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SHARE-BASED COMPENSATION - Schedule of Estimated Fair Value of Option Using Black-Scholes Option Pricing Model, Weighted Average Assumptions (Details) - $ / shares	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Stock Options
Stock Options
Risk-free interest rate	1.60%	0.70%
Expected term (in years)	3 years 6 months	4 years 3 months 18 days
Expected volatility (percent)	35.00%	34.00%
Weighted average fair value at grant date (usd per share)	$ 80.80	$ 70.33
Employee Stock Purchase Program [Abstract]
Risk-free interest rate	1.60%	0.70%
Expected term (in years)	3 years 6 months	4 years 3 months 18 days
Expected volatility (percent)	35.00%	34.00%
Weighted average fair value at grant date (usd per share)	$ 80.80	$ 70.33
ESPP
Stock Options
Risk-free interest rate	0.80%	0.10%
Expected term (in years)	1 year 2 months 12 days	1 year 2 months 12 days
Expected volatility (percent)	37.00%	35.00%
Weighted average fair value at grant date (usd per share)	$ 88.85	$ 74.39
Employee Stock Purchase Program [Abstract]
Risk-free interest rate	0.80%	0.10%
Expected term (in years)	1 year 2 months 12 days	1 year 2 months 12 days
Expected volatility (percent)	37.00%	35.00%
Weighted average fair value at grant date (usd per share)	$ 88.85	$ 74.39

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Employee Stock Purchase Program

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Stock Options

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- Definition

The risk-free interest rate assumption that is used in valuing an option on its own shares.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (f)(2)(iv)
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Rate of weighted-average expected volatility for award under share-based payment arrangement.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
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The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
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Expected term of award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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