Acquisitions - Narrative (Details) $ in Thousands				12 Months Ended
	Apr. 03, 2025 USD ($)	Oct. 30, 2024 USD ($)	Oct. 01, 2024 USD ($)	Jun. 30, 2025 USD ($)	Jun. 30, 2024 USD ($) acquisition	Jun. 30, 2023 USD ($)
Business Combination [Line Items]
Purchase consideration				$ 1,695,749	$ 90,240	$ 14,462
Goodwill				5,021,805	4,154,844	4,084,705
Goodwill acquired				849,024	$ 69,407
Number of acquisitions | acquisition					3
Applied Insight
Business Combination [Line Items]
Purchase consideration			$ 314,200
Goodwill			217,500
Identifiable intangible assets			95,200
Amount of tax deductible goodwill and intangibles			248,600
Applied Insight | Customer Relationships
Business Combination [Line Items]
Identifiable intangible assets			$ 84,300
Acquired finite-lived intangible assets, weighted average useful life			8 years
Applied Insight | Technology
Business Combination [Line Items]
Identifiable intangible assets			$ 10,900
Acquired finite-lived intangible assets, weighted average useful life			5 years
Azure Summit Technology, Inc
Business Combination [Line Items]
Purchase consideration		$ 1,310,200
Goodwill		581,430
Goodwill acquired				37,900
Accounts receivable, measurement period adjustments				21,300
Intangible assets, measurement period adjustment				14,500
Prepaid expenses and other assets, measurement period adjustment				1,800
Intangible assets		635,000
Azure Summit Technology, Inc | Customer Relationships
Business Combination [Line Items]
Intangible assets		$ 270,500
Azure Summit Technology, Inc | Customer Relationships | Minimum
Business Combination [Line Items]
Acquired finite-lived intangible assets, weighted average useful life		10 years
Azure Summit Technology, Inc | Customer Relationships | Maximum
Business Combination [Line Items]
Acquired finite-lived intangible assets, weighted average useful life		20 years
Azure Summit Technology, Inc | Technology
Business Combination [Line Items]
Intangible assets		$ 364,500
Azure Summit Technology, Inc | Technology | Minimum
Business Combination [Line Items]
Acquired finite-lived intangible assets, weighted average useful life		20 years
Azure Summit Technology, Inc | Technology | Maximum
Business Combination [Line Items]
Acquired finite-lived intangible assets, weighted average useful life		25 years
Identity E2E
Business Combination [Line Items]
Purchase consideration	$ 58,900
Goodwill	50,100
Identifiable intangible assets	10,200
Deferred and contingent acquisition consideration	7,300
Contingency recognized at acquisition date, asset acquired, other than at fair value	$ 7,800
Acquisition-related expenses				14,100
Identity E2E | Domestic
Business Combination [Line Items]
Post-acquisition revenues				$ 368,000
Identity E2E | Customer Relationships
Business Combination [Line Items]
Acquired finite-lived intangible assets, weighted average useful life	10 years
Fiscal 2024 Acquisitions
Business Combination [Line Items]
Goodwill					$ 70,000
Identifiable intangible assets					40,100
Purchase consideration					$ 108,600
Fiscal 2023 Acquisition
Business Combination [Line Items]
Goodwill						14,900
Identifiable intangible assets						2,000
Purchase consideration						$ 15,400