Loss Per Share and Equity - Distributions (Details) - $ / shares	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Common Class A
Distributions Per Share
Total distributions paid (usd per share)	$ 0.5640	$ 0.5640	$ 0.5578
Common Class A | Return of capital
Distributions Per Share
Total distributions paid (usd per share)	0.4679	0.4656	0.3541
Common Class A | Ordinary income
Distributions Per Share
Total distributions paid (usd per share)	0.0961	0.0984	0.2037
Common Class T
Distributions Per Share
Total distributions paid (usd per share)	0.4611	0.4624	0.4515
Common Class T | Return of capital
Distributions Per Share
Total distributions paid (usd per share)	0.3826	0.3817	0.2866
Common Class T | Ordinary income
Distributions Per Share
Total distributions paid (usd per share)	$ 0.0785	$ 0.0807	$ 0.1649