Business Description - Summary of Economic Ownership Interest (Detail) - Broadstone Net Lease, LLC |
Dec. 31, 2019 |
Dec. 31, 2018 |
Dec. 31, 2017 |
|---|---|---|---|
| Business Description [Line Items] | |||
| Percentage of shares owned by, Corporation | 93.70% | 92.70% | 92.40% |
| Percentage of shares owned by, non-controlling interest | 6.30% | 7.30% | 7.60% |
| Equity Method Investment, Ownership Percentage | 100.00% | 100.00% | 100.00% |