Derivative Financial Instruments (Derivative Instruments Located On The Condensed Consolidated Balance Sheet) (Details) (USD $) In Thousands	Oct. 08, 2011	Jan. 01, 2011
Derivatives, Fair Value [Line Items]
Derivative Assets	$ 8,444	$ 22,380
Derivative Liabilities	33,664	8,876
Interest Rate Contracts [Member]
Derivatives, Fair Value [Line Items]
Derivative Assets
Interest Rate Contracts [Member] | Other Current Liabilities [Member]
Derivatives, Fair Value [Line Items]
Derivative Liabilities	2,952	3,789
Interest Rate Contracts [Member] | Other Long Term Liabilities [Member]
Derivatives, Fair Value [Line Items]
Derivative Liabilities	1,277	2,684
Commodity Contracts [Member] | Other Current Assets [Member]
Derivatives, Fair Value [Line Items]
Derivative Assets	8,444	22,380
Commodity Contracts [Member] | Other Current Liabilities [Member]
Derivatives, Fair Value [Line Items]
Derivative Liabilities	28,337	2,032
Commodity Contracts [Member] | Other Long Term Assets [Member]
Derivatives, Fair Value [Line Items]
Derivative Assets
Commodity Contracts [Member] | Other Long Term Liabilities [Member]
Derivatives, Fair Value [Line Items]
Derivative Liabilities	$ 1,098	$ 371