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Earnings per share (Tables)
 3 Months Ended
Mar. 31, 2017
Earnings Per Share [Abstract]  
Reconciliations of Numerators and Denominators Used to Calculate Basic and Diluted Earnings Per Share
The reconciliations of the numerators and denominators used to calculate basic and diluted earnings per share are as follows:
 
 
Three months ended
March 31,
 
2017
 
2016
Basic:
 

 
 

Net income attributable to DaVita Inc.
$
447,697

 
$
97,434

Weighted average shares outstanding during the period
194,571

 
206,561

Contingently returnable shares held in escrow from the DaVita HealthCare Partners merger
(2,194
)
 
(2,194
)
Weighted average shares for basic earnings per share calculation
192,377

 
204,367

Basic net income per share attributable to DaVita Inc.
$
2.33

 
$
0.48

Diluted:
 

 
 

Net income attributable to DaVita Inc.
$
447,697

 
$
97,434

Weighted average shares outstanding during the period
194,571

 
206,561

Assumed incremental shares from stock plans
710

 
1,367

Weighted average shares for diluted earnings per share calculation
195,281

 
207,928

Diluted net income per share attributable to DaVita Inc.
$
2.29

 
$
0.47

Anti-dilutive potential common shares excluded from calculation(1)
3,427

 
2,273

 
(1)
Shares associated with stock-settled stock appreciation rights that are excluded from the diluted denominator calculation because they are anti-dilutive under the treasury stock method.