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Pension And Postretirement Benefits (Tables)
 6 Months Ended
Jan. 27, 2019
Retirement Benefits [Abstract]  
Schedule of Net Benefit Costs [Table Text Block]
Components of net benefit expense (income) were as follows:
 
 
Three Months Ended
 
Six Months Ended
 
 
Pension
 
Postretirement
 
Pension
 
Postretirement
 
 
January 27,
2019
 
January 28,
2018
 
January 27,
2019
 
January 28,
2018
 
January 27,
2019
 
January 28,
2018
 
January 27,
2019
 
January 28,
2018
Service cost
 
$
6

 
$
6

 
$
—

 
$
—

 
$
11

 
$
12

 
$
—

 
$
—

Interest cost
 
20

 
18

 
2

 
2

 
41

 
37

 
4

 
4

Expected return on plan assets
 
(35
)
 
(36
)
 
—

 
—

 
(71
)
 
(72
)
 
—

 
—

Amortization of prior service credit
 
—

 
—

 
(7
)
 
(6
)
 
—

 
—

 
(14
)
 
(13
)
Special termination benefits
 
—

 
2

 
—

 
—

 
—

 
2

 
—

 
—

Net periodic benefit income
 
$
(9
)
 
$
(10
)
 
$
(5
)
 
$
(4
)
 
$
(19
)
 
$
(21
)
 
$
(10
)
 
$
(9
)

The special termination benefits of $2 related to the planned closure of the manufacturing facility in Toronto, Ontario, and were included in Restructuring charges. See Note 7.