CONDENSED CONSOLIDATED BALANCE SHEETS (unaudited) - USD ($) $ in Millions	Jun. 30, 2019	Dec. 31, 2018
Current assets:
Cash and cash equivalents	$ 42.2	$ 48.6
Accounts receivable, net	675.2	635.8
Inventory	1,353.9	1,419.9
Other current assets	88.9	97.0
Total current assets	2,160.2	2,201.3
Property, plant and equipment	7,034.5	6,969.2
Accumulated depreciation	(5,155.3)	(5,057.6)
Property, plant and equipment, net	1,879.2	1,911.6
Operating lease assets	245.7	0.0
Other non-current assets	401.9	402.8
TOTAL ASSETS	4,687.0	4,515.7
Current liabilities:
Accounts payable	732.3	801.0
Accrued liabilities	242.9	288.9
Current portion of operating lease liabilities	53.9	0.0
Current portion of pension and other postretirement benefit obligations	37.8	38.7
Total current liabilities	1,066.9	1,128.6
Non-current liabilities:
Long-term debt	1,946.2	1,993.7
Long-term operating lease liabilities	212.9	0.0
Pension and other postretirement benefit obligations	808.0	829.9
Other non-current liabilities	177.4	134.0
TOTAL LIABILITIES	4,211.4	4,086.2
Equity:
Common stock, authorized 450,000,000 shares of $0.01 par value each; issued 317,705,839 and 316,595,613 shares in 2019 and 2018; outstanding 316,342,354 and 315,535,765 shares in 2019 and 2018	3.2	3.2
Additional paid-in capital	2,901.0	2,894.9
Treasury stock, common shares at cost, 1,363,485 and 1,059,848 shares in 2019 and 2018	(7.2)	(6.4)
Accumulated deficit	(2,629.5)	(2,691.8)
Accumulated other comprehensive loss	(131.9)	(100.0)
Total stockholders’ equity	135.6	99.9
Noncontrolling interests	340.0	329.6
TOTAL EQUITY	475.6	429.5
TOTAL LIABILITIES AND EQUITY	4,687.0	4,515.7
SunCoke Middletown [Member] | Variable Interest Entity, Primary Beneficiary [Member]
Current assets:
Cash and cash equivalents	0.1	1.1
Accounts receivable, net	20.0	0.5
Inventory	25.6	21.1
Property, plant and equipment	428.7	427.8
Accumulated depreciation	(118.6)	(106.9)
Current liabilities:
Accounts payable	16.8	13.7
Other assets (liabilities), net	0.0	(1.7)
Equity:
Noncontrolling interests	339.0	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	(9.9)	(9.8)
Current liabilities:
Other assets (liabilities), net	0.1	0.5
Equity:
Noncontrolling interests	$ 1.0	$ 1.4