Investments Total Investments (Details) (USD $) In Thousands, unless otherwise specified	Mar. 29, 2015	Dec. 28, 2014
Investments [Abstract]
Equity method investments	$ 1,629,112us-gaap_EquityMethodInvestments	$ 1,689,996us-gaap_EquityMethodInvestments
Cost method investments	18,418us-gaap_CostMethodInvestments	18,238us-gaap_CostMethodInvestments
Marketable equity securities	7,414	8,958
Total investments	$ 1,654,944us-gaap_LongTermInvestments	$ 1,717,192us-gaap_LongTermInvestments

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

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

-Publisher FASB

-Name Accounting Standards Codification

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-SubTopic 10

-Section 25

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- Definition

Amount, after adjustment, of cost-method investment. Adjustments include, but are not limited to, dividends received in excess of earnings after date of investment that are considered a return of investment and other than temporary impairments.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

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- Definition

This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized.

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- Definition

The total amount of investments that are intended to be held for an extended period of time (longer than one operating cycle).

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