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Concentrations - Additional Information (Detail) $ in Thousands | 12 Months Ended
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Dec. 31, 2016 USD ($) Project Customer | Dec. 31, 2015 USD ($) Customer | Dec. 31, 2014
Concentration Risk [Line Items] |  |  |
Number of customers accounting for approximately 11% of consolidated net revenues | Customer | 1 |  |
Number of customers accounting for more than 10% of consolidated accounts receivable | Customer | 0 | 0 |
Sales Revenue Services Net |  |  |
Concentration Risk [Line Items] |  |  |
Concentration risk, customer | One commercial payor, Humana, accounted for approximately 11% of total consolidated net revenues. |  |
Sales Revenue Services Net | Customer Concentration Risk | Humana |  |  |
Concentration Risk [Line Items] |  |  |
Concentration Risk, Percentage | 11.00% |  |
Accounts Receivable |  |  |
Concentration Risk [Line Items] |  |  |
Concentration risk, customer | There is no single commercial payor that accounted for more than 10% of total consolidated accounts receivable at December 31, 2016 and 2015. |  |
Accounts Receivable | Government-based Programs, Medicare and Medicaid |  |  |
Concentration Risk [Line Items] |  |  |
Concentration Risk, Percentage | 80.00% |  |
U.S. Dialysis And Related Lab Services | Sales Revenue Services Net | Government-based Programs, Medicare and Medicaid |  |  |
Concentration Risk [Line Items] |  |  |
Concentration Risk, Percentage | 64.00% | 66.00% | 67.00%
Accounts receivable, and other receivables, from Medicare and Medicaid-assigned plans | $ | $ 831,445 | $ 830,060 |
DaVita Medical Group (DMG) |  |  |
Concentration Risk [Line Items] |  |  |
Number of health plans | Project | 3 |  |
DaVita Medical Group (DMG) | Sales Revenue Services Net | Government-based Programs, Medicare and Medicaid |  |  |
Concentration Risk [Line Items] |  |  |
Concentration Risk, Percentage | 72.00% | 70.00% | 71.00%
DaVita Medical Group (DMG) | Sales Revenue Services Net | Product Concentration Risk |  |  |
Concentration Risk [Line Items] |  |  |
Concentration Risk, Percentage | 63.00% | 61.00% | 64.00%
DaVita Medical Group (DMG) | Accounts Receivable | Customer Concentration Risk |  |  |
Concentration Risk [Line Items] |  |  |
Accounts receivable, and other receivables, from Medicare and Medicaid-assigned plans | $ | $ 289,798 | $ 231,278 |

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- Definition Description of risks that arise due to the volume of business transacted with a three health plans. At a minimum, the description informs financial statement users of the general nature of the risk, but excludes "Information about Major Customers" that may be disclosed elsewhere (for instance, segment disclosures). + References No definition available. + Details
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- Definition Description of risks that arise due to the volume of business transacted with a particular customer. At a minimum, the description informs financial statement users of the general nature of the risk, but excludes "Information about Major Customers" that may be disclosed elsewhere (for instance, segment disclosures). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 18 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=64851502&loc=d3e6351-108592 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=64851502&loc=d3e6404-108592 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 16 -URI http://asc.fasb.org/extlink&oid=64851502&loc=d3e6327-108592 + Details
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