Fair Value Measurements (Additional Fair Value Information Relating To The Company's Financial Instruments Outstanding) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 28, 2012		Dec. 30, 2011		Dec. 31, 2010	Jan. 01, 2010
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	$ 157,771		$ 154,621		$ 220,788	$ 273,848
Carrying Amount [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	157,771		154,621
Credit facility	908,000		562,300
Promissory notes and other debt	3,158		2,136
Fair Value [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	157,771		154,621
Credit facility	908,000		562,300
Promissory notes and other debt	3,158		2,136
Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Forward foreign currency exchange contracts	343		351
Forward foreign currency exchange contracts	420		1,968
Derivative Financial Instruments, Assets [Member] | Fair Value, Inputs, Level 2 [Member] | Carrying Amount [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Forward foreign currency exchange contracts	343	[1]	351	[1]
Derivative Financial Instruments, Assets [Member] | Fair Value, Inputs, Level 2 [Member] | Fair Value [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Forward foreign currency exchange contracts			351	[1]
Derivative Financial Instruments, Liabilities [Member] | Fair Value, Inputs, Level 2 [Member] | Carrying Amount [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Forward foreign currency exchange contracts	420	[1]	1,968	[1]
Derivative Financial Instruments, Liabilities [Member] | Fair Value, Inputs, Level 2 [Member] | Fair Value [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Forward foreign currency exchange contracts			$ 1,968	[1]

[1] Derivative assets and liabilities primarily represent forward currency exchange contracts. The Company typically enters into these contracts to minimize the short-term impact of foreign currency exchange rates on certain trade and inter-company receivables and payables. Derivative assets and liabilities are included in Other current assets and Other current liabilities on the Company's Consolidated Balance Sheets.