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Earnings per share - Reconciliations of Numerators and Denominators Used to Calculate Basic and Diluted Earnings Per Share (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Earnings Per Share [Abstract]
Net income from continuing operations	$ 191,015	$ 440,905
Net (loss) income from discontinued operations	(12,329)	6,792
Net income attributable to DaVita Inc.	$ 178,686	$ 447,697
Numerators:
Weighted Average Number of Shares Issued, Basic	181,152,000	194,571,000
Contingently returnable shares held in escrow from the DaVita HealthCare Partners merger (in shares)	(2,194,000)	(2,194,000)
Weighted average shares for basic earnings per share calculation (in shares)	178,957,865	192,376,735
Basic net income from continuing operations per share attributable to DaVita Inc.	$ 1.07	$ 2.29
Income (Loss) from Discontinued Operations and Disposal of Discontinued Operations, Net of Tax, Per Basic Share	(0.07)	0.04
Basic net (loss) income per share attributable to DaVita Inc. (usd per share)	$ 1.00	$ 2.33
Contingently returnable shares held in escrow for the DaVita HealthCare Partners merger
Weighted Average Number of Shares Issued, Basic	181,152,000	194,571,000
Assumed incremental shares from stock plans (in shares)	683,000	710,000
Weighted average shares for diluted earnings per share calculation (in shares)	181,834,547	195,281,014
Diluted net income from continuing operations per share attributable to DaVita Inc.	$ 1.05	$ 2.26
Discontinued Operation, Income (Loss) from Discontinued Operation, Net of Tax, Per Diluted Share	(0.07)	0.03
Diluted net (loss) income per share attributable to DaVita Inc. (usd per share)	$ 0.98	$ 2.29
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	3,453,000	3,427,000

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