Loss Per Share and Equity - Distribution Declared (Details) - $ / shares	3 Months Ended	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Common Class A
Class of Stock
Distributions declared per share (usd per share)	$ 0.1749	$ 0.6996	$ 0.6996	$ 0.6955
Common Class T
Class of Stock
Distributions declared per share (usd per share)	0.1493	$ 0.5968	$ 0.5959	$ 0.5919
Cash | Common Class A
Class of Stock
Distributions declared per share (usd per share)	0.141
Cash | Common Class T
Class of Stock
Distributions declared per share (usd per share)	0.1154
Shares | Common Class A
Class of Stock
Distributions declared per share (usd per share)	0.0339
Shares | Common Class T
Class of Stock
Distributions declared per share (usd per share)	$ 0.0339