ACQUISITIONS - Additional Information (Details) - USD ($) $ in Millions		1 Months Ended			3 Months Ended	9 Months Ended
	Nov. 01, 2024	Jan. 31, 2026	Sep. 30, 2025	Aug. 31, 2025	Sep. 30, 2024	Mar. 31, 2026	Mar. 31, 2025	Jun. 30, 2025
Business Combination [Line Items]
Cash payments						$ 121.0	$ 193.5
Contingent consideration obligations						40.6		$ 14.0
Goodwill						$ 3,735.2		$ 3,609.6
Acolin
Business Combination [Line Items]
Cash payments		$ 65.4
Deferred payments		2.4
Contingent consideration obligations		16.9
Net tangible assets acquired		10.7
Goodwill		73.9
Intangible assets		$ 21.4
Acolin | Customer Relationships
Business Combination [Line Items]
Weighted average useful life		7 years
Acolin | Software Technology
Business Combination [Line Items]
Weighted average useful life		5 years
iJoin
Business Combination [Line Items]
Cash payments			$ 31.9
Deferred payments			3.5
Contingent consideration obligations			8.5
Goodwill			24.1
Intangible assets			19.7
Net tangible assets acquired			$ 0.1
iJoin | Customer Relationships
Business Combination [Line Items]
Weighted average useful life			7 years
iJoin | Software Technology
Business Combination [Line Items]
Weighted average useful life			5 years
Signal
Business Combination [Line Items]
Deferred payments				$ 2.7
Aggregate purchase price				$ 26.6
SIS
Business Combination [Line Items]
Cash payments	$ 185.5
Net tangible assets acquired	1.9
Goodwill	38.3
Intangible assets	$ 149.1
Weighted average useful life	10 years
Aggregate purchase price	$ 185.5
2024 Immaterial Acquisition
Business Combination [Line Items]
Aggregate purchase price					$ 8.0