Business Combination - Summary of Pro forma financial information (Detail) - CNY (¥) ¥ in Thousands	12 Months Ended
Dec. 31, 2023	Dec. 31, 2022
Business Combinations [Abstract]
Pro forma net revenues	¥ 30,856,674	¥ 26,855,119
Pro forma net loss	¥ (14,066,681)	¥ (12,035,550)

Amount, after tax, of pro forma income (loss) of combined entity as if acquisition date of business combination occurred as of beginning of period.

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