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Financing Activities - Distributions (Details) - $ / shares | 1 Months Ended | 3 Months Ended | 9 Months Ended
--- | --- | --- | ---
Aug. 31, 2019 | Sep. 30, 2019 | Sep. 30, 2018 | Sep. 30, 2019 | Sep. 30, 2018
Distributions (Numeric) [Abstract] |  |  |  |  |
Current quarterly common stock dividend (in dollars per share) | $ 0.4125 | $ 0.4125 | $ 0.4100 | $ 1.2375 | $ 1.23
Annualized current quarterly common stock dividend (in dollars per share) | $ 1.65 |  |  |  |

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- Definition The per annum equivalent of the increased quarterly stock dividend the last time the dividend was changed. + References No definition available. + Details
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- Definition Aggregate dividends declared 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=27012166&loc=d3e187085-122770 + Details
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