Noncontrolling Interests - Narrative (Details)	12 Months Ended
	Dec. 31, 2021 shares
Noncontrolling Interest [Line Items]
Percentage of noncontrolling interest based on weighted average shares (percent)	9.20%
Units issued related to property contributions (shares)	31,800,000
Units issued to unaffiliated third parties (shares)	200,000
Partnership unite exchange (shares)	1
Griffin Capital Essential Asset Operating Partnership, L.P.
Noncontrolling Interest [Line Items]
Percentage of noncontrolling interests based on total shares (percent)	9.00%