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Earnings Per Share (Narrative) (Details) $ / shares in Units, $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2021 USD ($) $ / shares shares | Dec. 31, 2020 USD ($)
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, 2021) | $ | $ 825 | $ 0
Preferred Stock, Convertible, Initial Conversion Rate | $ / shares | $ 31.5428 |
Preferred Stock, Convertible, Conversion Price | $ / shares | $ 31.70 |
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 |
Share-based Payment Arrangement |  |
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] |  |
Antidilutive securities excluded from computation of earnings per share | 5,000,000 |
Weighted Average Number Antidilutive Securities Excluded from Computation of EPS | 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 | 40,000,000 |
Weighted Average Number Antidilutive Securities Excluded from Computation of EPS | 33,000,000 |

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- Definition Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=124432515&loc=d3e3550-109257 + Details
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