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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, 2022
Jun. 30, 2021
Jun. 30, 2022
Jun. 30, 2021
Diluted earnings per share:        
Net income available for common stockholders $ 72 $ 92 $ 145 $ 199
Weighted Average Shares Outstanding [Abstract]        
Weighted Average Number of Shares Outstanding, Basic 98,853,981 91,365,234 98,541,798 91,078,868
Potentially dilutive common shares:        
Issuable pursuant to employee incentive plans 841,508 833,935 920,069 905,378
Weighted Average Number of Shares Outstanding, Diluted 99,695,489 92,199,169 99,461,867 91,984,246
Earnings Per Share, Diluted $ 0.72 $ 1.00 $ 1.46 $ 2.17
Common Class A [Member]        
Weighted Average Shares Outstanding [Abstract]        
Weighted Average Number of Shares Outstanding, Basic 98,853,881 91,365,134 98,541,698 91,078,768
Common Class B [Member]        
Weighted Average Shares Outstanding [Abstract]        
Weighted Average Number of Shares Outstanding, Basic 100 100 100 100