Summary of Significant Accounting Policies (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	May 01, 2020
Accounting Policies [Line Items]
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net	$ (19,020)	$ (11,666)	$ (32,515)	$ 7,691
Foreign Currency Transaction Gain (Loss), Realized	1,809	2,645	5,884	(767)
Other Nonoperating Gains (Losses)	13	(19)	679	(290)
Total other (expense) income, net	$ (17,198)	$ (9,040)	$ (25,952)	$ 6,634
Weighted average shares outstanding — basic	26,003,649	27,036,675	25,974,823	28,391,855
Weighted average shares outstanding — diluted	26,384,460	27,916,759	26,390,273	29,223,116
Weighted average anti-dilutive shares excluded from diluted net (loss) income per share attributable to Cimpress plc (1)	3,129		1,565	0
Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements	380,811	880,084	415,450	831,261
Class of Warrant or Right, Exercise Price of Warrants or Rights	$ 60		$ 60		$ 60
Income tax expense (benefit)	$ 12,954	$ (93,795)	$ 19,748	$ (87,680)
Accounting Standards Update 2019-12 [Member]
Accounting Policies [Line Items]
Income tax expense (benefit)			$ 2,771
Warrant [Member]
Accounting Policies [Line Items]
Incremental Common Shares Attributable to Dilutive Effect of Share-based Payment Arrangements			317,224
Foreign Exchange Forward [Member]
Accounting Policies [Line Items]
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net	$ (19,496)	$ (11,666)	$ (32,964)	$ 7,691