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Document and Entity Information
Apr. 28, 2021
Cover [Abstract]  
Amendment Flag false
Entity Central Index Key 0001514705
Document Type 8-K
Document Period End Date Apr. 28, 2021
Entity Registrant Name SUNCOKE ENERGY, INC.
Entity Incorporation State Country Code DE
Entity File Number 001-35243
Entity Tax Identification Number 90-0640593
Entity Address, Address Line One 1011 Warrenville Road
Entity Address, Address Line Two Suite 600
Entity Address, City or Town Lisle
Entity Address, State or Province IL
Entity Address, Postal Zip Code 60532
City Area Code (630)
Local Phone Number 824-1000
Written Communications false
Soliciting Material false
Pre Commencement Tender Offer false
Pre Commencement Issuer Tender Offer false
Security 12b Title Common Stock, $0.01 par value
Trading Symbol SXC
Security Exchange Name NYSE
Entity Emerging Growth Company false