Partners' Capital, Equity and Incentive Compensation Plans - Additional Information (Details) $ / shares in Units, $ in Millions		1 Months Ended	6 Months Ended
	Oct. 13, 2013 Vote	Mar. 31, 2019	Jun. 30, 2021 USD ($) class shares	Jun. 07, 2021 $ / shares	Dec. 31, 2020 shares
Partners Capital And Distributions [Line Items]
Options outstanding (in shares)			100,000
Equity based compensation expense unrecognized | $			$ 43.8
Equity based compensation expense vesting period			9 months
QualityTech, LP
Partners Capital And Distributions [Line Items]
Merger agreement, acquisition price (in dollars per share) | $ / shares				$ 78
Class O Units and Options
Partners Capital And Distributions [Line Items]
Equity based compensation awards intrinsic value | $			$ 79.0
First portion | Performance-Based FFO Units
Partners Capital And Distributions [Line Items]
Vesting period		2 years
Second portion | Performance-Based FFO Units
Partners Capital And Distributions [Line Items]
Vesting period		3 years
Second portion | Restricted Class A Common Stock
Partners Capital And Distributions [Line Items]
Vesting percentage, per quarter			8.375%
Vesting percentage			33.00%
2013 Equity Incentive Plan | Performance-Based FFO Units
Partners Capital And Distributions [Line Items]
Options outstanding (in shares)			237,669		132,267
2013 Equity Incentive Plan | Performance-Based Relative TSR Units
Partners Capital And Distributions [Line Items]
Options outstanding (in shares)			273,954		168,552
QualityTech, LP
Partners Capital And Distributions [Line Items]
Number of classes of partnership units outstanding | class			4
Class B Common Stock
Partners Capital And Distributions [Line Items]
Number of votes per share | Vote	50
Class B Common Stock | Chief Executive Officer
Partners Capital And Distributions [Line Items]
Percentage of operating partnership unit exchanged	2.00%
Class A Common Stock | Performance-Based FFO Units | Minimum
Partners Capital And Distributions [Line Items]
Percentage of target award		0.00%
Class A Common Stock | Performance-Based FFO Units | Maximum
Partners Capital And Distributions [Line Items]
Percentage of target award		200.00%
Class A Common Stock | Performance-Based Relative TSR Units
Partners Capital And Distributions [Line Items]
Performance period			3 years
Class A Common Stock | Performance-Based Relative TSR Units | Minimum
Partners Capital And Distributions [Line Items]
Percentage of target award		0.00%
Class A Common Stock | Performance-Based Relative TSR Units | Maximum
Partners Capital And Distributions [Line Items]
Percentage of target award		200.00%
Class A Common Stock | 2013 Equity Incentive Plan
Partners Capital And Distributions [Line Items]
Authorized shares to be issued under the plan			7,900,000
Preferred Units Series A [Member] | QualityTech, LP
Partners Capital And Distributions [Line Items]
Exchange rate for cash or shares			1