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Real Estate - Summary of Consideration Transferred (Details) - Mergers $ / shares in Units, $ in Thousands	Mar. 01, 2021 USD ($) $ / shares shares
Real Estate [Line Items]
CCIT II's common stock shares prior to conversion (shares)	67,139,129
Exchange ratio	1.392
Implied GCEAR common stock issued as consideration (shares)	93,457,668
GCEAR's Class E NAV per share (USD per share) | $ / shares	$ 8.97
Total consideration | $	$ 838,315

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