Long-term Incentive Compensation and Shareholders’ Equity (Tables)

12 Months Ended

Dec. 31, 2017

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Summary of Status of Awards Under Stock-Based Compensation Plans and Agreements

A combined summary of the status of the Company’s stock-settled awards under the 2011 Plan, including base shares for stock-settled stock appreciation rights (SSARs) and stock-settled stock unit awards is as follows:

	Year ended December 31, 2017
	Stock appreciation rights						Stock units
	Awards			Weighted average exercise price		Weighted average remaining contractual life	Awards			Weighted average remaining contractual life
Outstanding at beginning of year	7,337,266			$	64.90		785,553
Granted	1,692,154			65.29			528,968
Exercised	(2,022,418		)	54.27			(119,000		)
Canceled	(358,803		)	70.61			(119,949		)
Outstanding at end of period	6,648,199			$	67.92	2.3	1,075,572			2.0
Exercisable at end of period	2,628,008			$	62.78	0.6	—			0.0
Weighted-average fair value of grants
2017	$	14.51					$	65.73
2016	$	13.74					$	70.99
2015	$	17.97					$	80.25

Summary of Range of Exercise Prices

	Awards Outstanding	Weighted average exercise price		Awards exercisable	Weighted average exercise price
Range of SSARs base prices
$50.01–$60.00	1,856,145	59.05		1,712,675	59.15
$60.01–$70.00	2,715,542	66.70		632,849	67.47
$70.01–$80.00	1,443,749	74.77		243,041	73.16
$80.01–$90.00	632,763	83.59		39,443	81.51
Total	6,648,199	$	67.92	2,628,008	$	62.78

Summary of Weighted Average Valuation Inputs

A summary of the weighted average valuation inputs described above used for estimating the grant-date fair value of stock-settled stock appreciation rights awards granted in the periods indicated is as follows: 

	Year ended December 31,
	2017		2016		2015
Expected term	4.2		4.2		4.1
Expected volatility	23.9	%	21.0	%	24.6	%
Expected dividend yield	—	%	—	%	—	%
Risk-free interest rate	1.7	%	1.0	%	1.5	%

Effects of Changes in DaVita Inc's Ownership Interest on Company's Equity

The effects of changes in DaVita Inc.’s ownership interest in consolidated subsidiaries on the Company’s equity are as follows: 

	Year ended December 31,
	2017			2016			2015
Net income attributable to DaVita Inc.	$	663,618		$	879,874		$	269,732
Changes in paid-in-capital for:
Sales of noncontrolling interest	(114		)	—			—
Purchase of noncontrolling interests	(2,752		)	(13,105		)	(55,826		)
Net transfer in noncontrolling interests	(2,866		)	(13,105		)	(55,826		)
Net income attributable to DaVita Inc. net of transfers in noncontrolling interests	$	660,752		$	866,769		$	213,906