CONDENSED CONSOLIDATED BALANCE SHEETS (unaudited) - USD ($) $ in Millions	Sep. 30, 2016	Dec. 31, 2015
Current assets:
Cash and cash equivalents	$ 57.5	$ 56.6
Accounts receivable, net	489.0	444.9
Inventory, net	1,088.4	1,226.3
Other current assets	66.1	78.4
Total current assets	1,701.0	1,806.2
Property, plant and equipment	6,565.3	6,466.0
Accumulated depreciation	(4,537.7)	(4,379.5)
Property, plant and equipment, net	2,027.6	2,086.5
Other non-current assets	192.2	191.7
TOTAL ASSETS	3,920.8	4,084.4
Current liabilities:
Accounts payable	639.5	703.4
Accrued liabilities	248.7	261.5
Current portion of pension and other postretirement benefit obligations	46.2	77.7
Total current liabilities	934.4	1,042.6
Non-current liabilities:
Long-term debt	2,000.2	2,354.1
Pension and other postretirement benefit obligations	1,131.0	1,146.9
Other non-current liabilities	130.4	136.4
TOTAL LIABILITIES	4,196.0	4,680.0
Equity (deficit):
Common stock, authorized 450,000,000 shares of $0.01 par value each; issued 238,841,983 and 178,284,137 shares in 2016 and 2015; outstanding 238,269,413 and 177,893,562 shares in 2016 and 2015	2.4	1.8
Additional paid-in capital	2,520.0	2,266.8
Treasury stock, common shares at cost, 572,570 and 390,575 shares in 2016 and 2015	(2.4)	(2.0)
Accumulated deficit	(3,002.4)	(3,057.0)
Accumulated other comprehensive loss	(164.2)	(187.2)
Total stockholders' equity (deficit)	(646.6)	(977.6)
Noncontrolling interests	371.4	382.0
TOTAL EQUITY (DEFICIT)	(275.2)	(595.6)
TOTAL LIABILITIES AND EQUITY (DEFICIT)	3,920.8	4,084.4
Variable Interest Entity, Primary Beneficiary [Member] | SunCoke Middletown [Member]
Current assets:
Cash and cash equivalents	12.2	7.6
Inventory, net	17.2	19.8
Property, plant and equipment	421.6	421.5
Accumulated depreciation	(68.6)	(57.6)
Other Assets (Liabilities), Net	(1.7)	(0.5)
Current liabilities:
Accounts payable	11.3	10.8
Equity (deficit):
Noncontrolling interests	369.4	380.0
Variable Interest Entity, Primary Beneficiary [Member] | Other Variable Interest Entities [Member]
Current assets:
Cash and cash equivalents	1.1	1.1
Property, plant and equipment	11.7	11.5
Accumulated depreciation	(9.5)	(9.4)
Other Assets (Liabilities), Net	1.0	0.9
Equity (deficit):
Noncontrolling interests	$ 2.0	$ 2.0