Productivity Initiatives 1 (Details) (USD $)	9 Months Ended		3 Months Ended	9 Months Ended	12 Months Ended						9 Months Ended
	Jan. 25, 2012	Apr. 27, 2011	Jan. 25, 2012 Productivity Initatives [Member]	Jan. 25, 2012 Productivity Initatives [Member]	Apr. 25, 2012 Productivity Initiative, Original Plan [Member]	Apr. 25, 2012 Productivity Initiative, Additional Plan [Member]	Apr. 25, 2012 Scenario, Plan [Member] Productivity Initiative, Original Plan [Member] Upper Limit [Member] positions	Apr. 25, 2012 Scenario, Plan [Member] Productivity Initiative, Original Plan [Member] Lower Limit [Member] positions	Apr. 25, 2012 Scenario, Plan [Member] Productivity Initiative, Additional Plan [Member] Upper Limit [Member] positions	Apr. 25, 2012 Scenario, Plan [Member] Facility Closing [Member] Productivity Initiative, Additional Plan [Member] factories	Jan. 25, 2012 Scenario, Actual [Member] Productivity Initatives [Member] positions	Jan. 25, 2012 Scenario, Actual [Member] Facility Closing [Member] Productivity Initatives [Member] factories	Jan. 25, 2012 Europe [Member] Scenario, Actual [Member] Facility Closing [Member] Productivity Initatives [Member] factories	Jan. 25, 2012 UNITED STATES Scenario, Actual [Member] Facility Closing [Member] Productivity Initatives [Member] factories	Jan. 25, 2012 Asia Pacific [Member] Scenario, Actual [Member] Facility Closing [Member] Productivity Initatives [Member] factories
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Expected Number of Positions Eliminated in Fiscal 2012							1,000	800	1,000
Restructuring and Related Cost, Expected Cash Paid in Fiscal 2012					$ 130,000,000	$ 20,000,000
Restructuring and Related Cost, Expected Cost in Fiscal 2012					160,000,000	55,000,000
Restructuring and Related Cost, Expected Cost, Per Share Amount in Fiscal 2012					$ 0.35	$ 0.15
Restructuring and Related Cost, Incurred Cost			33,800,000	111,600,000
Restructuring and Related Cost, Incurred Cost, After Tax			22,800,000	76,800,000
Restructuring and Related Cost, Incurred Cost, Per Share Amount			$ 0.07	$ 0.24
Asset Impairment Charges			11,000,000	39,600,000
Number of Factories										3		6	2	3	1
Severance Costs			9,400,000	38,400,000
Restructuring and Related Cost, Number of Positions Eliminated											830
Other Restructuring Costs			13,400,000	33,600,000
Restructuring and Related Cost, Incurred Cost, Cost of Products Sold			22,200,000	81,100,000
Restructuring and Related Cost, Incurred Cost, Selling General and Administrative Expense			11,500,000	30,500,000
Restructuring Reserve, Settled with Cash	(62,600,000)
Restructuring Reserve	$ 9,500,000	$ 0