Basis of Presentation and Summary of Significant Accounting Policies (Narrative) (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended		9 Months Ended		12 Months Ended
	Apr. 03, 2020	Mar. 29, 2019	Apr. 03, 2020	Mar. 29, 2019	Jun. 28, 2019	Jun. 29, 2019
Schedule of Fiscal Years [Line Items]
Net income	$ 320	$ 195	$ 838	$ 1,029
Diluted (in dollars per share)	$ 1.22	$ 0.69	$ 3.15	$ 3.57
ROU assets	$ 107		$ 107
Current lease liabilities	14		14
Non-current lease liabilities	51		51
Service Life
Schedule of Fiscal Years [Line Items]
Net income	$ 38		$ 103
Diluted (in dollars per share)	$ 0.14		$ 0.39
Minimum
Schedule of Fiscal Years [Line Items]
Estimated useful lives change			three		three
Maximum
Schedule of Fiscal Years [Line Items]
Estimated useful lives change			seven		five
Accounting Standards Update 2016-02 [Member]
Schedule of Fiscal Years [Line Items]
ROU assets						$ 115
Current lease liabilities						17
Non-current lease liabilities						$ 57