Changes in Estimates (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended
	Sep. 27, 2019	Sep. 28, 2018
Change in Accounting Estimate [Line Items]
Revenue recognized from performance obligations satisfied in prior periods	$ 73	$ 7
Contracts Accounted for under Percentage of Completion
Change in Accounting Estimate [Line Items]
Operating income (loss)	62	(3)
Operating income (loss), net of tax	$ 46	$ (2)
Operating income (loss), per diluted share (in dollars per share)	$ 0.20	$ (0.02)