XML 22 R29.htm IDEA: XBRL DOCUMENT
v2.4.0.8

Accounting Policies (Details) (USD $) In Millions, unless otherwise specified | 3 Months Ended |  | 3 Months Ended |  |
--- | --- | --- | --- | --- | ---
Mar. 30, 2014 | Mar. 31, 2013 | Dec. 31, 2013 | Mar. 30, 2014 Americas | Mar. 31, 2013 Americas | Mar. 30, 2014 Europe, Middle East and Africa (EMEA) | Mar. 31, 2013 Europe, Middle East and Africa (EMEA) | Mar. 30, 2014 Asia-Pacific | Mar. 31, 2013 Asia-Pacific | Dec. 31, 2012 Asia-Pacific
Gross Balance |  |  |  |  |  |  |  |  |  |
Balance at the beginning of the period | $ 539.3 | $ 528.2 |  | $ 224.7 | $ 225.6 | $ 301.3 | $ 289.7 | $ 13.3 | $ 12.9 | $ 12.9
Foreign Currency Translation and Other | (0.9) | (8.6) |  | (0.4) | (0.3) | (0.1) | (8.3) | (0.4) |  |
Balance at the end of the period | 538.4 | 519.6 |  | 224.3 | 225.3 | 301.2 | 281.4 | 12.9 | 12.9 | 12.9
Accumulated Impairment Losses |  |  |  |  |  |  |  |  |  |
Balance at the beginning of the period | (24.5) | (24.2) |  | (24.5) | (24.2) |  |  |  |  |
Balance at the end of the period | (24.5) | (24.2) |  | (24.5) | (24.2) |  |  |  |  |
Net Goodwill | $ 513.9 | $ 495.4 | $ 514.8 | $ 199.8 | $ 201.1 | $ 301.2 | $ 281.4 | $ 12.9 | $ 12.9 |

X
- Definition Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=14024403&loc=d3e13816-109267 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13770-109266 + Details
Name: | us-gaap_Goodwill
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount before accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (a,h) -URI http://asc.fasb.org/extlink&oid=14024403&loc=d3e13816-109267 + Details
Name: | us-gaap_GoodwillGross
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of accumulated impairment loss for an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (a,h) -URI http://asc.fasb.org/extlink&oid=14024403&loc=d3e13816-109267 + Details
Name: | us-gaap_GoodwillImpairedAccumulatedImpairmentLoss
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Details
Name: | us-gaap_GoodwillImpairedAccumulatedImpairmentLossAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | wts_GoodwillGrossAbstract
Namespace Prefix: | wts_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The increase (decrease) to the recorded value of goodwill for foreign currency translation adjustments and other increases or decreases during the reporting period in the carrying value of goodwill that are not separately disclosed. + References No definition available. + Details
Name: | wts_GoodwillTranslationAdjustmentsAndOtherChanges
Namespace Prefix: | wts_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration