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Earnings Per Share (Tables)
 6 Months Ended
Jun. 28, 2014
Basic and Diluted Earnings Per Share
Basic and diluted earnings per share were calculated as follows:
 
Three months ended    
 
Six months ended
In millions, except per-share data
June 28,
2014
June 29,
2013
 
June 28,
2014
June 29,
2013
Net income attributable to Pentair plc
$
161.5

$
154.1

 
$
280.1

$
205.8

Weighted average ordinary shares outstanding
 
 
 
 
 
Basic
193.1

202.1

 
194.7

203.5

Dilutive impact of stock options and restricted stock units
3.3

3.4

 
3.3

3.4

Diluted
196.4

205.5

 
198.0

206.9

Earnings per ordinary share attributable to Pentair plc
 
 
 
 
 
Basic earnings per ordinary share
$
0.84

$
0.76

 
$
1.44

$
1.01

Diluted earnings per ordinary share
$
0.82

$
0.75

 
$
1.41

$
0.99

Anti-dilutive stock options excluded from the calculation of diluted earnings per share
0.5

0.9

 
0.5

1.0