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Earnings per Share - Composition of Weighted-Average Common Shares (Denominator) Used in Basic and Diluted Earnings Per Share (Detail) - $ / shares
 3 Months Ended
Mar. 31, 2023
Mar. 31, 2022
Earnings Per Share [Abstract]    
Weighted Average Number of Shares Issued, Basic 120,266,238 113,914,902
Average treasury shares (in shares) (20,498,898) (19,654,309)
Weighted Average Number of Shares, Deferred Compensation Plans (55,821) (55,684)
Average unearned nonvested shares (150,688) (126,210)
Weighted average common shares and common stock equivalents used to calculate basic earnings per share (in shares) 99,560,831 94,078,699
Additional common stock equivalents (nonvested stock) used to calculate diluted earnings per share 163,133 176,913
Weighted Average Number Of Additional Shares Deferred Compensation Plan 55,852 55,712
Weighted average common shares and common stock equivalents used to calculate diluted earnings per share (in shares) 99,779,816 94,311,324
Basic Earnings per Share (in dollars per share) $ 0.30 $ 0.29
Diluted Earnings per Share (in dollars per share) $ 0.30 $ 0.29