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Benefit Plans (Tables)
 6 Months Ended
Sep. 08, 2018
Retirement Benefits [Abstract]  
Net Periodic Benefit Expense and Contributions for Defined Benefit Pension Plans and Other Postretirement Benefit Plans
Net periodic benefit income and contributions for defined benefit pension and other postretirement benefit plans consisted of the following:
 
Second Quarter Ended
Pension Benefits
 
Other Postretirement Benefits
September 8, 
 2018 
 (12 weeks)
 
September 9, 
 2017 
 (12 weeks)
 
September 8, 
 2018 
 (12 weeks)
 
September 9, 
 2017 
 (12 weeks)
Interest cost
$
22

 
$
20

 
$
1

 
$
1

Expected return on assets
(31
)
 
(33
)
 
—

 
—

Amortization of prior service benefit
(1
)
 
3

 
(3
)
 
(3
)
Amortization of net actuarial loss
3

 
—

 
—

 
—

Net periodic income expense
$
(7
)
 
$
(10
)
 
$
(2
)
 
$
(2
)
Contributions to benefit plans
$
(1
)
 
$
—

 
$
—

 
$
—

 
 
 
 
 
 
 
 
 
Year-To-Date Ended
Pension Benefits
 
Other Postretirement Benefits
September 8, 
 2018 
 (28 weeks)
 
September 9, 
 2017 
 (28 weeks)
 
September 8, 
 2018 
 (28 weeks)
 
September 9, 
 2017 
 (28 weeks)
Interest cost
$
50

 
$
44

 
$
1

 
$
1

Expected return on assets
(71
)
 
(73
)
 
—

 
—

Amortization of prior service benefit
(1
)
 
6

 
(7
)
 
(8
)
Amortization of net actuarial loss
7

 
—

 
—

 
1

Net periodic benefit income
$
(15
)
 
$
(23
)
 
$
(6
)
 
$
(6
)
Contributions to benefit plans
$
(6
)
 
$
(1
)
 
$
—

 
$
—