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Employee Benefit Plans (Shares Issued in Connection with Stock Compensation Awards) (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Retirement Benefits [Abstract]
New shares issued from available authorized shares	0	49,887	118,389
Shares issued from available treasury stock	589,782	217,470	281,421
Total	589,782	267,357	399,810
Proceeds from stock option exercises	$ 22,643	$ 9,299	$ 16,659
Intrinsic value of stock options exercised	13,454	3,614	19,616
Fair value of restricted/director deferred stock units vested	$ 35,922	$ 13,445	$ 19,308

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Treasury Shares Issued Related To Stock Option Exercises

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- Definition

Amount of cash inflow from exercise of option under share-based payment arrangement.

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Amount of accumulated difference between fair value of underlying shares on dates of exercise and exercise price on options exercised (or share units converted) into shares.

+ References

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Amount by which current fair value of underlying stock exceeds exercise price of fully vested and expected to vest exercisable or convertible options. Includes, but is not limited to, unvested options for which requisite service period has not been rendered but that are expected to vest based on achievement of performance condition, if forfeitures are recognized when they occur.

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Number of shares issued under share-based payment arrangement.

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Number of shares issued during the period as a result of an employee stock purchase plan.

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