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Revenues - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Dec. 28, 2018	Dec. 29, 2017	Dec. 28, 2018	Dec. 29, 2017	Jun. 30, 2018
Concentration Risk [Line Items]
Contract with customer, liability	$ 53		$ 53		$ 120
Contract with customer, liability, revenue recognized			80
Revenue, remaining performance obligation, amount	$ 220		$ 220
Revenue from Contract with Customer | Customer Concentration Risk | Top Ten Customers
Concentration Risk [Line Items]
Concentration risk, percentage	47.00%	42.00%	47.00%	41.00%

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