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PENSION AND OTHER POSTRETIREMENT BENEFITS - Fair Value of Plan Assets (Details) - USD ($) $ in Millions | Jun. 29, 2018 | Jun. 30, 2017 | Jul. 01, 2016
--- | --- | --- | ---
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets, gross | $ 4,069 | $ 4,115 |
Investments Measured at NAV | 1,240 | 920 |
(Payables)/Receivables, net | (4) | 98 |
Total fair value of plan assets | 5,305 | 5,133 | $ 4,489
Domestic equities |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets, gross | 1,221 | 1,062 |
International equities |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets, gross | 903 | 838 |
Private equity funds |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets, gross | 401 | 522 |
Hedge funds |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets, gross | 187 | 242 |
Investments Measured at NAV | 208 |  |
Corporate bonds |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets, gross | 812 | 611 |
Government securities |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets, gross | 335 | 241 |
Other |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets, gross | 1 | 2 |
Cash and cash equivalents |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets, gross | 209 | 597 |
Equity and fixed income funds |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Investments Measured at NAV | 714 | 632 |
Fixed Income funds |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Investments Measured at NAV | 318 | 288 |
Level 1 |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets, gross | 2,094 | 1,867 |
Level 1 | Domestic equities |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets, gross | 1,189 | 1,032 |
Level 1 | International equities |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets, gross | 899 | 834 |
Level 1 | Private equity funds |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets, gross | 0 | 0 |
Level 1 | Hedge funds |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets, gross | 0 | 0 |
Level 1 | Corporate bonds |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets, gross | 0 | 0 |
Level 1 | Government securities |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets, gross | 0 | 0 |
Level 1 | Other |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets, gross | 0 | 0 |
Level 1 | Cash and cash equivalents |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets, gross | 6 | 1 |
Level 2 |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets, gross | 1,375 | 1,482 |
Level 2 | Domestic equities |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets, gross | 32 | 30 |
Level 2 | International equities |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets, gross | 4 | 4 |
Level 2 | Private equity funds |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets, gross | 0 | 0 |
Level 2 | Hedge funds |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets, gross | 0 | 0 |
Level 2 | Corporate bonds |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets, gross | 801 | 611 |
Level 2 | Government securities |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets, gross | 335 | 241 |
Level 2 | Other |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets, gross | 0 | 0 |
Level 2 | Cash and cash equivalents |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets, gross | 203 | 596 |
Level 3 |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets, gross | 600 | 766 |
Total fair value of plan assets | 600 | 766 | 984
Level 3 | Domestic equities |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets, gross | 0 | 0 |
Level 3 | International equities |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets, gross | 0 | 0 |
Level 3 | Private equity funds |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets, gross | 401 | 522 |
Total fair value of plan assets | 400 | 522 | 700
Level 3 | Hedge funds |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets, gross | 187 | 242 |
Total fair value of plan assets | 187 | 242 | 282
Level 3 | Corporate bonds |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets, gross | 11 | 0 |
Level 3 | Government securities |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets, gross | 0 | 0 |
Level 3 | Other |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets, gross | 1 | 2 |
Total fair value of plan assets | 2 | 2 | 2
Level 3 | Cash and cash equivalents |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Fair value of plan assets, gross | 0 | 0 |
Level 3 | Fixed Income funds |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Total fair value of plan assets | $ 11 | $ 0 | $ 0

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