Derivative Instruments And Hedging Activities (Derivative Instrument Fair Value) (Detail) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011	Sep. 25, 2011
Derivatives Not Designated As Hedging Instruments [Member]
Derivative [Line Items]
Notional Value	$ 14,518	$ 0	$ 0
Asset Fair Value	603	0	0
Liability Fair Value	0	0	0
Derivatives Designated As Hedging Instruments
Derivative [Line Items]
Notional Value	425,664	412,465	392,260
Asset Fair Value	1,036	16,443	10,343
Liability Fair Value	2,458	5,137	6,834
Derivatives Designated As Hedging Instruments | Interest Rate Swaps - Unsecured Commercial Paper
Derivative [Line Items]
Notional Value	38,600	102,100	109,500
Asset Fair Value	0	0	0
Liability Fair Value	674	3,020	4,150
Derivatives Designated As Hedging Instruments | Foreign Currency Contracts [Member]
Derivative [Line Items]
Notional Value	385,883	306,450	279,230
Asset Fair Value	956	16,443	10,343
Liability Fair Value	1,784	1,852	2,439
Derivatives Designated As Hedging Instruments | Natural Gas Contracts [Member]
Derivative [Line Items]
Notional Value	1,181	3,915	3,530
Asset Fair Value	80	0	0
Liability Fair Value	$ 0	$ 265	$ 245