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Acquisitions and Divestitures - Additional Information (Detail) $ in Thousands |  |  |  |  | 1 Months Ended | 3 Months Ended | 6 Months Ended | 9 Months Ended |
--- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Aug. 09, 2016 USD ($) Clinic | Aug. 01, 2016 USD ($) | Jun. 01, 2016 USD ($) | Mar. 01, 2016 USD ($) | Dec. 31, 2012 Entity | Sep. 30, 2016 USD ($) | Jun. 30, 2016 USD ($) | Sep. 30, 2016 USD ($) Entity | Sep. 30, 2015 USD ($) | Dec. 31, 2015 USD ($)
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |
Gain (loss) on sales of business interests |  |  |  |  |  | $ 374,374 |  | $ 404,165 |  |
Cash paid to acquire business |  |  |  |  |  |  |  | $ 497,331 | $ 90,709 |
Amortizable intangible assets acquired, weighted-average estimated useful lives |  |  |  |  |  |  |  | 7 years |  |
Goodwill deductible for tax purposes associated with acquisitions |  |  |  |  |  | 108,874 |  | $ 108,874 |  |
Fair value of contingent earn-out consideration |  |  |  |  |  | 14,198 |  | 14,198 |  | $ 34,135
Other Accrued Liabilities |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |
Fair value of contingent earn-out consideration |  |  |  |  |  | 12,836 |  | 12,836 |  |
Other long-term liabilities |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |
Fair value of contingent earn-out consideration |  |  |  |  |  | 1,362 |  | 1,362 |  |
Other companies |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |
Additional cash consideration in the form of earn-out payments |  |  |  |  |  | 95,804 |  | 95,804 |  |
Fair value of contingent earn-out consideration |  |  |  |  |  | 14,198 |  | $ 14,198 |  |
Minimum | Other companies | EBITDA or Operating Income Performance Targets or Quality Margins |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |
Earn-out consideration payment period |  |  |  |  |  |  |  | 1 year |  |
Maximum | Other companies | EBITDA or Operating Income Performance Targets or Quality Margins |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |
Earn-out consideration payment period |  |  |  |  |  |  |  | 2 years |  |
Noncompetition agreements |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |
Amortizable intangible assets acquired, weighted-average estimated useful lives |  |  |  |  |  |  |  | 7 years |  |
DaVita Medical Group (DMG) | Arizona |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |
Gain (loss) on sales of business interests |  |  | $ (10,489) |  |  |  |  |  |  |
DaVita Medical Group (DMG) | Tandigm Health |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |
Ownership interest, before sale |  |  |  |  |  |  | 50.00% |  |  |
Ownership interest, after sale |  |  |  |  |  |  | 19.00% |  |  |
Gain (loss) on sales of business interests |  |  |  |  |  |  | $ 40,280 |  |  |
The Everett Clinic Medical Group (TEC) |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |
Ownership interest percentage |  |  |  | 100.00% |  |  |  |  |  |
Date of acquisition agreement |  |  |  |  |  |  |  | Nov. 23, 2015 |  |
Effective date of acquisition |  |  |  |  |  |  |  | Mar. 01, 2016 |  |
Cash paid to acquire business |  |  |  | $ 393,687 |  |  |  |  |  |
Assumptions of certain liabilities |  |  |  | $ 7,284 |  |  |  |  |  |
Amortizable intangible assets acquired, weighted-average estimated useful lives |  |  |  |  |  |  |  | 6 years |  |
Goodwill deductible for tax purposes associated with acquisitions |  |  |  |  |  | $ 0 |  | $ 0 |  |
Dialysis businesses and other businesses |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |
Cash paid to acquire business |  |  |  |  |  |  |  | 103,644 |  |
Number of businesses acquired | Entity |  |  |  |  | 2 |  |  |  |  |
Deferred purchase price obligations |  |  |  |  |  |  |  | $ 15,397 |  |
Dialysis businesses and other businesses | U.S. Dialysis And Related Lab Services |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |
Number of businesses acquired | Entity |  |  |  |  |  |  |  | 4 |  |
Renal Ventures Limited, LLC |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |
Ownership interest percentage | 100.00% |  |  |  |  |  |  |  |  |
Cash paid to acquire business | $ 360,000 |  |  |  |  |  |  |  |  |
Number of outpatient dialysis centers acquired | Clinic | 38 |  |  |  |  |  |  |  |  |
Renal Ventures Limited, LLC | New Center Under Construction |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |
Number of outpatient dialysis centers acquired | Clinic | 1 |  |  |  |  |  |  |  |  |
Renal Ventures Limited, LLC | Vascular Access Clinic |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |
Ownership interest percentage | 51.00% |  |  |  |  |  |  |  |  |
Number of outpatient dialysis centers acquired | Clinic | 1 |  |  |  |  |  |  |  |  |
Foreign Dialysis Centers | Dialysis businesses and other businesses | Other Segments |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |
Number of businesses acquired | Entity |  |  |  |  |  |  |  | 11 |  |
Other Medical Businesses | Dialysis businesses and other businesses | Other Segments |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |
Number of businesses acquired | Entity |  |  |  |  |  |  |  | 5 |  |
Khazanah Nasional Berhad and Mitsui and Co., LTD | Asia-Pacific dialysis business |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |
Subscribed investment amount |  | $ 300,000 |  |  |  |  |  |  |  |
Ownership interest percentage |  | 40.00% |  |  |  |  |  |  |  |
Investment period |  | 3 years |  |  |  |  |  |  |  |
Initial investment in equity method investment |  | $ 50,000 |  |  |  |  |  |  |  |
Non-cash non-taxable gain |  |  |  |  |  |  |  | $ 374,374 |  |

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