v3.20.2
Acquisitions of Rental Property - Additional Information - (Detail) - Property
Jun. 30, 2020
Jun. 30, 2019
Business Combinations [Abstract]
Number of rental properties acquired
0
34
X
- Definition
The number of rental properties acquired.
+ References
No definition available.
+ Details
Name:
ck1424182_NumberOfRentalPropertiesAcquired
Namespace Prefix:
ck1424182_
Data Type:
xbrli:integerItemType
Balance Type:
na
Period Type:
instant
X
- References
No definition available.
+ Details
Name:
us-gaap_BusinessCombinationsAbstract
Namespace Prefix:
us-gaap_
Data Type:
xbrli:stringItemType
Balance Type:
na
Period Type:
duration