SHARE-BASED COMPENSATION AND BENEFIT PLANS (Tables)

12 Months Ended

Dec. 31, 2021

Share-Based Compensation and Benefit Plans

Summary of shares authorized and available for future issuance under compensation and benefit plans

	December 31, 2021
	Total Shares Authorized for	Shares Available for Future
Plans	Issuance under the Plans	Issuance under the Plans
Incentive Plans	35,650	5,742
Employee Stock Purchase Plan	4,250	469
Profit Sharing and Savings Plan	4,200	349

Employee stock option [Member]

Share-Based Compensation and Benefit Plans

Summary of stock options

				Average		Aggregate
	Shares	Weighted- Average		Remaining		Intrinsic Value
	(in thousands)	Exercise Price		Contractual Terms		(in thousands)
Outstanding at December 31, 2020	1,500	$	248.52
Granted	134		491.71
Exercised	(404)		167.78
Forfeited or expired	(24)		372.95
Outstanding at December 31, 2021	1,206	$	300.09	5.8	Years	$	489,893
Vested or expected to vest at December 31, 2021	1,182	$	297.47	5.7	Years	$	483,286
Exercisable at December 31, 2021	802	$	249.13	4.7	Years	$	366,680

Black-Scholes option pricing model

	December 31,
	2021		2020		2019
Risk free interest rate	0.82	%	0.86	%	2.26	%
Expected life	5.9	Years	5.9	Years	5.7	Years
Expected volatility	30.0	%	26.4	%	25.1	%
Expected dividend yield	—	%	—	%	—	%

Summary of activity of share-based compensation and benefit plans

	For the Year Ended
	December 31,
	2021		2020		2019
Compensation expense for stock options awarded (in thousands)	$	20,035	$	18,435	$	18,044
Income tax benefit from compensation expense related to stock options (in thousands)		4,989		4,620		4,436
Total intrinsic value of stock options exercised (in thousands)		163,722		79,451		117,489
Cash received from exercise of stock options (in thousands)		67,761		46,282		46,106
Weighted-average grant-date fair value of options awarded	$	146.57	$	106.76	$	105.37
Weighted-average remaining contractual life of exercisable options (in years)		4.7		4.5		4.6

Restricted stock [Member]

Share-Based Compensation and Benefit Plans

Summary of activity of share-based compensation and benefit plans

	For the Year Ended
	December 31,
	2021		2020		2019
Compensation expense for restricted shares awarded	$	1,602	$	1,488	$	1,387
Income tax benefit from compensation expense related to restricted shares	$	399	$	373	$	341
Total fair value of restricted shares at vest date	$	2,815	$	1,591	$	1,633
Shares awarded under the plans		3		4		4
Weighted-average grant-date fair value of shares awarded under the plans	$	509.24	$	412.67	$	355.91

Employee stock purchase plan [Member]

Share-Based Compensation and Benefit Plans

Summary of ESPP plan activity

	For the Year Ended
	December 31,
	2021		2020		2019
Compensation expense for shares issued under the ESPP	$	3,019	$	2,824	$	2,490
Income tax benefit from compensation expense related to shares issued under the ESPP	$	752	$	708	$	612
Shares issued under the ESPP		36		45		43
Weighted-average price of shares issued under the ESPP	$	473.22	$	353.04	$	329.69

Employee [Member] | Restricted stock [Member]

Share-Based Compensation and Benefit Plans

Summary of restricted stock

		Weighted-Average Grant-Date
	Shares	Fair Value
Non-vested at December 31, 2020	4	$	358.58
Granted during the period	1		451.84
Vested during the period (1)	(2)		430.04
Forfeited during the period	—		—
Non-vested at December 31, 2021	3	$	419.47

(1) Includes less than one thousand shares withheld to cover employees’ taxes upon vesting.

Director [Member] | Restricted stock [Member]

Share-Based Compensation and Benefit Plans

Summary of restricted stock

		Weighted-Average Grant-Date
	Shares	Fair Value
Non-vested at December 31, 2020	4	$	371.46
Granted during the period	1		559.53
Vested during the period	(3)		556.74
Forfeited during the period	—		—
Non-vested at December 31, 2021	2	$	508.45