v3.26.1
Summary of Significant Accounting Policies - Additional Information (Detail)
12 Months Ended
Feb. 05, 2021
USD ($)
$ / shares
shares
Apr. 01, 2019
May 01, 2018
Dec. 31, 2025
CNY (¥)
Customer
Segment
Rate
shares
Dec. 31, 2025
USD ($)
Customer
Segment
Dec. 31, 2024
CNY (¥)
Customer
shares
Dec. 31, 2023
CNY (¥)
Customer
Dec. 31, 2025
USD ($)
$ / shares
Rate
shares
Schedule Of Organization And Summary Of Significant Accounting Policies [Line Items]                
Exchange rate of one US$ to RMB | Rate       699.31%       699.31%
Goodwill       ¥ 3,941,820,000   ¥ 3,941,820,000   $ 563,672,000
Goodwill, impairment loss | ¥       0   0 ¥ 0  
Deferred revenue, revenue recognized       ¥ 276,890,000 $ 39,590,000      
Revenue, practical expedient, incremental cost of obtaining contract       true true      
Advertising expenditures       ¥ 1,000,440,000 $ 143,060,000.00 1,288,540,000 1,429,060,000.00  
Segment Reporting, CODM, Individual Title and Position or Group Name [Extensible Enumeration]       srt:ChiefExecutiveOfficerMember srt:ChiefExecutiveOfficerMember      
Segment Reporting, Expense Information Used by CODM, Description       The CODM uses consolidated net income to evaluate return on assets and to monitor budget versus actual results. The competitive analysis and the monitoring of budgeted versus actual results are used in assessing the segment’s performance. The CODM uses consolidated net income to evaluate return on assets and to monitor budget versus actual results. The competitive analysis and the monitoring of budgeted versus actual results are used in assessing the segment’s performance.      
Number of operating segment | Segment       1 1      
Total expenses for employee benefits       ¥ 394,940,000 $ 56,480,000 ¥ 438,250,000 ¥ 435,450,000  
Foreign currency exchange rate appreciation (depreciation)       (4.40%) (4.40%) (2.70%) (2.90%)  
Weighted Average Remaining Lease Term       1 year 6 months 7 days   1 year 2 months 1 day   1 year 6 months 7 days
Weighted average discount rate       4.36%   4.83%   4.36%
Operating leases, rental expenses       ¥ 116,930,000 $ 16,720,000 ¥ 160,020,000.00 ¥ 157,530,000  
Common stock shares value       ¥ 8,659,000   ¥ 8,659,000   $ 1,238,000
Common stock shares authorised | shares       400,000,000,000   400,000,000,000   400,000,000,000
Common stock shares par value per share | $ / shares               $ 0.0025
Finance lease liability | ¥       ¥ 0   ¥ 0    
ADR [Member]                
Schedule Of Organization And Summary Of Significant Accounting Policies [Line Items]                
Common stock shares value | $ $ 1,000,000,000              
Common stock shares authorised | shares 400,000,000,000              
Common stock shares par value per share | $ / shares $ 0.0025              
Stock holders equity note stock split one ADS representing four ordinary shares              
Other income, net                
Schedule Of Organization And Summary Of Significant Accounting Policies [Line Items]                
Government grants       42,110,000 6,020,000.00 71,770,000 27,180,000  
Vat Refunds       169,900,000 $ 24,300,000 219,790,000 ¥ 233,920,000  
Credit Concentration Risk [Member]                
Schedule Of Organization And Summary Of Significant Accounting Policies [Line Items]                
Cash and cash equivalents, restricted cash and term deposits       ¥ 21,443,330,000   ¥ 23,409,100,000   $ 3,066,360,000
Credit Concentration Risk [Member] | Financial Institution One [Member] | Onshore China [Member]                
Schedule Of Organization And Summary Of Significant Accounting Policies [Line Items]                
Concentration risk percentage       13.30% 13.30%      
Credit Concentration Risk [Member] | Financial Institution Two [Member] | Onshore China [Member]                
Schedule Of Organization And Summary Of Significant Accounting Policies [Line Items]                
Concentration risk percentage       13.30% 13.30%      
Credit Concentration Risk [Member] | Financial Institution Three [Member] | Onshore China [Member]                
Schedule Of Organization And Summary Of Significant Accounting Policies [Line Items]                
Concentration risk percentage       12.40% 12.40%      
Credit Concentration Risk [Member] | Accounts Receivable [Member]                
Schedule Of Organization And Summary Of Significant Accounting Policies [Line Items]                
Number of customers represented greater than 10% | Customer       0 0 0    
Credit Concentration Risk [Member] | Accounts Receivable [Member] | Customer [Member]                
Schedule Of Organization And Summary Of Significant Accounting Policies [Line Items]                
Concentration risk percentage       10.00% 10.00% 10.00%    
Customer Concentration Risk [Member] | Net Revenues [Member]                
Schedule Of Organization And Summary Of Significant Accounting Policies [Line Items]                
Number of customers represented greater than 10% | Customer       0 0 0 0  
Customer Concentration Risk [Member] | Net Revenues [Member] | Customer [Member]                
Schedule Of Organization And Summary Of Significant Accounting Policies [Line Items]                
Concentration risk percentage       10.00% 10.00% 10.00% 10.00%  
Tianjin Autohome Software Co., Ltd. [Member] | Other income, net                
Schedule Of Organization And Summary Of Significant Accounting Policies [Line Items]                
Value added tax refund rate       10.00% 10.00%      
Leads Generation Services [Member] | Beijing Prbrownies Software Co., Ltd. | Other income, net                
Schedule Of Organization And Summary Of Significant Accounting Policies [Line Items]                
Value added tax rate       13.00% 13.00%      
Leads Generation Services [Member] | Beijing Prbrownies Software Co., Ltd. | Other income, net | Maximum [Member]                
Schedule Of Organization And Summary Of Significant Accounting Policies [Line Items]                
Value added tax rate after refund   3.00% 3.00%          
Leads Generation Services [Member] | Tianjin Autohome Software Co., Ltd. [Member] | Other income, net                
Schedule Of Organization And Summary Of Significant Accounting Policies [Line Items]                
Value added tax rate   13.00%            
Leads Generation Services [Member] | Tianjin Autohome Software Co., Ltd. [Member] | Other income, net | Maximum [Member]                
Schedule Of Organization And Summary Of Significant Accounting Policies [Line Items]                
Value added tax rate after refund       3.00% 3.00%