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Postretirement Benefit Plans (Tables)
 9 Months Ended
Mar. 29, 2019
Retirement Benefits [Abstract]  
Schedule of Components of Net Periodic Benefit Cost The following tables provide the components of our net periodic benefit income for our defined benefit plans, including defined benefit pension plans and other postretirement defined benefit plans:
 
Quarter Ended March 29, 2019
 
Three Quarters Ended March 29, 2019
 
Pension
 
Other Benefits
 
Pension
 
Other Benefits
 
 
 
 
 
 
 
 
 
(In millions)
Net periodic benefit income
 
 
 
 
 
 
 
Service cost
$
9

 
$
1

 
$
27

 
$
1

Interest cost
52

 
2

 
157

 
6

Expected return on plan assets
(95
)
 
(4
)
 
(286
)
 
(12
)
Amortization of net actuarial gain
—

 
(2
)
 
—

 
(5
)
Total net periodic benefit income
$
(34
)
 
$
(3
)
 
$
(102
)
 
$
(10
)

 
Quarter Ended March 30, 2018
 
Three Quarters Ended March 30, 2018
 
Pension
 
Other Benefits
 
Pension
 
Other Benefits
 
 
 
 
 
 
 
 
 
(In millions)
Net periodic benefit income
 
 
 
 
 
 
 
Service cost
$
10

 
$
—

 
$
29

 
$
1

Interest cost
49

 
1

 
146

 
5

Expected return on plan assets
(92
)
 
(4
)
 
(276
)
 
(12
)
Amortization of net actuarial gain
—

 
—

 
—

 
(1
)
Total net periodic benefit income
$
(33
)
 
$
(3
)
 
$
(101
)
 
$
(7
)