v3.26.1
Schedule I-Condensed Financial Information of the Parent Company - Statements of Cash Flows and Notes (Details)
$ / shares in Units, ¥ in Thousands, $ in Thousands
 2 Months Ended 12 Months Ended
Feb. 26, 2026
CNY (¥)
Feb. 26, 2026
USD ($)
$ / shares
Dec. 31, 2025
CNY (¥)
Dec. 31, 2025
USD ($)
Dec. 31, 2024
CNY (¥)
Dec. 31, 2024
USD ($)
Dec. 31, 2023
CNY (¥)
Cash flow from operating activities:              
Net income     ¥ 7,409,639 $ 1,059,566 ¥ 7,838,945   ¥ 8,201,299
Adjustments to reconcile net income to net cash by operating activities:              
Equity income of subsidiaries and VIEs     (293,919) (42,030) (166,980)   (80,301)
Changes in operating assets and liabilities:              
Other receivables and prepayments, net     (340,829) (48,738) (185,599)   12,613
Accrued expenses and other current liabilities     (216,349) (30,938) (356,287)   666,260
Net cash generated from operating activities     7,454,245 1,065,943 9,128,983   14,414,513
Cash flows from investing activities:              
Net cash used in investing activities     (8,297,050) (1,186,464) (3,565,550)   (5,160,337)
Cash flows from financing activities:              
Repurchase of ordinary shares     (4,940,778) (706,522) (3,865,781)   (5,106,944)
Proceeds from bank borrowings     13,151,312 1,880,613 6,399,917   2,093,483
Dividend distribution to shareholders     (1,795,384) (256,736) (1,684,721)    
Proceeds from issuance of ordinary shares upon exercise of share options     1,341 192 249    
Net cash used in financing activities     (1,935,572) (276,783) (4,969,579)   (6,146,005)
Effect of exchange rate changes on cash and cash equivalents     (52,962) (7,573) 63,283   85,794
Net increase (decrease) in cash, cash equivalents and restricted cash     (2,831,339) (404,877) 657,137   3,193,965
Cash, cash equivalents and restricted cash at beginning of the year ¥ 24,123,164 $ 3,449,566 26,954,503 3,854,443 26,297,366   23,103,401
Cash, cash equivalents and restricted cash at end of the year     24,123,164 3,449,566 26,954,503 $ 3,854,443 26,297,366
Subsequent event | O 2026 A Dividends              
Restriction on dividend distribution              
Dividends Payable, Date Declared Feb. 26, 2026 Feb. 26, 2026          
Dividends payable date of record Apr. 10, 2026 Apr. 10, 2026          
Common stock dividends per share declared   $ 3.1          
Subsequent event | O 2026 A Dividends | ADS              
Restriction on dividend distribution              
Common stock dividends per share declared   0.62          
Reportable legal entities | Subsequent event | O 2026 A Dividends              
Restriction on dividend distribution              
Common stock dividends per share declared   3.1          
Reportable legal entities | Subsequent event | O 2026 A Dividends | ADS              
Restriction on dividend distribution              
Common stock dividends per share declared   $ 0.62          
Parent company | Reportable legal entities              
Cash flow from operating activities:              
Net income     7,242,490 1,035,664 7,739,935   8,116,624
Adjustments to reconcile net income to net cash by operating activities:              
Equity income of subsidiaries and VIEs     (7,204,058) (1,030,169) (7,757,671)   (8,090,266)
Dividend received from subsidiaries and VIEs     1,768,685 252,919 1,681,107    
Changes in operating assets and liabilities:              
Other receivables and prepayments, net     281 40 (50)   (3,374)
Accrued expenses and other current liabilities     48,289 6,905 (372)   (3,634)
Net cash generated from operating activities     1,855,687 265,359 1,662,949   19,350
Cash flows from investing activities:              
Changes in amounts due from/to subsidiaries     3,455,393 494,115 3,887,078   5,086,910
Net cash used in investing activities     3,455,393 494,115 3,887,078   5,086,910
Cash flows from financing activities:              
Repurchase of ordinary shares     (4,940,778) (706,522) (3,865,781)   (5,106,944)
Proceeds from bank borrowings     1,426,080 203,927      
Dividend distribution to shareholders     (1,795,384) (256,736) (1,684,721)    
Proceeds from issuance of ordinary shares upon exercise of share options     623 89      
Net cash used in financing activities     (5,309,459) (759,242) (5,550,502)   (5,106,944)
Effect of exchange rate changes on cash and cash equivalents     54 7 (18)   (36)
Net increase (decrease) in cash, cash equivalents and restricted cash     1,675 239 (493)   (720)
Cash, cash equivalents and restricted cash at beginning of the year ¥ 2,086 $ 298 411 59 904   1,624
Cash, cash equivalents and restricted cash at end of the year     2,086 298 ¥ 411 59 904
Restriction on dividend distribution              
Amount of restricted capital and reserves not available for dividend distribution | ¥     ¥ 16,650,000        
Cash dividend declared and paid to the Company       $ 247,400   $ 233,300 ¥ 0
Parent company | Reportable legal entities | Subsequent event | O 2026 A Dividends              
Restriction on dividend distribution              
Dividends Payable, Date Declared Feb. 26, 2026 Feb. 26, 2026          
Dividends payable date to be paid year and month 2026-04 2026-04