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Stockholders' Equity Tax Treatment of Dividends Paid (Details) - $ / shares | 3 Months Ended
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Dec. 31, 2021 | Sep. 30, 2021 | Jun. 30, 2021 | Mar. 31, 2021
Class of Stock [Line Items] |  |  |  |  |
Common Stock, Dividends, Per Share, Cash Paid |  | $ 1.47 | $ 1.33 | $ 1.33 | $ 1.33
Common Stock [Member] |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |
Payment Date |  | Dec. 31, 2021 | Sep. 30, 2021 | Jun. 30, 2021 | Mar. 31, 2021
Common Stock [Member] |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |
Non-Taxable Distribution |  | $ 0.603135 | $ 0.545694 | $ 0.545694 | $ 0.545694
Ordinary Taxable Dividend Per Share [Member] |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |
Common Stock, Dividends, Per Share, Cash Paid |  | 0.866865 | 0.784306 | 0.784306 | 0.784306
Qualified Taxable Dividend Per Share [Member] |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |
Common Stock, Dividends, Per Share, Cash Paid | [1] | 0.013617 | 0.012321 | 0.012321 | 0.012321
Long-Term Capital Gain Distribution Per Share [Member] |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |
Common Stock, Dividends, Per Share, Cash Paid |  | $ 0.853248 | $ 0.771985 | $ 0.771985 | $ 0.771985
[1] | Qualified taxable dividend and section 199A dividend amounts are included in ordinary taxable dividend amounts.

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- Definition Aggregate dividends paid during the period for each share of common stock outstanding. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=120397183&loc=d3e187085-122770 + Details
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