Summary of Significant Accounting Policies - Additional Information (Detail) - USD ($)	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Summary Of Significant Accounting Policy [Line Items]
Debt instrument basis spread on variable rate	1.00%
Restricted Stock [Member]
Summary Of Significant Accounting Policy [Line Items]
Shares withheld to satisfy tax withholding obligations	919
Stock Repurchase Plan [Member]
Summary Of Significant Accounting Policy [Line Items]
Available authorized repurchase amount	$ 134,900,000
Stock repurchase plan expiration date	Mar. 12, 2022
Stock repurchased, average costs per share	$ 410.07
Maximum [Member] | Stock Repurchase Plan [Member]
Summary Of Significant Accounting Policy [Line Items]
Stock repurchase plan, authorized amount		$ 250,000,000.0
Accounting Standards Update 2019-12 [Member]
Summary Of Significant Accounting Policy [Line Items]
Accounting standards update, adoption date	Jan. 01, 2021
Accounting standards update, adopted	true
Accounting standards update, immaterial effect	true
Accounting Standards Update 2018-15 [Member]
Summary Of Significant Accounting Policy [Line Items]
Accounting standards update, adoption date	Jan. 01, 2020
Accounting standards update, adopted	true
Accounting standards update, immaterial effect	true
Accounting Standards Update 2018-13 [Member]
Summary Of Significant Accounting Policy [Line Items]
Accounting standards update, adoption date	Jan. 01, 2020
Accounting standards update, adopted	true
Accounting standards update, immaterial effect	true