Basis of Presentation, Nature of Operations and Summary of Significant Accounting Policies Investments Policy (Details) (USD $)	12 Months Ended
Dec. 29, 2012	Apr. 02, 2012
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Maximum Time Until Maturity of Long-term Available-for-Sale Investments	2 years 0 months 0 days
Held-to-maturity Securities, Transferred Security, at Carrying Value		$ 1,000,000,000
Held-to-maturity Securities, Transferred to Available-for-sale Securities, Unrealized Gain		700,000
Held-to-maturity Securities, Transferred to Available-for-sale Securities, Unrealized Loss		$ 700,000

For any transfer of securities categorized as held-to-maturity, this item represents the net carrying amount of the transferred security to another category of investments in debt and equity securities (trading or available-for-sale).

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 115

-Paragraph 22

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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 320

-SubTopic 10

-Section 50

-Paragraph 10

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=6872113&loc=d3e27405-111563

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