	29,241	(14,886)	106,040	109,423
Chief Executive Officer Succession Plan expense, net			7,484	14,420					30,156	520	0
Project Terra costs and other									40,107	18,026	10,388
Accounting review and remediation costs, net of insurance proceeds			920	$ 3,414	2,887	$ 3,313	$ 4,451	$ 3,642	4,334	9,293	29,562
Long-lived asset and intangibles impairment									33,719	14,033	40,452
Proceeds from insurance claim									4,460	0	0
Goodwill impairment					7,700				0	7,700	0
Trade Names
Segment Reporting Information [Line Items]
Long-lived asset and intangibles impairment			$ 17,900		$ 5,632				17,900	5,632
United States
Segment Reporting Information [Line Items]
Goodwill impairment										0
United States | Trade Names
Segment Reporting Information [Line Items]
Long-lived asset and intangibles impairment									11,300		6,500
United Kingdom
Segment Reporting Information [Line Items]
Long-lived asset and intangibles impairment											$ 26,373
Goodwill impairment										0
United Kingdom | Trade Names
Segment Reporting Information [Line Items]
Long-lived asset and intangibles impairment									2,787	532
Rest of World
Segment Reporting Information [Line Items]
Goodwill impairment										7,700
Rest of World | Trade Names
Segment Reporting Information [Line Items]
Long-lived asset and intangibles impairment									$ 3,813	$ 5,100
Sales | Customer Concentration Risk | First Customer
Segment Reporting Information [Line Items]
Concentration risk, percentage									11.00%	11.00%	12.00%
Sales | Customer Concentration Risk | Second Customer
Segment Reporting Information [Line Items]
Concentration risk, percentage									10.00%	11.00%	11.00%
Operating Segments
Segment Reporting Information [Line Items]
Net Sales									$ 2,302,468	$ 2,457,769	$ 2,343,505
Operating Income									109,097	181,025	229,265
Operating Segments | United States
Segment Reporting Information [Line Items]
Net Sales									1,009,406	1,084,871	1,107,806
Operating Income									23,864	86,319	145,307
Operating Segments | United Kingdom
Segment Reporting Information [Line Items]
Net Sales									885,488	938,029	851,757
Operating Income									52,413	56,046	51,948
Operating Segments | Rest of World
Segment Reporting Information [Line Items]
Net Sales									407,574	434,869	383,942
Operating Income									32,820	38,660	32,010
Corporate and Other
Segment Reporting Information [Line Items]
Operating Income									(123,983)	(74,985)	(119,842)
Chief Executive Officer Succession Plan expense, net									30,156
Project Terra costs and other									28,443	10,118	10,388
Accounting review and remediation costs, net of insurance proceeds									$ 4,334	$ 9,293	29,562
Long-lived asset and intangibles impairment											14,079
Corporate and Other | United Kingdom
Segment Reporting Information [Line Items]
Long-lived asset and intangibles impairment											$ 7,579