|
DEBT AND CREDIT FACILITIES DEBT AND CREDIT FACILITIES (Schedule of Debt Maturities) (Details) (USD $)
In Millions, unless otherwise specified |
Mar. 31, 2015
|
|---|---|
| Debt Disclosure [Abstract] | Ìý |
| Debt Maturities Remainder 2015 | $ 0us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalRemainderOfFiscalYear |
| Debt Maturities 2016 | 0us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths |
| Debt Maturities 2017 | 0us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo |
| Debt Maturities 2018 | 436.0us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree |
| Debt Maturities 2019 | 0us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour |
| Debt Maturities 2020 | 1,719.5us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive |
| Debt Maturities 2021 and After | 916.0us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive |
| Long-term Debt, Maturities, Total | $ 3,071.5clf_LongTermDebtMaturitiesTotal |
| X | ||||||||||
|
- Definition
Long-term Debt, Maturities, Total No definition available.
|
| X | ||||||||||
|
- Details
|
| X | ||||||||||
|
- Definition
Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing after the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the next fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the fourth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the third fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the second fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
|
- Definition
Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the remainder of the fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|