Condensed Consolidated Statement of Cash Flows (Unaudited) - USD ($) $ in Millions	3 Months Ended
	Sep. 29, 2017	Sep. 30, 2016
Statement of Cash Flows [Abstract]
Net income	$ 161	$ 160
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	40	53
Amortization of intangible assets from Exelis Inc. acquisition	25	33
Share-based compensation	11	11
Qualified pension plan contributions	0	(64)
Pension income	(34)	(24)
(Increase) decrease in:
Accounts receivable	(83)	(39)
Inventories	(56)	2
Increase (decrease) in:
Accounts payable	(88)	(90)
Advance payments and unearned income	12	(31)
Income taxes	126	63
Other	(19)	(31)
Net cash provided by operating activities	95	43
Investing Activities
Net additions of property, plant and equipment	(23)	(21)
Adjustment to proceeds from sale of business	0	(25)
Net cash used in investing activities	(23)	(46)
Financing Activities
Proceeds from borrowings	0	8
Repayments of borrowings	(35)	(38)
Proceeds from exercises of employee stock options	14	15
Repurchases of common stock	(75)	(100)
Cash dividends	(69)	(68)
Other financing activities	(9)	(18)
Net cash used in financing activities	(174)	(201)
Effect of exchange rate changes on cash and cash equivalents	6	1
Net decrease in cash and cash equivalents	(96)	(203)
Cash and cash equivalents, beginning of year	484	487
Cash and cash equivalents, end of quarter	$ 388	$ 284