GOODWILL (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Jul. 01, 2016	Jun. 30, 2017	Jul. 01, 2016	Jul. 03, 2015	Mar. 31, 2017	Dec. 30, 2016
Goodwill [Roll Forward]
Goodwill, Beginning Balance		$ 5,352	$ 5,405
Decrease from reclassification to assets of discontinued operations and divestitures			(61)	$ (943)
Transfer of goodwill in segment realignment				0
Currency translation adjustments		(3)	(40)
Other (including adjustments to previously estimated fair value of assets acquired and liabilities assumed)		17	48
Goodwill, Ending Balance	$ 5,352	5,366	5,352	5,405
Goodwill, discontinued operations	623	0	623
Aerostructures
Goodwill [Roll Forward]
Decrease from reclassification to assets of discontinued operations and divestitures	(61)
As Reported
Goodwill [Roll Forward]
Goodwill, Beginning Balance			6,348
Goodwill, Ending Balance				6,348
Communication Systems
Goodwill [Roll Forward]
Goodwill, Beginning Balance		781	760
Decrease from reclassification to assets of discontinued operations and divestitures			0	0
Transfer of goodwill in segment realignment				0
Currency translation adjustments		2	7
Other (including adjustments to previously estimated fair value of assets acquired and liabilities assumed)		2	14
Goodwill, Ending Balance	781	785	781	760
Communication Systems | As Reported
Goodwill [Roll Forward]
Goodwill, Beginning Balance			760
Goodwill, Ending Balance				760
Electronic Systems
Goodwill [Roll Forward]
Goodwill, Beginning Balance		3,093	3,199
Decrease from reclassification to assets of discontinued operations and divestitures			(61)	0
Transfer of goodwill in segment realignment				1,481
Currency translation adjustments		(4)	(46)
Other (including adjustments to previously estimated fair value of assets acquired and liabilities assumed)		15	1
Goodwill, Ending Balance	3,093	3,104	3,093	3,199
Electronic Systems | Caprock | Discontinued Operations, Disposed of by Sale
Goodwill [Roll Forward]
Other (including adjustments to previously estimated fair value of assets acquired and liabilities assumed)				1,481
Goodwill, discontinued operations					$ 1,443
Electronic Systems | As Reported
Goodwill [Roll Forward]
Goodwill, Beginning Balance			1,718
Goodwill, Ending Balance				1,718
Space and Intelligence Systems
Goodwill [Roll Forward]
Goodwill, Beginning Balance		1,478	1,446
Decrease from reclassification to assets of discontinued operations and divestitures			0	0
Transfer of goodwill in segment realignment				0
Currency translation adjustments		(1)	(1)
Other (including adjustments to previously estimated fair value of assets acquired and liabilities assumed)		0	33
Goodwill, Ending Balance	1,478	1,477	1,478	1,446
Space and Intelligence Systems | As Reported
Goodwill [Roll Forward]
Goodwill, Beginning Balance			1,446
Goodwill, Ending Balance				1,446
Critical Networks
Goodwill [Roll Forward]
Goodwill, Beginning Balance		0	0
Decrease from reclassification to assets of discontinued operations and divestitures			0	(943)
Transfer of goodwill in segment realignment				(1,481)
Currency translation adjustments		0	0
Other (including adjustments to previously estimated fair value of assets acquired and liabilities assumed)		0	0
Goodwill, Ending Balance	$ 0	$ 0	0	0
Critical Networks | Caprock | Discontinued Operations, Disposed of by Sale
Goodwill [Roll Forward]
Other (including adjustments to previously estimated fair value of assets acquired and liabilities assumed)				449
Goodwill, discontinued operations						$ 136
Critical Networks | IT Services | Discontinued Operations, Disposed of by Sale
Goodwill [Roll Forward]
Other (including adjustments to previously estimated fair value of assets acquired and liabilities assumed)				494
Goodwill assigned to disposal group					$ 487
Critical Networks | As Reported
Goodwill [Roll Forward]
Goodwill, Beginning Balance			$ 2,424
Goodwill, Ending Balance				$ 2,424