Consolidated Balance Sheets (Parenthetical) - $ / shares
Mar. 31, 2018
Dec. 31, 2017
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) $ 0.01 $ 0.01
Common stock, shares authorized 750,000,000 750,000,000
Common stock, shares issued 436,561,654 448,868,269
Common stock, shares outstanding 436,561,654 448,868,269
Spirit Realty, L.P.    
Partnership units    
General partners' capital, units issued 3,988,218 3,988,218
General partners' capital, units outstanding 3,988,218 3,988,218
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 432,573,436 444,880,051
Limited partners' capital, units outstanding 432,573,436 444,880,051