Fair Value Measurements (Details Textual) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Jun. 29, 2012	Jun. 29, 2012 Level 1 [Member] Fair Value, Measurements, Recurring [Member] 2016 Notes [Member]	Mar. 30, 2012 Level 1 [Member] Fair Value, Measurements, Recurring [Member] 2016 Notes [Member]	Jun. 29, 2012 Level 2 [Member] Fair Value, Measurements, Recurring [Member] 2020 Notes [Member]	Mar. 30, 2012 Level 2 [Member] Fair Value, Measurements, Recurring [Member] 2020 Notes [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of outstanding long-term debt related to the Senior Notes		$ 294.3	$ 298.4	$ 277.8	$ 280.2
Fair Value Measurements (Textual) [Abstract]
Interest on satellite in orbital performance obligation	7.00%
Period of in orbit performance incentive payments including interest	15 years