Net Loss per Share (Details) ¥ / shares in Units, $ / shares in Units, ¥ in Thousands, $ in Thousands	12 Months Ended
Dec. 31, 2024 CNY (¥) ¥ / shares shares	Dec. 31, 2024 USD ($) $ / shares shares	Dec. 31, 2023 CNY (¥) ¥ / shares shares	Dec. 31, 2022 CNY (¥) ¥ / shares shares
Numerator:
Net loss	¥ (1,363,651)	$ (186,818)	¥ (4,811,713)	¥ (7,507,653)
Net loss/(income) attributable to noncontrolling interests	16,851	2,309	(10,608)	10,640
Net loss attributable to the Bilibili Inc.'s shareholders	¥ (1,346,800)	$ (184,509)	¥ (4,822,321)	¥ (7,497,013)
Denominator:
Net loss per share, basic \| (per share)	¥ (3.23)	$ (0.44)	¥ (11.67)	¥ (18.99)
Net loss per share, diluted \| (per share)	¥ (3.23)	$ (0.44)	¥ (11.67)	¥ (18.99)
Employee Stock Option
Net Loss Per Share
Anti-dilutive securities excluded from the calculation of diluted net loss per share	828,336	828,336	1,271,196	2,069,570
Ordinary Shares
Denominator:
Weighted average number of ordinary shares outstanding, basic	416,470,256	416,470,256	413,210,271	394,863,584
Weighted average number of ordinary shares outstanding, diluted	416,470,256	416,470,256	413,210,271	394,863,584
Ordinary Shares \| Convertible senior notes (the "April 2026 Notes") due April 2026 [Member]
Net Loss Per Share
Anti-dilutive securities excluded from the calculation of diluted net loss per share	4,218,676	4,218,676	17,347,182	17,347,721
Ordinary Shares \| Convertible senior notes (the "2027 Notes") due 2027 [Member]
Net Loss Per Share
Anti-dilutive securities excluded from the calculation of diluted net loss per share	2,259	2,259	8,280,834	19,382,489
Ordinary Shares \| Convertible senior notes (the "December 2026 Notes") due December 2026 [Member]
Net Loss Per Share
Anti-dilutive securities excluded from the calculation of diluted net loss per share	4,211,678	4,211,678	4,839,195	14,466,365
Restricted Stock Units (RSUs) [Member]
Net Loss Per Share
Anti-dilutive securities excluded from the calculation of diluted net loss per share	2,096,485	2,096,485	56,329	0

Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

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