Consolidated Statements Of Cash Flows (USD $)	9 Months Ended
	Sep. 30, 2011	Oct. 01, 2010
Operating Activities
Net (loss) earnings		$ 166,500,000
Adjustments to reconcile net (loss) earnings to net cash provided by operating activities:
Depreciation and amortization		57,500,000
Loss on disposal of property, plant and equipment
Goodwill and IPR&D impairment
Equity-based compensation		20,700,000
Deferred income taxes		11,100,000
Restructuring and other charges	20,500,000	9,500,000
Net loss (gain) on investments in marketable securities		(12,000,000)
Other-than-temporary impairment charges on investments
Excess tax benefits from equity-based compensation
Net changes in assets and liabilities:
Accounts receivable		(12,800,000)
Inventories		(14,900,000)
Miscellaneous receivables and other current assets		6,300,000
Other assets		(3,500,000)
Accounts payable		3,100,000
Restructuring and other charges		(10,400,000)
Deferred revenue		19,900,000
Other accrued liabilities		2,900,000
Income taxes		(8,500,000)
Other long-term liabilities		300,000
Net Cash (Used for) Provided by Operating Activities		235,700,000
Investing Activities
Capital expenditures		(31,100,000)
Payments for purchases of investments		(1,970,100,000)
Proceeds from sales and maturities of investments		2,045,300,000
Net Cash Provided by Investing Activities		44,100,000
Financing Activities
Proceeds from short-term borrowings
Payments of short-term borrowings
Proceeds from issuance of common stock under stock plans		7,100,000
Repurchase of common stock		(132,600,000)
Excess tax benefits from equity-based compensation
Dividends paid		(22,900,000)
Net Cash Used for Financing Activities		(148,400,000)
Effect of Exchange Rate Changes on Cash		800,000
Net (Decrease) Increase in Cash and Cash Equivalents		132,200,000
Cash and Cash Equivalents - Beginning of Year	208,800,000	154,000,000
Cash and Cash Equivalents - End of Period		286,200,000
Restated [Member]
Operating Activities
Net (loss) earnings	(183,500,000)
Adjustments to reconcile net (loss) earnings to net cash provided by operating activities:
Depreciation and amortization	57,600,000
Loss on disposal of property, plant and equipment	700,000
Goodwill and IPR&D impairment	102,700,000
Equity-based compensation	21,900,000
Deferred income taxes	(800,000)
Restructuring and other charges	20,500,000
Net loss (gain) on investments in marketable securities	100,000
Other-than-temporary impairment charges on investments	1,800,000
Excess tax benefits from equity-based compensation	(200,000)
Net changes in assets and liabilities:
Accounts receivable	43,600,000
Inventories	6,800,000
Miscellaneous receivables and other current assets	(11,000,000)
Other assets	(2,500,000)
Accounts payable	(14,000,000)
Restructuring and other charges	(9,800,000)
Deferred revenue	(8,100,000)
Other accrued liabilities	(59,200,000)
Income taxes	3,400,000
Other long-term liabilities	(1,800,000)
Net Cash (Used for) Provided by Operating Activities	(31,800,000)
Investing Activities
Capital expenditures	(45,800,000)
Payments for purchases of investments	(616,100,000)
Proceeds from sales and maturities of investments	708,700,000
Net Cash Provided by Investing Activities	46,800,000
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	600,000
Repurchase of common stock	(5,000,000)
Excess tax benefits from equity-based compensation	200,000
Dividends paid	(21,800,000)
Net Cash Used for Financing Activities	(26,000,000)
Effect of Exchange Rate Changes on Cash	(3,600,000)
Net (Decrease) Increase in Cash and Cash Equivalents	(14,600,000)
Cash and Cash Equivalents - Beginning of Year	208,800,000
Cash and Cash Equivalents - End of Period	$ 194,200,000