CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2025	Dec. 31, 2024
Statement of Comprehensive Income [Abstract]
Net income		$ 168,126	$ 229,906	$ 314,786	$ 314,328
Other comprehensive income (loss)—net of tax:
Net foreign currency translation adjustments		6,843	1,167	29,020	(4,023)
Unrealized gain (loss) on cash flow hedges:
Unrealized gain (loss) - net of tax	[1]	668	(4,188)	(1,007)	(3,534)
(Gain) loss reclassified into net income - net of tax	[2]	45	1,010	(67)	1,272
Unrealized gain (loss) on available-for-sale financial assets:
Unrealized gain (loss) - net of tax	[3]	510	436	671	684
Actuarial gain (loss) relating to defined benefit pension plans:
Actuarial gain (loss) - net of tax	[4]	0	0	0	(1,045)
Amortization of actuarial (gain) loss into net income - net of tax	[5]	13	252	18	486
Total other comprehensive income (loss), net		8,079	(1,323)	28,635	(6,160)
Total comprehensive income		176,205	228,583	343,421	308,168
Comprehensive income attributable to non-controlling interests		(35)	(44)	(79)	(98)
Total comprehensive income attributable to OpenText		$ 176,170	$ 228,539	$ 343,342	$ 308,070

[1] Net of tax expense (recovery) of $241 and $(1,510) for the three months ended December 31, 2025 and 2024, respectively; $(363) and $(1,274) for the six months ended December 31, 2025 and 2024, respectively.

[2] Net of tax expense (recovery) of $16 and $364 for the three months ended December 31, 2025 and 2024, respectively; $(25) and $458 for the six months ended December 31, 2025 and 2024, respectively.

[3] Net of tax expense (recovery) of $243 and $18 for the three months ended December 31, 2025 and 2024, respectively; $309 and $225 for the six months ended December 31, 2025 and 2024, respectively.

[4] Net of tax expense (recovery) of $— and $— for the three months ended December 31, 2025 and 2024, respectively; $— and $(43) for the six months ended December 31, 2025 and 2024, respectively.

[5] Net of tax expense (recovery) of $(21) and $92 for the three months ended December 31, 2025 and 2024, respectively; $(17) and $184 for the six months ended December 31, 2025 and 2024, respectively.