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Earnings per Share
12 Months Ended
Dec. 31, 2023
Earnings Per Share [Abstract]  
Earnings per Share Earnings Per Share
Table 4.1 reconciles basic and diluted EPS amounts:
Earnings per share
Table
4.1
Years Ended December 31,
(In thousands, except per share data)202320222021
Basic earnings per share:
Net income$712,949 $865,349 $634,983 
Weighted average common shares outstanding - basic283,605 305,847 334,330 
Basic earnings per share$2.51 $2.83 $1.90 
Diluted earnings per share:
Net Income$712,949 $865,349 $634,983 
Interest expense, net of tax (1):
9% Debentures1,026 3,228 14,343 
Diluted income available to common shareholders$713,975 $868,577 $649,326 
Weighted-average shares - basic283,605 305,847 334,330 
Effect of dilutive securities:
Unvested restricted stock units2,427 1,917 1,782 
9% Debentures1,123 3,465 15,196 
Weighted average common shares outstanding - diluted287,155 311,229 351,308 
Diluted income per share$2.49 $2.79 $1.85 
(1) Interest expense has been tax effected at a rate of 21%.

All of our outstanding 9% Debentures were reflected in diluted earnings per share using the “if-converted” method. Under this method, if dilutive, the common stock related to the outstanding 9% Debentures is assumed issued as of the beginning of the reporting period and the related interest expense, net of tax, is added back to earnings in calculating diluted EPS. In the third quarter of 2023, under the terms of our 9% Debentures, we exercised our option to redeem the outstanding principal. (See Note 7 - "Debt".)