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2474401 - Disclosure - Schedule II - Valuation and Qualifying Accounts - Disclosure Table (Detail)
(http://www.pentair.com/role/ScheduleIiValuationAndQualifyingAccountsDisclosureTableDetail)
TableValuation and Qualifying Accounts Disclosure [Table]
Slicers (applies to each fact value in each table cell)
Valuation and Qualifying Accounts Disclosure [Line Items]Period [Axis]
2013-01-01 - 2013-12-31
2012-01-01 - 2012-12-31
2011-01-01 - 2011-12-31
Movement in Valuation Allowances and Reserves [Roll Forward]
 
 
 
Beginning balance
14,000,000  
16,000,000  
17,100,000  
Additions charged to costs and expenses
51,800,000  
1,600,000  
4,400,000  
Deductions
2,400,000 1
4,000,000 1
4,700,000 1
Other changes
(2,600,000)2
400,000 2
(800,000)2
Ending balance
60,800,000  
 
14,000,000  
 
16,000,000  
 
1: Uncollectible accounts written off, net of recoveries
2: Result of foreign currency effects