CONDENSED CONSOLIDATED BALANCE SHEETS (unaudited) - USD ($) $ in Millions	Sep. 30, 2019	Dec. 31, 2018
Current assets:
Cash and cash equivalents	$ 30.8	$ 48.6
Accounts receivable, net	624.4	635.8
Inventory	1,362.7	1,419.9
Other current assets	48.3	97.0
Total current assets	2,066.2	2,201.3
Property, plant and equipment	7,094.0	6,969.2
Accumulated depreciation	(5,201.8)	(5,057.6)
Property, plant and equipment, net	1,892.2	1,911.6
Operating lease assets	253.4	0.0
Other non-current assets	392.8	402.8
TOTAL ASSETS	4,604.6	4,515.7
Current liabilities:
Accounts payable	676.0	801.0
Accrued liabilities	234.7	288.9
Current portion of operating lease liabilities	53.6	0.0
Current portion of pension and other postretirement benefit obligations	37.3	38.7
Total current liabilities	1,001.6	1,128.6
Non-current liabilities:
Long-term debt	1,969.7	1,993.7
Long-term operating lease liabilities	219.1	0.0
Pension and other postretirement benefit obligations	785.0	829.9
Other non-current liabilities	170.5	134.0
TOTAL LIABILITIES	4,145.9	4,086.2
Equity:
Common stock, authorized 450,000,000 shares of $0.01 par value each; issued 317,749,451 and 316,595,613 shares in 2019 and 2018; outstanding 316,382,722 and 315,535,765 shares in 2019 and 2018	3.2	3.2
Additional paid-in capital	2,902.7	2,894.9
Treasury stock, common shares at cost, 1,366,729 and 1,059,848 shares in 2019 and 2018	(7.3)	(6.4)
Accumulated deficit	(2,626.7)	(2,691.8)
Accumulated other comprehensive loss	(137.3)	(100.0)
Total stockholders’ equity	134.6	99.9
Noncontrolling interests	324.1	329.6
TOTAL EQUITY	458.7	429.5
TOTAL LIABILITIES AND EQUITY	4,604.6	4,515.7
SunCoke Middletown [Member] | Variable Interest Entity, Primary Beneficiary [Member]
Current assets:
Cash and cash equivalents	1.2	1.1
Inventory	24.9	21.1
Property, plant and equipment	432.9	427.8
Accumulated depreciation	(122.9)	(106.9)
Current liabilities:
Accounts payable	14.2	13.7
Other assets (liabilities), net	1.3	(1.2)
Equity:
Noncontrolling interests	323.2	328.2
Other Variable Interest Entities [Member] | Variable Interest Entity, Primary Beneficiary [Member]
Current assets:
Cash and cash equivalents	0.1	0.5
Property, plant and equipment	11.7	11.7
Accumulated depreciation	(10.0)	(9.8)
Current liabilities:
Other assets (liabilities), net	0.2	0.5
Equity:
Noncontrolling interests	$ 0.9	$ 1.4