Goodwill (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Sep. 27, 2014 Item		Jun. 28, 2014
Changes in goodwill
Balance at the beginning of the period	$ 267.0
Currency translation and other adjustments	(2.8)
Balance at the end of the period	264.2		267.0
Number of reporting units	2
Impairment of Goodwill
Impairment of goodwill	0		0
Network Enablement
Changes in goodwill
Balance at the beginning of the period	158.0	[1]
Currency translation and other adjustments	(1.6)	[1]
Balance at the end of the period	156.4	[1]
Service Enablement
Changes in goodwill
Balance at the beginning of the period	94.8	[1]
Currency translation and other adjustments	(0.9)	[1]
Balance at the end of the period	93.9	[1]
Optical Security and Performance Products
Changes in goodwill
Balance at the beginning of the period	8.3
Currency translation and other adjustments	0
Balance at the end of the period	8.3
Communications and Commercial Optical Products
Changes in goodwill
Balance at the beginning of the period	5.9	[2]
Currency translation and other adjustments	(0.3)	[2]
Balance at the end of the period	$ 5.6	[2]

[1] In the first quarter of fiscal 2015, the Company reorganized its NSE reportable segment into two separate reportable segments, NE and SE. The goodwill of NSE was allocated between the two new segments based on their relative fair value as of June 29, 2014, the first day of fiscal 2015. The Company determined that based on its cash flow structure, organizational structure and the financial information provided to and reviewed by Management, NE and SE also represented new reporting units for fiscal 2015. Refer to “Note. 16. Operating Segments” for more information.

[2] The goodwill balance as of September 27, 2014 for the CCOP segment relates to the acquisition of Time-Bandwidth and has been allocated to the Lasers reporting unit.