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Equity And Earnings Per Share (Basic Table) (Details) - USD ($)
$ / shares in Units, $ in Millions
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Basic earnings per share:      
Net income available for common stockholders $ 308 $ 195 $ 161
Weighted average shares of common stock outstanding:      
Weighted Average Number of Shares Outstanding, Basic 94,167,572 79,939,289 76,121,570
Basic earnings per share $ 3.27 $ 2.44 $ 2.11
Common Class A [Member]      
Weighted average shares of common stock outstanding:      
Weighted Average Number of Shares Outstanding, Basic 94,167,472 79,939,189 76,121,470
Common Class B [Member]      
Weighted average shares of common stock outstanding:      
Weighted Average Number of Shares Outstanding, Basic 100 100 100