Equity - Weighted Average Assumptions Used in Valuation (Detail) - $ / shares	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Equity [Abstract]
Volatility	38.00%	31.90%	31.60%
Risk-free interest rate	0.40%	1.40%	2.50%
Dividend yield	0.30%	0.60%	0.80%
Expected life (years)	4 years 7 months 6 days	4 years 3 months 18 days	4 years 1 month 6 days
Weighted average fair value per option	$ 30.69	$ 14.83	$ 8.89