Supplemental Financial Statement Data - Accumulated Other Comprehensive Income Roll Forward (Details) $ in Millions	6 Months Ended
Dec. 28, 2018 USD ($)
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	$ 11,531
Ending balance	10,912
Actuarial Pension Gains (Losses)
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	(19)
Other comprehensive income (loss) before reclassifications	1
Amounts reclassified from accumulated other comprehensive income	0
Income tax benefit related to items of other comprehensive loss	0
Net current-period other comprehensive loss	1
Ending balance	(18)
Foreign Currency Translation Adjustment
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	(21)
Other comprehensive income (loss) before reclassifications	(6)
Amounts reclassified from accumulated other comprehensive income	0
Income tax benefit related to items of other comprehensive loss	(1)
Net current-period other comprehensive loss	(7)
Ending balance	(28)
Unrealized Gains (Losses) on Derivative Contracts
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	1
Other comprehensive income (loss) before reclassifications	(5)
Amounts reclassified from accumulated other comprehensive income	11
Income tax benefit related to items of other comprehensive loss	4
Net current-period other comprehensive loss	10
Ending balance	11
AOCI Attributable to Parent
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance	(39)
Other comprehensive income (loss) before reclassifications	(10)
Amounts reclassified from accumulated other comprehensive income	11
Income tax benefit related to items of other comprehensive loss	3
Net current-period other comprehensive loss	4
Ending balance	$ (35)

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

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