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MARKETABLE SECURITIES - Available-for-sale Securities (Details) (USD $) In Millions, unless otherwise specified	Mar. 28, 2014	Dec. 27, 2013
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	$ 36.3	$ 20.8
Fair Value	36.3	20.7
Certificates of deposit
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	9.5	10.0
Fair Value	9.5	9.9
Variable-rate demand notes
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	1.8	5.8
Fair Value	1.8	5.8
Commercial paper
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	5.0	5.0
Fair Value	5.0	5.0
Municipal debt securities
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	10.4
Fair Value	10.4
Corporate debt securities
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	9.6
Fair Value	$ 9.6

X

- Definition

This item represents the cost of debt securities, which are categorized neither as held-to-maturity nor trading, net of adjustments including accretion, amortization, collection of cash, previous other-than-temporary impairments recognized in earnings (less any cumulative-effect adjustments recognized, as defined), and fair value hedge accounting adjustments, if any.

+ References

No definition available.

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X

- Definition

Amount of debt securities categorized neither as held-to-maturity nor trading.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 320

-SubTopic 10

-Section 25

-Paragraph 1

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=28360136&loc=d3e22054-111558



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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 320

-SubTopic 10

-Section 45

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6871852&loc=d3e26610-111562



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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 320

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (aa)

-URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27161-111563



Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 320

-Section 50

-Paragraph 2

-Subparagraph (b)-(g)

-URI http://asc.fasb.org/extlink&oid=6957658&loc=d3e62557-112803

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