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Equity And Earnings Per Share (Basic Table) (Details) - USD ($)
$ / shares in Units, $ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2021
Jun. 30, 2020
Basic earnings per share:        
Net income available for common stockholders $ 92 $ 32 $ 199 $ 78
Weighted average shares of common stock outstanding:        
Weighted Average Number of Shares Outstanding, Basic 91,365,234 77,357,609 91,078,868 77,054,388
Basic earnings per share $ 1.01 $ 0.41 $ 2.19 $ 1.01
Common Class A [Member]        
Weighted average shares of common stock outstanding:        
Weighted Average Number of Shares Outstanding, Basic 91,365,134 77,357,509 91,078,768 77,054,288
Common Class B [Member]        
Weighted average shares of common stock outstanding:        
Weighted Average Number of Shares Outstanding, Basic 100 100 100 100