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Equity And Earnings Per Share (Diluted Table) (Details) - USD ($)
$ / shares in Units, $ in Millions
 3 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Diluted earnings per share:    
Net income available for common stockholders $ 213 $ 175
Weighted Average Shares Outstanding [Abstract]    
Weighted Average Number of Shares Outstanding, Basic 108,923,381 107,070,830
Potentially dilutive common shares:    
Issuable pursuant to employee incentive plans 942,360 1,078,610
Weighted Average Number of Shares Outstanding, Diluted 109,865,741 108,149,440
Earnings Per Share, Diluted $ 1.94 $ 1.61
Common Class A [Member]    
Weighted Average Shares Outstanding [Abstract]    
Weighted Average Number of Shares Outstanding, Basic 108,923,281 107,070,730
Common Class B [Member]    
Weighted Average Shares Outstanding [Abstract]    
Weighted Average Number of Shares Outstanding, Basic 100 100