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POSTRETIREMENT BENEFIT PLANS (Tables)
3 Months Ended
Mar. 26, 2023
Retirement Benefits [Abstract]  
Schedule of Pretax Net Periodic Benefit Cost The pretax FAS income 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,
2023
March 27,
2022
Qualified defined benefit pension plans
Operating:
Service cost$(16)$(24)
Non-operating:
Interest cost (365)(302)
Expected return on plan assets 430 502 
Recognized net actuarial losses (42)(150)
Amortization of prior service credits 87 90 
Non-service FAS pension income110 140 
Total FAS pension income $94 $116 
Retiree medical and life insurance plans
Operating:
Service cost$(1)$(2)
Non-operating:
Interest cost (17)(12)
Expected return on plan assets 26 34 
Recognized net actuarial gains8 11 
Amortization of prior service costs (3)(7)
Non-service FAS retiree medical and life income14 26 
Total FAS retiree medical and life income$13 $24