DEBT - SCHEDULE OF LONG-TERM DEBT (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Debt Instrument [Line Items]
Long-term Debt, Excluding Current Maturities	$ 2,889.1	$ 2,175.0
Long-term Debt, Current Maturities	(110.8)
Capital lease obligations, net of interest, current	(0.5)
Long term and capital lease obligations, net of interest, current	(111.3)
Capital Lease Obligations, Current	2.4
Long-term Debt and Capital Lease Obligations, Current	113.2
Long-term Debt, Maturities, Repayments of Principal in Year Two	250.0
Total long-term debt	2,875.0
Capital Lease Obligations, Noncurrent	14.1	0
Capital Leases, Future Minimum Payments Due in Two Years	2.4
Long-term Debt and Capital Lease Obligations, Maturities, Repayments of Principal in Year Two	252.4
Long-term Debt, Maturities, Repayments of Principal in Year Three	325.0
Capital Leases, Future Minimum Payments Due in Three Years	2.5
Long-term Debt and Capital Lease Obligations, Maturities, Repayments of Principal in Year Three	327.5
Long-term Debt, Maturities, Repayments of Principal in Year Four	500.0
Capital Leases, Future Minimum Payments Due in Four Years	2.5
Long-term Debt and Capital Lease Obligations, Maturities, Repayments of Principal in Year Four	502.5
Long-term Debt, Maturities, Repayments of Principal in Year Five	400.0
Capital Leases, Future Minimum Payments Due in Five Years	2.5
Long-term Debt and Capital Lease Obligations, Maturities, Repayments of Principal in Year Five	402.5
Long-term Debt, Maturities, Repayments of Principal after Year Five	1,400.0
Capital Leases, Future Minimum Payments Due Thereafter	17.0
Long-term Debt	2,985.8
Capital lease obligations, net of interest	14.6
Long term and capital lease obligations, net of interest	3,000.4
Long-term Debt and Capital Lease Obligations, Maturities, Repayments of Principal after Year Five	1,417.0
Capital Lease Obligations	29.3
Long-term Debt and Capital Lease Obligations	3,015.1
Long term debt, future minimum payments, interest included in payments	0
Capital Leases, Future Minimum Payments, Interest Included in Payments	(14.7)
Long term and capital lease future minimum payments, interest included in payments	(14.7)
Long term and capital lease obligations, net of interest, noncurrent	2,889.1
Senior notes due 2015 [Member]
Debt Instrument [Line Items]
Long-term Debt, Excluding Current Maturities	250.0	250.0
Senior notes due 2016 [Member]
Debt Instrument [Line Items]
Long-term Debt, Excluding Current Maturities	325.0	325.0
Senior notes due 2017 [Member]
Debt Instrument [Line Items]
Long-term Debt, Excluding Current Maturities	500.0	500.0
Senior notes due 2018 [Member]
Debt Instrument [Line Items]
Long-term Debt, Excluding Current Maturities	400.0	0
Senior notes due 2020 [Member]
Debt Instrument [Line Items]
Long-term Debt, Excluding Current Maturities	600.0	600.0
Senior notes due 2022 [Member]
Debt Instrument [Line Items]
Long-term Debt, Excluding Current Maturities	500.0	500.0
Senior notes due 2023 [Member]
Debt Instrument [Line Items]
Long-term Debt, Excluding Current Maturities	$ 300.0	$ 0