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PENSION AND OTHER POSTRETIREMENT BENEFITS - Fair Value of Deferred Compensation Plans (Details) - Fair Value - USD ($) $ in Millions | Jun. 28, 2019 | Jun. 29, 2018
--- | --- | ---
Assets |  |
Fair value of deferred compensation plan assets | $ 127 | $ 136
Liabilities |  |
Fair value of deferred compensation plan liabilities | 157 | 149
Equity securities and mutual funds |  |
Liabilities |  |
Fair value of deferred compensation plan liabilities | 25 | 38
Equity and fixed income securities |  |
Assets |  |
Fair value of deferred compensation plan assets | 38 | 46
Level 1 | Equity securities and mutual funds |  |
Liabilities |  |
Fair value of deferred compensation plan liabilities | 25 | 38
Level 1 | Equity and fixed income securities |  |
Assets |  |
Fair value of deferred compensation plan assets | 38 | 46
Investments Measured at NAV |  |
Assets |  |
Fair value of deferred compensation plan assets | 89 | 90
Investments Measured at NAV | Common/collective trusts and guaranteed investment contracts |  |
Liabilities |  |
Fair value of deferred compensation plan liabilities | 132 | 111
Investments Measured at NAV | Equity securities and mutual funds |  |
Assets |  |
Fair value of deferred compensation plan assets | 61 | 63
Investments Measured at NAV | Corporate-owned life insurance |  |
Assets |  |
Fair value of deferred compensation plan assets | $ 28 | $ 27

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