Commitments (Details Textual) (USD $) In Millions, unless otherwise specified	12 Months Ended
Mar. 31, 2012	Apr. 02, 2011	Apr. 03, 2010
Commitments (Textual) [Abstract]
Aggregate future rental income to be received	$ 7.1
Rent expense, net of rental income	3.1	4.9	5.3
Other commitments	102.4
Non-cancellable license obligations	26.6
Maximum future commitment to acquire licenses to intellectual property until July 2023	$ 5.0

Future minimum rental payments in aggregate as of the balance sheet date under operating leases.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 13

-Paragraph 23

-Subparagraph b(ii)

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 840

-SubTopic 20

-Section 50

-Paragraph 4

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=6454179&loc=d3e41551-112718

Name:	us-gaap_OperatingLeasesFutureMinimumPaymentsReceivable
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant