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MARKETABLE SECURITIES - Available-for-sale Securities (Details) (USD $) In Millions, unless otherwise specified | Mar. 28, 2014 | Dec. 27, 2013
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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 |

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- 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. + Details
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- 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 + Details
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