General and Basis of Presentation (Details)					12 Months Ended
	Aug. 12, 2015	Jan. 13, 2015	May. 09, 2014	Mar. 18, 2013 T	Dec. 31, 2015 T Cokemaking_facility	May. 08, 2014
General (Textual) [Abstract]
Coke production experience, more than					50 years
Period that Suncoke constructed the only greenfield cokemaking facilities in the US					25 years
Coal Mining, proven and probable reserves (in tons)					109,000,000
Ownership interest of general partnership (as a percent)					2.00%
Interest in partnership (as a percent)	53.40%	56.10%	54.10%		53.90%	55.90%
Ownership percentage held by public unitholders	44.60%	41.90%	43.90%		44.10%
VISA SunCoke Limited
General (Textual) [Abstract]
Cokemaking facility capacity (in tons)				440,000	440,000
United States
General (Textual) [Abstract]
Number of cokemaking facilities | Cokemaking_facility					5
Cokemaking capacity (in tons)					4,200,000
Brazil
General (Textual) [Abstract]
Number of cokemaking facilities | Cokemaking_facility					1
Cokemaking capacity (in tons)					1,700,000
Convent, Louisiana, East Chicago, Indiana, West Virginia, and Kentucky
General (Textual) [Abstract]
Coal handling capacity (in tons), more than					40,000,000
Coal storage capacity					3,000,000