Marketable Securities Realized Gain Loss Other Than Temporary Impairments Credit Loss Amount

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- Definition

Marketable Securities Realized Gain Loss Other Than Temporary Impairments Reclassified From Retained Earnings To Accumulated Other Comprehensive Income Amount

+ Details

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- Definition

Minimum Maturity Duration Of Contractual Maturities Of Auction Rate Securities.

+ Details

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- Definition

This item represents the fair value of debt securities which are expected to mature after ten years from the balance sheet date which are categorized neither as held-to-maturity nor trading securities.

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 115

-Paragraph 20

-Subparagraph d

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 320

-Section 50

-Paragraph 3

-Subparagraph (d)

-URI http://asc.fasb.org/extlink&oid=6957658&loc=d3e62586-112803

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 320

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (a),(d)

-URI http://asc.fasb.org/extlink&oid=6872113&loc=d3e27161-111563

+ Details

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- Definition

This element represents the amount of loss recognized for other than temporary impairments (OTTI) of investments in debt and equity securities.

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 115

-Paragraph 16

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 320

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SAB TOPIC 5.M)

-URI http://asc.fasb.org/extlink&oid=6784337&loc=d3e87990-122713

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Data Type:	xbrli:monetaryItemType
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Period Type:	duration

Securities (Narrative) (Details) (USD $) In Millions, unless otherwise specified	9 Months Ended	12 Months Ended			3 Months Ended
	Sep. 25, 2011	Dec. 26, 2010	Sep. 25, 2011 Auction Rate Securities [Member] Structured Obligations Of Special Purpose Reinsurance Entities [Member]	Sep. 25, 2011 Auction Rate Securities [Member] Corporate Debt Securities [Member]	Jun. 28, 2009 Auction Rate Securities [Member]	Dec. 27, 2008 Auction Rate Securities [Member]	Sep. 25, 2011 Auction Rate Securities [Member]
Investments, market value	$ 29.7		$ 16.9	$ 12.1			$ 29.0
Other-than-temporary loss	14.1	14.5				19.0
Loss attributable to credit loss					15.5
Cumulative adjustment attributable to changes in the interest rate					$ 3.5
Minimum maturity duration of contractual maturities of auction rate securities, years	10