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Convertible Redeemable Preferred Shares - Summary of Changes in the Carrying Amount of Convertible Redeemable Preferred Shares (Details) - CNY (¥) ¥ in Thousands | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Temporary Equity [Line Items] |  |  |
Balance |  |  | ¥ 8,879,894
Balance, Shares |  |  | 94,697,306
Issuance |  |  | ¥ 1,420,667
Issuance, Shares |  |  | 11,731,035
Issuance upon conversion of convertible bonds |  |  | ¥ 192,122
Issuance upon conversion of convertible bonds, Shares |  |  | 10,906,031
Accretion | ¥ 0 | ¥ 0 | ¥ 508,627
Convert to Class A Ordinary shares |  |  | ¥ (5,263,152)
Convert to Class A Ordinary shares, Shares |  |  | (70,254,680)
Convert to Class B Ordinary shares |  |  | ¥ (5,738,158)
Convert to Class B Ordinary shares, Shares |  |  | (47,079,692)
Series A Convertible Redeemable Preferred Shares |  |  |
Temporary Equity [Line Items] |  |  |
Balance |  |  | ¥ 445,275
Balance, Shares |  |  | 9,497,040
Accretion |  |  | ¥ 21,898
Convert to Class A Ordinary shares |  |  | ¥ (467,173)
Convert to Class A Ordinary shares, Shares |  |  | (9,497,040)
Series B Convertible Redeemable Preferred Shares |  |  |
Temporary Equity [Line Items] |  |  |
Balance |  |  | ¥ 361,633
Balance, Shares |  |  | 7,586,836
Accretion |  |  | ¥ 17,207
Convert to Class A Ordinary shares |  |  | ¥ (378,840)
Convert to Class A Ordinary shares, Shares |  |  | (7,586,836)
Series C Convertible Redeemable Preferred Shares |  |  |
Temporary Equity [Line Items] |  |  |
Balance |  |  | ¥ 1,705,435
Balance, Shares |  |  | 33,320,256
Issuance upon conversion of convertible bonds |  |  | ¥ 192,122
Issuance upon conversion of convertible bonds, Shares |  |  | 10,906,031
Accretion |  |  | ¥ 246,015
Convert to Class A Ordinary shares |  |  | ¥ (1,467,859)
Convert to Class A Ordinary shares, Shares |  |  | (30,284,935)
Convert to Class B Ordinary shares |  |  | ¥ (675,713)
Convert to Class B Ordinary shares, Shares |  |  | (13,941,352)
Series D Convertible Redeemable Preferred Shares |  |  |
Temporary Equity [Line Items] |  |  |
Balance |  |  | ¥ 1,153,593
Balance, Shares |  |  | 10,068,160
Accretion |  |  | ¥ 37,083
Convert to Class A Ordinary shares |  |  | ¥ (940,464)
Convert to Class A Ordinary shares, Shares |  |  | (7,952,405)
Convert to Class B Ordinary shares |  |  | ¥ (250,212)
Convert to Class B Ordinary shares, Shares |  |  | (2,115,755)
Series E Convertible Redeemable Preferred Shares |  |  |
Temporary Equity [Line Items] |  |  |
Balance |  |  | ¥ 5,213,958
Balance, Shares |  |  | 34,225,014
Issuance |  |  | ¥ 241,341
Issuance, Shares |  |  | 1,953,652
Accretion |  |  | ¥ 186,424
Convert to Class A Ordinary shares |  |  | ¥ (916,388)
Convert to Class A Ordinary shares, Shares |  |  | (5,876,520)
Convert to Class B Ordinary shares |  |  | ¥ (4,725,335)
Convert to Class B Ordinary shares, Shares |  |  | (30,302,146)
Series F Convertible Redeemable Preferred Shares |  |  |
Temporary Equity [Line Items] |  |  |
Issuance |  |  | ¥ 1,179,326
Issuance, Shares |  |  | 9,777,383
Convert to Class A Ordinary shares |  |  | ¥ (1,092,428)
Convert to Class A Ordinary shares, Shares |  |  | (9,056,944)
Convert to Class B Ordinary shares |  |  | ¥ (86,898)
Convert to Class B Ordinary shares, Shares |  |  | (720,439)

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