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PENSION AND OTHER POSTRETIREMENT BENEFITS - Income Statement Information (Details) - USD ($) $ in Millions | 6 Months Ended | 12 Months Ended
--- | --- | ---
Jan. 03, 2020 | Jun. 28, 2019 | Jun. 29, 2018 | Jun. 30, 2017
Net periodic benefit income |  |  |  |
Effect of curtailments or settlements | $ (23) | $ 0 | $ 0 | $ 0
Pension |  |  |  |
Net periodic benefit income |  |  |  |
Service cost | 42 | 36 | 39 | 58
Interest cost | 149 | 209 | 195 | 184
Expected return on plan assets | (314) | (382) | (369) | (340)
Amortization of net actuarial loss (gain) | 1 | 0 | 0 | 1
Amortization of prior service credit | (5) | 0 | 0 | 0
Effect of curtailments or settlements | (18) | 1 | 0 | 0
Net periodic benefit income | (145) | (136) | (135) | (97)
Other changes in plan assets and benefit obligations recognized in other comprehensive loss |  |  |  |
Net actuarial loss (gain) | 55 | 625 | (106) | (284)
Prior service (credit) cost | (292) | 3 | 2 | 0
Amortization of net actuarial gain (loss) | (5) | 0 | 0 | (1)
Amortization of prior service credit (cost) | 5 | (1) | 0 | 0
Recognized net loss due to divestiture | (13) | 0 | 0 | 0
Total change recognized in other comprehensive loss | (250) | 627 | (104) | (285)
Total impact from net periodic benefit cost and changes in other comprehensive loss | (395) | 491 | (239) | (382)
Pension | U.S. | L3 |  |  |  |
Net periodic benefit income |  |  |  |
Effect of curtailments or settlements | (23) |  |  |
Other Benefits |  |  |  |
Net periodic benefit income |  |  |  |
Service cost | 1 | 0 | 1 | 1
Interest cost | 5 | 8 | 7 | 8
Expected return on plan assets | (10) | (16) | (16) | (17)
Amortization of net actuarial loss (gain) | (3) | (6) | (1) | 0
Effect of curtailments or settlements | 5 |  |  |
Net periodic benefit income | (7) | (14) | (9) | (8)
Other changes in plan assets and benefit obligations recognized in other comprehensive loss |  |  |  |
Net actuarial loss (gain) | (1) | 4 | (20) | (38)
Amortization of net actuarial gain (loss) | 3 | 6 | 1 | 0
Total change recognized in other comprehensive loss | 2 | 10 | (19) | (38)
Total impact from net periodic benefit cost and changes in other comprehensive loss | $ (5) | $ (4) | $ (28) | $ (46)

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