XML 32 R22.htm IDEA: XBRL DOCUMENT v3.22.1
Organization and Summary of Significant Accounting Policies (Summary of NNN's Investment Portfolio) (Details)
 3 Months Ended
Mar. 31, 2022
ft²
Property Portfolio:  
Total properties 3,271
Gross leasable area (square feet) 33,545,000
States 48
Weighted average remaining lease term 10 years 7 months 6 days