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Earnings Per Share
 12 Months Ended
Dec. 31, 2017
Earnings Per Share [Abstract]  
Earnings Per Share
Earnings per share
Basic earnings per share is calculated by dividing net income attributable to the Company, adjusted for any change in noncontrolling interest redemption rights in excess of fair value, by the weighted average number of common shares and vested stock units outstanding, net of shares held in escrow that under certain circumstances may be returned to the Company.
Diluted earnings per share includes the dilutive effect of outstanding stock-settled stock appreciation rights (SSARs) and unvested stock units (under the treasury stock method) as well as shares held in escrow that the Company expects will remain outstanding.
The reconciliations of the numerators and denominators used to calculate basic and diluted net income per share are as follows:
 
Year ended December 31,
 
2017
 
2016
 
2015
 
(shares in thousands)
Numerators:
 
 
 
 
 

Net income from continuing operations attributable to DaVita Inc.
$
901,277

 
$
1,032,373

 
$
323,199

Net loss from discontinued operations attributable to DaVita Inc.
(237,659
)
 
(152,499
)
 
(53,467
)
Net income attributable to DaVita Inc. for basic earnings per share
calculation
$
663,618

 
$
879,874

 
$
269,732

Basic:
 
 
 
 
 
Weighted average shares outstanding during the period
190,820

 
203,835

 
214,062

Contingently returnable shares held in escrow for the DaVita
HealthCare Partners merger
(2,194
)
 
(2,194
)
 
(2,194
)
Weighted average shares for basic earnings per share calculation
188,626

 
201,641

 
211,868

Basic net income from continuing operations per share attributable to
DaVita Inc.
$
4.78

 
$
5.12

 
$
1.53

Basic net loss from discontinued operations per share attributable to
DaVita Inc.
(1.26
)
 
(0.76
)
 
(0.26
)
Basic net income per share attributable to DaVita Inc.
$
3.52

 
$
4.36

 
$
1.27

Diluted:
 
 
 
 
 

Weighted average shares outstanding during the period
190,820

 
203,835

 
214,062

Assumed incremental shares from stock plans
529

 
1,070

 
2,190

Weighted average shares for diluted earnings per share calculation
191,349

 
204,905

 
216,252

Diluted net income from continuing operations per share attributable to
DaVita Inc.
$
4.71

 
$
5.04

 
$
1.49

Diluted net loss from discontinued operations per share attributable to DaVita Inc.
(1.24
)
 
(0.75
)
 
(0.24
)
Diluted net income per share attributable to DaVita Inc.
$
3.47

 
$
4.29

 
$
1.25

Anti-dilutive stock-settled awards excluded from calculation(1)
4,350

 
2,523

 
1,365

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