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Postretirement Benefit Plans (Tables) | 3 Months Ended
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Apr. 02, 2021
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 April 2, 2021 |  | Quarter Ended April 3, 2020
(In millions) | Pension |  | Other Benefits |  | Pension |  | Other Benefits
Net periodic benefit income |  |  |  |  |  |  |
Service cost | $ | 18 |  |  | $ | 1 |  |  | $ | 16 |  |  | $ | — |
Interest cost | 46 |  |  | 1 |  |  | 69 |  |  | 2 |
Expected return on plan assets | (155) |  |  | (5) |  |  | (158) |  |  | (5) |
Amortization of net actuarial loss | 9 |  |  | — |  |  | 2 |  |  | — |
Amortization of prior service credit | (7) |  |  | — |  |  | (7) |  |  | — |
Contractual termination benefits(1) | — |  |  | — |  |  | 1 |  |  | — |
Total net periodic benefit income | $ | (89) |  |  | $ | (3) |  |  | $ | (77) |  |  | $ | (3) |
_______________ (1)Contractual termination benefits related to facility rationalization as part of restructuring activities in connection with the L3Harris Merger integration. See Note D — Restructuring and Other Exit Costs in these Notes for additional information regarding restructuring activities.

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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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (h) -URI http://asc.fasb.org/extlink&oid=118255775&loc=d3e1928-114920 + Details
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