v3.10.0.1
Document and Entity Information
9 Months Ended
Sep. 30, 2018
Document And Entity Information [Abstract]  
Document Type 6-K
Amendment Flag false
Document Period End Date Sep. 30, 2018
Document Fiscal Year Focus 2018
Document Fiscal Period Focus Q3
Trading Symbol BIDU
Entity Registrant Name Baidu, Inc.
Entity Central Index Key 0001329099
Current Fiscal Year End Date --12-31