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Equity And Earnings Per Share (Diluted Table) (Details) - USD ($)
$ / shares in Units, $ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2023
Jun. 30, 2022
Jun. 30, 2023
Jun. 30, 2022
Diluted earnings per share:        
Net income available for common stockholders $ 125 $ 72 $ 273 $ 145
Weighted Average Shares Outstanding [Abstract]        
Weighted Average Number of Shares Outstanding, Basic 103,587,557 98,853,981 103,274,846 98,541,798
Potentially dilutive common shares:        
Issuable pursuant to employee incentive plans 876,172 841,508 980,042 920,069
Weighted Average Number of Shares Outstanding, Diluted 104,463,729 99,695,489 104,254,888 99,461,867
Earnings Per Share, Diluted $ 1.20 $ 0.72 $ 2.62 $ 1.46
Common Class A [Member]        
Weighted Average Shares Outstanding [Abstract]        
Weighted Average Number of Shares Outstanding, Basic 103,587,457 98,853,881 103,274,746 98,541,698
Common Class B [Member]        
Weighted Average Shares Outstanding [Abstract]        
Weighted Average Number of Shares Outstanding, Basic 100 100 100 100