Annual report pursuant to Section 13 and 15(d)

Stock-Based Compensation Plans - Outstanding Awards Under 2013 Omnibus Equity Incentive Plan (Detail)

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Stock-Based Compensation Plans - Outstanding Awards Under 2013 Omnibus Equity Incentive Plan (Detail) - USD ($)
$ / shares in Units, $ in Millions
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Shares      
Nonvested shares at beginning (in shares) 1,741,461 980,936 918,379
Granted (in shares) 734,388 1,094,507 381,215
Vested (in shares) (465,480) (306,276) (277,253)
Forfeited/canceled (in shares) (10,624) (27,706) (41,405)
Nonvested shares at ending (in shares) 1,999,745 1,741,461 980,936
Weighted- Average Grant Date Fair Value Per Share      
Nonvested at beginning (in dollars per share) $ 42.14 $ 36.32 $ 33.73
Granted (in dollars per share) 35.20 45.41 39.03
Vested (in dollars per share) 40.87 35.49 31.89
Forfeited/canceled (in dollars per share) 40.96 39.11 33.47
Nonvested at ending (in dollars per share) $ 39.90 $ 42.14 $ 36.32
Unrecognized stock-based compensation expense $ 64.1    
Unrecognized Compensation Expense Is Expected To Be Recognized Over A Weighted Average Period (Years) 3 years 3 months 25 days    
Restricted Stock Units And Restricted Stock Awards | 2013 Omnibus Equity Incentive Plan      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Aggregate fair value of awards that are vested $ 15.1 $ 13.4 $ 10.2
Deferred stock units | 2013 Omnibus Equity Incentive Plan      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Aggregate fair value of awards that are vested   $ 13.4 $ 2.4