Segment Information (Details) $ in Thousands		3 Months Ended								12 Months Ended
		Jun. 30, 2018 USD ($)	Mar. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)	Sep. 30, 2017 USD ($)	Jun. 30, 2017 USD ($)	Mar. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)	Sep. 30, 2016 USD ($)	Jun. 30, 2018 USD ($)		Jun. 30, 2017 USD ($)		Jun. 30, 2016 USD ($)
Segment Reporting Information [Line Items]
Payments to Develop Software										$ 40,847		$ 37,307		$ 26,324
Number of Reportable Segments										4
Revenues, Including Intersegment		$ 631,134	$ 636,069	$ 762,054	$ 563,284	$ 564,256	$ 550,585	$ 576,851	$ 443,713	$ 2,613,545		2,141,095		1,788,044
Revenue										2,592,541		2,135,405		1,788,044
Other Operating Income										(308,334)		(197,344)		(263,826)
Depreciation, Depletion and Amortization										169,005		158,400		131,918
Change in contingent earn-out liability										1,774		39,377		0
Share-based compensation expense										(50,466)		(48,627)		(23,772)
Restructuring Charges	[1]									(15,236)		(26,700)		(381)
Equity Method Investment, Realized Gain (Loss) on Disposal										47,945	[2]	0		0
(Loss) income from operations										157,800		(45,702)		78,193
Other (expense) income, net										(21,032)		10,362		26,098
Interest expense, net										(53,043)		(43,977)		(38,196)
Loss on early extinguishment of debt										(17,359)		0		0
Income (loss) before income taxes										66,366		(79,317)		66,095
Property, Plant and Equipment, Additions										60,930		74,157		80,435
Long-lived assets	[3]	482,864				478,933				482,864		478,933
Deferred tax assets		67,087				48,004				67,087		48,004
Goodwill		520,843				514,963				520,843		514,963		466,005
Intangible assets, net		230,201				275,924				230,201		275,924
Property, plant and equipment, net		483,664				511,947				483,664		511,947
Canada [Member]
Segment Reporting Information [Line Items]
Long-lived assets		81,334				85,926				81,334		85,926
Netherlands [Member]
Segment Reporting Information [Line Items]
Long-lived assets		109,556				83,223				109,556		83,223
Switzerland
Segment Reporting Information [Line Items]
Long-lived assets		52,523				49,017				52,523		49,017
Australia [Member]
Segment Reporting Information [Line Items]
Long-lived assets		22,418				22,961				22,418		22,961
Jamaica [Member]
Segment Reporting Information [Line Items]
Long-lived assets		21,720				21,492				21,720		21,492
FRANCE
Segment Reporting Information [Line Items]
Long-lived assets		20,131				22,794				20,131		22,794
ITALY
Segment Reporting Information [Line Items]
Long-lived assets		42,514				44,423				42,514		44,423
JAPAN
Segment Reporting Information [Line Items]
Long-lived assets		19,117				20,686				19,117		20,686
Other
Segment Reporting Information [Line Items]
Revenue										1,173,116		978,275		881,353
Long-lived assets		67,842				64,377				67,842		64,377
UNITED STATES
Segment Reporting Information [Line Items]
Revenue										1,078,544		901,061		781,335
Long-lived assets		45,709				64,034				45,709		64,034
Waltham Lease [Member]
Segment Reporting Information [Line Items]
Interest Expense										7,489		7,727		6,287
Property, plant and equipment, net		111,926				116,045				111,926		116,045
Central and corporate costs [Member]
Segment Reporting Information [Line Items]
Payments to Develop Software										8,225		7,942		9,902
(Increase) decrease in segment profit												(1,290)		(1,080)
Other Operating Income										131,400		118,093
Depreciation, Depletion and Amortization										(12,940)		(13,061)
Property, Plant and Equipment, Additions										1,208		4,399		13,595
Quarterly Financial Information, Quarterly Charges and Credits, Amount Reconciling to Previously Reported Results												1,290		1,080
All Other Business Units [Member]
Segment Reporting Information [Line Items]
Payments to Develop Software										2,336		1,568		2,032
Revenues, Including Intersegment										87,583	[4]	128,795	[4]	138,244
(Increase) decrease in segment profit												(560)		(402)
Other Operating Income										34,620		31,307		9,328
Depreciation, Depletion and Amortization										(9,609)		(15,074)		(18,111)
Restructuring Charges										(819)
Property, Plant and Equipment, Additions										1,680		12,735		19,160
Goodwill		11,431				11,431				11,431		11,431		24,880
Quarterly Financial Information, Quarterly Charges and Credits, Amount Reconciling to Previously Reported Results												560		402
Vistaprint Business Unit [Member]
Segment Reporting Information [Line Items]
Payments to Develop Software										24,794		23,624		11,390
Revenues, Including Intersegment										1,462,686	[5]	1,310,975	[5]	1,220,751
(Increase) decrease in segment profit												(2,494)		(1,919)
Other Operating Income										(241,479)		(167,687)		(214,947)
Depreciation, Depletion and Amortization										(65,311)		(63,923)		(40,686)
Restructuring Charges										(12,112)
Property, Plant and Equipment, Additions										35,265		38,434		32,028
Goodwill		146,207				147,207				146,207		147,207		121,752
Quarterly Financial Information, Quarterly Charges and Credits, Amount Reconciling to Previously Reported Results												2,494		1,919
Upload and Print Business Units [Member]
Segment Reporting Information [Line Items]
Payments to Develop Software										4,010		4,173		3,000
Revenues, Including Intersegment										730,010	[6]	588,613	[6]	432,638
(Increase) decrease in segment profit												(644)		(436)
Other Operating Income										(79,310)		(63,189)		(58,207)
Depreciation, Depletion and Amortization										(59,599)		(56,073)		(47,696)
Property, Plant and Equipment, Additions										16,212		14,875		15,652
Goodwill		328,771				321,805				328,771		321,805		319,373
Quarterly Financial Information, Quarterly Charges and Credits, Amount Reconciling to Previously Reported Results												644		436
National Pen CO. LLC [Member]
Segment Reporting Information [Line Items]
Payments to Develop Software										1,482		0		0
Revenues, Including Intersegment										333,266	[7]	112,712	[7]	0
Other Operating Income										(22,165)		2,225		0
Depreciation, Depletion and Amortization										(21,546)		(10,269)		0
Restructuring Charges												(1,116)
Property, Plant and Equipment, Additions										6,565		3,714		0
Goodwill		$ 34,434				$ 34,520				34,434		34,520		0
Central and corporate costs
Segment Reporting Information [Line Items]
Other Operating Income														97,672
Depreciation, Depletion and Amortization														(25,425)
Restructuring Charges										(2,249)		(25,584)
Acquisition-related amortization and depreciation [Member]
Segment Reporting Information [Line Items]
Depreciation, Depletion and Amortization										50,149		46,402		40,834
Share-based compensation related to investment consideration [Member]
Segment Reporting Information [Line Items]
Share-based compensation expense										(6,792)		(9,638)		(4,835)
Restructuring Charges
Segment Reporting Information [Line Items]
Share-based compensation expense										(1,327)		(6,257)		0
Restructuring Charges										(15,236)		(26,700)		(381)
Certain impairments [Domain]
Segment Reporting Information [Line Items]
Asset Impairment Charges										0		(9,556)		(41,820)
Change in fair value of contingent consideration [Member]
Segment Reporting Information [Line Items]
Change in contingent earn-out liability	[8]									(2,391)		(40,384)		(6,378)
Operating Segments [Member]
Segment Reporting Information [Line Items]
Revenues, Including Intersegment														1,791,633
Intersegment Eliminations [Member]
Segment Reporting Information [Line Items]
Revenues, Including Intersegment										(21,004)		(5,690)		(3,589)
Intersegment Eliminations [Member] | All Other Business Units [Member]
Segment Reporting Information [Line Items]
Revenues, Including Intersegment										5,985
Intersegment Eliminations [Member] | Vistaprint Business Unit [Member]
Segment Reporting Information [Line Items]
Revenues, Including Intersegment										10,542		$ 5,690		$ 3,589
Intersegment Eliminations [Member] | Upload and Print Business Units [Member]
Segment Reporting Information [Line Items]
Revenues, Including Intersegment										1,521
Intersegment Eliminations [Member] | National Pen CO. LLC [Member]
Segment Reporting Information [Line Items]
Revenues, Including Intersegment										$ 2,956

[1] Share-based compensation is allocated as follows:

[2] ncludes the impact of the gain on the sale of Albumprinter, as well as a bargain purchase gain as defined by ASC 805-30 - "Goodwill or Gain from Bargain Purchase" for an acquisition in which the identifiable assets acquired and liabilities assumed are greater than the consideration transferred, that was recognized in general and administrative expense in our consolidated statement of operations during the

[3] Excludes goodwill of $520,843 and $514,963, intangible assets, net of $230,201 and $275,924, the Waltham lease asset of $111,926 and $116,045, and deferred tax assets of $67,087 and $48,004 as of June 30, 2018 and June 30, 2017, respectively.

[4] All Other Businesses segment revenues include inter-segment revenue of $5,985 for the year ended June 30, 2018. No inter-segment revenue was recognized in the prior comparable periods.

[5] Vistaprint segment revenues include inter-segment revenue of $10,542, $5,690 and $3,589 for the years ended June 30, 2018, 2017 and 2016

[6] Upload and Print segment revenues include inter-segment revenue of $1,521 for the year ended June 30, 2018. No inter-segment revenue was recognized in the prior comparable periods.

[7] National Pen segment revenues include inter-segment revenue of $2,956 for the year ended June 30, 2018. No inter-segment revenue was recognized in the prior comparable periods.

[8] Includes expense recognized for the change in fair value of contingent consideration and compensation expense related to cash-based earn-out mechanisms dependent upon continued employment.