Business acquisition contingent consideration revenue earn-out period.

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- Definition

Business Combination Contingent Consideration Acquisitions

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- Definition

Number of dialysis patients.

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- Definition

Number of businesses divested by the entity during the period.

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No definition available.

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- Definition

Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 1
-Subparagraph (a)(3)
-URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16265-109275

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- Definition

Amount of direct costs of the business combination including legal, accounting, and other costs incurred to consummate the business acquisition.

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No definition available.

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- Definition

Date when the acquirer obtains control of the acquiree, in CCYY-MM-DD format.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

Percentage of voting equity interests acquired at the acquisition date in the business combination.

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-Topic 805
-SubTopic 10
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- Definition

The amount of goodwill arising from a business combination that is expected to be deductible for tax purposes.

+ References

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- Definition

Amount of liabilities incurred by the acquirer as part of consideration transferred in a business combination.

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- Definition

Amount of liability recognized arising from contingent consideration in a business combination.

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- Definition

The number of businesses acquired by the entity during the period.

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No definition available.

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The number of states the entity operates in as of the balance sheet date.

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- Definition

The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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The cash inflow associated with the amount received from the sale of a portion of the company's business, for example a segment, division, branch or other business, during the period.

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Acquisitions and divestitures - Additional Information (Detail) $ in Thousands		1 Months Ended	3 Months Ended	6 Months Ended
	May 01, 2017 USD ($) Clinic Person	Dec. 31, 2012 Clinic	Jun. 30, 2017 USD ($)	Jun. 30, 2017 USD ($) Clinic	Jun. 30, 2016 USD ($)	Dec. 31, 2016 USD ($)
Business Acquisition [Line Items]
Cash paid to acquire businesses				$ 619,839	$ 473,314
Contingent earn-out obligations associated with acquisitions				$ 16,684
Amortizable intangible assets acquired, weighted-average estimated useful lives				5 years
Business Combination, Contingent Consideration, Liability			$ 11,674	$ 11,674		$ 9,977
Other Accrued Liabilities
Business Acquisition [Line Items]
Business Combination, Contingent Consideration, Liability			4,666	4,666
Other long-term liabilities
Business Acquisition [Line Items]
Business Combination, Contingent Consideration, Liability			7,008	7,008
Other companies
Business Acquisition [Line Items]
Business Combination, Contingent Consideration, Liability			11,674	$ 11,674
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				6 years
Dialysis and other businesses
Business Acquisition [Line Items]
Number of businesses acquired \| Clinic		2
Cash paid to acquire businesses				$ 258,276
Deferred purchase price obligations				3,823
Contingent earn-out obligations associated with acquisitions				8,787
Goodwill deductible for tax purposes associated with acquisitions			207,080	207,080
Renal Ventures
Business Acquisition [Line Items]
Business Acquisition, Effective Date of Acquisition	May 01, 2017
Business Acquisition, Percentage of Voting Interests Acquired	100.00%
Number Of Dialysis Patients \| Person	2,600
Number of States in which Entity Operates	6
Proceeds from Divestiture of Businesses	$ 21,219
Business Acquisition, Transaction Costs			4,600	4,600
Cash paid to acquire businesses	$ 361,563
Goodwill deductible for tax purposes associated with acquisitions			$ 296,582	$ 296,582
Noncompete Agreements
Business Acquisition [Line Items]
Amortizable intangible assets acquired, weighted-average estimated useful lives				5 years
Noncompete Agreements \| Renal Ventures
Business Acquisition [Line Items]
Amortizable intangible assets acquired, weighted-average estimated useful lives			5 years
U.S. dialysis and related lab services \| Dialysis and other businesses
Business Acquisition [Line Items]
Number of businesses acquired \| Clinic				20
Foreign Dialysis Centers \| Dialysis and other businesses
Business Acquisition [Line Items]
Number of businesses acquired \| Clinic				55
Other Medical Businesses \| Dialysis and other businesses
Business Acquisition [Line Items]
Number of businesses acquired \| Clinic				5
Operating Dialysis Center [Member] \| Dialysis and other businesses
Business Acquisition [Line Items]
Number of Businesses Divested \| Clinic	3
Operating Dialysis Center [Member] \| Renal Ventures
Business Acquisition [Line Items]
Number of businesses acquired \| Clinic	36
Number of Businesses Divested \| Clinic	3
New Center Under Construction [Member] \| Dialysis and other businesses
Business Acquisition [Line Items]
Number of Businesses Divested \| Clinic	1
New Center Under Construction [Member] \| Renal Ventures
Business Acquisition [Line Items]
Number of businesses acquired \| Clinic	1
Home Dialysis Clinic [Member] \| Renal Ventures
Business Acquisition [Line Items]
Number of businesses acquired \| Clinic	1