| **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           |          |
| Corporate-owned life insurance                                                                              |          |          |          |
| **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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| - Definition
Fair value of investment other than investment in equity security, investment in debt security and equity method investment. Includes, but is not limited to, investment in certain entities that calculate net asset value per share. Example includes, but is not limited to, investment in hedge fund, venture capital fund, private equity fund, and real estate partnership or fund.
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| - Definition
Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.
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|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Amount of asset segregated and restricted to provide benefit under defined benefit plan. Asset includes, but is not limited to, stock, bond, other investment, earning from investment, and contribution by employer and employee.
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