Consolidated Balance Sheets (Parenthetical) - $ / shares
Jun. 30, 2019
Dec. 31, 2018
Stockholders’ equity:    
Preferred stock, par value (in USD per share) $ 0.01 $ 0.01
Preferred stock, shares authorized 20,000,000 20,000,000
Preferred stock, shares issued 6,900,000 6,900,000
Preferred stock, shares outstanding 6,900,000 6,900,000
Common stock, par value per share (in USD per share) $ 0.05 $ 0.05
Common stock, shares authorized 175,000,000 175,000,000
Common stock, shares issued 90,110,727 85,787,355
Common stock, shares outstanding 90,110,727 85,787,355
Spirit Realty, L.P.    
Stockholders’ equity:    
General partners' capital, units issued 797,644 797,644
General partners' capital, units outstanding 797,644 797,644
Limited partners' preferred capital, units issued 6,900,000 6,900,000
Limited partners' preferred capital, units outstanding 6,900,000 6,900,000
Limited partners' capital, units issued 89,313,083 84,989,711
Limited partners' capital, units outstanding 89,313,083 84,989,711