Cover - shares	9 Months Ended
	Sep. 30, 2021	Nov. 04, 2021
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Sep. 30, 2021
Document Transition Report	false
Entity File Number	001-33784
Entity Registrant Name	SANDRIDGE ENERGY, INC.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	20-8084793
Entity Address, Address Line One	1 E. Sheridan Ave, Suite 500
Entity Address, City or Town	Oklahoma City
Entity Address, State or Province	OK
Entity Address, Postal Zip Code	73104
City Area Code	405
Local Phone Number	429-5500
Title of 12(b) Security	Common Stock, $.001 par value
Trading Symbol	SD
Security Exchange Name	NYSE
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Bankruptcy Proceedings, Reporting Current	true
Entity Common Stock, Shares Outstanding		36,674,454
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	Q3
Amendment Flag	false
Entity Central Index Key	0001349436
Current Fiscal Year End Date	--12-31