The amount of expense provided in the period for legal costs incurred on or before the balance sheet date pertaining to resolved, pending or threatened litigation, including arbitration and mediation proceedings.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.3)
-URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688

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- Definition

Amount of judgment or settlement awarded to (against) the entity in respect of litigation.

+ References

No definition available.

+ Details

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- Definition

Amount charged against operating income increasing loss contingency liability, after adjustments to reduce previously estimated charges.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14326-108349

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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

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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- Details

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- Details

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Contingencies - Additional Information (Detail) $ in Thousands	1 Months Ended				12 Months Ended
	Jan. 31, 2017 USD ($)	Mar. 31, 2016 USD ($)	Jun. 30, 2015 USD ($)	Dec. 31, 2012 Entity	Dec. 31, 2016 USD ($)
Dialysis businesses and other businesses
Other Commitments [Line Items]
Number of businesses acquired \| Entity				2
Vainer Private Civil Suit
Other Commitments [Line Items]
Litigation settlement amount			$ 450,000
Legal fees			$ 45,000
2016 U.S. Attorney Prescription Drug Investigation
Other Commitments [Line Items]
Estimated accruals for potential damages and liabilities					$ 38,330
Solari Post-Acquisition Matter
Other Commitments [Line Items]
Estimated accruals for potential damages and liabilities		$ 16,000
U.S. Department of Veterans Affairs (VA) \| Subsequent Event
Other Commitments [Line Items]
Litigation settlement amount	$ 538,000