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Segment Reporting - Summary of Assets by Segment (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
ASSETS
Consolidated assets	$ 18,948,193	$ 18,755,776
Equity method and other investments	245,534	492,039
Property and equipment, net	3,149,213	2,864,121
U.S. dialysis and related lab services
ASSETS
Consolidated assets	11,776,042	11,108,386
Equity method and other investments	84,866	66,924
Other-Ancillary services and strategic initiatives
ASSETS
Consolidated assets	1,410,509	1,434,299
Equity method and other investments	160,668	425,115
DMG - Held for sale
ASSETS
Consolidated assets	5,761,642	6,213,091
Equity method and other investments	10,321	10,350
Non-US | Other-Ancillary services and strategic initiatives
ASSETS
Property and equipment, net	$ 125,932	$ 96,396

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- Definition

Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
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-Subparagraph (SX 210.7-03(a)(12))
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Total investments in (A) an entity in which the entity has significant influence, but does not have control, (B) subsidiaries that are not required to be consolidated and are accounted for using the equity and or cost method, and (C) an entity in which the reporting entity shares control of the entity with another party or group. Includes long-term advances receivable from a party that is affiliated with the reporting entity by means of direct or indirect ownership.

+ References

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+ References

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