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Shareholders' Equity - Narrative (Details) - USD ($) | Sep. 30, 2021 | Dec. 31, 2020
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Equity [Abstract] |  |
Common shares of beneficial interest reserved for future issuance | $ 550,000,000 |
Shares of beneficial interest, par value (in dollars per share) | $ 0.01 | $ 0.01

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- Definition Face amount or stated value per share of common stock. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(29)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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- Definition Common Stock, Capital Shares Reserved for Future Issuances, Value + References No definition available. + Details
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