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SHARE-BASED COMPENSATION - Additional Information (Details) - USD ($) $ / shares in Units, $ in Millions	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Apr. 30, 2021	Mar. 31, 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant, Giving Effect to Future Stock Split			103,350,000	97,350,000
Options exercisable, number of shares	9,500,000
Options exercisable, weighted-average exercise price (usd per share)	$ 94.76
Employee Stock Purchase Plan, number of shares purchased by employees	500,000	500,000
2010 Incentive Award Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock reserved for issuance			34,450,000	32,450,000
Number of shares reserved for future issuance	25,500,000
Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Forfeited (in shares)	300,000
Restricted Stock Units (RSUs) | 2010 Incentive Award Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares reserved for future issuance	11,100,000
ESPP
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Employee Stock Purchase Plan, value of shares purchased by employees	$ 75.9	$ 71.2

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The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period.

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The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.

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