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CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) (Parenthetical) - $ / shares
Jun. 30, 2022
Dec. 31, 2021
Statement of Financial Position [Abstract]    
Common shares of beneficial interest, par value (in dollars per share) $ 0.01 $ 0.01
Common shares of beneficial interest, shares authorized (in shares) 300,000,000 300,000,000
Common shares of beneficial interest, shares issued (in shares) 239,123,496 238,994,894
Beginning balance (in shares) 239,123,496 238,994,894