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Supplemental Financial Statement Data - Accumulated Other Comprehensive Income Roll Forward (Details) - USD ($) $ in Millions	3 Months Ended
	Oct. 02, 2020	Oct. 04, 2019
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	$ 9,551	$ 9,967
Income tax benefit (expense) related to items of other comprehensive loss	(7)	5
Net current-period other comprehensive loss	56	(22)
Ending balance	9,576	9,566
Actuarial Pension Gains (Losses)
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	(58)
Other comprehensive loss before reclassifications	1
Amounts reclassified from accumulated other comprehensive loss	0
Income tax benefit (expense) related to items of other comprehensive loss	0
Net current-period other comprehensive loss	1
Ending balance	(57)
Foreign Currency Translation Adjustment
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	(2)
Other comprehensive loss before reclassifications	32
Amounts reclassified from accumulated other comprehensive loss	0
Income tax benefit (expense) related to items of other comprehensive loss	0
Net current-period other comprehensive loss	32
Ending balance	30
Unrealized Gains (Losses) on Derivative Contracts
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	(97)
Other comprehensive loss before reclassifications	18
Amounts reclassified from accumulated other comprehensive loss	12
Income tax benefit (expense) related to items of other comprehensive loss	(7)
Net current-period other comprehensive loss	23
Ending balance	(74)
Accumulated Other Comprehensive Income (Loss)
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	(157)	(68)
Other comprehensive loss before reclassifications	51
Amounts reclassified from accumulated other comprehensive loss	12
Income tax benefit (expense) related to items of other comprehensive loss	(7)
Net current-period other comprehensive loss	56
Ending balance	$ (101)	$ (90)

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