Fair Value Measurements - Assets and Liabilities Measured on a Recurring Basis (Details) - Fair Value - USD ($) $ in Millions	Mar. 29, 2019	Jun. 29, 2018
Assets
Deferred compensation plan assets	$ 127	$ 136
Liabilities
Deferred compensation plan liabilities	152	149
Yield-based treasury lock
Liabilities
Derivative instruments liability	11	0
Equity securities and mutual funds
Liabilities
Deferred compensation plan liabilities	22	38
Common/collective trusts and guaranteed investment contracts
Liabilities
Investments measured at NAV liabilities	130	111
Equity and fixed income securities
Assets
Deferred compensation plan assets	39	46
Equity and fixed income funds
Assets
Investments measured at NAV assets	61	63
Corporate-owned life insurance
Assets
Investments measured at NAV assets	27	27
Level 1 | Yield-based treasury lock
Liabilities
Derivative instruments liability	0	0
Level 1 | Equity securities and mutual funds
Liabilities
Deferred compensation plan liabilities	22	38
Level 1 | Equity and fixed income securities
Assets
Deferred compensation plan assets	39	46
Level 2 | Yield-based treasury lock
Liabilities
Derivative instruments liability	11	0
Level 2 | Equity securities and mutual funds
Liabilities
Deferred compensation plan liabilities	0	0
Level 2 | Equity and fixed income securities
Assets
Deferred compensation plan assets	$ 0	$ 0