CONDENSED CONSOLIDATED STATEMENT OF CASH FLOWS - USD ($) $ in Millions	3 Months Ended
	Sep. 27, 2019	Sep. 28, 2018
Statement of Cash Flows [Abstract]
Net income	$ 435	$ 213
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	201	65
Share-based compensation	143	38
Qualified pension plan contributions	(327)	0
Pension and other postretirement benefit plan income	(58)	(38)
Gain on sale of business, net	(229)	0
Gain on sale of asset group	(12)	0
Deferred income taxes	0	9
(Increase) decrease in:
Accounts receivable	31	34
Contract assets	(110)	(88)
Inventories	75	(3)
Increase (decrease) in:
Accounts payable	0	(141)
Contract liabilities	(7)	38
Compensation and benefits	37	(16)
Income taxes	(28)	28
Other accrued items	7	(6)
Other	(77)	(16)
Net cash provided by operating activities	81	117
Investing Activities
Net additions of property, plant and equipment	(84)	(31)
Proceeds from sale of business, net	346	0
Net cash acquired in L3Harris Merger	1,132	0
Proceeds from sale of asset group	20	0
Net cash provided by (used in) investing activities	1,414	(31)
Financing Activities
Net proceeds from borrowings	3	216
Repayments of borrowings	(100)	0
Proceeds from exercises of employee stock options	95	15
Repurchases of common stock	(750)	(200)
Cash dividends	(177)	(82)
Other financing activities	(85)	(18)
Net cash used in financing activities	(1,014)	(69)
Effect of exchange rate changes on cash and cash equivalents	(10)	0
Net increase in cash and cash equivalents	471	17
Cash and cash equivalents, beginning of year	530	288
Cash and cash equivalents, end of quarter	$ 1,001	$ 305