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POSTRETIREMENT PLANS (Tables)
 3 Months Ended
Mar. 26, 2017
Pretax Net Periodic Benefit Cost

Our pretax net periodic benefit cost related to our qualified defined benefit pension plans and retiree medical and life insurance plans consisted of the following (in millions):

 

     Quarters Ended  
  

 

 

  
    

March 26,

2017

      March 27,
2016		  

 

  

Qualified defined benefit pension plans

      

Service cost

     $ 205                $ 203          

Interest cost

      452                 465          

Expected return on plan assets

              (602)                        (667)         

Recognized net actuarial losses

      376                 340          

Amortization of net prior service credits

      (86)                (90)         

 

  

Total net periodic benefit cost

     $ 345                $ 251          

 

  

Retiree medical and life insurance plans

      

Service cost

     $ 5                $ 6          

Interest cost

      26                 30          

Expected return on plan assets

      (32)                (34)         

Recognized net actuarial losses

      5                 8          

Amortization of net prior service costs

      3                 5          

 

  

Total net periodic benefit cost

     $ 7                $ 15