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Earnings Per Share Data ("EPS") and Stock Based Compensation - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Anti-dilutive weighted average stock options excluded from computation of earnings per share	7,100,000	8,500,000	6,500,000	7,800,000
Unrecognized compensation cost related to unvested options and restricted stock	$ 128,100		$ 128,100
Stock options granted during period			2,545,966
Weighted-average grant date fair value, per share			$ 14.25
Compensation cost recognized			$ 33,954	$ 34,676
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation cost recognized, pre-tax charge	13,200	$ 14,700	28,600	30,500
Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation cost recognized, pre-tax charge	$ 2,400	$ 2,100	$ 4,700	$ 3,700
Unrecognized compensation cost vesting period			2 years 7 months 6 days
Restricted shares granted during period			125,467
Weighted-average grant date fair value, per share			$ 68.06
Unvested Stock option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation cost vesting period			2 years 7 months 6 days