Quarterly report pursuant to Section 13 or 15(d)

FAIR VALUE OF FINANCIAL INSTRUMENTS (Fair Value, Assets and Liabilities Measured On Recurring Basis, Unobservable Input Reconciliation) (Details)

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FAIR VALUE OF FINANCIAL INSTRUMENTS (Fair Value, Assets and Liabilities Measured On Recurring Basis, Unobservable Input Reconciliation) (Details) (USD $)
In Millions, unless otherwise specified
 3 Months Ended
Mar. 31, 2014
Mar. 31, 2013
Fair Value, Assets Measured On Recurring Basis, Unobservable Input Reconciliation [Roll Forward]    
Beginning balance - January 1 $ 58.9 $ 62.4
Total gains    
Included in earnings 29.0 28.0
Settlements (44.6) (37.1)
Transfers into Level 3 0 0
Transfers out of Level 3 0 0
Ending balance - March 31 43.3 53.3
Total gains for the period included in earnings attributable to the change in unrealized gains on assets still held at the reporting date 29.0 28.0
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]    
Beginning balance - January 1 (10.3) (11.3)
Total gains    
Included in earnings (7.4) (6.8)
Settlements 10.3 11.3
Transfers into Level 3 0 0
Transfers out of Level 3 0 0
Ending balance - March 31 (7.4) (6.8)
Total losses for the period included in earnings attributable to the change in unrealized losses on liabilities still held at the reporting date $ (7.4) $ (6.8)