Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901

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Share-based compensation (Huya's share-based awards - Narrative) (Details)	12 Months Ended
	Dec. 31, 2019 installment shares	Dec. 31, 2018 shares	Dec. 31, 2017 shares
Huya 2017 Share Incentive Plan [Member]
Share-based compensation [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross \| shares	0	6,138,353
Vested in four equal installments over the following 48 months \| Employees [Member]
Share-based compensation [Line Items]
Number of vesting installments	2
Share options [Member] \| Huya 2017 Share Incentive Plan [Member] \| Employees [Member]
Share-based compensation [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross \| shares	0	5,918,353	11,737,705
Share options [Member] \| Huya 2017 Share Incentive Plan [Member] \| Non-employee [Member]
Share-based compensation [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross \| shares	0	220,000
Share options [Member] \| Vested after 24 months of the grant date and two equal installments over the following 24 months \| Huya 2017 Share Incentive Plan [Member]
Share-based compensation [Line Items]
Number of vesting installments	2
Vesting percentage	50.00%
Vesting percentage remaining	50.00%
Vesting period	24 months
Secondary vesting period	24 months
Share options [Member] \| Vested in four equal installments over the following 48 months \| Huya 2017 Share Incentive Plan [Member]
Share-based compensation [Line Items]
Number of vesting installments	4
Vesting period	48 months
Restricted shares \| Vested after 24 months of the grant date and two equal installments over the following 24 months \| Huya 2017 Share Incentive Plan [Member]
Share-based compensation [Line Items]
Number of vesting installments	2
Vesting percentage	50.00%
Vesting percentage remaining	50.00%
Vesting period	24 months
Secondary vesting period	24 months
Restricted shares \| Vested in four equal installments over the following 48 months \| Huya 2017 Share Incentive Plan [Member]
Share-based compensation [Line Items]
Number of vesting installments	4
Vesting period	48 months