Derivative Financial Instruments and Hedging Activities 1 (Details) (USD $) In Thousands, unless otherwise specified	Apr. 29, 2012	Apr. 27, 2011
Foreign Exchange Contract [Member]
Assets:
Total assets	$ 30,547	$ 45,381
Liabilities:
Total liabilities	12,619	36,882
Foreign Exchange Contract [Member] | Designated as Hedging Instrument [Member]
Assets:
Total assets	25,506	36,052
Liabilities:
Total liabilities	10,667	35,858
Foreign Exchange Contract [Member] | Designated as Hedging Instrument [Member] | Other Receivables, Net [Member]
Assets:
Total assets	17,318	28,139
Foreign Exchange Contract [Member] | Designated as Hedging Instrument [Member] | Other Non-Current Assets [Member]
Assets:
Total assets	8,188	7,913
Foreign Exchange Contract [Member] | Designated as Hedging Instrument [Member] | Other Payables [Member]
Liabilities:
Total liabilities	10,653	27,804
Foreign Exchange Contract [Member] | Designated as Hedging Instrument [Member] | Other Non-Current Liabilities [Member]
Liabilities:
Total liabilities	14	8,054
Foreign Exchange Contract [Member] | Not Designated as Hedging Instrument [Member]
Assets:
Total assets	5,041	9,329
Foreign Exchange Contract [Member] | Not Designated as Hedging Instrument [Member] | Other Receivables, Net [Member]
Assets:
Total assets	5,041	9,329
Foreign Exchange Contract [Member] | Not Designated as Hedging Instrument [Member] | Other Non-Current Assets [Member]
Assets:
Total assets	0	0
Foreign Exchange Contract [Member] | Not Designated as Hedging Instrument [Member] | Other Payables [Member]
Liabilities:
Total liabilities	1,952	1,024
Interest Rate Contract [Member]
Assets:
Total assets	36,478	55,426
Liabilities:
Total liabilities	0	0
Interest Rate Contract [Member] | Designated as Hedging Instrument [Member]
Assets:
Total assets	36,244	55,426
Liabilities:
Total liabilities	0	0
Interest Rate Contract [Member] | Designated as Hedging Instrument [Member] | Other Receivables, Net [Member]
Assets:
Total assets	6,851	38,703
Interest Rate Contract [Member] | Designated as Hedging Instrument [Member] | Other Non-Current Assets [Member]
Assets:
Total assets	29,393	16,723
Interest Rate Contract [Member] | Designated as Hedging Instrument [Member] | Other Payables [Member]
Liabilities:
Total liabilities	0	0
Interest Rate Contract [Member] | Designated as Hedging Instrument [Member] | Other Non-Current Liabilities [Member]
Liabilities:
Total liabilities	0	0
Interest Rate Contract [Member] | Not Designated as Hedging Instrument [Member]
Assets:
Total assets	234	0
Interest Rate Contract [Member] | Not Designated as Hedging Instrument [Member] | Other Receivables, Net [Member]
Assets:
Total assets	0	0
Interest Rate Contract [Member] | Not Designated as Hedging Instrument [Member] | Other Non-Current Assets [Member]
Assets:
Total assets	234	0
Interest Rate Contract [Member] | Not Designated as Hedging Instrument [Member] | Other Payables [Member]
Liabilities:
Total liabilities	0	0
Cross Currency Interest Rate Contract [Member]
Assets:
Total assets	23,196	14,898
Liabilities:
Total liabilities	2,760	6,125
Cross Currency Interest Rate Contract [Member] | Designated as Hedging Instrument [Member]
Assets:
Total assets	23,196	14,898
Liabilities:
Total liabilities	2,760	6,125
Cross Currency Interest Rate Contract [Member] | Designated as Hedging Instrument [Member] | Other Receivables, Net [Member]
Assets:
Total assets	18,222	0
Cross Currency Interest Rate Contract [Member] | Designated as Hedging Instrument [Member] | Other Non-Current Assets [Member]
Assets:
Total assets	4,974	14,898
Cross Currency Interest Rate Contract [Member] | Designated as Hedging Instrument [Member] | Other Payables [Member]
Liabilities:
Total liabilities	2,760	6,125
Cross Currency Interest Rate Contract [Member] | Designated as Hedging Instrument [Member] | Other Non-Current Liabilities [Member]
Liabilities:
Total liabilities	0	0
Cross Currency Interest Rate Contract [Member] | Not Designated as Hedging Instrument [Member]
Assets:
Total assets	0	0
Cross Currency Interest Rate Contract [Member] | Not Designated as Hedging Instrument [Member] | Other Receivables, Net [Member]
Assets:
Total assets	0	0
Cross Currency Interest Rate Contract [Member] | Not Designated as Hedging Instrument [Member] | Other Non-Current Assets [Member]
Assets:
Total assets	0	0
Cross Currency Interest Rate Contract [Member] | Not Designated as Hedging Instrument [Member] | Other Payables [Member]
Liabilities:
Total liabilities	$ 0	$ 0