Consolidated Statements Of Cash Flows (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 30, 2012	Apr. 01, 2011
Operating Activities
Net loss	$ (139.8)	$ (24.1)
Adjustments to reconcile net loss to net cash used for operating activities:
Depreciation and amortization	14.4	19.5
Loss on disposal of property, plant and equipment	0.8
Equity-based compensation	5.5	7.6
Deferred income taxes	0.6	11.5
Excess tax benefits from equity-based compensation		(0.2)
Net loss on investments in marketable securities		0.1
Restructuring and other charges	106.0	1.0
Net changes in assets and liabilities:
Accounts receivable	21.4	33.6
Inventories	12.5	(25.6)
Miscellaneous receivables and other current assets	2.8	(15.3)
Other assets	(2.3)	(1.6)
Accounts payable	(43.7)	(30.6)
Restructuring and other charges	(13.9)	(2.9)
Deferred revenue	8.1	7.7
Other accrued liabilities	(7.5)	(57.8)
Income taxes	(2.2)	(7.1)
Other long-term liabilities	(0.2)	2.7
Net Cash Used for Operating Activities	(37.5)	(81.5)
Capital expenditures	(5.0)	(10.4)
Payments for purchases of investments	(110.7)	(177.8)
Proceeds from sales and maturities of investments	139.0	253.5
Net Cash Provided by Investing Activities	23.3	65.3
Financing Activities
Proceeds from issuance of common stock under stock plans		0.4
Repurchase of common stock	(1.8)	(2.0)
Excess tax benefits from equity-based compensation		0.2
Dividends paid	(7.3)	(7.2)
Net Cash Used for Financing Activities	(9.1)	(8.6)
Effect of Exchange Rate Changes on Cash	3.4	6.7
Net Decrease in Cash and Cash Equivalents	(19.9)	(18.1)
Cash and Cash Equivalents-Beginning of Year	132.7	208.8
Cash and Cash Equivalents-End of Period	$ 112.8	$ 190.7