Fair Value Measurements (Details 3) (Auction rate securities)	6 Months Ended
Jun. 29, 2013
Quantitative information for Level 3 Fair Value Measurements Assets
Replacement securities that will be issued by the investee on bankruptcy as a percentage of face value of original bonds and warrants	80.00%
Discounted cash flow \| Minimum
Quantitative information for Level 3 Fair Value Measurements Assets
Discount rate (as a percent)	67.40%
Discounted cash flow \| Maximum
Quantitative information for Level 3 Fair Value Measurements Assets
Discount rate (as a percent)	82.80%

Interest rate used to find the present value of an amount to be paid or received in the future as an input to measure fair value. For example, but not limited to, weighted average cost of capital (WACC), cost of capital, cost of equity and cost of debt.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 820

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (bbb)

-URI http://asc.fasb.org/extlink&oid=7578670&loc=d3e19207-110258

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