Comprehensive Income (Loss) and Accumulated Other Comprehensive (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Mar. 30, 2012	Apr. 01, 2011	Mar. 30, 2012	Apr. 01, 2011	Jul. 01, 2011
Comprehensive Income
Net income (loss)	$ (354.1)	$ 139.2	$ (100.7)	$ 454.2
Other comprehensive income (loss):
Foreign currency translation	40.1	19.7	(10.9)	35.2
Net unrealized gain (loss) on hedging derivatives, net of income taxes	(0.2)	(0.2)	0.4	(0.3)
Net unrealized gain on securities available-for-sale, net of income taxes	0	0.6	0.3	0.7
Amortization of loss on treasury lock, net of income taxes	0.1	0.2	0.4	0.5
Recognition of pension actuarial losses in net income, net of income taxes	0.4	0.4	2.6	1.9
Total comprehensive income (loss)	(313.7)	159.9	(107.9)	492.2
Comprehensive loss attributable to noncontrolling interests	0.9	0.3	2.2	0.3
Total comprehensive income (loss) attributable to Harris Corporation	(312.8)	160.2	(105.7)	492.5
Components of accumulated other comprehensive loss
Foreign currency translation	39.9		39.9		50.8
Net unrealized gain (loss) on hedging derivatives, net of income taxes	0.3		0.3		(0.1)
Net unrealized gain on securities available-for-sale, net of income taxes	1.4		1.4		1.1
Unamortized loss on treasury lock, net of income taxes	(3.1)		(3.1)		(3.5)
Unrecognized pension obligations, net of income taxes	(27.0)		(27.0)		(29.6)
Accumulated other comprehensive income (loss)	$ 11.5		$ 11.5		$ 18.7