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Summary of Significant Accounting Policies (EPS) (Details) - USD ($) $ / shares in Units, $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Basic earnings per share: |  |  |
Net income attributable to common shareholders | $ 612 | $ 759 | $ 739
Net income available to common shareholders | $ 612 | $ 759 | $ 739
Weighted average common shares outstanding (in shares) | 381,000,000 | 380,000,000 | 373,000,000
Basic earnings per share (in dollars per share) | $ 1.61 | $ 2.00 | $ 1.98
Diluted earnings per share: |  |  |
Net income attributable to common shareholders | $ 612 | $ 759 | $ 739
Net income available to common shareholders | 612 | 759 | 739
Income impact of assumed conversions | 1 | 1 |
Net income available to common shareholders and assumed conversions | $ 613 | $ 760 | $ 739
Weighted average common shares outstanding (in shares) | 381,000,000 | 380,000,000 | 373,000,000
Incremental shares from assumed conversions (in shares) | 2,000,000 | 0 | 1,000,000
Adjusted weighted average shares - diluted (in shares) | 383,000,000 | 380,000,000 | 374,000,000
Diluted earnings per share (in dollars per share) | $ 1.60 | $ 2.00 | $ 1.98
Stock Compensation Plan |  |  |
Diluted earnings per share: |  |  |
Antidilutive awards excluded from earnings per share (in shares) | 5,839,549 | 10,239,501 | 9,066,753

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