Net Income per Common Share - Summary of Calculation of Basic and Diluted EPS (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2024	Jun. 30, 2024	Mar. 31, 2024	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Sep. 30, 2024	Sep. 30, 2023
Numerator:
Net income	$ 284,783	$ 344,090	$ 258,781	$ 451,457	$ 404,619	$ 333,786	$ 887,654	$ 1,189,862
Denominator:
Weighted average shares outstanding, basic	116,176			124,577			119,120	129,521
Dilutive effect of options and RSUs	764			1,215			996	1,213
Weighted average shares outstanding, diluted	116,940			125,792			120,116	130,734
Net income per share:
Basic	$ 2.45			$ 3.62			$ 7.45	$ 9.19
Diluted	$ 2.44			$ 3.59			$ 7.39	$ 9.1
Antidilutive and contingent RSUs excluded from diluted EPS	271			5			196	3

Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

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