Fair Value Measurements - Assets and Liabilities Measured on a Recurring Basis (Details) - USD ($) $ in Millions	Mar. 30, 2018	Jun. 30, 2017
Level 1 | Equity securities and mutual funds
Liabilities
Deferred compensation plan liabilities	$ 45	$ 46
Level 1 | Equity and fixed income securities
Assets
Deferred compensation plan assets	47	37
Fair Value
Assets
Deferred compensation plan assets	135	112
Investments measured at NAV, assets	88	75
Liabilities
Deferred compensation plan liabilities	150	126
Fair Value | Equity securities and mutual funds
Liabilities
Deferred compensation plan liabilities	45	46
Fair Value | Common/collective trusts and guaranteed investment contracts
Liabilities
Investments measured at NAV, liabilities	105	80
Fair Value | Equity and fixed income securities
Assets
Deferred compensation plan assets	47	37
Fair Value | Equity and fixed income funds
Assets
Investments measured at NAV, assets	62	50
Fair Value | Corporate-owned life insurance
Assets
Investments measured at NAV, assets	$ 26	$ 25