2.2.0.7 false Income Taxes (Tables) 30600 - Disclosure - Income Taxes (Tables) true false false false 1 USD false false USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 Pure Standard http://www.xbrl.org/2003/instance pure xbrli 0 EPS Divide http://www.xbrl.org/2003/iso4217 USD iso4217 http://www.xbrl.org/2003/instance shares xbrli 0 Shares Standard http://www.xbrl.org/2003/instance shares xbrli 0 $ 2 Unrecognized Tax Benefits Roll Forward [Abstract] 0 us-gaap_ReconciliationOfUnrecognizedTaxBenefitsExcludingAmountsPertainingToExaminedTaxReturnsRollForward us-gaap true na duration No definition available. false false false false false true false false false false false false 1 false false false false 0 0 false false false xbrli:stringItemType string A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. false 3 Unrecognized Tax Benefits Roll Forward 1 wat_UnrecognizedTaxBenefitsRollForward wat false na duration isclosure of the reconciliation of the uncertain tax benefits balance from the beginning of a period to the end of a period. false false false false false false false false false false false false 1 false false false false 0 0 The following is a summary of the activity in the Company's unrecognized tax benefits for the nine months ended October 2, 2010 and October 3, 2009 (in thousands):<div><table style="border-collapse:collapse;margin-top:20px;"><tr style="height: 17px"><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 353px; text-align:left;border-color:#000000;min-width:353px;"> </td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td colspan="2" style="width: 117px; border-bottom-style:solid;border-bottom-width:1px;text-align:center;border-color:#000000;min-width:117px;">October 2, 2010</td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td colspan="2" style="width: 117px; border-bottom-style:solid;border-bottom-width:1px;text-align:center;border-color:#000000;min-width:117px;">October 3, 2009</td></tr><tr style="height: 17px"><td colspan="2" style="width: 365px; text-align:left;border-color:#000000;min-width:365px;">Balance at the beginning of the period</td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 12px; border-top-style:solid;border-top-width:1px;text-align:center;border-color:#000000;min-width:12px;">$</td><td style="width: 105px; border-top-style:solid;border-top-width:1px;text-align:right;border-color:#000000;min-width:105px;"> 77,924</td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 12px; border-top-style:solid;border-top-width:1px;text-align:center;border-color:#000000;min-width:12px;">$</td><td style="width: 105px; border-top-style:solid;border-top-width:1px;text-align:right;border-color:#000000;min-width:105px;"> 77,295</td></tr><tr style="height: 17px"><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 353px; text-align:left;border-color:#000000;min-width:353px;">Realization of uncertain U.K. tax benefits</td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 12px; text-align:center;border-color:#000000;min-width:12px;"> </td><td style="width: 105px; text-align:right;border-color:#000000;min-width:105px;"> (9,996)</td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 12px; text-align:center;border-color:#000000;min-width:12px;"> </td><td style="width: 105px; text-align:right;border-color:#000000;min-width:105px;"> -</td></tr><tr style="height: 17px"><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 353px; text-align:left;border-color:#000000;min-width:353px;">Realization of uncertain pre-acquisition tax benefits</td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 12px; text-align:center;border-color:#000000;min-width:12px;"> </td><td style="width: 105px; text-align:right;border-color:#000000;min-width:105px;"> (1,500)</td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 12px; text-align:center;border-color:#000000;min-width:12px;"> </td><td style="width: 105px; text-align:right;border-color:#000000;min-width:105px;"> -</td></tr><tr style="height: 17px"><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 353px; text-align:left;border-color:#000000;min-width:353px;">Realization of uncertain legal entity reorganization tax benefits</td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 12px; text-align:center;border-color:#000000;min-width:12px;"> </td><td style="width: 105px; text-align:right;border-color:#000000;min-width:105px;"> -</td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 12px; text-align:center;border-color:#000000;min-width:12px;"> </td><td style="width: 105px; text-align:right;border-color:#000000;min-width:105px;"> (4,555)</td></tr><tr style="height: 17px"><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 353px; text-align:left;border-color:#000000;min-width:353px;">Increase in other uncertain tax benefits</td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 12px; border-bottom-style:solid;border-bottom-width:1px;text-align:center;border-color:#000000;min-width:12px;"> </td><td style="width: 105px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:105px;"> 3,469</td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 12px; border-bottom-style:solid;border-bottom-width:1px;text-align:center;border-color:#000000;min-width:12px;"> </td><td style="width: 105px; border-bottom-style:solid;border-bottom-width:1px;text-align:right;border-color:#000000;min-width:105px;"> 3,395</td></tr><tr style="height: 18px"><td colspan="2" style="width: 365px; text-align:left;border-color:#000000;min-width:365px;">Balance at the end of the period</td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 12px; border-top-style:solid;border-top-width:1px;border-bottom-style:double;border-bottom-width:3px;text-align:center;border-color:#000000;min-width:12px;">$</td><td style="width: 105px; border-top-style:solid;border-top-width:1px;border-bottom-style:double;border-bottom-width:3px;text-align:right;border-color:#000000;min-width:105px;"> 69,897</td><td style="width: 12px; text-align:left;border-color:#000000;min-width:12px;"> </td><td style="width: 12px; border-top-style:solid;border-top-width:1px;border-bottom-style:double;border-bottom-width:3px;text-align:center;border-color:#000000;min-width:12px;">$</td><td style="width: 105px; border-top-style:solid;border-top-width:1px;border-bottom-style:double;border-bottom-width:3px;text-align:right;border-color:#000000;min-width:105px;"> 76,135</td></tr></table></div> The following is a summary of the activity in the Company's unrecognized tax benefits for the nine months ended October 2, 2010 and October 3, 2009 (in false false false us-types:textBlockItemType textblock isclosure of the reconciliation of the uncertain tax benefits balance from the beginning of a period to the end of a period. No authoritative reference available. false 1 2 false UnKnown UnKnown UnKnown false true