Derivative Instruments And Hedging Activities (Gain (Loss) On Derivative Cash Flow Hedges Recognized In OCI) (Details) (USD $) In Thousands	3 Months Ended	9 Months Ended
Sep. 25, 2011	Sep. 26, 2010	Sep. 25, 2011	Sep. 26, 2010
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain/(Loss) Recognized in OCI	$ 8,614	$ (17,941)	$ (8,976)	$ (8,200)
Interest Rate Swaps Unsecured Commercial Paper [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of (Loss) Recognized in OCI	(237)	(910)	(642)	(4,391)
Foreign Currency Contracts [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of (Loss) Recognized in OCI	9,051	(16,512)	(7,870)	(2,641)
Natural Gas Contracts [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of (Loss) Recognized in OCI	$ (200)	$ (519)	$ (464)	$ (1,168)

The effective portion of gains and losses (net) on derivative instruments designated and qualifying as hedging instruments that was recognized in other comprehensive income during the current period.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 50

-Paragraph 4C

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=6935481&loc=SL5624171-113959

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 133

-Paragraph 205G

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 133

-Paragraph 44C

-Subparagraph b

-Clause 2

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
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