Supplemental Condensed Consolidating Financial Information - Consolidating Balance Sheet (Details) - USD ($) $ in Millions | Sep. 30, 2015 | Dec. 31, 2014 | Sep. 30, 2014 | Dec. 31, 2013 |
Assets | | | | |
Cash and cash equivalents | $ 103.2 | $ 139 | $ 114.8 | $ 233.6 |
Receivables | 76.3 | 78.2 | | |
Inventories | 124.6 | 142.2 | | |
Income tax receivable | 11 | 6 | | |
Deferred income taxes | 18.5 | 26.4 | | |
Other current assets | 5 | 3.6 | | |
Advances to affiliate | 0 | 0 | | |
Total current assets | 338.6 | 395.4 | | |
Restricted cash | 22 | 0.5 | | |
Notes receivable from affiliate | 0 | 0 | | |
Investment in Brazilian cokemaking operations | 41 | 41 | | |
Equity method investment in VISA SunCoke Limited | 0 | 22.3 | | |
Properties, plants and equipment, net | 1,597.1 | 1,480 | | |
Goodwill | 72.5 | 11.6 | | |
Other intangible assets, net | 193.2 | 10.4 | | |
Deferred charges and other assets | 16 | 24.9 | | |
Investment in subsidiaries | 0 | 0 | | |
Total assets | 2,280.4 | 1,986.1 | 1,986.1 | |
Liabilities and Equity | | | | |
Advances from affiliate | 0 | 0 | | |
Accounts payable | 107.8 | 121.3 | | |
Accrued liabilities | 49.8 | 67.5 | | |
Current portion of long-term debt | 1.1 | 0 | | |
Interest payable | 9.1 | 19.9 | | |
Income taxes payable | 0 | 0 | | |
Total current liabilities | 167.8 | 208.7 | | |
Long-term debt | 998 | 633.5 | | |
Payable to affiliate | 0 | 0 | | |
Accrual for black lung benefits | 44.6 | 43.9 | | |
Retirement benefit liabilities | 31.4 | 33.6 | | |
Deferred income taxes | 380.4 | 321.9 | | |
Asset retirement obligations | 21.9 | 22.2 | | |
Other deferred credits and liabilities | 21.9 | 16.9 | | |
Total liabilities | 1,666 | 1,280.7 | | |
Equity | | | | |
Preferred stock, $0.01 par value. Authorized 50,000,000 shares; no issued shares at September 30, 2015 and December 31, 2014 | 0 | 0 | | |
Common stock, $0.01 par value. Authorized 300,000,000 shares; issued 71,460,681 and 71,251,529 shares at September 30, 2015 and December 31, 2014, respectively | 0.7 | 0.7 | | |
Treasury stock, 7,477,657 and 4,977,115 shares at September 30, 2015 and December 31, 2014, respectively | (140.7) | (105) | | |
Additional paid-in capital | 484.8 | 543.6 | | |
Accumulated other comprehensive loss | (19) | (21.5) | | |
Retained (deficit) earnings | (45.5) | 13.9 | | |
Total SunCoke Energy, Inc. stockholders’ equity | 280.3 | 431.7 | | |
Noncontrolling interests | 334.1 | 273.7 | | |
Total equity | 614.4 | 705.4 | | |
Total liabilities and equity | 2,280.4 | 1,986.1 | | |
Issuer | | | | |
Assets | | | | |
Cash and cash equivalents | 0 | 0 | 0 | 0 |
Receivables | 0 | 0.1 | | |
Inventories | 0 | 0 | | |
Income tax receivable | 17.9 | 28 | | |
Deferred income taxes | 0 | 2.6 | | |
Other current assets | $ 0 | 0 | | |
Advances to affiliate | | 0 | | |
Total current assets | $ 17.9 | 30.7 | | |
Restricted cash | 0 | 0 | | |
Notes receivable from affiliate | 0 | 0 | | |
Investment in Brazilian cokemaking operations | 0 | 0 | | |
Equity method investment in VISA SunCoke Limited | 0 | 0 | | |
Properties, plants and equipment, net | 0 | 0 | | |
Goodwill | 0 | 0 | | |
Other intangible assets, net | 0 | 0 | | |
Deferred charges and other assets | 0.2 | 0.3 | | |
Investment in subsidiaries | 508.3 | 718.2 | | |
Total assets | 526.4 | 749.2 | | |
Liabilities and Equity | | | | |
Advances from affiliate | 139.3 | 73.4 | | |
Accounts payable | 0 | 0 | | |
Accrued liabilities | 0.1 | 0.1 | | |
Current portion of long-term debt | 0 | | | |
Interest payable | 0.8 | 7.6 | | |
Income taxes payable | 0 | 0 | | |
Total current liabilities | 140.2 | 81.1 | | |
Long-term debt | 58.2 | 234.5 | | |
Payable to affiliate | 0 | 0 | | |
Accrual for black lung benefits | 0 | 0 | | |
Retirement benefit liabilities | 0 | 0 | | |
Deferred income taxes | 46.3 | 0 | | |
Asset retirement obligations | 0 | 0 | | |
Other deferred credits and liabilities | 1.4 | 1.9 | | |
Total liabilities | 246.1 | 317.5 | | |
Equity | | | | |
Preferred stock, $0.01 par value. Authorized 50,000,000 shares; no issued shares at September 30, 2015 and December 31, 2014 | 0 | 0 | | |
Common stock, $0.01 par value. Authorized 300,000,000 shares; issued 71,460,681 and 71,251,529 shares at September 30, 2015 and December 31, 2014, respectively | 0.7 | 0.7 | | |
Treasury stock, 7,477,657 and 4,977,115 shares at September 30, 2015 and December 31, 2014, respectively | (140.7) | (105) | | |
Additional paid-in capital | 484.8 | 543.6 | | |
Accumulated other comprehensive loss | (19) | (21.5) | | |
Retained (deficit) earnings | (45.5) | 13.9 | | |
Total SunCoke Energy, Inc. stockholders’ equity | 280.3 | 431.7 | | |
Noncontrolling interests | 0 | 0 | | |
Total equity | 280.3 | 431.7 | | |
Total liabilities and equity | 526.4 | 749.2 | | |
Guarantor Subsidiaries | | | | |
Assets | | | | |
Cash and cash equivalents | 15.7 | 102.4 | 82.2 | 184.6 |
Receivables | 10.6 | 20.3 | | |
Inventories | 12.3 | 17.8 | | |
Income tax receivable | 0 | 0 | | |
Deferred income taxes | 17.7 | 17.7 | | |
Other current assets | 3 | 2.7 | | |
Advances to affiliate | 242.9 | 99.1 | | |
Total current assets | 302.2 | 260 | | |
Restricted cash | 0.5 | 0.5 | | |
Notes receivable from affiliate | 89 | 89 | | |
Investment in Brazilian cokemaking operations | 0 | 0 | | |
Equity method investment in VISA SunCoke Limited | 0 | 0 | | |
Properties, plants and equipment, net | 80.5 | 88.1 | | |
Goodwill | 3.4 | 3.4 | | |
Other intangible assets, net | 3 | 3.5 | | |
Deferred charges and other assets | 13.6 | 18.5 | | |
Investment in subsidiaries | 664.6 | 760.1 | | |
Total assets | 1,156.8 | 1,223.1 | | |
Liabilities and Equity | | | | |
Advances from affiliate | 0 | 0 | | |
Accounts payable | 17.2 | 23.2 | | |
Accrued liabilities | 22.4 | 45.6 | | |
Current portion of long-term debt | 0 | | | |
Interest payable | 0 | 0 | | |
Income taxes payable | 13.2 | 18.9 | | |
Total current liabilities | 52.8 | 87.7 | | |
Long-term debt | 0 | 0 | | |
Payable to affiliate | 300 | 300 | | |
Accrual for black lung benefits | 44.6 | 43.9 | | |
Retirement benefit liabilities | 31.4 | 33.6 | | |
Deferred income taxes | 331.3 | 235.1 | | |
Asset retirement obligations | 13.7 | 14.3 | | |
Other deferred credits and liabilities | 11.2 | 13.6 | | |
Total liabilities | 785 | 728.2 | | |
Equity | | | | |
Preferred stock, $0.01 par value. Authorized 50,000,000 shares; no issued shares at September 30, 2015 and December 31, 2014 | 0 | 0 | | |
Common stock, $0.01 par value. Authorized 300,000,000 shares; issued 71,460,681 and 71,251,529 shares at September 30, 2015 and December 31, 2014, respectively | 0 | 0 | | |
Treasury stock, 7,477,657 and 4,977,115 shares at September 30, 2015 and December 31, 2014, respectively | 0 | 0 | | |
Additional paid-in capital | 19.2 | 161.4 | | |
Accumulated other comprehensive loss | (3.6) | (9.3) | | |
Retained (deficit) earnings | 356.2 | 342.8 | | |
Total SunCoke Energy, Inc. stockholders’ equity | 371.8 | 494.9 | | |
Noncontrolling interests | 0 | 0 | | |
Total equity | 371.8 | 494.9 | | |
Total liabilities and equity | 1,156.8 | 1,223.1 | | |
Non- Guarantor Subsidiaries | | | | |
Assets | | | | |
Cash and cash equivalents | 87.5 | 36.6 | 32.6 | 49 |
Receivables | 65.7 | 57.8 | | |
Inventories | 112.3 | 124.4 | | |
Income tax receivable | 6.3 | 0 | | |
Deferred income taxes | 0.8 | 8.7 | | |
Other current assets | 2 | 0.9 | | |
Advances to affiliate | 0 | 0 | | |
Total current assets | 274.6 | 228.4 | | |
Restricted cash | 21.5 | 0 | | |
Notes receivable from affiliate | 300 | 300 | | |
Investment in Brazilian cokemaking operations | 41 | 41 | | |
Equity method investment in VISA SunCoke Limited | 0 | 22.3 | | |
Properties, plants and equipment, net | 1,516.6 | 1,391.9 | | |
Goodwill | 69.1 | 8.2 | | |
Other intangible assets, net | 190.2 | 6.9 | | |
Deferred charges and other assets | 2.2 | 6.1 | | |
Investment in subsidiaries | 0 | 0 | | |
Total assets | 2,415.2 | 2,004.8 | | |
Liabilities and Equity | | | | |
Advances from affiliate | 103.6 | 25.7 | | |
Accounts payable | 90.6 | 98.1 | | |
Accrued liabilities | 27.3 | 21.8 | | |
Current portion of long-term debt | 1.1 | | | |
Interest payable | 8.3 | 12.3 | | |
Income taxes payable | 0 | 3.1 | | |
Total current liabilities | 230.9 | 161 | | |
Long-term debt | 939.8 | 399 | | |
Payable to affiliate | 89 | 89 | | |
Accrual for black lung benefits | 0 | 0 | | |
Retirement benefit liabilities | 0 | 0 | | |
Deferred income taxes | 2.8 | 89.4 | | |
Asset retirement obligations | 8.2 | 7.9 | | |
Other deferred credits and liabilities | 9.3 | 1.4 | | |
Total liabilities | 1,280 | 747.7 | | |
Equity | | | | |
Preferred stock, $0.01 par value. Authorized 50,000,000 shares; no issued shares at September 30, 2015 and December 31, 2014 | 0 | 0 | | |
Common stock, $0.01 par value. Authorized 300,000,000 shares; issued 71,460,681 and 71,251,529 shares at September 30, 2015 and December 31, 2014, respectively | 0 | 0 | | |
Treasury stock, 7,477,657 and 4,977,115 shares at September 30, 2015 and December 31, 2014, respectively | 0 | 0 | | |
Additional paid-in capital | 592.5 | 767.1 | | |
Accumulated other comprehensive loss | (15.4) | (12.2) | | |
Retained (deficit) earnings | 224 | 228.5 | | |
Total SunCoke Energy, Inc. stockholders’ equity | 801.1 | 983.4 | | |
Noncontrolling interests | 334.1 | 273.7 | | |
Total equity | 1,135.2 | 1,257.1 | | |
Total liabilities and equity | 2,415.2 | 2,004.8 | | |
Combining and Consolidating Adjustments | | | | |
Assets | | | | |
Cash and cash equivalents | 0 | 0 | $ 0 | $ 0 |
Receivables | 0 | 0 | | |
Inventories | 0 | 0 | | |
Income tax receivable | (13.2) | (22) | | |
Deferred income taxes | 0 | (2.6) | | |
Other current assets | 0 | 0 | | |
Advances to affiliate | (242.9) | (99.1) | | |
Total current assets | (256.1) | (123.7) | | |
Restricted cash | 0 | 0 | | |
Notes receivable from affiliate | (389) | (389) | | |
Investment in Brazilian cokemaking operations | 0 | 0 | | |
Equity method investment in VISA SunCoke Limited | 0 | 0 | | |
Properties, plants and equipment, net | 0 | 0 | | |
Goodwill | 0 | 0 | | |
Other intangible assets, net | 0 | 0 | | |
Deferred charges and other assets | 0 | 0 | | |
Investment in subsidiaries | (1,172.9) | (1,478.3) | | |
Total assets | (1,818) | (1,991) | | |
Liabilities and Equity | | | | |
Advances from affiliate | (242.9) | (99.1) | | |
Accounts payable | 0 | 0 | | |
Accrued liabilities | 0 | 0 | | |
Current portion of long-term debt | 0 | | | |
Interest payable | 0 | 0 | | |
Income taxes payable | (13.2) | (22) | | |
Total current liabilities | (256.1) | (121.1) | | |
Long-term debt | 0 | 0 | | |
Payable to affiliate | (389) | (389) | | |
Accrual for black lung benefits | 0 | 0 | | |
Retirement benefit liabilities | 0 | 0 | | |
Deferred income taxes | 0 | (2.6) | | |
Asset retirement obligations | 0 | 0 | | |
Other deferred credits and liabilities | 0 | 0 | | |
Total liabilities | (645.1) | (512.7) | | |
Equity | | | | |
Preferred stock, $0.01 par value. Authorized 50,000,000 shares; no issued shares at September 30, 2015 and December 31, 2014 | 0 | 0 | | |
Common stock, $0.01 par value. Authorized 300,000,000 shares; issued 71,460,681 and 71,251,529 shares at September 30, 2015 and December 31, 2014, respectively | 0 | 0 | | |
Treasury stock, 7,477,657 and 4,977,115 shares at September 30, 2015 and December 31, 2014, respectively | 0 | 0 | | |
Additional paid-in capital | (611.7) | (928.5) | | |
Accumulated other comprehensive loss | 19 | 21.5 | | |
Retained (deficit) earnings | (580.2) | (571.3) | | |
Total SunCoke Energy, Inc. stockholders’ equity | (1,172.9) | (1,478.3) | | |
Noncontrolling interests | 0 | 0 | | |
Total equity | (1,172.9) | (1,478.3) | | |
Total liabilities and equity | $ (1,818) | $ (1,991) | | |