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Schedule II - Valuation and Qualifying Accounts
 12 Months Ended
Dec. 31, 2016
Schedule II - Valuation and Qualifying Accounts
Schedule II — Valuation and Qualifying Accounts
Pentair plc and Subsidiaries
 
In millions
Beginning
balance
Additions charged (reductions credited) to costs and expenses
Deductions (1)
Other
changes (2)
Ending
balance
Allowances for doubtful accounts
Year ended December 31, 2017
$
16.4

$
0.8

$
4.5

$
1.1

$
13.8

Year ended December 31, 2016
$
19.0

$
1.2

$
4.1

$
0.3

$
16.4

Year ended December 31, 2015
$
12.1

$
10.1

$
2.4

$
(0.8
)
$
19.0

(1)
Uncollectible accounts written off, net of recoveries
(2)
Result of foreign currency effects