CONDENSED CONSOLIDATED BALANCE SHEETS (unaudited) - USD ($) $ in Millions	Sep. 30, 2017	Dec. 31, 2016
Current assets:
Cash and cash equivalents	$ 69.3	$ 173.2
Accounts receivable, net	563.4	442.0
Inventory, net	1,184.1	1,113.9
Other current assets	115.6	94.6
Total current assets	1,932.4	1,823.7
Property, plant and equipment	6,745.3	6,569.0
Accumulated depreciation	(4,720.7)	(4,554.6)
Property, plant and equipment, net	2,024.6	2,014.4
Goodwill and intangible assets	312.8	32.8
Other non-current assets	189.5	165.1
TOTAL ASSETS	4,459.3	4,036.0
Current liabilities:
Accounts payable	718.0	589.9
Accrued liabilities	245.1	234.1
Current portion of pension and other postretirement benefit obligations	41.3	41.3
Total current liabilities	1,004.4	865.3
Non-current liabilities:
Long-term debt	2,098.2	1,816.6
Pension and other postretirement benefit obligations	1,011.8	1,093.7
Other non-current liabilities	168.4	148.4
TOTAL LIABILITIES	4,282.8	3,924.0
EXCHANGEABLE NOTES EXCHANGE FEATURE	0.0	21.3
Equity:
Common stock, authorized 450,000,000 shares of $0.01 par value each; issued 315,745,678 and 314,739,500 shares in 2017 and 2016; outstanding 314,848,092 and 314,160,557 shares in 2017 and 2016	3.2	3.1
Additional paid-in capital	2,883.7	2,855.4
Treasury stock, common shares at cost, 897,586 and 578,943 shares in 2017 and 2016	(5.4)	(2.4)
Accumulated deficit	(2,946.9)	(3,064.8)
Accumulated other comprehensive loss	(111.3)	(63.5)
Total stockholders’ equity (deficit)	(176.7)	(272.2)
Noncontrolling interests	353.2	362.9
TOTAL EQUITY	176.5	90.7
TOTAL LIABILITIES AND EQUITY	4,459.3	4,036.0
SunCoke Middletown [Member] | Variable Interest Entity, Primary Beneficiary [Member]
Current assets:
Cash and cash equivalents	4.5	5.0
Inventory, net	18.9	16.2
Property, plant and equipment	424.1	422.3
Accumulated depreciation	(84.8)	(72.5)
Current liabilities:
Accounts payable	11.2	7.8
Other assets (liabilities), net	(0.1)	(2.3)
Equity:
Noncontrolling interests	351.4	360.9
Other Variable Interest Entities [Member] | Variable Interest Entity, Primary Beneficiary [Member]
Current assets:
Cash and cash equivalents	0.6	0.8
Property, plant and equipment	11.8	11.8
Accumulated depreciation	(9.6)	(9.5)
Current liabilities:
Other assets (liabilities), net	0.9	1.0
Equity:
Noncontrolling interests	$ 1.8	$ 2.0