BUSINESS COMBINATIONS - Additional Information (Details) $ in Millions			3 Months Ended	6 Months Ended	12 Months Ended
	Jun. 08, 2026 USD ($)	Feb. 02, 2026 USD ($)	Jun. 30, 2026 USD ($) arrangement	Jun. 30, 2026 USD ($) business arrangement	Dec. 31, 2025 USD ($) business
Business Combination [Line Items]
Number of arrangements for provisions | arrangement			3	3
CertaSite, LLC
Business Combination [Line Items]
Total consideration		$ 271
Cash paid at closing		268
Cash deposited into escrow		3
Accrued consideration		$ 0
Onyx-Fire
Business Combination [Line Items]
Total consideration	$ 522
Cash paid at closing	518
Cash deposited into escrow	4
Accrued consideration	$ 0
Series of Individually Immaterial Business Combinations
Business Combination [Line Items]
Total consideration				$ 47	$ 225
Cash paid at closing				37	186
Cash deposited into escrow				$ 0	$ 17
Number of businesses acquired | business				7	14
Accrued consideration				$ 10	$ 22
Goodwill, expected tax deductible amount			$ 143	143	$ 118
Number of businesses not finalized its accounting | business					7
Net revenues from material acquisitions			36	51
Operating income from material acquisitions			1	1
API Acquisition
Business Combination [Line Items]
Contingent compensation			0	0	$ 7
Maximum payout of contingent compensation			15	15	15
Payout of accrued contingent compensation			0	0	7
Liability for deferred payments			$ 45	$ 45	$ 39
API Acquisition | Minimum
Business Combination [Line Items]
Contingent compensation arrangements recognized period				1 year
Liability for deferred payments recognition period				1 year
API Acquisition | Maximum
Business Combination [Line Items]
Contingent compensation arrangements recognized period				4 years
Liability for deferred payments recognition period				3 years