Selected Quarterly Financial Data (Unaudited) - Schedule of Selected Quarterly Financial Data (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	[1]
Quarterly Financial Information Disclosure [Abstract]
Revenues, net	$ 617,333	$ 585,283	$ 525,146	$ 661,093	$ 698,881	$ 681,048	$ 647,094	$ 621,825	$ 2,388,855	$ 2,648,848	$ 2,433,492
Operating income	293,939	264,532	212,811	200,983	320,796	329,141	297,317	284,176	972,265	1,231,430	1,090,698
Net income	$ 209,851	$ 188,817	$ 158,488	$ 147,060	$ 235,510	$ 225,805	$ 261,651	$ 172,107	$ 704,216	$ 895,073	$ 811,483	[2]
Earnings per share:
Basic earnings per share (in usd per share)	$ 2.51	$ 2.26	$ 1.89	$ 1.73	$ 2.72	$ 2.61	$ 3.03	$ 2.00	$ 8.38	$ 10.36	$ 9.14
Diluted earnings per share (in usd per share)	$ 2.44	$ 2.19	$ 1.83	$ 1.67	$ 2.60	$ 2.49	$ 2.90	$ 1.93	$ 8.12	$ 9.94	$ 8.81
Weighted average shares outstanding:
Basic (in shares)	83,514	83,719	83,895	84,902	86,600	86,662	86,360	85,941	84,005	86,401	88,750
Diluted (in shares)	85,846	86,273	86,570	88,205	90,427	90,522	90,131	89,244	86,719	90,070	92,151

[1] The Company applied the modified retrospective transition method when adopting ASU 2016-02 "Leases", therefore the Company's 2018 prior results were not restated to reflect ASU 2016-02. Refer to footnote 14.

[2] The Company applied the modified retrospective transition method when adopting ASU 2016-02 "Leases", therefore the Company's 2018 prior results were not restated to reflect ASU 2016-02. Refer to footnote 14.