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Shareholders' Equity, Noncontrolling Interests and Other Comprehensive Loss - Common Shares and Units - Additional Information (Details) - USD ($) $ in Millions	9 Months Ended		12 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019
Restricted shares
Class Of Stock [Line Items]
Restricted stock, shares canceled for tax withholding for share based compensation (in shares)	2,075		2,468
LTIP Units and Restricted Stock
Class Of Stock [Line Items]
Unit based compensation expense	$ 6.3	$ 5.4	$ 8.8

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- Definition

Long term incentive and share based compensation expense.

+ References

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- Definition

Restricted stock, shares canceled for tax withholding for share based compensation.

+ References

No definition available.

+ Details

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Details

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- Details

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