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Aggregate Purchase Cost Allocations for Acquisitions (Detail) - USD ($) $ in Thousands | Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
--- | --- | --- | ---
Business Acquisition [Line Items] |  |  |
Goodwill | $ 9,294,479 | $ 9,415,295 | $ 9,212,974
Other dialysis acquisitions |  |  |
Business Acquisition [Line Items] |  |  |
Current assets | 3,843 | 915 | 7,215
Property and equipment | 12,436 | 5,999 | 23,760
Amortizable intangible and other long-term assets | 4,345 | 4,193 | 31,098
Goodwill | 97,093 | 221,514 | 271,267
Long-term deferred income taxes | (1,467) |  | (5,666)
Noncontrolling interests assumed | (18,905) | (25,963) | (22,880)
Liabilities assumed | (1,440) | (1,883) | (19,265)
Aggregate purchase cost | 104,864 | 295,875 | 335,077
Other dialysis acquisitions | Customer relationships |  |  |
Business Acquisition [Line Items] |  |  |
Intangible assets, other than goodwill |  | 74,515 | 31,838
Other dialysis acquisitions | Noncompetition agreements |  |  |
Business Acquisition [Line Items] |  |  |
Intangible assets, other than goodwill | $ 8,959 | $ 16,585 | $ 17,710

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- Definition Amount of intangible assets, excluding goodwill, acquired at the acquisition date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=56956791&loc=d3e4845-128472 + Details
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