Pensions and Other Post-Retirement Benefits 9 (Details) (USD $) In Thousands	Apr. 27, 2011
Pension Benefits [Member]
Benefit payment expected in future years
2012	$ 201,912
2013	189,005
2014	192,729
2015	188,400
2016	192,655
Years 2017-2021	1,008,931
Other Retiree Benefits [Member]
Benefit payment expected in future years
2012	18,259
2013	18,679
2014	19,237
2015	19,599
2016	20,115
Years 2017-2021	$ 103,641

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The amount of the aggregate benefits expected to be paid in the five fiscal years thereafter (the aggregate amount of benefits expected to be paid in years 6 through 10 after the date of the latest statement of financial position).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 132R
-Paragraph 5
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- Definition

The amount of the benefits expected to be paid in Year 5.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 132R
-Paragraph 5
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- Definition

The amount of the benefits expected to be paid in Year 4.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 132R
-Paragraph 5
-Subparagraph f

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- Definition

The amount of the benefits expected to be paid in Year 1.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 132R
-Paragraph 5
-Subparagraph f

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- Definition

The amount of the benefits expected to be paid in Year 3.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 132R
-Paragraph 5
-Subparagraph f

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- Definition

The amount of the benefits expected to be paid in Year 2.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 132R
-Paragraph 5
-Subparagraph f

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