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Stock-Based Compensation Plans - Time Based and Performance Based Stock Awards Outstanding (Detail)
 9 Months Ended
Sep. 30, 2025
$ / shares
shares
Time-Based Equity Awards  
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]  
Outstanding, Beginning Balance | shares 1,275,962
Granted | shares 1,055,576
Vested | shares (900,678)
Forfeited | shares (35,575)
Outstanding, Ending Balance | shares 1,395,285
Outstanding, Beginning Balance, weighted average grant date fair value | $ / shares $ 28.37
Granted, weighted average grant date fair value | $ / shares 40.28
Vested, weighted average grant date fair value | $ / shares 31.3
Forfeited, weighted average grant date fair value | $ / shares 31.68
Outstanding, Ending Balance, weighted average grant date fair value | $ / shares $ 35.4
Time-Based Liability Awards  
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]  
Outstanding, Beginning Balance | shares 18,492
Granted | shares 5,815
Vested | shares (15,443)
Forfeited | shares 0
Outstanding, Ending Balance | shares 8,864
Outstanding, Beginning Balance, weighted average grant date fair value | $ / shares $ 28.98
Granted, weighted average grant date fair value | $ / shares 38.89
Vested, weighted average grant date fair value | $ / shares 29.02
Forfeited, weighted average grant date fair value | $ / shares 0
Outstanding, Ending Balance, weighted average grant date fair value | $ / shares $ 35.39
Performance-Based Stock Awards  
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]  
Outstanding, Beginning Balance | shares 664,859 [1]
Granted | shares 220,266 [1]
Vested | shares (264,917) [1]
Forfeited | shares 0 [1]
Outstanding, Ending Balance | shares 620,208 [1]
Outstanding, Beginning Balance, weighted average grant date fair value | $ / shares $ 27.45
Granted, weighted average grant date fair value | $ / shares 44.39
Vested, weighted average grant date fair value | $ / shares 23.55
Forfeited, weighted average grant date fair value | $ / shares 0
Outstanding, Ending Balance, weighted average grant date fair value | $ / shares $ 35.13
[1] Amounts granted reflect performance units initially granted. The actual payout will be between zero and 200% depending on achievement of either total stockholder return ranking compared to our peers over the performance period or on the achievement of internal performance targets.