Stock-Based Incentive Plans - Movement in Outstanding Shares of Restricted Class A Common Stock and Weighted-Average Grant Date Fair Value Per Share (Detail) - Restricted Class A Common Stock	3 Months Ended
	Mar. 31, 2022 $ / shares shares
Restricted Class A Common Stock
Beginning balance (in shares) | shares	1,706,121
Granted (in shares) | shares	427,634
Vested (in shares) | shares	(162,055)
Ending balance (in shares) | shares	1,971,700
Weighted-Average Grant Date Fair Value Per Share
Beginning balance (in dollars per share) | $ / shares	$ 31.19
Granted (in dollars per share) | $ / shares	31.11
Vested (in dollars per share) | $ / shares	32.61
Ending balance (in dollars per share) | $ / shares	$ 31.06