v2.4.1.9

Noncontrolling Interests Subject to Put Provisions and Other Commitments - Additional Information (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015
Commitments And Contingencies Disclosure [Line Items]
Other potential commitments to provide operating capital to several dialysis centers	$ 1,000us-gaap_OtherCommitment
Schedule of Joint ventures to dissolve	Certain consolidated joint ventures are contractually scheduled to dissolve after terms ranging from ten to fifty years.
Minimum
Commitments And Contingencies Disclosure [Line Items]
Scheduled dissolution term of joint ventures	10 years
Maximum
Commitments And Contingencies Disclosure [Line Items]
Scheduled dissolution term of joint ventures	50 years

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- Definition

Dissolution term of joint ventures.

+ References

No definition available.

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- Definition

Minimum amount of other commitment not otherwise specified in the taxonomy. Excludes commitments explicitly modeled in the taxonomy, including but not limited to, long-term and short-term purchase commitments, recorded and unrecorded purchase obligations, supply commitments, registration payment arrangements, leases, debt, product warranties, guarantees, environmental remediation obligations, and pensions.

+ References

No definition available.

+ Details

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- Definition

Describes the nature of an unconditional purchase obligation that is not recognized as a liability on the balance sheet.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 440

-SubTopic 10

-Section 50

-Paragraph 4

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=6394976&loc=d3e25336-109308

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