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Equity And Earnings Per Share (Diluted Table) (Details) - USD ($)
$ / shares in Units, $ in Millions
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Diluted earnings per share:      
Net income available for common stockholders $ 600 $ 380 $ 308
Weighted Average Shares Outstanding [Abstract]      
Weighted Average Number of Shares Outstanding, Basic 104,965,050 100,460,016 94,167,572
Potentially dilutive common shares:      
Issuable pursuant to employee incentive plans 881,827 839,593 842,308
Weighted Average Number of Shares Outstanding, Diluted 105,846,877 101,299,609 95,009,880
Earnings Per Share, Diluted $ 5.67 $ 3.75 $ 3.24
Common Class A [Member]      
Weighted Average Shares Outstanding [Abstract]      
Weighted Average Number of Shares Outstanding, Basic 104,964,950 100,459,916 94,167,472
Common Class B [Member]      
Weighted Average Shares Outstanding [Abstract]      
Weighted Average Number of Shares Outstanding, Basic 100 100 100