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PENSION AND OTHER POSTRETIREMENT BENEFITS - Funded Status of Defined Benefit Plans (Details) - USD ($) $ in Millions | Jun. 28, 2019 | Jun. 29, 2018 | Jun. 30, 2017
--- | --- | --- | ---
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | $ 5,159 | $ 5,305 | $ 5,133
Projected benefit obligation | (6,344) | (6,007) | (6,405)
Funded status | (1,185) | (702) |
Other non-current assets |  |  |
Consolidated Balance Sheet line item amounts: |  |  |
Other non-current assets | 12 | 15 |
Compensation and benefits |  |  |
Consolidated Balance Sheet line item amounts: |  |  |
Compensation and benefits | (7) | (3) |
Liabilities of disposal group held for sale |  |  |
Consolidated Balance Sheet line item amounts: |  |  |
Compensation and benefits | (16) | 0 |
Defined benefit plans |  |  |
Consolidated Balance Sheet line item amounts: |  |  |
Defined benefit plans | (1,174) | (714) |
Pension |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 4,958 | 5,098 | 4,921
Projected benefit obligation | (6,123) | (5,774) | (6,140)
Funded status | (1,165) | (676) |
Pension | Other non-current assets |  |  |
Consolidated Balance Sheet line item amounts: |  |  |
Other non-current assets | 12 | 15 |
Pension | Compensation and benefits |  |  |
Consolidated Balance Sheet line item amounts: |  |  |
Compensation and benefits | (7) | (2) |
Pension | Liabilities of disposal group held for sale |  |  |
Consolidated Balance Sheet line item amounts: |  |  |
Compensation and benefits | (16) | 0 |
Pension | Defined benefit plans |  |  |
Consolidated Balance Sheet line item amounts: |  |  |
Defined benefit plans | (1,154) | (689) |
Other Benefits |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets | 201 | 207 | 212
Projected benefit obligation | (221) | (233) | $ (265)
Funded status | (20) | (26) |
Other Benefits | Other non-current assets |  |  |
Consolidated Balance Sheet line item amounts: |  |  |
Other non-current assets | 0 | 0 |
Other Benefits | Compensation and benefits |  |  |
Consolidated Balance Sheet line item amounts: |  |  |
Compensation and benefits | 0 | (1) |
Other Benefits | Liabilities of disposal group held for sale |  |  |
Consolidated Balance Sheet line item amounts: |  |  |
Compensation and benefits | 0 | 0 |
Other Benefits | Defined benefit plans |  |  |
Consolidated Balance Sheet line item amounts: |  |  |
Defined benefit plans | $ (20) | $ (25) |

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