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Business Segment Information (Schedule Of Reconciliation Of Segment Operating Profit To Income (Loss) From Continuing Operations Before Interest) (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended			9 Months Ended
	Sep. 30, 2012	Apr. 01, 2012	Sep. 25, 2011	Sep. 30, 2012	Sep. 25, 2011	Dec. 31, 2011
Segment Reporting, Asset Reconciling Item [Line Items]
Segment operating profit	$ 50,929		$ 61,732	$ 176,065	$ 170,096
Goodwill impairment		(332,000)		(332,128)
Restructuring and other impairment charges	(1,088)		173	(84)	(3,598)
Gain on sales of businesses and assets				(332)
Income (loss) from continuing operations before interest, loss on extinguishments of debt and taxes	49,841		61,905	(155,815)	166,498
Total assets	3,670,789		3,868,711	3,670,789	3,868,711	3,924,103
Segment [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	2,860,272		3,185,169	2,860,272	3,185,169
Corporate Assets [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	802,656		565,249	802,656	565,249
Assets Of Businesses Divested [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets			106,591		106,591
Assets Held For Sale [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	$ 7,861		$ 11,702	$ 7,861	$ 11,702

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- Definition

Net gain on sale of business and assets.

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Restructuring and other impairment charges excluding goodwill impairments

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X

- Definition

Segment Operating Income Loss

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- Definition

Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

+ References

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 12

-Article 7



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

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-Name Statement of Financial Accounting Concepts (CON)

-Number 6

-Paragraph 25

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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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Loss recognized during the period that results from the write-down of goodwill after comparing the implied fair value of reporting unit goodwill with the carrying amount of that goodwill. Goodwill is assessed at least annually for impairment.

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-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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-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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-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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-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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-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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