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POSTRETIREMENT PLANS (Tables) | 9 Months Ended
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Sep. 24, 2017
Retirement Benefits [Abstract] |
Schedule of 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 |  | Nine Months Ended
|  | September 24, 2017 |  | September 25, 2016 |  | September 24, 2017 |  | September 25, 2016
Qualified defined benefit pension plans |  |  |  |  |  |  |  |  |  |  |  |
Service cost |  | $ | 205 |  |  |  | $ | 208 |  |  |  | $ | 615 |  |  |  | $ | 615 |  |
Interest cost |  | 452 |  |  |  | 465 |  |  |  | 1,357 |  |  |  | 1,396 |  |
Expected return on plan assets |  | (602 | ) |  |  | (667 | ) |  |  | (1,806 | ) |  |  | (2,000 | ) |
Recognized net actuarial losses |  | 376 |  |  |  | 340 |  |  |  | 1,129 |  |  |  | 1,019 |  |
Amortization of prior service credits |  | (89 | ) |  |  | (90 | ) |  |  | (265 | ) |  |  | (272 | ) |
Total net periodic benefit cost |  | $ | 342 |  |  |  | $ | 256 |  |  |  | $ | 1,030 |  |  |  | $ | 758 |  |
Retiree medical and life insurance plans |  |  |  |  |  |  |  |  |  |
Service cost |  | $ | 5 |  |  |  | $ | 6 |  |  |  | $ | 15 |  |  |  | $ | 18 |  |
Interest cost |  | 25 |  |  |  | 30 |  |  |  | 76 |  |  |  | 89 |  |
Expected return on plan assets |  | (31 | ) |  |  | (34 | ) |  |  | (95 | ) |  |  | (103 | ) |
Recognized net actuarial losses |  | 4 |  |  |  | 8 |  |  |  | 14 |  |  |  | 25 |  |
Amortization of prior service costs |  | 4 |  |  |  | 5 |  |  |  | 11 |  |  |  | 16 |  |
Total net periodic benefit cost |  | $ | 7 |  |  |  | $ | 15 |  |  |  | $ | 21 |  |  |  | $ | 45 |  |

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- Definition Tabular disclosure of the components of net benefit costs for pension plans and/or other employee benefit plans including service cost, interest cost, expected return on plan assets, gain (loss), prior service cost or credit, transition asset or obligation, and gain (loss) recognized due to settlements or curtailments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (h) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
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