ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) AND OTHER COMPREHENSIVE INCOME (LOSS) (Details 2) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Reclassified from accumulated other comprehensive income (loss)
Pre-tax amount	$ (173.4)	$ 13.4	$ 20.6
Cost of sales	3,924.5	2,865.4	2,919.6
Reclassifications for the period	137.3	(4.7)	(29.8)
Tax expense (benefit)	73.6	57.2	(4.2)
Other comprehensive income (loss), net of tax	88.2	(3.7)	(18.0)
Reclassified from accumulated other comprehensive income (loss)
Reclassified from accumulated other comprehensive income (loss)
Reclassifications for the period	(15.7)	2.3	0.4
Tax expense (benefit)	(6.0)	0.8	0.1
Other comprehensive income (loss), net of tax	(9.7)	1.5	0.3
Pension liability adjustments | Reclassified from accumulated other comprehensive income (loss)
Reclassified from accumulated other comprehensive income (loss)
Curtailment gain	(15.5)
Amortization of actuarial loss (gain)	(0.2)	1.6	1.5
Pre-tax amount	(15.7)	1.6	1.5
Tax expense (benefit)	(6.0)	0.6	0.5
Other comprehensive income (loss), net of tax	(9.7)	1.0	1.0
Unrealized gain (loss) on derivatives | Reclassified from accumulated other comprehensive income (loss)
Reclassified from accumulated other comprehensive income (loss)
Tax expense (benefit)		0.2	(0.4)
Other comprehensive income (loss), net of tax		0.5	(0.7)
Unrealized gain (loss) on derivatives | Commodity hedge contracts | Reclassified from accumulated other comprehensive income (loss)
Reclassified from accumulated other comprehensive income (loss)
Cost of sales		$ 0.7	$ (1.1)