Consolidated Statements of Equity - USD ($) $ in Millions | Total | Total SunCoke Energy, Inc. Equity | Common Stock | Treasury Stock | Additional Paid-In Capital | Accumulated Other Comprehensive Loss | Retained (Deficit) Earnings | Non-controlling Interests |
Beginning balance (in shares) at Dec. 31, 2020 | | | 98,177,941 | | | | | |
Beginning balance at Dec. 31, 2020 | $ 500.9 | $ 469 | $ 1 | $ (184) | $ 715.7 | $ (17.1) | $ (46.6) | $ 31.9 |
Treasury stock, beginning balance (in shares) at Dec. 31, 2020 | | | | 15,404,482 | | | | |
Increase (Decrease) in Stockholders' Equity [Roll Forward] | | | | | | | | |
Net (loss) income | 10.7 | 7.7 | | | | | 7.7 | 3 |
Reclassifications of prior service benefit and actuarial loss amortization to earnings, net of tax | 0.2 | 0.2 | | | | 0.2 | | |
Currency translation adjustment | 0.2 | 0.2 | | | | 0.2 | | |
Share-based compensation | 2.3 | 2.3 | | | 2.3 | | | |
Share issuances, net of shares withheld for taxes (in shares) | | | 214,118 | | | | | |
Share issuances, net of shares withheld for taxes | (0.9) | (0.9) | | | (0.9) | | | |
Dividends | (10.1) | (10.1) | | | | | (10.1) | |
Ending balance (in shares) at Jun. 30, 2021 | | | 98,392,059 | | | | | |
Ending balance at Jun. 30, 2021 | 503.3 | 468.4 | $ 1 | $ (184) | 717.1 | (16.7) | (49) | 34.9 |
Treasury stock, ending balance (in shares) at Jun. 30, 2021 | | | | 15,404,482 | | | | |
Beginning balance (in shares) at Mar. 31, 2021 | | | 98,382,357 | | | | | |
Beginning balance at Mar. 31, 2021 | 513.1 | 479.5 | $ 1 | $ (184) | 715.3 | (17.7) | (35.1) | 33.6 |
Treasury stock, beginning balance (in shares) at Mar. 31, 2021 | | | | 15,404,482 | | | | |
Increase (Decrease) in Stockholders' Equity [Roll Forward] | | | | | | | | |
Net (loss) income | (7.5) | (8.8) | | | | | (8.8) | 1.3 |
Reclassifications of prior service benefit and actuarial loss amortization to earnings, net of tax | 0.1 | 0.1 | | | | 0.1 | | |
Currency translation adjustment | 0.9 | 0.9 | | | | 0.9 | | |
Share-based compensation | 1.8 | 1.8 | | | 1.8 | | | |
Share issuances, net of shares withheld for taxes (in shares) | | | 9,702 | | | | | |
Dividends | (5.1) | (5.1) | | | | | (5.1) | |
Ending balance (in shares) at Jun. 30, 2021 | | | 98,392,059 | | | | | |
Ending balance at Jun. 30, 2021 | 503.3 | 468.4 | $ 1 | $ (184) | 717.1 | (16.7) | (49) | 34.9 |
Treasury stock, ending balance (in shares) at Jun. 30, 2021 | | | | 15,404,482 | | | | |
Beginning balance (in shares) at Dec. 31, 2021 | | | 98,496,809 | | | | | |
Beginning balance at Dec. 31, 2021 | $ 535.4 | 498.1 | $ 1 | $ (184) | 721.2 | (16.7) | (23.4) | 37.3 |
Treasury stock, beginning balance (in shares) at Dec. 31, 2021 | 15,404,482 | | | 15,404,482 | | | | |
Increase (Decrease) in Stockholders' Equity [Roll Forward] | | | | | | | | |
Net (loss) income | $ 49.6 | 47.5 | | | | | 47.5 | 2.1 |
Reclassifications of prior service benefit and actuarial loss amortization to earnings, net of tax | 0.2 | 0.2 | | | | 0.2 | | |
Currency translation adjustment | 0.3 | 0.3 | | | | 0.3 | | |
Share-based compensation | 4.4 | 4.4 | | | 4.4 | | | |
Share issuances, net of shares withheld for taxes (in shares) | | | 299,016 | | | | | |
Share issuances, net of shares withheld for taxes | (1.2) | (1.2) | | | (1.2) | | | |
Dividends | (10.2) | (10.2) | | | | | (10.2) | |
Cash distribution to noncontrolling interests | (4.4) | 0 | | | | | 0 | (4.4) |
Ending balance (in shares) at Jun. 30, 2022 | | | 98,795,825 | | | | | |
Ending balance at Jun. 30, 2022 | $ 574.1 | 539.1 | $ 1 | $ (184) | 724.4 | (16.2) | 13.9 | 35 |
Treasury stock, ending balance (in shares) at Jun. 30, 2022 | 15,404,482 | | | 15,404,482 | | | | |
Beginning balance (in shares) at Mar. 31, 2022 | | | 98,754,995 | | | | | |
Beginning balance at Mar. 31, 2022 | $ 561.9 | 525 | $ 1 | $ (184) | 722.3 | (15.3) | 1 | 36.9 |
Treasury stock, beginning balance (in shares) at Mar. 31, 2022 | | | | 15,404,482 | | | | |
Increase (Decrease) in Stockholders' Equity [Roll Forward] | | | | | | | | |
Net (loss) income | 19 | 18 | | | | | 18 | 1 |
Reclassifications of prior service benefit and actuarial loss amortization to earnings, net of tax | 0.1 | 0.1 | | | | 0.1 | | |
Currency translation adjustment | (1) | (1) | | | | (1) | | |
Share-based compensation | 1.9 | 1.9 | | | 1.9 | | | |
Share issuances, net of shares withheld for taxes (in shares) | | | 40,830 | | | | | |
Share issuances, net of shares withheld for taxes | 0.2 | 0.2 | | | 0.2 | | | |
Dividends | (5.1) | (5.1) | | | | | (5.1) | |
Cash distribution to noncontrolling interests | (2.9) | | | | | | | (2.9) |
Ending balance (in shares) at Jun. 30, 2022 | | | 98,795,825 | | | | | |
Ending balance at Jun. 30, 2022 | $ 574.1 | $ 539.1 | $ 1 | $ (184) | $ 724.4 | $ (16.2) | $ 13.9 | $ 35 |
Treasury stock, ending balance (in shares) at Jun. 30, 2022 | 15,404,482 | | | 15,404,482 | | | | |