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Equity And Earnings Per Share (Diluted Table) (Details) - USD ($) $ / shares in Units, $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Diluted earnings per share: |  |  |
Net income available for common stockholders | $ 600 | $ 380 | $ 308
Weighted Average Shares Outstanding [Abstract] |  |  |
Weighted Average Number of Shares Outstanding, Basic | 104,965,050 | 100,460,016 | 94,167,572
Potentially dilutive common shares: |  |  |
Issuable pursuant to employee incentive plans | 881,827 | 839,593 | 842,308
Weighted Average Number of Shares Outstanding, Diluted | 105,846,877 | 101,299,609 | 95,009,880
Earnings Per Share, Diluted | $ 5.67 | $ 3.75 | $ 3.24
Common Class A [Member] |  |  |
Weighted Average Shares Outstanding [Abstract] |  |  |
Weighted Average Number of Shares Outstanding, Basic | 104,964,950 | 100,459,916 | 94,167,472
Common Class B [Member] |  |  |
Weighted Average Shares Outstanding [Abstract] |  |  |
Weighted Average Number of Shares Outstanding, Basic | 100 | 100 | 100

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