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Capital Stock (Tables)
 12 Months Ended
Dec. 31, 2023
Class of Stock Disclosures [Abstract]  
Rollforward Of Common Stock Activity [Table Text Block]
The following is a roll forward of shares of common stock for the three years ended December 31, 2023, 2022 and 2021: 

  Common Stock
In thousandsIssuedTreasury
Balance at January 1, 2021448,916 55,817 
Issuance of stock for various plans, net— (1,855)
Repurchase of stock— 16,400 
Balance at December 31, 2021448,916 70,362 
Issuance of stock for various plans, net— (1,569)
Repurchase of stock— 29,839 
Balance at December 31, 2022448,916 98,632 
Issuance of stock for various plans, net— (1,647)
Repurchase of stock— 5,894 
Balance at December 31, 2023448,916 102,879