SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Narrative (Details)	12 Months Ended
	Dec. 31, 2021 USD ($) unit	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)	Oct. 01, 2021 USD ($)
Disaggregation of Revenue [Line Items]
Revenue	$ 1,685,438,000	$ 1,467,925,000	$ 1,326,205,000
Amortization of contract assets	84,700,000	64,800,000
Current contract assets	37,971,000	49,194,000
Non-current contract assets	1,100,000	400,000
Revenue reserve	2,700,000	1,800,000
Allowance and reserves	36,400,000	27,800,000
Deferred revenue recognized	54,500,000	57,600,000
Current deferred revenue	53,834,000	54,654,000
Non-current deferred revenue	$ 100,000	200,000
Cash equivalents maturity period at purchase (less than)	91 days
Marketable debt securities	$ 0	49,995,000
Number of reporting units | unit	2
Market capitalization				$ 6,200,000,000
Amount by which market capitalization exceeds carrying value				5,000,000,000
Advertising expense	$ 556,400,000	487,600,000	484,300,000
Redeemable Noncontrolling Interest
Disaggregation of Revenue [Line Items]
Adjustment of redeemable noncontrolling interests to fair value	28,300,000	1,600,000	8,200,000
International
Disaggregation of Revenue [Line Items]
Revenue	104,387,000	88,689,000	91,450,000
Cash equivalents	0	0
Europe
Disaggregation of Revenue [Line Items]
Revenue	82,867,000	72,497,000	76,313,000
Amount by which market capitalization exceeds carrying value				164,200,000
North America
Disaggregation of Revenue [Line Items]
Revenue	$ 1,602,571,000	1,395,428,000	$ 1,249,892,000
Amount by which market capitalization exceeds carrying value				$ 4,900,000,000
Effect of adoption of ASU No. 2014-09
Disaggregation of Revenue [Line Items]
Revenue		$ 73,800,000
Discount Rate | Europe
Disaggregation of Revenue [Line Items]
Measurement input (as a percent)	0.15	0.15
Discount Rate | Minimum
Disaggregation of Revenue [Line Items]
Measurement input (as a percent)	0.111	0.115
Discount Rate | Maximum
Disaggregation of Revenue [Line Items]
Measurement input (as a percent)	0.150	0.150
Royalty Rate | Indefinite-lived Intangible Assets | Minimum
Disaggregation of Revenue [Line Items]
Measurement input (as a percent)	0.020	0.020
Royalty Rate | Indefinite-lived Intangible Assets | Maximum
Disaggregation of Revenue [Line Items]
Measurement input (as a percent)	0.050	0.055