Consolidated Statements Of Cash Flows (USD $)	6 Months Ended
	Jul. 01, 2011	Jul. 02, 2010
Operating Activities
Net (loss) earnings		$ 109,700,000
Adjustments to reconcile net (loss) earnings to net cash provided by operating activities:
Depreciation and amortization		39,100,000
Loss on disposal of property, plant and equipment		200,000
Equity-based compensation		13,200,000
Deferred income taxes		(500,000)
Restructuring and other charges	1,000,000	9,500,000
Net loss (gain) on investments in marketable securities		(7,500,000)
Other-than-temporary impairment charges on investments
Excess tax benefits from equity-based compensation		600,000
Net changes in assets and liabilities:
Accounts receivable		(22,900,000)
Inventories		(8,700,000)
Miscellaneous receivables and other current assets		4,800,000
Other assets		3,800,000
Accounts payable		7,000,000
Restructuring and other charges		(6,500,000)
Deferred revenue		33,400,000
Other accrued liabilities		(13,200,000)
Income taxes		3,600,000
Other long-term liabilities		300,000
Net Cash (Used for) Provided by Operating Activities		165,900,000
Investing Activities
Capital expenditures		(14,100,000)
Payments for purchases of investments		(923,700,000)
Proceeds from sales and maturities of investments		1,010,300,000
Net Cash Provided by Investing Activities		72,500,000
Financing Activities
Proceeds from issuance of common stock under stock plans		6,700,000
Repurchase of common stock		(21,300,000)
Excess tax benefits from equity-based compensation		(600,000)
Dividends paid		(15,400,000)
Net Cash Used for Financing Activities		(30,600,000)
Effect of Exchange Rate Changes on Cash		(10,900,000)
Net Increase in Cash and Cash Equivalents		196,900,000
Cash and Cash Equivalents - Beginning of Year	208,800,000	154,000,000
Cash and Cash Equivalents - End of Period		350,900,000
Restated [Member]
Operating Activities
Net (loss) earnings	(53,400,000)
Adjustments to reconcile net (loss) earnings to net cash provided by operating activities:
Depreciation and amortization	38,600,000
Loss on disposal of property, plant and equipment	100,000
Equity-based compensation	15,600,000
Deferred income taxes	(2,800,000)
Restructuring and other charges	1,000,000
Net loss (gain) on investments in marketable securities	400,000
Other-than-temporary impairment charges on investments	1,200,000
Excess tax benefits from equity-based compensation	(200,000)
Net changes in assets and liabilities:
Accounts receivable	12,200,000
Inventories	1,700,000
Miscellaneous receivables and other current assets	(5,200,000)
Other assets	(900,000)
Accounts payable	(18,200,000)
Restructuring and other charges	(5,500,000)
Deferred revenue	38,100,000
Other accrued liabilities	(67,900,000)
Income taxes	(11,700,000)
Other long-term liabilities	3,600,000
Net Cash (Used for) Provided by Operating Activities	(53,300,000)
Investing Activities
Capital expenditures	(32,100,000)
Payments for purchases of investments	(384,900,000)
Proceeds from sales and maturities of investments	485,100,000
Net Cash Provided by Investing Activities	68,100,000
Financing Activities
Proceeds from short-term borrowings	1,300,000
Payments of short-term borrowings	(1,300,000)
Proceeds from issuance of common stock under stock plans	500,000
Repurchase of common stock	(4,800,000)
Excess tax benefits from equity-based compensation	200,000
Dividends paid	(14,500,000)
Net Cash Used for Financing Activities	(18,600,000)
Effect of Exchange Rate Changes on Cash	8,600,000
Net Increase in Cash and Cash Equivalents	4,800,000
Cash and Cash Equivalents - Beginning of Year	208,800,000
Cash and Cash Equivalents - End of Period	$ 213,600,000