Financial Instruments And Derivatives (Narrative) (Details) (USD $) In Millions	3 Months Ended	6 Months Ended	12 Months Ended
Jul. 03, 2011	Jul. 04, 2010	Jul. 03, 2011	Jul. 04, 2010	Dec. 31, 2010
Financial Instruments And Derivatives
Net gain(loss) from sale of marketable securities	$ 0.1	$ 0.1	$ 0.1	$ 0.4
Fair market value of investments with unrealized losses	144.9		144.9		185.3
Unrealized losses on temporary investments			0
Notional amount of foreign exchange contracts hedging monetary assets and liabilities	49.5		49.5		48.3
Fair market value of investments with unrealized losses greater than one year					5.0
Fair market value of investments with unrealized losses less than one year					$ 180.3

This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This item represents investment securities as of the balance sheet date which may include marketable securities, derivative financial instruments, and investments accounted for under the equity method.

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This item represents the net total realized and unrealized gain (loss) included in earnings for the period as a result of selling or holding marketable securities categorized as trading, available-for-sale, or held-to-maturity, including the unrealized holding gain (loss) of held-to-maturity securities transferred to the trading security category and the cumulative unrealized gain (loss) which was included in other comprehensive income (a separate component of shareholders' equity) for available-for-sale securities transferred to trading securities during the period. Additionally, this item would include any losses recognized for other than temporary impairments (OTTI) of the subject investments in debt and equity securities.

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