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Earnings Per Share (Narrative) (Details) $ / shares in Units, $ in Millions | 12 Months Ended
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Dec. 31, 2022 USD ($) $ / shares shares | Dec. 31, 2021 USD ($) 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, 2022 and December 31, 2021) | $ | $ 838 | $ 838
Preferred Stock, Convertible, Initial Conversion Rate | $ 31.5428 |
Preferred Stock, Convertible, Conversion Price | $ 31.66 |
Equity Unit, Shares Issued | shares | 10,430,500 |
Corporate Equity Unit, Stated Value Per Share | $ 100 |
Preferred Stock, Beneficial Ownership Interest in One Share | 0.10 |
Preferred stock, convertible, Final Conversion Rate | $ 31.5846 |
Preferred Stock, Convertible, Initial Conversion Price | $ 31.70 |
Share-based Payment Arrangement |  |
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] |  |
Antidilutive securities excluded from computation of earnings per share | shares | 5,000,000 |
Weighted Average Number Antidilutive Securities Excluded from Computation of EPS | shares | 3,000,000 | 4,000,000
Equity Unit Purchase Agreements |  |
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] |  |
Antidilutive securities excluded from computation of earnings per share | shares | 40,000,000 | 33,000,000

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