Fair Value Measurements (Details) (USD $)																			3 Months Ended	9 Months Ended
	Jan. 25, 2012	Apr. 27, 2011	Jan. 25, 2012 Fair Value, Measurements, Recurring [Member]		Apr. 27, 2011 Fair Value, Measurements, Recurring [Member]		Jan. 25, 2012 Level 1 [Member] Fair Value, Measurements, Recurring [Member]		Apr. 27, 2011 Level 1 [Member] Fair Value, Measurements, Recurring [Member]		Jan. 25, 2012 Level 2 [Member] Fair Value, Measurements, Recurring [Member]		Apr. 27, 2011 Level 2 [Member] Fair Value, Measurements, Recurring [Member]		Jan. 25, 2012 Level 3 [Member] Fair Value, Measurements, Recurring [Member]		Apr. 27, 2011 Level 3 [Member] Fair Value, Measurements, Recurring [Member]		Jan. 25, 2012 Productivity Initatives [Member]	Jan. 25, 2012 Productivity Initatives [Member]	Jan. 25, 2012 Scenario, Actual [Member] Productivity Initatives [Member] Facility Closing [Member] factories
Assets:
Derivatives			$ 100,461,000	[1]	$ 115,705,000	[1]	$ 0	[1]	$ 0	[1]	$ 100,461,000	[1]	$ 115,705,000	[1]	$ 0	[1]	$ 0	[1]
Short-term investments			9,224,000	[2]	60,125,000	[2]	9,224,000	[2]	60,125,000	[2]	0	[2]	0	[2]	0	[2]	0	[2]
Total assets at fair value			109,685,000		175,830,000		9,224,000		60,125,000		100,461,000		115,705,000		0		0
Liabilities:
Derivatives			18,980,000	[1]	43,007,000	[1]	0	[1]	0	[1]	18,980,000	[1]	43,007,000	[1]	0	[1]	0	[1]
Earn-out			46,492,000	[3]	45,325,000	[3]	0	[3]	0	[3]	0	[3]	0	[3]	46,492,000	[3]	45,325,000	[3]
Total liabilities at fair value			65,472,000		88,332,000		0		0		18,980,000		43,007,000		46,492,000		45,325,000
Fair Value Measurements (Textuals) [Abstract]
Interest rate on notes issued	7.125%	7.125%
Recognized non-cash asset write-offs																			$ 11,000,000	$ 39,600,000
Number of Factories																					6

[1] Foreign currency derivative contracts are valued based on observable market spot and forward rates and classified within Level 2 of the fair value hierarchy. Interest rate swaps are valued based on observable market swap rates and classified within Level 2 of the fair value hierarchy. Cross-currency interest rate swaps are valued based on observable market spot and swap rates and classified within Level 2 of the fair value hierarchy.

[2] The Company acquired Coniexpress in Brazil in Fiscal 2011. The acquisition included short-term investments that are valued based on observable market rates and classified within Level 1 of the fair value hierarchy.

[3] The Company acquired Foodstar Holding Pte (“Foodstar”) in China in Fiscal 2011. Consideration for this acquisition included a potential earn-out payment in Fiscal 2014 contingent upon certain net sales and EBITDA (earnings before interest, taxes, depreciation and amortization) targets during Fiscals 2013 and 2014. The fair value of the earn-out was estimated using a discounted cash flow model and is based on significant inputs not observed in the market and thus represents a Level 3 measurement. Key assumptions in determining the fair value of the earn-out include the discount rate, and revenue and EBITDA projections for Fiscals 2013 and 2014. As of January 25, 2012 there were no significant changes to the fair value of the earn-out recorded for Foodstar at the acquisition date. A change in fair value of the earn-out could have a material impact on the Company's earnings.