Operating Segments (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Sep. 29, 2012	Oct. 01, 2011
Net revenue:
Deferred revenue related to purchase accounting adjustment		$ (0.3)
Net revenue	420.9	415.8
Unallocated amounts:
Stock based compensation	(12.6)	(11.5)
Acquisition-related charges and amortization of intangibles	(21.4)	(19.7)
(Loss) gain on disposal and impairment of long-lived assets	(1.3)	(0.5)
Restructuring and related charges	(2.7)	(1.5)
Realignment and other charges	(0.6)	(7.8)
Interest and other income	(0.5)	(0.1)
Interest expense	(6.1)	(6.6)
Gain on sale of investments	0.1	1.1
Loss from continuing operations before income taxes	(6.4)	(0.2)
Communications Test and Measurement
Net revenue:
Net Revenue	169.5	185.2
Operating income (loss):
Total operating income	16.8	24.1
Communications and Commercial Optical Products
Net revenue:
Net Revenue	194.9	180.3
Operating income (loss):
Total operating income	23.8	25.6
Unallocated amounts:
Restructuring and related charges	(0.6)
Optical Security and Performance Products
Net revenue:
Net Revenue	56.5	50.6
Operating income (loss):
Total operating income	21.2	17.7
Corporate
Operating income (loss):
Total operating income	(23.1)	(21.0)
Operating Segments
Operating income (loss):
Total operating income	$ 38.7	$ 46.4