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LEASE OBLIGATIONS (Narrative) (Details) (USD $)
In Millions, unless otherwise specified |
12 Months Ended | ||
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Dec. 31, 2012
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Dec. 31, 2011
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Dec. 31, 2010
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| Operating and Capital Leased Assets [Line Items] | |||
| Operating lease expense | $ 25.8 | $ 26.3 | $ 24.2 |
| Capital lease assets | 471.7 | 406.0 | |
| Accumulated amortization of capital leases | 184.5 | 110.6 | |
| Total minimum capital lease payments | 371.7 | ||
| Total minimum operating lease payments | 95.5 | ||
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North American Coal [Member]
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| Operating and Capital Leased Assets [Line Items] | |||
| Capital lease obligation | $ 75.9 | ||
| X | ||||||||||
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- Details
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- Definition
Property, plant, or equipment held under lease agreements classified as an asset. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount equal to the present value (the principal) at the beginning of the lease term of minimum lease payments during the lease term (excluding that portion of the payments representing executory costs such as insurance, maintenance, and taxes to be paid by the lessor, together with any profit thereon) net of payments or other amounts applied to the principal through the balance sheet date. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount of minimum lease payments for capital leases. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The total charge for the use of long-lived depreciable assets subject to a lease meeting the criteria for capitalization. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Rental expense incurred for leased assets including furniture and equipment which has not been recognized in costs and expenses applicable to sales and revenues; for example, cost of goods sold or other operating costs and expenses. No definition available.
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| X | ||||||||||
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- Definition
Amount of required minimum rental payments for leases having an initial or remaining non-cancelable letter-terms in excess of one year. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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