DEBT - SCHEDULE OF LONG-TERM DEBT (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Jan. 30, 2015	Dec. 19, 2014	Nov. 01, 2013
Debt Instrument [Line Items]
Long-term Debt and Capital Lease Obligations, Current	$ 556.0
Long-term Debt, Maturities, Repayments of Principal in Next Rolling Twelve Months	541.1
Credit Facility Option to Increase				$ 250.0
Long-term debt, less current portion	5,300.0	$ 5,940.3
Line of Credit Facility, Fair Value of Amount Outstanding	565.0	715.0
Long term debt issuance costs	(43.0)	(51.8)
Other Long-term Debt	565.0	55.5
Senior Notes, Noncurrent	2,900.0		$ 2,900.0		$ 700.0
Long-term Debt, Current Maturities	(541.1)
Capital lease obligations, net of interest, current	(8.4)
Long term and capital lease obligations, net of interest, current	(549.5)
Capital Lease Obligations, Current	14.9
Long-term Debt, Maturities, Repayments of Principal in Year Two	400.0
Total long-term debt	5,236.6
Capital Lease Obligations, Noncurrent	63.4
Capital Leases, Future Minimum Payments Due in Two Years	14.4
Long-term Debt and Capital Lease Obligations, Maturities, Repayments of Principal in Year Two	414.4
Long-term Debt, Maturities, Repayments of Principal in Year Three	0.0
Capital Leases, Future Minimum Payments Due in Three Years	13.3
Long-term Debt and Capital Lease Obligations, Maturities, Repayments of Principal in Year Three	13.3
Long-term Debt, Maturities, Repayments of Principal in Year Four	1,679.6
Capital Leases, Future Minimum Payments Due in Four Years	12.5
Long-term Debt and Capital Lease Obligations, Maturities, Repayments of Principal in Year Four	1,692.1
Long-term Debt, Maturities, Repayments of Principal in Year Five	0.0
Capital Leases, Future Minimum Payments Due in Five Years	11.2
Long-term Debt and Capital Lease Obligations, Maturities, Repayments of Principal in Year Five	11.2
Long-term Debt, Maturities, Repayments of Principal after Year Five	3,157.0
Capital Leases, Future Minimum Payments Due Thereafter	45.5
Long-term Debt	5,777.7
Capital lease obligations, net of interest	71.8
Long term and capital lease obligations, net of interest	5,850.0
Long-term Debt and Capital Lease Obligations, Maturities, Repayments of Principal after Year Five	3,202.5
Capital Lease Obligations	111.8
Long-term Debt and Capital Lease Obligations	5,889.5
Long term debt, future minimum payments, interest included in payments	0.0
Capital Leases, Future Minimum Payments, Interest Included in Payments	(40.0)
Long term and capital lease future minimum payments, interest included in payments	(40.0)
Long term and capital lease obligations, net of interest, noncurrent	$ 5,300.0
Debt Instrument, Basis Spread on Variable Rate	2.298%
Senior notes due 2017 [Member]
Debt Instrument [Line Items]
Long-term debt, less current portion	$ 0.0	500.0
Senior notes due 2018 [Member]
Debt Instrument [Line Items]
Long-term debt, less current portion	400.0	400.0
Senior Notes, Noncurrent					400.0
Senior notes due 2020 [Member]
Debt Instrument [Line Items]
Long-term debt, less current portion	614.6	621.6
Senior Notes, Noncurrent	500.0	500.0	500.0
Senior notes due 2022 [Member]
Debt Instrument [Line Items]
Long-term debt, less current portion	500.0	500.0
Senior Notes, Noncurrent	500.0	500.0	500.0
Senior notes due 2023 [Member]
Debt Instrument [Line Items]
Long-term debt, less current portion	300.0	300.0
Senior Notes, Noncurrent					$ 300.0
Senior notes due 2025 [Member] [Member]
Debt Instrument [Line Items]
Long-term debt, less current portion	1,000.0	1,000.0
Senior notes due 2045 [Member]
Debt Instrument [Line Items]
Long-term debt, less current portion	$ 900.0	$ 900.0
Senior Notes, Noncurrent			$ 900.0