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Schedule II - Valuation and Qualifying Accounts | 12 Months Ended
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Dec. 31, 2012
Schedule II - Valuation and Qualifying Accounts | Schedule II — Valuation and Qualifying Accounts Pentair Ltd. and Subsidiaries
In thousands |  | Beginning balance |  |  | Additions charged to costs and expenses |  |  | Deductions (1) |  |  | Other changes (2) |  |  | Ending balance |
Allowances for doubtful accounts |
Year ended December 31, 2012 |  |  | $ 16,000 |  |  |  | $ 1,615 |  |  |  | $ 4,040 |  |  |  | $ 420 |  |  |  | $ 13,995 |
Year ended December 31, 2011 |  |  | $ 17,119 |  |  |  | $ 4,447 |  |  |  | $ 4,724 |  |  |  | $ (842) |  |  |  | $ 16,000 |
Year ended December 31, 2010 |  |  | $ 14,154 |  |  |  | $ 4,300 |  |  |  | $ 1,152 |  |  |  | $ (183) |  |  |  | $ 17,119 |
| (1) | Uncollectible accounts written off, net of recoveries
| (2) | Result of foreign currency effects

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- Definition The entire disclosure for any allowance and reserve accounts (their beginning and ending balances, as well as a reconciliation by type of activity during the period). Alternatively, disclosure of the required information may be within the footnotes to the financial statements or a supplemental schedule to the financial statements. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 09 -Article 12 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6881521&loc=d3e24092-122690 + Details
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