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Acquisitions and Divestitures - Additional Information (Detail) $ in Thousands |  |  |  |  | 1 Months Ended | 6 Months Ended | 12 Months Ended
--- | --- | --- | --- | --- | --- | --- | ---
Aug. 09, 2016 USD ($) Clinic | Aug. 01, 2016 USD ($) | Jun. 01, 2016 USD ($) | Mar. 01, 2016 USD ($) Provider Clinic | Dec. 31, 2012 Entity | Jun. 30, 2016 USD ($) | Dec. 31, 2016 USD ($) Entity | Dec. 31, 2015 USD ($) Entity | Dec. 31, 2014 USD ($) Entity
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Gain (loss) on sales of business interests |  |  |  |  |  |  | $ 404,165 |  |
Cash paid to acquire business |  |  |  |  |  |  | $ 563,856 | $ 96,469 | $ 272,094
Amortizable intangible assets acquired, weighted-average estimated useful lives |  |  |  |  |  |  | 7 years | 8 years | 10 years
Goodwill deductible for tax purposes associated with acquisitions |  |  |  |  |  |  | $ 173,718 | $ 73,733 | $ 175,247
Contingent earn-out obligations associated with acquisitions |  |  |  |  |  |  | 1,511 |  |
Deferred purchase price obligations |  |  |  |  |  |  |  |  | $ 136
Additional cash consideration in the form of earn-out payments |  |  |  |  |  |  | 7,217 | 29,050 |
Fair value of contingent earn-out consideration |  |  |  |  |  |  | 9,977 | $ 34,135 |
Other Accrued Liabilities |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Fair value of contingent earn-out consideration |  |  |  |  |  |  | 7,217 |  |
Other long-term liabilities |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Fair value of contingent earn-out consideration |  |  |  |  |  |  | 2,760 |  |
Other companies |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Additional cash consideration in the form of earn-out payments |  |  |  |  |  |  | 19,557 |  |
Fair value of contingent earn-out consideration |  |  |  |  |  |  | $ 9,977 |  |
Customer relationships |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Amortizable intangible assets acquired, weighted-average estimated useful lives |  |  |  |  |  |  |  |  | 10 years
Noncompetition agreements |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Amortizable intangible assets acquired, weighted-average estimated useful lives |  |  |  |  |  |  | 7 years | 8 years | 8 years
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 |  |  |  |  |  |  | 8 years |  |
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 |  |  |  |  |
Number of providers in primary and specialty | Provider |  |  |  | 500 |  |  |  |  |
Amortizable intangible assets acquired, weighted-average estimated useful lives |  |  |  |  |  |  | 6 years |  |
Goodwill deductible for tax purposes associated with acquisitions |  |  |  |  |  |  | $ 0 |  |
The Everett Clinic Medical Group (TEC) | Minimum |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Number of dialysis clinic patients | Clinic |  |  |  | 315,000 |  |  |  |  |
Dialysis-related businesses and other ancillary businesses |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Cash paid to acquire business |  |  |  |  |  |  | 170,169 | $ 96,469 | $ 272,094
Number of businesses acquired | Entity |  |  |  |  | 2 |  |  |  |
Contingent earn-out obligations associated with acquisitions |  |  |  |  |  |  | 1,511 |  |
Deferred purchase price obligations |  |  |  |  |  |  | $ 18,373 | $ 8,395 | $ 23,781
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 |  |  |  |  |  |  |  |
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 |  |  |
U.S. Dialysis And Related Lab Services | Dialysis-related businesses and other ancillary businesses |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Number of businesses acquired | Entity |  |  |  |  |  |  | 8 | 6 | 18
Vascular access | Dialysis-related businesses and other ancillary businesses |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Number of businesses acquired | Entity |  |  |  |  |  |  |  | 3 |
Vascular access | Renal Ventures Limited, LLC |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Ownership interest percentage | 51.00% |  |  |  |  |  |  |  |
Number of outpatient dialysis centers acquired | Clinic | 1 |  |  |  |  |  |  |  |
Foreign Dialysis Centers | Dialysis-related businesses and other ancillary businesses |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Number of businesses acquired | Entity |  |  |  |  |  |  | 21 | 21 | 7
Khazanah Nasional Berhad and Mitsui and Co., LTD | Asia-Pacific dialysis business |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |
Subscribed investment amount |  | $ 300,000 |  |  |  |  |  |  |
Investment period |  | 3 years |  |  |  |  |  |  |
Ownership interest percentage |  | 40.00% |  |  |  |  |  |  |
Initial investment in equity method investment |  | $ 50,000 |  |  |  |  |  |  |
Non-cash non-taxable gain |  |  |  |  |  |  | $ 374,374 |  |

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