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Weighted Average Shares Outstanding (Details) - USD ($) shares in Thousands, $ in Millions | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2021 | Jun. 30, 2020 | Jun. 30, 2021 | Jun. 30, 2020 | Dec. 14, 2020
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] |  |  |  |  |
Weighted Average Number of Shares Outstanding, Basic | 1,421,300 | 1,410,900 | 1,420,000 | 1,404,100 |
Weighted Average Number Diluted Shares Outstanding Adjustment | 11,200 | 0 | 11,700 | 0 |
Weighted Average Number of Shares Outstanding, Diluted | 1,432,500 | 1,410,900 | 1,431,700 | 1,404,100 |
Shares Issued, Shares, Share-based Payment Arrangement, after Forfeiture | 1,000 |  | 5,000 |  |
Stock Repurchase Program, Authorized Amount |  |  |  |  | $ 1,000
Share-based Payment Arrangement, Option |  |  |  |  |
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] |  |  |  |  |
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount | 3,000 | 6,000 | 6,000 | 6,000 |
5.50% MCPS, Series A [Member] |  |  |  |  |
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] |  |  |  |  |
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount | 24,000 | 9,000 | 24,000 | 5,000 |
Share-based Payment Arrangement |  |  |  |  |
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] |  |  |  |  |
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount | 0 | 13,000 | 0 | 14,000 |

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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=6371337&loc=d3e3550-109257 + Details
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