Commitments - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended			1 Months Ended
	Apr. 04, 2014	Mar. 29, 2013	Mar. 30, 2012	May 31, 2013 Construction in Progress Satellite ViaSat-2 [Member] Capital Addition Purchase Commitments [Member]
Loss Contingencies [Line Items]
Purchase price under agreement				$ 358.0
Period of in-orbit satellite performance incentive payments, including interest	15 years
Satellite orbital performance payables current and non current	22.6
Satellite orbital performance payables current	2.0
Satellite orbital performance payables non current	20.6
Maximum contractual satellite orbital performance obligation	35.9
Future minimum payments under satellite performance incentives obligation for fiscal year 2015	1.9
Future minimum payments under satellite performance incentives obligation for fiscal year 2016	2.0
Future minimum payments under satellite performance incentives obligation for fiscal year 2017	2.1
Future minimum payments under satellite performance incentives obligation for fiscal year 2018	2.3
Future minimum payments under satellite performance incentives obligation for fiscal year 2019	2.4
Future minimum payments under satellite performance incentives obligation due after fifth year	25.2
Future minimum payments on various other purchase commitments under satellite capacity agreements for fiscal year 2015	37.5
Future minimum payments on various other purchase commitments under satellite capacity agreements for fiscal year 2016	2.6
Future minimum payments on various other purchase commitments under satellite capacity agreements for fiscal year 2017	0.3
Future minimum payments on various other purchase commitments under satellite capacity agreements for fiscal year 2018
Future minimum payments on various other purchase commitments under satellite capacity agreements for fiscal year 2019
Future minimum payments on various other purchase commitments under satellite capacity agreements thereafter
Description of operating lease arrangements	The Company leases office and other facilities under non-cancelable operating leases with initial terms ranging from one to fifteen years which expire between fiscal year 2015 and fiscal year 2024 and provide for pre-negotiated fixed rental rates during the terms of the lease. Certain of the Company's facilities leases contain option provisions which allow for extension of the lease terms.
Rent expense	$ 22.3	$ 19.9	$ 18.9