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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

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