Condensed Consolidating Financial Statements (Details 1) - USD ($) $ in Millions	12 Months Ended
	Jul. 03, 2015	Jun. 27, 2014	Jun. 28, 2013
Revenue from product sales and services
Revenue from product sales	$ 3,311.0	$ 3,189.0	$ 3,204.0
Revenue from services	1,772.0	1,823.0	1,908.0
Revenue from product sales and services	5,083.0	5,012.0	5,112.0
Cost of product sales and services
Cost of product sales	1,969.0	1,857.0	1,919.0
Cost of services	1,393.0	1,453.0	1,466.0
Total Cost	3,362.0	3,310.0	3,385.0
Engineering, selling and administrative expenses	1,008.0	820.0	914.0
Nonoperating income (loss)	(108.0)	4.0	(41.0)
Interest income	2.0	3.0	2.0
Interest expense	130.0	94.0	109.0
Income from continuing operations - as reported	477.0	795.0	665.0
Total provision for income tax	143.0	256.0	203.0
Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest	334.0	539.0	462.0
Discontinued operations, net of income taxes	0.0	(5.0)	(353.0)
Net income	334.0	534.0	109.0
Net Income (Loss) Attributable to Noncontrolling Interest	0.0	(1.0)	(4.0)
Net Income (Loss) Attributable to Parent	334.0	535.0	113.0
Other comprehensive income (loss), net of income taxes	(1.0)	44.0	(36.0)
Total comprehensive income (loss) attributable to Harris Corporation	333.0	579.0	77.0
Consolidation, Eliminations [Member]
Revenue from product sales and services
Revenue from product sales and services	0.0
Cost of product sales and services
Total Cost	0.0
Engineering, selling and administrative expenses	0.0
Intercompany income (expense), net	0.0
Nonoperating income (loss)	0.0
Interest income	0.0
Interest expense	0.0
Income from continuing operations - as reported	0.0		0.0
Equity in earnings (loss) of subsidiaries, net of income taxes	(31.0)	(200.0)	160.0
Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest	(31.0)	(200.0)	160.0
Discontinued operations, net of income taxes	0.0		0.0
Net income	(31.0)	(200.0)	160.0
Net Income (Loss) Attributable to Noncontrolling Interest	0.0		0.0
Net Income (Loss) Attributable to Parent	(31.0)	(200.0)	160.0
Other comprehensive income (loss), net of income taxes	31.0	200.0	(160.0)
Total comprehensive income (loss) attributable to Harris Corporation	0.0		0.0
Harris Parent Company [Member] | Financial Guarantee [Member]
Revenue from product sales and services
Revenue from product sales and services	3,531.0	3,531.0	3,606.0
Cost of product sales and services
Total Cost	2,229.0	2,213.0	2,333.0
Engineering, selling and administrative expenses	637.0	692.0	663.0
Intercompany income (expense), net	(13.0)	(41.0)	21.0
Nonoperating income (loss)	(117.0)	3.0	(42.0)
Interest income	1.0	1.0	0.0
Interest expense	126.0	93.0	108.0
Income from continuing operations - as reported	410.0	496.0	481.0
Total provision for income tax	105.0	155.0	144.0
Equity in earnings (loss) of subsidiaries, net of income taxes	29.0	200.0	(160.0)
Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest	334.0	541.0	177.0
Discontinued operations, net of income taxes	0.0	(7.0)	(68.0)
Net income	334.0	534.0	109.0
Net Income (Loss) Attributable to Noncontrolling Interest	0.0
Net Income (Loss) Attributable to Parent	334.0	534.0	109.0
Other comprehensive income (loss), net of income taxes	(59.0)	(181.0)	164.0
Total comprehensive income (loss) attributable to Harris Corporation	275.0	353.0	273.0
Exelis Parent Company [Member] | Financial Guarantee [Member]
Revenue from product sales and services
Revenue from product sales and services	222.0
Cost of product sales and services
Total Cost	164.0
Engineering, selling and administrative expenses	93.0
Intercompany income (expense), net	2.0
Nonoperating income (loss)	0.0
Interest income	0.0
Interest expense	2.0
Income from continuing operations - as reported	(35.0)
Total provision for income tax	(13.0)
Equity in earnings (loss) of subsidiaries, net of income taxes	2.0
Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest	(20.0)
Discontinued operations, net of income taxes	0.0
Net income	(20.0)
Net Income (Loss) Attributable to Noncontrolling Interest	0.0
Net Income (Loss) Attributable to Parent	(20.0)
Other comprehensive income (loss), net of income taxes	78.0
Total comprehensive income (loss) attributable to Harris Corporation	58.0
Non-Guarantor Subsidiaries [Member]
Revenue from product sales and services
Revenue from product sales and services	1,330.0	1,481.0	1,506.0
Cost of product sales and services
Total Cost	969.0	1,097.0	1,052.0
Engineering, selling and administrative expenses	278.0	128.0	251.0
Intercompany income (expense), net	11.0	41.0	(21.0)
Nonoperating income (loss)	9.0	1.0	1.0
Interest income	1.0	2.0	2.0
Interest expense	2.0	1.0	1.0
Income from continuing operations - as reported	102.0	299.0	184.0
Total provision for income tax	51.0	101.0	59.0
Equity in earnings (loss) of subsidiaries, net of income taxes	0.0		0.0
Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest	51.0	198.0	125.0
Discontinued operations, net of income taxes	0.0	2.0	(285.0)
Net income	51.0	200.0	(160.0)
Net Income (Loss) Attributable to Noncontrolling Interest	0.0	(1.0)	(4.0)
Net Income (Loss) Attributable to Parent	51.0	201.0	(156.0)
Other comprehensive income (loss), net of income taxes	(51.0)	25.0	(40.0)
Total comprehensive income (loss) attributable to Harris Corporation	$ 0.0	$ 226.0	$ (196.0)