FAIR VALUE MEASUREMENTS (Details) (USD $) In Millions, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Dec. 31, 2012
Fair Value, Liabilities Measured on Recurring Basis, Financial Statement Captions [Line Items]
Noncontrolling interest puts	$ 18.6	$ 19.4
Fair market value of zero-coupon subordinated notes			161.4	155.5
Fair market value of senior notes			2,910.6	2,907.8
Cash Surrender Value, Fair Value Disclosure	35.6	35.1
Fair Value Liabilities Measured On Recurring Basis Deferred Compensation Liability	38.4	36.3
Investments, Fair Value Disclosure	22.0	26.3
Level 1 [Member]
Fair Value, Liabilities Measured on Recurring Basis, Financial Statement Captions [Line Items]
Noncontrolling interest puts	0	0
Interest Rate Fair Value Hedge Asset at Fair Value	0	0
Cash Surrender Value, Fair Value Disclosure	0	0
Fair Value Liabilities Measured On Recurring Basis Deferred Compensation Liability	0	0
Investments, Fair Value Disclosure	21.8	26.3
Level 2 [Member]
Fair Value, Liabilities Measured on Recurring Basis, Financial Statement Captions [Line Items]
Noncontrolling interest puts	18.6	19.4
Interest Rate Fair Value Hedge Derivative at Fair Value, Net	11.2	0
Cash Surrender Value, Fair Value Disclosure	35.6	35.1
Fair Value Liabilities Measured On Recurring Basis Deferred Compensation Liability	38.4	36.3
Investments, Fair Value Disclosure	0	0
Level 3 [Member]
Fair Value, Liabilities Measured on Recurring Basis, Financial Statement Captions [Line Items]
Noncontrolling interest puts	0	0
Interest Rate Fair Value Hedge Derivative at Fair Value, Net	0	0
Cash Surrender Value, Fair Value Disclosure	0	0
Fair Value Liabilities Measured On Recurring Basis Deferred Compensation Liability	0	0
Investments, Fair Value Disclosure	$ 0	$ 0