Document and Entity Information - shares	3 Months Ended
	Mar. 31, 2020	May 01, 2020
Document Information [Line Items]
Entity Registrant Name	SPIRIT REALTY CAPITAL, INC.
Entity Central Index Key	0001308606
Entity Current Reporting Status	Yes
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Document Type	10-Q
Document Period End Date	Mar. 31, 2020
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	Q1
Amendment Flag	false
Entity Emerging Growth Company	false
Entity Small Business	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		102,939,952
Entity File Number	001-36004
Entity Tax Identification Number	20-1676382
Entity Incorporation, State or Country Code	MD
Entity Address, Address Line One	2727 North Harwood Street
Entity Address, Address Line Two	Suite 300
Entity Address, City or Town	Dallas
Entity Address, State or Province	TX
Entity Address, Postal Zip Code	75201
City Area Code	972
Local Phone Number	476-1900
Document Quarterly Report	true
Document Transition Report	false
Entity Interactive Data Current	Yes
Common Stock
Document Information [Line Items]
Trading Symbol	SRC
Title of 12(b) Security	Common stock, par value $0.05 per share
Security Exchange Name	NYSE
6.000% Series A Cumulative Redeemable Preferred Stock
Document Information [Line Items]
Trading Symbol	SRC-A
Title of 12(b) Security	6.000% Series A Cumulative Redeemable Preferred Stock, par value $0.01 per share
Security Exchange Name	NYSE
Spirit Realty, L.P.
Document Information [Line Items]
Entity Registrant Name	SPIRIT REALTY, L.P.
Entity Current Reporting Status	Yes
Current Fiscal Year End Date	--12-31
Entity Filer Category	Non-accelerated Filer
Document Type	10-Q
Document Period End Date	Mar. 31, 2020
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	Q1
Amendment Flag	false
Entity Emerging Growth Company	false
Entity Small Business	false
Entity Shell Company	false
Entity File Number	333-216815-01
Entity Tax Identification Number	20-1127940
Entity Incorporation, State or Country Code	DE
Entity Interactive Data Current	Yes