v3.20.2

Internalization - Summary of Earnout Tranches, Applicable VWAP of REIT Share and AFFO Per Share, and Applicable Earnout Periods (Parenthetical) (Detail) | Feb. 07, 2020 $ / shares
--- | ---
Internalization [Line Items] |
Price per share or unit | $ 85
Merger Agreement |
Internalization [Line Items] |
Price per share or unit | $ 85.00

X
- Definition Internalization. + References No definition available. + Details
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Namespace Prefix: | ck1424182_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Price of a single share of a number of saleable stocks of a company. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | instant

X
- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |