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Goodwill - Additional Information (Detail) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended | 12 Months Ended |
--- | --- | --- | --- | ---
Jun. 30, 2016 | Mar. 31, 2016 | Dec. 31, 2015 | Sep. 30, 2016 | Sep. 30, 2015 | Dec. 31, 2015 | Dec. 31, 2014
Goodwill [Line Items] |  |  |  |  |  |  |
Goodwill and other intangible asset impairment charges |  |  | $ 206,169 |  |  |  |
Goodwill impaired facts and circumstances leading to impairment description |  |  |  | Based on continuing developments at the Company’s DMG reporting units during 2016, including the Medicare Advantage final benchmark rates for 2017 announced on April 4, 2016, further changes in expectations concerning future government reimbursement rates and the Company’s expected ability to mitigate them, as well as medical cost and utilization trends, underperformance of certain at-risk units in recent quarters and other market conditions, the Company performed additional impairment assessments for certain at-risk DMG reporting units during each of the first three quarters of 2016. |  |  |
Goodwill impairment charges |  |  |  | $ 253,000 | $ 4,065 | $ 192,834 |
Goodwill |  |  | 9,294,479 | $ 9,382,996 |  | 9,294,479 | $ 9,415,295
Goodwill impairment charge description |  |  |  | For example, a sustained, long-term reduction of 3% in operating income for DMG Nevada or DMG Florida could reduce their estimated fair values by up to 2.5% and 1.9%, respectively. Separately, an increase in their respective discount rates of 100 basis points could reduce the estimated fair values of DMG Nevada and DMG Florida by up to 5.5% and 4.9%, respectively. Similarly, a long-term reduction of 3% in operating income or, separately, an increase in the discount rate of 100 basis points could reduce the estimated fair value of Lifeline vascular access by up to 2.6% and 5.0%. |  |  |
DaVita Medical Group (DMG) |  |  |  |  |  |  |
Goodwill [Line Items] |  |  |  |  |  |  |
Goodwill impairment charges |  |  |  | $ 253,000 |  | 188,769 |
Goodwill |  |  | $ 3,398,264 | $ 3,391,942 |  | $ 3,398,264 | $ 3,562,534
DaVita Medical Group (DMG) | Long-term Reduction of 3% Percent Operating Income |  |  |  |  |  |  |
Goodwill [Line Items] |  |  |  |  |  |  |
Decrease in operating income percentage used for assessment of fair values |  |  |  | 3.00% |  |  |
DaVita Medical Group (DMG) | Increase In Discount Rates By 100 Basis Points |  |  |  |  |  |  |
Goodwill [Line Items] |  |  |  |  |  |  |
Increase in discount rates used for assessment of fair values |  |  |  | 1.00% |  |  |
DaVita Medical Group (DMG) | Nevada |  |  |  |  |  |  |
Goodwill [Line Items] |  |  |  |  |  |  |
Goodwill impairment charges | $ 79,000 | $ 77,000 |  |  |  |  |
Goodwill |  |  |  | $ 261,204 |  |  |
Percentage of fair value in excess of (short of) carrying amount |  |  |  | (27.80%) |  |  |
DaVita Medical Group (DMG) | Nevada | Long-term Reduction of 3% Percent Operating Income |  |  |  |  |  |  |
Goodwill [Line Items] |  |  |  |  |  |  |
Percentage of Fair value in excess of carrying amount |  |  |  | 2.50% |  |  |
DaVita Medical Group (DMG) | Nevada | Increase In Discount Rates By 100 Basis Points |  |  |  |  |  |  |
Goodwill [Line Items] |  |  |  |  |  |  |
Percentage of Fair value in excess of carrying amount |  |  |  | 5.50% |  |  |
DaVita Medical Group (DMG) | Florida |  |  |  |  |  |  |
Goodwill [Line Items] |  |  |  |  |  |  |
Goodwill impairment charges | $ 97,000 |  |  |  |  |  |
Goodwill |  |  |  | $ 442,835 |  |  |
Percentage of fair value in excess of (short of) carrying amount |  |  |  | (1.50%) |  |  |
DaVita Medical Group (DMG) | Florida | Long-term Reduction of 3% Percent Operating Income |  |  |  |  |  |  |
Goodwill [Line Items] |  |  |  |  |  |  |
Percentage of Fair value in excess of carrying amount |  |  |  | 1.90% |  |  |
DaVita Medical Group (DMG) | Florida | Increase In Discount Rates By 100 Basis Points |  |  |  |  |  |  |
Goodwill [Line Items] |  |  |  |  |  |  |
Percentage of Fair value in excess of carrying amount |  |  |  | 4.90% |  |  |
DaVita Medical Group (DMG) | Colorado |  |  |  |  |  |  |
Goodwill [Line Items] |  |  |  |  |  |  |
Goodwill |  |  |  | $ 16,897 |  |  |
Percentage of fair value in excess of (short of) carrying amount |  |  |  | 15.40% |  |  |
Lifeline Vascular Access |  |  |  |  |  |  |
Goodwill [Line Items] |  |  |  |  |  |  |
Goodwill |  |  |  | $ 63,111 |  |  |
Percentage of fair value in excess of (short of) carrying amount |  |  |  | 14.00% |  |  |
Lifeline Vascular Access | Long-term Reduction of 3% Percent Operating Income |  |  |  |  |  |  |
Goodwill [Line Items] |  |  |  |  |  |  |
Decrease in operating income percentage used for assessment of fair values |  |  |  | 3.00% |  |  |
Percentage of Fair value in excess of carrying amount |  |  |  | 2.60% |  |  |
Lifeline Vascular Access | Increase In Discount Rates By 100 Basis Points |  |  |  |  |  |  |
Goodwill [Line Items] |  |  |  |  |  |  |
Percentage of Fair value in excess of carrying amount |  |  |  | 5.00% |  |  |
Increase in discount rates used for assessment of fair values |  |  |  | 1.00% |  |  |

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