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Prepaid Expense and Other Assets - Summary of movements in impairment provision (Details) - CNY (¥) ¥ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Impairment Provision on Prepaid Expenses
Balance at beginning of the year	¥ (40,000)	¥ (39,372)
Additions	0	(1,000)	¥ (372)
Write-off		372
Balance at end of the year	¥ (40,000)	¥ (40,000)	¥ (39,372)

X

- Definition

Impairment provision on prepayment expenses and other current assets.

+ References

No definition available.

+ Details

Name:	wdh_ImpairmentProvisionOnPrepaymentExpensesAndOtherCurrentAssets
Namespace Prefix:	wdh_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Amount of additions of impairment provision on prepayment expenses and other current assets.

+ References

No definition available.

+ Details

Name:	wdh_ImpairmentProvisionOnPrepaymentExpensesAndOtherCurrentAssetsAdditions
Namespace Prefix:	wdh_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

+ References

No definition available.

+ Details

Name:	wdh_ImpairmentProvisionOnPrepaymentExpensesAndOtherCurrentAssetsRollForward
Namespace Prefix:	wdh_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Amount of write off of impairment provision on prepayment expenses and other current assets.

+ References

No definition available.

+ Details

Name:	wdh_ImpairmentProvisionOnPrepaymentExpensesAndOtherCurrentAssetsWriteOff
Namespace Prefix:	wdh_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration