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Changes in DaVita Inc.'s ownership interest in consolidated subsidiaries (Tables)
 3 Months Ended
Mar. 31, 2018
Noncontrolling Interest [Abstract]  
Effects of Changes in DaVita Inc's Ownership Interest on Company's Equity
The effects of changes in DaVita Inc.’s ownership interest in consolidated subsidiaries on the Company’s equity were as follows: 
 
Three months ended
March 31,
 
2018
 
2017
Net income attributable to DaVita Inc.
$
178,686

 
$
447,697

Changes in paid-in capital for:
 
 
 
Sales of noncontrolling interests
76

 
—

Purchases of noncontrolling interests
(1,994
)
 
(423
)
Net transfers to noncontrolling interests
(1,918
)
 
(423
)
Net income attributable to DaVita Inc., net of transfers to noncontrolling interests
$
176,768

 
$
447,274