Shareholders' Equity - Narrative (Details) - USD ($) |
Sep. 30, 2021 |
Dec. 31, 2020 |
|---|---|---|
| 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 |
| X | ||||||||||
- Definition Face amount or stated value per share of common stock. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- References No definition available.
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| X | ||||||||||
- Definition Common Stock, Capital Shares Reserved for Future Issuances, Value No definition available.
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