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Common Stockholders' Equity
 12 Months Ended
Dec. 31, 2024
Equity [Abstract]  
Common Stockholders' Equity Common Stockholders’ Equity
The weighted average number of shares used in the computation of net income per share was as follows:
(In thousands)202420232022
Basic399,734 406,500 415,278 
Diluted403,224 409,948 419,192 

Treasury shares have been excluded from average outstanding shares from the date of acquisition. The weighted average number of basic shares outstanding includes the impact of 17,659,297 common shares held in a grantor trust. The common shares held in the grantor trust are for delivery upon settlement of vested but mandatorily deferred restricted stock units ("RSUs"). Shares held by the grantor trust do not affect diluted shares outstanding since shares deliverable under vested RSUs were already included in diluted shares outstanding. The difference in calculating basic and diluted net income per share is attributable entirely to the dilutive effect of stock-based compensation plans. Changes in shares of common stock outstanding, net of treasury shares, are presented below. Shares of common stock issued and outstanding do not include shares related to unissued restricted stock units (including shares held in the grantor trust).
202420232022
Balance, beginning of year384,817,136 396,819,150397,756,323
Shares issued951,930 1,059,500 1,118,418
Shares repurchased(5,702,996)(13,061,514)(2,055,591)
Balance, end of year380,066,070 384,817,136396,819,150

The amount of dividends paid is dependent upon factors such as the receipt of dividends from our subsidiaries, our results of operations, cash flow, financial condition and business needs, the capital and surplus requirements of our subsidiaries, and applicable insurance regulations that limit the amount of dividends that may be paid by our regulated insurance subsidiaries.