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Document and Entity Information (USD $)
12 Months Ended
Dec. 31, 2011
Jun. 30, 2011
Jan. 19, 2012
Class A Common Stock
Jan. 19, 2012
Class B Common Stock
Document Information [Line Items]        
Document Type 10-K      
Amendment Flag false      
Document Period End Date Dec. 31, 2011      
Document Fiscal Year Focus 2011      
Document Fiscal Period Focus FY      
Trading Symbol GOOG      
Entity Registrant Name Google Inc.      
Entity Central Index Key 0001288776      
Current Fiscal Year End Date --12-31      
Entity Well-known Seasoned Issuer Yes      
Entity Current Reporting Status Yes      
Entity Voluntary Filers No      
Entity Filer Category Large Accelerated Filer      
Entity Public Float   $ 114,824,568,582    
Entity Common Stock, Shares Outstanding     257,960,636 67,175,694