CONSOLIDATED BALANCE SHEETS - USD ($) $ in Millions	Dec. 31, 2015	Dec. 31, 2014
Current assets:
Cash and cash equivalents	$ 56.6	$ 70.2
Accounts receivable, net	444.9	644.3
Inventory, net	1,226.3	1,172.1
Other current assets	78.4	71.4
Total current assets	1,806.2	1,958.0
Property, plant and equipment	6,466.0	6,388.4
Accumulated depreciation	(4,379.5)	(4,175.2)
Property, plant and equipment, net	2,086.5	2,213.2
Other non-current assets:
Investments in affiliates	70.7	388.7
Other non-current assets	121.0	268.1
TOTAL ASSETS	4,084.4	4,828.0
Current liabilities:
Accounts payable	703.4	803.1
Accrued liabilities	261.5	266.5
Current portion of pension and other postretirement benefit obligations	77.7	55.6
Total current liabilities	1,042.6	1,125.2
Non-current liabilities:
Long-term debt	2,354.1	2,422.0
Pension and other postretirement benefit obligations	1,146.9	1,225.3
Other non-current liabilities	136.4	132.5
TOTAL LIABILITIES	4,680.0	4,905.0
Equity (deficit):
Common stock, authorized 300,000,000 shares of $.01 par value each; issued 178,284,137 and 177,362,600 shares in 2015 and 2014; outstanding 177,893,562 and 177,215,816 shares in 2015 and 2014	1.8	1.8
Additional paid-in capital	2,266.8	2,259.1
Treasury stock, common shares at cost, 390,575 and 146,784 shares in 2015 and 2014	(2.0)	(1.0)
Accumulated deficit	(3,057.0)	(2,548.0)
Accumulated other comprehensive loss	(187.2)	(204.4)
Total stockholders' equity (deficit)	(977.6)	(492.5)
Noncontrolling interests	382.0	415.5
TOTAL EQUITY (DEFICIT)	(595.6)	(77.0)
TOTAL LIABILITIES AND EQUITY (DEFICIT)	4,084.4	4,828.0
Variable Interest Entity, Primary Beneficiary [Member] | SunCoke Middletown [Member]
Current assets:
Cash and cash equivalents	7.6	18.2
Inventory, net	19.8	29.6
Property, plant and equipment	421.5	420.1
Accumulated depreciation	(57.6)	(43.3)
Other assets (liabilities), net	(0.5)	(0.3)
Current liabilities:
Accounts payable	10.8	10.6
Equity (deficit):
Noncontrolling interests	380.0	413.7
Variable Interest Entity, Primary Beneficiary [Member] | Other Variable Interest Entities [Member]
Current assets:
Cash and cash equivalents	1.1	1.0
Property, plant and equipment	11.5	11.4
Accumulated depreciation	(9.4)	(9.3)
Other assets (liabilities), net	0.9	0.6
Equity (deficit):
Noncontrolling interests	$ 2.0	$ 1.8