| **PENSION AND OTHER POSTRETIREMENT BENEFITS - Fair Value of Deferred Compensation Plans (Details) - USD ($) $ in Millions** | Jun. 29, 2018 | Jun. 30, 2017 | Jul. 01, 2016 |
|-----------------------------------------------------------------------------------------------------------------------------|---------------|---------------|---------------|
| **Assets**                                                                                                                  |          |          |          |
| Fair value of plan assets                                                                                                   | $ 5,305       | $ 5,133       | $ 4,489       |
| Investments Measured at NAV                                                                                                 | 1,240         | 920           |          |
| Level 1 | Equity securities and mutual funds                                                                                |          |          |          |
| **Liabilities**                                                                                                             |          |          |          |
| Fair value of plan liabilities                                                                                              | 38            | 46            |          |
| Level 1 | Equity and fixed income securities                                                                                |          |          |          |
| **Assets**                                                                                                                  |          |          |          |
| Fair value of plan assets                                                                                                   | 46            | 37            |          |
| Fair Value                                                                                                                  |          |          |          |
| **Assets**                                                                                                                  |          |          |          |
| Fair value of plan assets                                                                                                   | 136           | 112           |          |
| Investments Measured at NAV                                                                                                 | 90            | 75            |          |
| **Liabilities**                                                                                                             |          |          |          |
| Fair value of plan liabilities                                                                                              | 149           | 126           |          |
| Fair Value | Equity securities and mutual funds                                                                             |          |          |          |
| **Liabilities**                                                                                                             |          |          |          |
| Fair value of plan liabilities                                                                                              | 38            | 46            |          |
| Fair Value | Common/collective trusts and guaranteed investment contracts                                                   |          |          |          |
| **Liabilities**                                                                                                             |          |          |          |
| Investment measured at NAV liabilities                                                                                      | 111           | 80            |          |
| Fair Value | Equity and fixed income securities                                                                             |          |          |          |
| **Assets**                                                                                                                  |          |          |          |
| Fair value of plan assets                                                                                                   | 46            | 37            |          |
| Fair Value | Corporate-owned life insurance                                                                                 |          |          |          |
| **Assets**                                                                                                                  |          |          |          |
| Investments Measured at NAV                                                                                                 | 63            | 50            |          |
| Fair Value | Corporate-owned life insurance                                                                                 |          |          |          |
| **Assets**                                                                                                                  |          |          |          |
| Investments Measured at NAV                                                                                                 | $ 27          | $ 25          |          |

| X                                                                                                                                                                                                                                                                                             |
|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Alternative Investment, Fair Value Disclosure Liability
+ References
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| - Definition
Defined Benefit Plan, Fair Value of Plan Liabilities
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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.
+ References
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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.
+ References
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