DEBT (Long-term debt) (Table) (Details) (USD $) In Millions, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012	Aug. 23, 2012
Debt Instrument [Line Items]
Debt to EBITDA (Leverage) Ratio	1.8
Total long-term debt	$ 2,175.0	$ 2,175.0
Senior notes due 2013 [Member]
Debt Instrument [Line Items]
Stated interest rate percentage	5.50%
Senior notes due 2015 [Member]
Debt Instrument [Line Items]
Total long-term debt	250.0	250.0
Stated interest rate percentage	5.625%
Senior notes due 2016 [Member]
Debt Instrument [Line Items]
Total long-term debt	325.0	325.0
Stated interest rate percentage	3.125%
Senior notes due 2017 [Member]
Debt Instrument [Line Items]
Total long-term debt	500.0	500.0
Stated interest rate percentage	2.20%		2.20%
Senior notes due 2020 [Member]
Debt Instrument [Line Items]
Total long-term debt	600.0	600.0
Stated interest rate percentage	4.625%
Senior notes due 2022 [Member]
Debt Instrument [Line Items]
Total long-term debt	$ 500.0	$ 500.0
Stated interest rate percentage	3.75%		3.75%