XML 87 R74.htm IDEA: XBRL DOCUMENT
v3.22.0.1

Income Taxes - Summary Of Valuation Allowance (Detail) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Beginning Balance | $ 60,101 | $ 51,221 | $ 53,893
Charged to Provision for Income Taxes | 2,919 | 1,137 | (1,242)
Other | (4,186) | 7,743 | (1,430)
Ending Balance | $ 58,834 | $ 60,101 | $ 51,221

X
- Definition Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=121826272&loc=d3e32537-109319 + Details
Name: | us-gaap_DeferredTaxAssetsValuationAllowance
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Valuation Allowance Deferred Tax Asset Change Others. + References No definition available. + Details
Name: | wat_ValuationAllowanceDeferredTaxAssetChangeOthers
Namespace Prefix: | wat_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Valuation allowance deferred yax asset charged to income tax provision. + References No definition available. + Details
Name: | wat_ValuationAllowanceDeferredTaxAssetChargedToIncomeTaxProvision
Namespace Prefix: | wat_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration