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Stockholders' Equity
 12 Months Ended
Dec. 31, 2022
Stockholders' Equity Note [Abstract]  
Stockholders' Equity Stockholders' Equity
The following table summarizes the changes in shares of Common Stock outstanding and Treasury Stock:
Common Stock OutstandingTreasury Stock
Balance at December 31, 2019170,448,943 152,888,969 
Issuance of treasury stock1,526,245 (1,526,245)
Balance at December 31, 2020171,975,188 151,362,724 
Issuance of treasury stock2,756,207 (2,756,207)
Balance at December 31, 2021174,731,395 148,606,517 
Repurchases of common stock(2,750,000)2,750,000 
Issuance of treasury stock2,049,192 (2,049,192)
Balance at December 31, 2022174,030,587 149,307,325 
At December 31, 2022, 35,385,343 shares were reserved for issuance under our stock plans and dividend reinvestment program.