Supplemental Financial Statement Data - Accumulated Other Comprehensive Income Roll Forward (Details) $ in Millions	3 Months Ended
	Oct. 04, 2019 USD ($)
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	$ 9,967
Ending balance	9,566
Actuarial Pension Gains (Losses)
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	(53)
Other comprehensive income (loss) before reclassifications	1
Amounts reclassified from accumulated other comprehensive income (loss)	0
Income tax benefit (expense) related to items of other comprehensive income (loss)	0
Net current-period other comprehensive loss	1
Ending balance	(52)
Foreign Currency Translation Adjustment
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	4
Other comprehensive income (loss) before reclassifications	5
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 loss	4
Ending balance	8
Unrealized Gains (Losses) on Derivative Contracts
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	(19)
Other comprehensive income (loss) before reclassifications	(26)
Amounts reclassified from accumulated other comprehensive income (loss)	(7)
Income tax benefit (expense) related to items of other comprehensive income (loss)	6
Net current-period other comprehensive loss	(27)
Ending balance	(46)
AOCI Attributable to Parent
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	(68)
Other comprehensive income (loss) before reclassifications	(20)
Amounts reclassified from accumulated other comprehensive income (loss)	(7)
Income tax benefit (expense) related to items of other comprehensive income (loss)	5
Net current-period other comprehensive loss	(22)
Ending balance	$ (90)