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