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Long-term incentive compensation and shareholders' equity (Tables) | 12 Months Ended
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Dec. 31, 2015
Share Based Compensation [Abstract] |
Summary of Status of Awards Under Stock-Based Compensation Plans and Agreements | A combined summary of the status of the Company’s stock-settled awards under the 2011 Plan, including base shares for stock-settled stock appreciation rights and stock-settled stock unit awards is as follows:
|  | Year ended December 31, 2015 |
|  | Stock appreciation rights |  |  | Stock units |
|  |  |  |  |  | Weighted |  |  | Weighted |  |  |  |  |  |  | Weighted |
|  |  |  |  |  | average |  |  | average |  |  |  |  |  |  | average |
|  |  |  |  |  | exercise |  |  | remaining |  |  |  |  |  |  | remaining |
|  | Awards |  |  | price |  |  | contractual life |  |  | Awards |  |  | contractual life |
Outstanding at beginning of year |  |  | 10,585,172 |  |  | $ | 53.21 |  |  |  |  |  |  |  | 921,898 |  |  |  |  |
Granted |  |  | 993,953 |  |  |  | 81.22 |  |  |  |  |  |  |  | 279,485 |  |  |  |  |
Exercised |  |  | (2,409,579 | ) |  |  | 41.62 |  |  |  |  |  |  |  | (348,127 | ) |  |  |  |
Cancelled |  |  | (635,985 | ) |  |  | 62.42 |  |  |  |  |  |  |  | (88,196 | ) |  |  |  |
Outstanding at end of period |  |  | 8,533,561 |  |  | $ | 59.05 |  |  |  | 2.3 |  |  |  | 765,060 |  |  |  | 0.4 |
Exercisable at end of period |  |  | 2,856,959 |  |  | $ | 47.88 |  |  |  | 1.2 |  |  |  | — |  |  |  | — |
Weighted-average fair value of grants in 2015 |  | $ | 17.97 |  |  |  |  |  |  |  |  |  |  | $ | 80.25 |  |  |  |  |
Weighted-average fair value of grants in 2014 |  | $ | 16.41 |  |  |  |  |  |  |  |  |  |  | $ | 72.24 |  |  |  |  |
Weighted-average fair value of grants in 2013 |  | $ | 13.47 |  |  |  |  |  |  |  |  |  |  | $ | 58.90 |  |  |  |  |
Summary of Range of Exercise Prices |
|  | Awards |  |  | Weighted average |  |  | Awards |  |  | Weighted average |
Range of SSAR base prices |  | outstanding |  |  | exercise price |  |  | exercisable |  |  | exercise price |
$30.01–$40.00 |  |  | 369,301 |  |  |  | 36.56 |  |  |  | 358,969 |  |  |  | 36.54 |
$40.01–$50.00 |  |  | 1,437,708 |  |  |  | 43.02 |  |  |  | 1,390,300 |  |  |  | 42.86 |
$50.01–$60.00 |  |  | 4,143,205 |  |  |  | 57.54 |  |  |  | 843,384 |  |  |  | 55.30 |
$60.01–$70.00 |  |  | 1,293,564 |  |  |  | 68.12 |  |  |  | 216,000 |  |  |  | 65.08 |
$70.01–$80.00 |  |  | 588,733 |  |  |  | 73.80 |  |  |  | 48,306 |  |  |  | 70.31 |
$80.01–$90.00 |  |  | 701,050 |  |  |  | 83.60 |  |  |  | — |  |  |  | — |
Total |  |  | 8,533,561 |  |  | $ | 59.05 |  |  |  | 2,856,959 |  |  | $ | 47.88 |
Summary of Weighted Average Valuation Inputs | A summary of the weighted average valuation inputs described above used for estimating the grant-date fair value of stock-settled stock appreciation rights awards granted in the periods indicated is as follows:
|  | Year ended December 31, |
|  | 2015 |  |  | 2014 |  |  | 2013 |
Expected term |  | 4.1 years |  |  | 4.2 years |  |  | 4.1 years |
Expected volatility |  |  | 24.6 | % |  |  | 25.8 | % |  |  | 27.2 | %
Expected dividend yield |  |  | 0.0 | % |  |  | 0.0 | % |  |  | 0.0 | %
Risk-free interest rate |  |  | 1.5 | % |  |  | 1.5 | % |  |  | 0.7 | %
Effects of Changes in DaVita Inc's Ownership Interest on Company's Equity | The effects of changes in DaVita HealthCare Partners Inc.’s ownership interest on the Company’s equity are as follows:
|  | Year ended December 31, |
|  | 2015 |  |  | 2014 |  |  | 2013 |
Net income attributable to DaVita HealthCare Partners Inc. |  | $ | 269,732 |  |  | $ | 723,114 |  |  | $ | 633,446 |
Increase (decrease) in paid-in capital for sales of noncontrolling interest |  |  | — |  |  |  | 355 |  |  |  | (1,442 | )
Decrease in paid-in capital for the purchase of noncontrolling interests |  |  | (55,826 | ) |  |  | (5,357 | ) |  |  | (3,119 | )
Net transfer to noncontrolling interests |  |  | (55,826 | ) |  |  | (5,002 | ) |  |  | (4,561 | )
Change from net income attributable to DaVita HealthCare Partners Inc. and transfers to noncontrolling interests |  | $ | 213,906 |  |  | $ | 718,112 |  |  | $ | 628,885 |

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