FAIR VALUES Part I (Details) (Fair Value, Measurements, Recurring [Member], USD $) In Millions, unless otherwise specified	Apr. 06, 2013	Dec. 31, 2012	Mar. 31, 2012
Fair Value, Assets Measured on Recurring Basis, Financial Statement Captions [Line Items]
Total assets	$ 9.0	$ 8.6	$ 14.5
Total liabilities	32.3	44.9	655.7
Level 1 [Member]
Fair Value, Assets Measured on Recurring Basis, Financial Statement Captions [Line Items]
Total assets	8.1	8.4	8.5
Total liabilities	8.3	8.6	8.7
Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Assets Measured on Recurring Basis, Financial Statement Captions [Line Items]
Total assets	0.9	0.2	6.0
Total liabilities	0	0	414.3
Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Assets Measured on Recurring Basis, Financial Statement Captions [Line Items]
Total assets	0	0	0
Total liabilities	24.0	36.3	232.7
Prepaid Expenses and Other Current Assets [Member]
Fair Value, Assets Measured on Recurring Basis, Financial Statement Captions [Line Items]
Rabbi Trust assets	8.1	8.4	8.5
Prepaid Expenses and Other Current Assets [Member] | Level 1 [Member]
Fair Value, Assets Measured on Recurring Basis, Financial Statement Captions [Line Items]
Rabbi Trust assets	8.1	8.4	8.5
Accrued Employee Compensation and Benefits [Member]
Fair Value, Assets Measured on Recurring Basis, Financial Statement Captions [Line Items]
Rabbi Trust liabilities	8.1	8.4	8.5
Accrued Employee Compensation and Benefits [Member] | Level 1 [Member]
Fair Value, Assets Measured on Recurring Basis, Financial Statement Captions [Line Items]
Rabbi Trust liabilities	8.1	8.4	8.5
Current Portion of Acquisition Consideration Payable [Member]
Fair Value, Assets Measured on Recurring Basis, Financial Statement Captions [Line Items]
Acquisition consideration	20.8	30.3	226.9
Current Portion of Acquisition Consideration Payable [Member] | Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Assets Measured on Recurring Basis, Financial Statement Captions [Line Items]
Acquisition consideration	20.8	30.3	226.9
Accrued Expenses and Other Current Liabilities [Member]
Fair Value, Assets Measured on Recurring Basis, Financial Statement Captions [Line Items]
Deferred director fees	0.2	0.2	0.2
Accrued Expenses and Other Current Liabilities [Member] | Level 1 [Member]
Fair Value, Assets Measured on Recurring Basis, Financial Statement Captions [Line Items]
Deferred director fees	0.2	0.2	0.2
Long-term Debt [Member]
Fair Value, Assets Measured on Recurring Basis, Financial Statement Captions [Line Items]
5.125% Senior Notes due 2014			262.6
Long-term Debt [Member] | Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Assets Measured on Recurring Basis, Financial Statement Captions [Line Items]
5.125% Senior Notes due 2014			262.6
Acquisition Consideration Payable, Net of Current Portion [Member]
Fair Value, Assets Measured on Recurring Basis, Financial Statement Captions [Line Items]
Acquisition consideration	3.2	6.0	5.8
Acquisition Consideration Payable, Net of Current Portion [Member] | Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Assets Measured on Recurring Basis, Financial Statement Captions [Line Items]
Acquisition consideration	3.2	6.0	5.8
British Pound - U.S. Dollar Forward Exchange Contracts [Member] | Prepaid Expenses and Other Current Assets [Member]
Fair Value, Assets Measured on Recurring Basis, Financial Statement Captions [Line Items]
Derivative Asset	0.5	0
British Pound - U.S. Dollar Forward Exchange Contracts [Member] | Prepaid Expenses and Other Current Assets [Member] | Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Assets Measured on Recurring Basis, Financial Statement Captions [Line Items]
Derivative Asset	0.5	0
Interest Rate Swaps [Member] | Other Long-term Assets [Member]
Fair Value, Assets Measured on Recurring Basis, Financial Statement Captions [Line Items]
Derivative Asset			5.9
Interest Rate Swaps [Member] | Other Long-term Assets [Member] | Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Assets Measured on Recurring Basis, Financial Statement Captions [Line Items]
Derivative Asset			5.9
Interest Rate Swaps [Member] | Other long-term liabilities [Member]
Fair Value, Assets Measured on Recurring Basis, Financial Statement Captions [Line Items]
Derivative Liability			0.3
Interest Rate Swaps [Member] | Other long-term liabilities [Member] | Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Assets Measured on Recurring Basis, Financial Statement Captions [Line Items]
Derivative Liability			0.3
Interest Rate Cap [Member] | Other Long-term Assets [Member]
Fair Value, Assets Measured on Recurring Basis, Financial Statement Captions [Line Items]
Derivative Asset	0	0	0.1
Interest Rate Cap [Member] | Other Long-term Assets [Member] | Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Assets Measured on Recurring Basis, Financial Statement Captions [Line Items]
Derivative Asset	0	0	0.1
Canadian Dollar - U.S. Dollar Forward Contracts [Member] | Prepaid Expenses and Other Current Assets [Member]
Fair Value, Assets Measured on Recurring Basis, Financial Statement Captions [Line Items]
Derivative Asset	0.4	0.2
Canadian Dollar - U.S. Dollar Forward Contracts [Member] | Prepaid Expenses and Other Current Assets [Member] | Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Assets Measured on Recurring Basis, Financial Statement Captions [Line Items]
Derivative Asset	0.4	0.2
Canadian Dollar - U.S. Dollar Forward Contracts [Member] | Accrued Expenses and Other Current Liabilities [Member]
Fair Value, Assets Measured on Recurring Basis, Financial Statement Captions [Line Items]
Derivative Liability			0.1
Canadian Dollar - U.S. Dollar Forward Contracts [Member] | Accrued Expenses and Other Current Liabilities [Member] | Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Assets Measured on Recurring Basis, Financial Statement Captions [Line Items]
Derivative Liability			0.1
Hedged Portion of 6.875% Senior Notes Due 2019 [Member] | Long-term Debt [Member]
Fair Value, Assets Measured on Recurring Basis, Financial Statement Captions [Line Items]
Derivative Liability			151.3
Hedged Portion of 6.875% Senior Notes Due 2019 [Member] | Long-term Debt [Member] | Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Assets Measured on Recurring Basis, Financial Statement Captions [Line Items]
Derivative Liability			$ 151.3