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Capital Stock (Changes in Common Stock Outstanding) (Details) - shares
shares in Thousands
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Changes in Common Stock Outstanding [Roll Forward]      
Beginning Balance, January 1 180,392 180,354 180,140
Stock incentive plan net activity 437 716 986
Repurchase of common stock (576) (678) (772)
Ending Balance, December 31 180,253 180,392 180,354