CONDENSED CONSOLIDATED BALANCE SHEETS (unaudited) - USD ($) $ in Millions	Sep. 30, 2015	Dec. 31, 2014
Current assets:
Cash and cash equivalents	$ 90.0	$ 70.2
Accounts receivable, net	550.8	644.3
Inventory, net	1,141.2	1,172.1
Deferred tax assets, current	50.4	67.7
Other current assets	44.4	71.4
Total current assets	1,876.8	2,025.7
Property, plant and equipment	6,442.1	6,388.4
Accumulated depreciation	(4,340.9)	(4,175.2)
Property, plant and equipment, net	2,101.2	2,213.2
Other non-current assets:
Investments in affilates	77.4	388.7
Other non-current assets	194.9	230.9
TOTAL ASSETS	4,250.3	4,858.5
Current liabilities:
Accounts payable	762.3	803.1
Accrued liabilities	261.6	266.5
Current portion of pension and other postretirement benefit obligations	60.9	55.6
Total current liabilities	1,084.8	1,125.2
Non-current liabilities:
Long-term debt	2,386.3	2,452.5
Pension and other postretirement benefit obligations	1,130.7	1,225.3
Other non-current liabilities	133.2	132.5
TOTAL LIABILITIES	4,735.0	4,935.5
Equity (deficit):
Common stock, authorized 300,000,000 shares of $0.01 par value each; issued 178,237,942 and 177,362,600 shares in 2015 and 2014; outstanding 177,850,916 and 177,215,816 shares in 2015 and 2014	1.8	1.8
Additional paid-in capital	2,266.3	2,259.1
Treasury stock, common shares at cost, 387,026 and 146,784 shares in 2015 and 2014	(2.0)	(1.0)
Accumulated deficit	(2,911.6)	(2,548.0)
Accumulated other comprehensive loss	(232.6)	(204.4)
Total stockholders' equity (deficit)	(878.1)	(492.5)
Noncontrolling interests	393.4	415.5
TOTAL EQUITY (DEFICIT)	(484.7)	(77.0)
TOTAL LIABILITIES AND EQUITY (DEFICIT)	4,250.3	4,858.5
Variable Interest Entity, Primary Beneficiary [Member] | SunCoke Middletown [Member]
Current assets:
Cash and cash equivalents	15.9	18.2
Inventory, net	20.0	29.6
Property, plant and equipment	420.9	420.1
Accumulated depreciation	(54.0)	(43.3)
Other assets (liabilities), net	(0.2)	(0.3)
Current liabilities:
Accounts payable	11.1	10.6
Equity (deficit):
Noncontrolling interests	391.5	413.7
Variable Interest Entity, Primary Beneficiary [Member] | Other Variable Interest Entities [Member]
Current assets:
Cash and cash equivalents	0.9	1.0
Property, plant and equipment	11.5	11.4
Accumulated depreciation	(9.3)	(9.3)
Other assets (liabilities), net	0.9	0.6
Equity (deficit):
Noncontrolling interests	$ 1.9	$ 1.8