v3.26.1
Goodwill - Summary of Possible Changes of Key Assumptions of Cash Generating Units (Detail) - Aggregate Not Significant Individual Goodwill [Member]
¥ in Thousands
12 Months Ended
Dec. 31, 2025
CNY (¥)
Dec. 31, 2024
CNY (¥)
Unfavourable Change [member]    
Disclosure Of Detailed Information Of Possible Changes Of Key Assumptions Of Cash Generating Units [Line Items]    
Change in assumption 0.0050 0.0050
Revenue growth rates (GAGR) [member] | Unfavourable Change [member]    
Disclosure Of Detailed Information Of Possible Changes Of Key Assumptions Of Cash Generating Units [Line Items]    
Change in assumption (0.0230) (0.0230)
Change in headroom ¥ (1,931,203) ¥ (2,463,604)
Headroom ¥ 2,566,485 ¥ 2,119,700
Revenue growth rates (GAGR) [member] | Favourable Change [member]    
Disclosure Of Detailed Information Of Possible Changes Of Key Assumptions Of Cash Generating Units [Line Items]    
Change in assumption 0.0230 0.0230
Change in headroom ¥ 2,105,965 ¥ 2,673,028
Headroom 6,603,653 7,256,332
Loan loss rates [member] | Unfavourable Change [member]    
Disclosure Of Detailed Information Of Possible Changes Of Key Assumptions Of Cash Generating Units [Line Items]    
Change in headroom (3,294,609) (3,906,215)
Headroom ¥ 1,203,079 ¥ 677,089
Loan loss rates [member] | Favourable Change [member]    
Disclosure Of Detailed Information Of Possible Changes Of Key Assumptions Of Cash Generating Units [Line Items]    
Change in assumption (0.0050) (0.0050)
Change in headroom ¥ 3,294,609 ¥ 3,906,215
Headroom ¥ 7,792,297 ¥ 8,489,519