General (Details) (USD $)	0 Months Ended			12 Months Ended				12 Months Ended		0 Months Ended	12 Months Ended	0 Months Ended		12 Months Ended			0 Months Ended
	Jan. 24, 2013	Jan. 17, 2012	Jul. 26, 2011	Dec. 31, 2013 acquisition T	Dec. 31, 2012	Dec. 31, 2011	Jul. 18, 2011	Dec. 31, 2013 United States T Cokemaking_facility	Dec. 31, 2013 Brazil T Cokemaking_facility	Mar. 18, 2013 VISA SunCoke Limited T	Dec. 31, 2013 VISA SunCoke Limited T	Jan. 24, 2013 IPO	Jan. 24, 2013 IPO Public	Dec. 31, 2012 Interest Rate Swap IPO	Dec. 31, 2013 Haverhill and Granite City IPO	Jan. 24, 2013 Haverhill	Jan. 24, 2013 Term loans, bearing interest at variable rates, due 2018, net of original issue IPO	Jan. 23, 2013 Partnership notes, due 2020 IPO
General (Textual) [Abstract]
Number of cokemaking facilities								5	1
Cokemaking capacity (in tons)								4,200,000	1,700,000
Cokemaking facility capacity (in tons)										440,000	440,000
Number of acquisitions				2
Coal Handling Capacity				30,000,000
Coal Mining, proven and probable reserves (in tons)				111,000,000
Quantity of metallurgical coal sold (in tons)				1,500,000
Quantity of thermal sold (in tons)				100,000
Common stock held (as a percent)							100.00%
IPO of common stock (in shares)			13,340,000									13,500,000
Ownership of company (as a percent)			19.10%
Common shares outstanding (in shares)			56,660,000
Percentage of parent ownership (as a percent)			80.90%
Share of common stock received (in shares)		0.53046456
Related party balance settled in cash			$ 575,000,000
Proceeds from issuance of common units of SunCoke Energy Partners, L.P.				237,800,000	0	0						231,800,000
Ownership interest of general partnership (as a percent)												2.00%
Interest in partnership (as a percent)												55.90%	42.10%
Direct costs related to increase in ownership interest	24,700,000					200,000								6,000,000
Proceeds from Partnership offering used															67,000,000
Accrual for Sales Volume Discounts Payable Current				13,600,000	36,200,000											12,400,000
Repayments of long-term debt				225,000,000	3,300,000	1,600,000											225,000,000.0
Senior notes																		$ 150,000,000.0