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Earnings Per Share
 12 Months Ended
Dec. 31, 2018
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, net of the weighted average shares held in escrow that under certain circumstances may have been returned to the Company.
Diluted earnings per share includes the dilutive effect of outstanding stock-settled stock appreciation rights and unvested stock units (under the treasury stock method) as well as the weighted average shares held in escrow that were outstanding during the period.
The reconciliations of the numerators and denominators used to calculate basic and diluted earnings per share were as follows:
 
Year ended December 31,
 
2018
 
2017
 
2016
 
(shares in thousands)
Numerators:
 
 
 
 
 

Net income from continuing operations attributable to DaVita Inc.
$
624,321

 
$
901,277

 
$
1,032,373

Net loss from discontinued operations attributable to DaVita Inc.
(464,927
)
 
(237,659
)
 
(152,499
)
Net income attributable to DaVita Inc. for earnings per share calculation
$
159,394

 
$
663,618

 
$
879,874

Basic:
 
 
 
 
 
Weighted average shares outstanding during the period
171,886

 
190,820

 
203,835

Weighted average contingently returnable shares previously held in escrow for
the DaVita HealthCare Partners merger
(1,100
)
 
(2,194
)
 
(2,194
)
Weighted average shares for basic earnings per share calculation
170,786

 
188,626

 
201,641

Basic net income from continuing operations per share attributable to DaVita Inc.
$
3.66

 
$
4.78

 
$
5.12

Basic net loss from discontinued operations per share attributable to DaVita Inc.
(2.73
)
 
(1.26
)
 
(0.76
)
Basic net income per share attributable to DaVita Inc.
$
0.93

 
$
3.52

 
$
4.36

Diluted:
 
 
 
 
 

Weighted average shares outstanding during the period
171,886

 
190,820

 
203,835

Assumed incremental shares from stock plans
479

 
529

 
1,070

Weighted average shares for diluted earnings per share calculation
172,365

 
191,349

 
$
204,905

Diluted net income from continuing operations per share attributable to DaVita Inc.
$
3.62

 
$
4.71

 
$
5.04

Diluted net loss from discontinued operations per share attributable to DaVita Inc.
(2.70
)
 
(1.24
)
 
(0.75
)
Diluted net income per share attributable to DaVita Inc.
$
0.92

 
$
3.47

 
$
4.29

Anti-dilutive stock-settled awards excluded from calculation(1)
5,295

 
4,350

 
2,523

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