Quarterly report pursuant to Section 13 or 15(d)

DISCONTINUED OPERATIONS (Details)

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DISCONTINUED OPERATIONS (Details) (USD $)
In Millions, unless otherwise specified
3 Months Ended 6 Months Ended 3 Months Ended 6 Months Ended
Jun. 30, 2013
Jun. 30, 2012
Jun. 30, 2013
Jun. 30, 2012
Jun. 30, 2013
Sonoma [Member]
Jun. 30, 2012
Sonoma [Member]
Jun. 30, 2013
Sonoma [Member]
Jun. 30, 2012
Sonoma [Member]
Jul. 10, 2012
Asia Pacific Coal [Member]
Sonoma [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]                  
Percentage Of Ownership Interests                 45.00%
Statements of Consolidated Operations                  
REVENUES FROM PRODUCT SALES AND SERVICES         $ 0 $ 46.6 $ 0 $ 99.0  
INCOME FROM DISCONTINUED OPERATIONS, net of tax 0 2.3 0 7.8 0 2.3 0 7.8  
Tax effect of discontinued operation, tax expense (benefit)           $ 1.0   $ 3.3