Debt (Senior Secured Notes) (Details) (USD $) In Millions, unless otherwise specified	6 Months Ended
	Jun. 24, 2012
Debt Instrument [Line Items]
Leverage ratio	4.09
Senior Secured Notes [Member]
Debt Instrument [Line Items]
Percentage of stock pledge of domestic subsidiaries	100.00%
Percentage of stock pledge of all first-tier foreign subsidiaries	65.00%
High [Member] | Shelf Notes [Member]
Debt Instrument [Line Items]
Fixed rate senior secured note	50.0
Maximum [Member]
Debt Instrument [Line Items]
Leverage ratio	2.75
Maximum [Member] | Senior Secured Notes [Member]
Debt Instrument [Line Items]
Leverage ratio	2.75
Minimum [Member]
Debt Instrument [Line Items]
Fixed charge coverage ratio	1.25
Minimum [Member] | Senior Secured Notes [Member]
Debt Instrument [Line Items]
Fixed charge coverage ratio	1.25