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Equity And Earnings Per Share (Diluted Table) (Details) - USD ($)
$ / shares in Units, $ in Millions
 3 Months Ended 9 Months Ended
Sep. 30, 2024
Sep. 30, 2023
Sep. 30, 2024
Sep. 30, 2023
Diluted earnings per share:        
Net income available for common stockholders $ 184 $ 167 $ 538 $ 440
Weighted Average Shares Outstanding [Abstract]        
Weighted Average Number of Shares Outstanding, Basic 108,757,991 106,233,557 107,852,597 104,271,921
Potentially dilutive common shares:        
Issuable pursuant to employee incentive plans 778,369 777,870 921,598 912,651
Weighted Average Number of Shares Outstanding, Diluted 109,536,360 107,011,427 108,774,195 105,184,572
Earnings Per Share, Diluted $ 1.67 $ 1.56 $ 4.94 $ 4.19
Common Class A [Member]        
Weighted Average Shares Outstanding [Abstract]        
Weighted Average Number of Shares Outstanding, Basic 108,757,891 106,233,457 107,852,497 104,271,821
Common Class B [Member]        
Weighted Average Shares Outstanding [Abstract]        
Weighted Average Number of Shares Outstanding, Basic 100 100 100 100