Business acquisition contingent consideration revenue earn-out period.

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- Definition

Business Combination Contingent Consideration Acquisitions

+ References

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.

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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

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

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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

Amount of gain (loss) from sale and disposal of integrated set of activities and assets capable of being conducted and managed for purpose of providing return in form of dividend, lower cost, or other economic benefit to investor, owner, member and participant.

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- Definition

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

+ References

No definition available.

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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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- Definition

Percentage of subsidiary's or equity investee's stock owned by parent company before stock transaction.

+ References

No definition available.

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Acquisitions and divestitures - Additional Information (Detail) $ in Thousands		3 Months Ended		6 Months Ended
	Jun. 01, 2018 USD ($)	Jun. 30, 2018 USD ($)	Jun. 30, 2017 USD ($)	Jun. 30, 2018 USD ($) Clinic	Jun. 30, 2017 USD ($)	Dec. 31, 2017 USD ($)
Business Acquisition [Line Items]
Cash paid to acquire businesses				$ 89,465	$ 619,839
Contingent earn-out obligations and liabilities assumed associated with acquisitions				14,333
Gain (Loss) on Disposition of Business		$ 33,957	$ 0	33,957	$ 6,273
Contingent earn-out obligations		7,489		7,489		$ 6,388
Other Accrued Liabilities
Business Acquisition [Line Items]
Contingent earn-out obligations		438		438
Other long-term liabilities
Business Acquisition [Line Items]
Contingent earn-out obligations		7,051		7,051
Other companies
Business Acquisition [Line Items]
Contingent earn-out obligations		7,489		$ 7,489
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				5 years
Dialysis and other businesses
Business Acquisition [Line Items]
Cash paid to acquire businesses				$ 88,185
Deferred purchase price obligations				15,968
Contingent earn-out obligations and liabilities assumed associated with acquisitions				4,900
Goodwill deductible for tax purposes associated with acquisitions		$ 100,885		$ 100,885
Noncompete Agreements
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				2
Foreign Dialysis Centers \| Dialysis and other businesses
Business Acquisition [Line Items]
Number of businesses acquired \| Clinic				18
Paladina
Business Acquisition [Line Items]
Sale of Stock, Percentage of Ownership before Transaction	100.00%
Gain (Loss) on Disposition of Business	$ 35,205