GOODWILL AND INTANGIBLE ASSETS (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011	Dec. 31, 2011
Goodwill and Intangible Assets Disclosure [Abstract]
Amortization of intangible assets	$ 21.4	$ 21.9
Finite-Lived Intangible Assets, Future Amortization Expense
Estimated amortization expense, 2012	62.8
Estimated amortization expense, 2013	78.4
Estimated amortization expense, 2014	75.7
Estimated amortization expense, 2015	72.1
Estimated amortization expense, 2016	66.8
Estimated amortization expense, Thereafter	522.4
Canadian licenses, value	$ 738.4		$ 722.2