Susequent Event (Details) (USD $) In Millions, unless otherwise specified		0 Months Ended	6 Months Ended	0 Months Ended	6 Months Ended	0 Months Ended
Aug. 01, 2012 Socialcam [Member]	Aug. 22, 2012 Maximum [Member]	Jan. 31, 2013 Maximum [Member]	Aug. 22, 2012 Minimum [Member]	Jan. 31, 2013 Minimum [Member]	Aug. 22, 2012 One-time Termination Benefits [Member] Maximum [Member]	Aug. 22, 2012 One-time Termination Benefits [Member] Minimum [Member]	Aug. 22, 2012 Facility Closing [Member] Maximum [Member]	Aug. 22, 2012 Facility Closing [Member] Minimum [Member]
Subsequent Event [Line Items]
Restructuring and Related Cost, Expected Cost		$ 60.0	$ 45.0	$ 50.0	$ 40.0	$ 52.0	$ 44.0	$ 8.0	$ 6.0
Business Acquisition, Cost of Acquired Entity, Purchase Price	$ 59.5

Amount expected to be charged against earnings in the current and future periods for the specified restructuring cost.

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

-Publisher SEC

-Name Staff Accounting Bulletin (SAB)

-Number Topic 5

-Section P

-Subsection 3, 4

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 420

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SAB Topic 5.P.4(b))

-URI http://asc.fasb.org/extlink&oid=6394695&loc=d3e140904-122747

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 146

-Paragraph 20

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Emerging Issues Task Force (EITF)

-Number 95-3

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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 5: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 420

-SubTopic 10

-Section 50

-Paragraph 1

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869

Name:	us-gaap_RestructuringAndRelatedCostExpectedCost
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration