Supplemental Financial Statement Data - Accumulated Other Comprehensive Income Roll Forward (Details) - USD ($) $ in Millions	12 Months Ended
Jul. 03, 2020	Jun. 28, 2019
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	$ 9,967	$ 11,531
Ending balance	9,551	9,967
Actuarial Pension Gains (Losses)
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	(53)	(19)
Other comprehensive loss before reclassifications	(1)	(39)
Amounts reclassified from accumulated other comprehensive loss	0	0
Income tax benefit (expense) related to items of other comprehensive loss	(4)	5
Net current-period other comprehensive loss	(5)	(34)
Ending balance	(58)	(53)
Foreign Currency Translation Adjustment
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	4	(21)
Other comprehensive loss before reclassifications	(7)	28
Amounts reclassified from accumulated other comprehensive loss	0	0
Income tax benefit (expense) related to items of other comprehensive loss	1	(3)
Net current-period other comprehensive loss	(6)	25
Ending balance	(2)	4
Unrealized Gains (Losses) on Derivative Contracts
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	(19)	1
Other comprehensive loss before reclassifications	(87)	(48)
Amounts reclassified from accumulated other comprehensive loss	(6)	9
Income tax benefit (expense) related to items of other comprehensive loss	15	19
Net current-period other comprehensive loss	(78)	(20)
Ending balance	(97)	(19)
AOCI Attributable to Parent
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	(68)	(39)
Other comprehensive loss before reclassifications	(95)	(59)
Amounts reclassified from accumulated other comprehensive loss	(6)	9
Income tax benefit (expense) related to items of other comprehensive loss	12	21
Net current-period other comprehensive loss	(89)	(29)
Ending balance	$ (157)	$ (68)

Amount before tax and reclassification adjustments of other comprehensive income (loss) attributable to parent.

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