Statements Of Condensed Consolidated Operations - USD ($) shares in Thousands, $ in Millions |
3 Months Ended | 12 Months Ended | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
Dec. 31, 2019 |
Sep. 30, 2019 |
Jun. 30, 2019 |
Mar. 31, 2019 |
Dec. 31, 2018 |
Sep. 30, 2018 |
Jun. 30, 2018 |
Mar. 31, 2018 |
Dec. 31, 2019 |
Dec. 31, 2018 |
Dec. 31, 2017 |
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| Income Statement [Abstract] | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý |
| Revenues from product sales and services | $ 534.1 | $ 555.6 | $ 743.2 | $ 157.0 | $ 696.3 | $ 741.8 | $ 714.3 | $ 180.0 | $ 1,989.9 | $ 2,332.4 | $ 1,866.0 |
| Cost of goods sold and operating expenses | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | (1,414.2) | (1,522.8) | (1,398.4) |
| Sales margin | 126.9 | 154.9 | 263.0 | 30.9 | 202.0 | 261.6 | 284.5 | 61.5 | 575.7 | 809.6 | 467.6 |
| Other operating income (expense): | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý |
| Selling, general and administrative expenses | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | (119.4) | (113.5) | (102.9) |
| Miscellaneous - net | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | (27.0) | (22.9) | 25.5 |
| Total other operating expense | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | (146.4) | (136.4) | (77.4) |
| Operating income | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | 429.3 | 673.2 | 390.2 |
| Other income (expense): | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý |
| Interest expense, net | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | (101.2) | (118.9) | (126.8) |
| Loss on extinguishment of debt | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | (18.2) | (6.8) | (165.4) |
| Other non-operating income | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | 2.2 | 17.2 | 10.2 |
| Total other expense | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | (117.2) | (108.5) | (282.0) |
| Income from continuing operations before income taxes | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | 312.1 | 564.7 | 108.2 |
| Income tax benefit (expense) | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | (17.6) | 475.2 | 252.4 |
| Income from continuing operations | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | 294.5 | 1,039.9 | 360.6 |
| Income (Loss) from Discontinued Operations, Net of Tax, Attributable to Parent | (0.2) | (0.9) | (0.6) | 0.0 | (14.6) | 238.0 | (64.3) | (70.9) | (1.7) | 88.2 | 2.5 |
| Net income | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | 292.8 | 1,128.1 | 363.1 |
| Loss attributable to noncontrolling interest | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | 0.0 | 0.0 | 3.9 |
| Net income attributable to Cliffs shareholders | $ 63.2 | $ 90.9 | $ 160.8 | $ (22.1) | $ 609.5 | $ 437.8 | $ 165.1 | $ (84.3) | $ 292.8 | $ 1,128.1 | $ 367.0 |
| Earnings (loss) per common share attributable to Cliffs shareholders - basic | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý |
| Continuing operations | $ 0.23 | $ 0.34 | $ 0.59 | $ (0.08) | $ 2.11 | $ 0.67 | $ 0.77 | $ (0.05) | $ 1.07 | $ 3.50 | $ 1.27 |
| Discontinued operations | 0 | 0 | 0 | 0 | (0.05) | 0.80 | (0.22) | (0.24) | (0.01) | 0.30 | 0.01 |
| Earnings (Loss) per Common Share Attributable to Cliffs Common Shareholders - Basic: | 0.23 | 0.34 | 0.59 | (0.08) | 2.06 | 1.47 | 0.55 | (0.29) | 1.06 | 3.80 | 1.28 |
| Earnings (loss) per common share attributable to Cliffs shareholders - diluted | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý |
| Continuing operations | 0.23 | 0.33 | 0.57 | (0.08) | 2.03 | 0.64 | 0.76 | (0.05) | 1.04 | 3.42 | 1.25 |
| Discontinued operations | 0 | 0 | 0 | 0 | (0.05) | 0.77 | (0.21) | (0.24) | (0.01) | 0.29 | 0.01 |
| Earnings (Loss) per Common Share Attributable to Cliffs Common Shareholders - Diluted: | $ 0.23 | $ 0.33 | $ 0.57 | $ (0.08) | $ 1.98 | $ 1.41 | $ 0.55 | $ (0.29) | $ 1.03 | $ 3.71 | $ 1.26 |
| Average number of shares (in thousands) | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý |
| Basic | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | 276,761 | 297,176 | 288,435 |
| Diluted | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | 284,480 | 304,141 | 292,961 |
| X | ||||||||||
- Definition The aggregate costs related to goods produced and sold and services rendered by an entity during the reporting period. This excludes costs incurred during the reporting period related to financial services rendered and other revenue generating activities. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- References No definition available.
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- Definition The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- References No definition available.
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- Definition Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Aggregate revenue less cost of goods and services sold or operating expenses directly attributable to the revenue generation activity. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of income (loss) from continuing operations before deduction of income tax expense (benefit) and income (loss) attributable to noncontrolling interest, and addition of income (loss) from equity method investments. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount after tax of income (loss) from continuing operations including portion attributable to the noncontrolling interest. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition The amount of net income (loss) from continuing operations per each share of common stock or unit outstanding during the reporting period. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition The amount of net income (loss) derived from continuing operations during the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount after tax of income (loss) from a discontinued operation attributable to the parent. Includes, but is not limited to, the income (loss) from operations during the phase-out period, gain (loss) on disposal, gain (loss) for reversal of write-down (write-down) to fair value, less cost to sell, and adjustments to a prior period gain (loss) on disposal. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Per basic share amount, after tax, of income (loss) from the day-to-day business activities of the discontinued operation and gain (loss) from the disposal of the discontinued operation. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Per diluted share amount, after tax, of income (loss) from the day-to-day business activities of the discontinued operation and gain (loss) from the disposal of the discontinued operation. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- References No definition available.
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- Definition Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition The net amount of nonoperating interest income (expense). No definition available.
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- Definition Amount of Net Income (Loss) attributable to noncontrolling interest. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount, after deduction of tax, noncontrolling interests, dividends on preferred stock and participating securities; of income (loss) available to common shareholders. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition The aggregate amount of income or expense from ancillary business-related activities (that is to say, excluding major activities considered part of the normal operations of the business). Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- References No definition available.
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- Definition Generally recurring costs associated with normal operations except for the portion of these expenses which can be clearly related to production and included in cost of sales or services. Includes selling, general and administrative expense. No definition available.
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- References No definition available.
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- Definition The net result for the period of deducting operating expenses from operating revenues. No definition available.
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- Definition Amount of income (expense) related to nonoperating activities, classified as other. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition The net amount of other operating income and expenses, the components of which are not separately disclosed on the income statement, from items that are associated with the entity's normal revenue producing operations. No definition available.
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- Definition The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss). Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition The aggregate total costs related to selling a firm's product and services, as well as all other general and administrative expenses. Direct selling expenses (for example, credit, warranty, and advertising) are expenses that can be directly linked to the sale of specific products. Indirect selling expenses are expenses that cannot be directly linked to the sale of specific products, for example telephone expenses, Internet, and postal charges. General and administrative expenses include salaries of non-sales personnel, rent, utilities, communication, etc. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition The average number of shares or units issued and outstanding that are used in calculating diluted EPS or earnings per unit (EPU), determined based on the timing of issuance of shares or units in the period. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Number of [basic] shares or units, after adjustment for contingently issuable shares or units and other shares or units not deemed outstanding, determined by relating the portion of time within a reporting period that common shares or units have been outstanding to the total time in that period. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- References No definition available.
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