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Derivative Financial Instruments (Details Textual)
In Millions, unless otherwise specified
12 Months Ended 12 Months Ended
Dec. 31, 2012
USD ($)
agreement
Jan. 01, 2012
USD ($)
Jan. 02, 2011
USD ($)
Dec. 31, 2012
AUD
Aug. 31, 2010
Dec. 31, 2012
Senior Note Due 2017 [Member]
Feb. 10, 2011
Senior Note Due 2017 [Member]
Oct. 20, 2009
Senior Note Due 2017 [Member]
Dec. 31, 2012
Fair Value Hedging [Member]
Interest Rate Swap [Member]
USD ($)
Jan. 01, 2012
Fair Value Hedging [Member]
Interest Rate Swap [Member]
USD ($)
Jan. 02, 2011
Fair Value Hedging [Member]
Interest Rate Swap [Member]
USD ($)
Dec. 31, 2012
Minimum
Dec. 31, 2012
Maximum
Derivative Instruments, Gain (Loss) [Line Items]                          
Gains (loss) recongized and recorded in earnings related to fair value hedge                 $ (1.2) $ 4.1 $ 5.2    
Interest Rate Swaps [Abstract]                          
Notes bear interest at a rate         8.47% 7.75% 6.625% 7.75%          
Notional amount coincide with the terms of the non-recourse debt 100.0                        
Variable interest rate payment to the same counterparties                       4.16% 4.29%
Interest Rate Swap Agreements       50.9                  
Derivative Financial Instruments [Abstract]                          
Number of Interest Rate Swap Agreements 4                        
Fair value of the swap assets included as Other Non-Current Assests 6.2 7.4                      
Fixed interest rate on cash flow interest rate derivative 9.70%                        
Net unrealized loss recognized in the periods and recorded in accumulated other comprehensive income, net of tax (0.5) (1.2) (0.1)                    
Interest Rate Cash Flow Hedge Liability at Fair Value $ 0.7 $ 0