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Employee Benefits (Details) - CNY (¥) ¥ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Employee Benefits
Contributions to medical and pension schemes	¥ 195,655	¥ 215,553	¥ 158,113
Other employee benefits	40,216	24,180	23,958
Total	¥ 235,871	¥ 239,733	¥ 182,071

X

- Definition

Contributions to government-mandated plans for other employee benefits.

+ References

No definition available.

+ Details

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X

- Definition

Contributions to government-mandated plans for medical and pension benefits.

+ References

No definition available.

+ Details

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Namespace Prefix:	bili_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
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X

- References

No definition available.

+ Details

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X

- Definition

Amount of cost for defined contribution plan.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 70
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=49170846&loc=d3e28014-114942

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