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RELATED PARTY TRANSACTIONS (Sale of AR) (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2015
Jun. 30, 2014
Jun. 30, 2015
Jun. 30, 2014
Dec. 31, 2014
Net value of receivables sold $ 917.8 $ 1,236.0 $ 2,013.7 $ 2,532.7  
Proceeds from Sale of Receivables 917.5 $ 1,235.7 2,013.1 $ 2,532.1  
Restricted cash (Notes 3, 10 and 12) 34.4   34.4   $ 97.0
Uncollected sale of receivables 340.5   340.5    
Sale of Accounts Receivable to Affiliate [Member]          
Restricted cash (Notes 3, 10 and 12) $ 6.9   $ 6.9   $ 71.9