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Long-term Incentive Compensation and Shareholders’ Equity (Tables) | 12 Months Ended
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Dec. 31, 2018
Disclosure of Compensation Related Costs, Share-based Payments [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 (SSARs) and stock-settled stock unit awards is as follows:
| Year ended December 31, 2018
| Stock appreciation rights |  | Stock units
| Awards |  | Weighted average exercise price |  | Weighted average remaining contractual life |  | Awards |  | Weighted average remaining contractual life
Outstanding at beginning of year | 6,648,199 |  |  | $ | 67.92 |  |  |  |  | 1,075,572 |  |  |  |
Granted | 1,902,652 |  |  | $ | 66.54 |  |  |  |  | 1,101,388 |  |  |  |
Exercised | (2,059,872 | ) |  | $ | 60.34 |  |  |  |  | (165,543 | ) |  |  |
Canceled | (328,182 | ) |  | $ | 70.44 |  |  |  |  | (150,942 | ) |  |  |
Outstanding at end of period | 6,162,797 |  |  | $ | 69.90 |  |  | 2.9 |  | 1,860,475 |  |  | 2.2 |
Exercisable at end of period | 1,422,529 |  |  | $ | 73.39 |  |  | 0.9 |  | — |  |  | — |
Weighted-average fair value of grants |  |  |  |  |  |  |  |  |
2018 | $ | 16.24 |  |  |  |  |  |  |  | $ | 66.23 |  |  |  |
2017 | $ | 14.51 |  |  |  |  |  |  |  | $ | 65.73 |  |  |  |
2016 | $ | 13.74 |  |  |  |  |  |  |  | $ | 70.99 |  |  |  |
Summary of Range of Exercise Prices |
|  | Awards Outstanding |  | Weighted average exercise price |  | Awards exercisable |  | Weighted average exercise price
Range of SSARs base prices |
$50.01–$60.00 |  | 131,470 |  |  | $ | 57.90 |  |  | — |  |  | $ | — |
$60.01–$70.00 |  | 4,083,162 |  |  | $ | 66.66 |  |  | 757,237 |  |  | $ | 68.96 |
$70.01–$80.00 |  | 1,351,997 |  |  | $ | 74.78 |  |  | 346,316 |  |  | $ | 73.81 |
$80.01–$90.00 |  | 596,168 |  |  | $ | 83.60 |  |  | 318,976 |  |  | $ | 83.47 |
Total |  | 6,162,797 |  |  | $ | 69.90 |  |  | 1,422,529 |  |  | $ | 73.39 |
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,
| 2018 |  | 2017 |  | 2016
Expected term | 4.2 |  |  | 4.2 |  |  | 4.2 |
Expected volatility | 23.8 | % |  | 23.9 | % |  | 21.0 | %
Expected dividend yield | — | % |  | — | % |  | — | %
Risk-free interest rate | 2.9 | % |  | 1.7 | % |  | 1.0 | %
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 consolidated equity are as follows:
| Year ended December 31,
| 2018 |  | 2017 |  | 2016
Net income attributable to DaVita Inc. | $ | 159,394 |  |  | $ | 663,618 |  |  | $ | 879,874 |
Changes in paid-in-capital for: |  |  |  |  |
Sales of noncontrolling interest | 79 |  |  | (114 | ) |  | — |
Purchase of noncontrolling interests | (17,897 | ) |  | (2,752 | ) |  | (13,105 | )
Net transfer in noncontrolling interests | (17,818 | ) |  | (2,866 | ) |  | (13,105 | )
Net income attributable to DaVita Inc. net of transfers in noncontrolling interests | $ | 141,576 |  |  | $ | 660,752 |  |  | $ | 866,769 |

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- Definition Tabular disclosure for share-based compensation plans. Includes, but is not limited to, outstanding awards at beginning and end of year, grants, exercises, forfeitures, and weighted-average grant date fair value. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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