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Income Taxes - Schedule of Common Stock Distribution (Details) - $ / shares | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Dividends Payable [Line Items] |  |  |
Dividends (in dollars per share) | $ 1.4800 | $ 1.4800 | $ 1.4800
Qualified business income for purpose of Code Section 199A (in dollars per share) | 0.7139 | 0.7633 | 0.9414
Qualified dividend income for purposes of Code Section 1(h)(11) (in dollars per share) |  |  | 0.0164
Ordinary dividends |  |  |
Dividends Payable [Line Items] |  |  |
Dividends (in dollars per share) | 0.7139 | 0.7633 | 0.9578
Capital Gain Dividends |  |  |
Dividends Payable [Line Items] |  |  |
Dividends (in dollars per share) | 0.5298 | 0.2714 | 0.5222
Nondividend distributions |  |  |
Dividends Payable [Line Items] |  |  |
Dividends (in dollars per share) | $ 0.2363 | $ 0.4453 | $ 0

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- Definition The per share amount of a dividend declared, but not paid, as of the financial reporting date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=121583591&loc=d3e4304-108586 + Details
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