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Employee and Retiree Benefits (Tables)
9 Months Ended
May. 30, 2015
Compensation and Retirement Disclosure [Abstract]  
Schedule of Amounts Recognized in Balance Sheet [Table Text Block]
Postretirement health care and deferred compensation benefits are as follows:
(In thousands)
 
May 30,
2015
 
August 30,
2014
Postretirement health care benefit cost
 
$
36,052

 
$
36,930

Non-qualified deferred compensation
 
19,920

 
21,014

Executive share option plan liability
 
5,139

 
5,628

SERP benefit liability
 
2,806

 
2,974

Executive deferred compensation
 
305

 
213

Officer stock-based compensation
 
411

 
627

Total postretirement health care and deferred compensation benefits
 
64,633

 
67,386

Less current portion (1)
 
(5,422
)
 
(4,575
)
Long-term postretirement health care and deferred compensation benefits
 
$
59,211

 
$
62,811

Schedule of Postretirement Plan Amendments [Table Text Block]
Changes in the postretirement benefit plan include:
Date
Event
 
Dollar Cap
Reduction
Liability
Reduction
(In thousands)
Amortization
Period(1)
Fiscal 2005
Established employer dollar caps
 
 
 
 
 
January 2012
Reduced employer dollar caps
 
10%
$
4,598

7.8
years
January 2013
Reduced employer dollar caps
 
10%
$
4,289

7.5
years
January 2014
Reduced employer dollar caps
 
10%
$
3,580

7.3
years
January 2015
Reduced employer dollar caps
 
10%
$
1,524

7.1
years
Schedule of Net Benefit Costs [Table Text Block]
Net periodic postretirement benefit income consisted of the following components:
 
 
Three Months Ended
 
Nine Months Ended
(In thousands)
 
May 30,
2015
 
May 31,
2014
 
May 30,
2015
 
May 31,
2014
Interest cost
 
$
348

 
$
380

 
$
1,034

 
$
1,160

Service cost
 
107

 
96

 
320

 
296

Amortization of prior service benefit
 
(1,459
)
 
(1,482
)
 
(4,079
)
 
(4,168
)
Amortization of net actuarial loss
 
399

 
274

 
1,066

 
803

Net periodic postretirement benefit income
 
$
(605
)
 
$
(732
)
 
$
(1,659
)
 
$
(1,909
)
 
 
 
 
 
 
 
 
 
Payments for postretirement health care
 
$
231

 
$
247

 
$
707

 
$
779