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Earnings Per Share (Narrative) (Details) $ / shares in Units, $ in Millions | 12 Months Ended |  |  |
--- | --- | --- | --- | ---
Dec. 31, 2023 USD ($) shares | Dec. 31, 2022 shares | Dec. 31, 2024 USD ($) $ / shares shares | Feb. 05, 2024 $ / shares shares | Mar. 04, 2021 $ / shares
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] |  |  |  |  |
Corporate Unit, Notional Value | $ |  |  | $ 1,043 |  |
Preferred stock (without par value, 50,000,000 shares authorized; 1,043,050 issued and outstanding at December 31, 2023) | $ | $ 838 |  | $ 0 |  |
Preferred Stock, Convertible, Initial Conversion Rate | $ / shares |  |  | $ 31.5428 |  |
Equity Unit, Shares Issued |  |  | 10,430,500 |  |
Corporate Equity Unit, Stated Value Per Share | $ / shares |  |  | $ 100 |  |
Preferred Stock, Beneficial Ownership Interest in One Share |  |  | 0.10 |  |
Preferred Stock, Convertible, Initial Conversion Price | $ / shares |  |  | $ 31.70 |  |
Shares Issued, Price Per Share | $ / shares |  |  |  | $ 25.73 | $ 25.88
Forward Contract Indexed to Issuer's Equity, Settlement Rate | 3.864 |  |  | 3.8859 |
Share-based Payment Arrangement |  |  |  |  |
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] |  |  |  |  |
Antidilutive securities excluded from computation of earnings per share | 2,000,000 | 5,000,000 |  |  |
Weighted Average Number Antidilutive Securities Excluded from Computation of EPS |  | 3,000,000 |  |  |
Equity Unit Purchase Agreements |  |  |  |  |
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] |  |  |  |  |
Antidilutive securities excluded from computation of earnings per share |  | 40,000,000 |  |  |

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