Principal activities and reorganization - Summary of Subsidiary of Limited Liability Company or Limited Partnership (Details)	12 Months Ended
Dec. 31, 2024
Waterdrop Group HK Limited \| Subsidiaries
Subsidiary or Equity Method Investee [Line Items]
Date of Incorporation/ Establishment	May 31, 2018
Place of Incorporation/ Establishment	Hong Kong
Principal Subsidiaries, Percentage of Direct or Indirect Economic Interest	100.00%
Principal Activities	Investment holding
Waterdrop Technology \| Subsidiaries
Subsidiary or Equity Method Investee [Line Items]
Date of Incorporation/ Establishment	Oct. 17, 2018
Place of Incorporation/ Establishment	Chinese mainland
Principal Subsidiaries, Percentage of Direct or Indirect Economic Interest	100.00%
Principal Activities	Research and development service for the Group
Zongqing Xiangqian \| VIE
Subsidiary or Equity Method Investee [Line Items]
Date of Incorporation/ Establishment	Aug. 02, 2013
Place of Incorporation/ Establishment	Chinese mainland
VIEs and its principal subsidiaries, Percentage of Direct or Indirect Economic Interest	100.00%
Principal Activities	Operating management service for the Group
Shuidi Hubao \| VIE
Subsidiary or Equity Method Investee [Line Items]
Date of Incorporation/ Establishment	Dec. 12, 2016
Place of Incorporation/ Establishment	Chinese mainland
VIEs and its principal subsidiaries, Percentage of Direct or Indirect Economic Interest	100.00%
Principal Activities	Medical crowdfunding platform services
Shuidi Hulian \| VIE
Subsidiary or Equity Method Investee [Line Items]
Date of Incorporation/ Establishment	Dec. 12, 2016
Place of Incorporation/ Establishment	Chinese mainland
VIEs and its principal subsidiaries, Percentage of Direct or Indirect Economic Interest	100.00%
Principal Activities	Technical service
Shuidi Insurance Brokerage Co., Ltd \| VIE
Subsidiary or Equity Method Investee [Line Items]
Date of Incorporation/ Establishment	Oct. 19, 2012
Place of Incorporation/ Establishment	Chinese mainland
VIEs and its principal subsidiaries, Percentage of Direct or Indirect Economic Interest	100.00%
Principal Activities	Insurance brokerage services
Beijing Yifan Fengshun Medical Technology \| VIE
Subsidiary or Equity Method Investee [Line Items]
Date of Incorporation/ Establishment	Dec. 18, 2020
Place of Incorporation/ Establishment	Chinese mainland
VIEs and its principal subsidiaries, Percentage of Direct or Indirect Economic Interest	100.00%
Principal Activities	Digital clinical trial solution

The parent entity's interest in net assets of the subsidiary, expressed as a percentage.

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Description of the major products or services that a subsidiary or equity investee sells or provides and its principal markets, including locations of those markets.

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Percentage of the Variable Interest Entity's (VIE) voting interest owned by (or beneficial interest in) the reporting entity (directly or indirectly).

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 810
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-Section 50
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