Acquisitions (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		3 Months Ended
Aug. 30, 2013 Neolane [Member]	Jul. 22, 2013 Neolane [Member]	Mar. 01, 2013 Behance [Member]	Dec. 20, 2012 Behance [Member]
Business Acquisition [Line Items]
Business acquisition, purchase price		$ 616.7		$ 111.1
Purchase price allocation, goodwill	515.2		91.4
Purchase price allocation, identifiable intangible assets		115.0		28.5
Purchase price allocation, net liabilities assumed		$ 13.5		$ 8.8

BusinessAcquisitionPurchasePrice

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- Details

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- Definition

The amount of identifiable intangible assets recognized as of the acquisition date.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 805

-SubTopic 20

-Section 50

-Paragraph 1

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=6910749&loc=d3e4845-128472

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 805

-SubTopic 10

-Section 55

-Paragraph 37

-URI http://asc.fasb.org/extlink&oid=25498275&loc=d3e2207-128464

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- Definition

Amount of liabilities assumed at the acquisition date.

+ References

+ Details

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- Definition

Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 20

-Section 50

-Paragraph 1

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=14024403&loc=d3e13816-109267

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