Other Accrued Liabilities (Components Of Other Accrued Liabilities) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2011	Jan. 01, 2011
Other Accrued Liabilities [Abstract]
Employee compensation	$ 55,910	$ 50,015
Fair value of derivative instruments	8,078	5,821
Insurance	20,125	20,036
Collateral from counterparties for derivative positions		11,524
Other	26,400	24,876
Total	110,513	112,272
Other accrued liabilities	$ 110,513	$ 112,272