Supplemental Financial Statement Data - Accumulated Other Comprehensive Income Roll Forward (Details) $ in Millions	6 Months Ended
	Jan. 03, 2020 USD ($)
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	$ 9,967
Ending balance	9,379
Actuarial Pension Gains (Losses)
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	(53)
Other comprehensive income (loss) before reclassifications	3
Amounts reclassified from accumulated other comprehensive income (loss)	0
Income tax benefit (expense) related to items of other comprehensive income (loss)	(1)
Net current-period other comprehensive income (loss)	2
Ending balance	(51)
Foreign Currency Translation Adjustment
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	4
Other comprehensive income (loss) before reclassifications	(10)
Amounts reclassified from accumulated other comprehensive income (loss)	0
Income tax benefit (expense) related to items of other comprehensive income (loss)	1
Net current-period other comprehensive income (loss)	(9)
Ending balance	(5)
Unrealized Gains (Losses) on Derivative Contracts
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	(19)
Other comprehensive income (loss) before reclassifications	(20)
Amounts reclassified from accumulated other comprehensive income (loss)	(19)
Income tax benefit (expense) related to items of other comprehensive income (loss)	4
Net current-period other comprehensive income (loss)	(35)
Ending balance	(54)
AOCI Attributable to Parent
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	(68)
Other comprehensive income (loss) before reclassifications	(27)
Amounts reclassified from accumulated other comprehensive income (loss)	(19)
Income tax benefit (expense) related to items of other comprehensive income (loss)	4
Net current-period other comprehensive income (loss)	(42)
Ending balance	$ (110)