Condensed consolidating financial statements - Condensed Consolidating Statements of Cash Flows (Detail) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Cash flows from operating activities:
Net income (loss)	$ (96,668)	$ (172,034)	$ 434,883	$ 489,876
Changes in operating assets and liabilities and non-cash items included in net income			947,365	1,078,274
Net cash provided by operating activities			1,382,248	1,568,150
Cash flows from investing activities:
Additions of property and equipment	(231,682)	(240,889)	(705,659)	(639,829)
Acquisitions			(113,526)	(726,538)
Proceeds from asset and business sales			135,268	92,529
Proceeds (purchases) from investment sales and other items, net			22,598	168,289
Net cash used in investing activities			(661,319)	(1,105,549)
Cash flows from financing activities:
Long-term debt and related financing costs, net			845,836	(108,463)
Intercompany borrowing (payments)			0	0
Other items			(1,269,175)	(421,369)
Net cash used in financing activities			(423,339)	(529,832)
Effect of exchange rate changes on cash, cash equivalents and restricted cash			(5,790)	5,449
Net decrease in cash, cash equivalents and restricted cash from continuing operations			291,800	(61,782)
Cash, cash equivalents and restricted cash of continuing operations at beginning of the year			518,920	683,463
Cash, cash equivalents and restricted cash of continuing operations at end of the period	540,155	538,987	540,155	538,987
Consolidating adjustments
Cash flows from operating activities:
Net income (loss)	74,799	160,813	(561,504)	(577,761)
Changes in operating assets and liabilities and non-cash items included in net income			561,504	577,761
Net cash provided by operating activities			0	0
Cash flows from investing activities:
Additions of property and equipment			0	0
Acquisitions			0	0
Proceeds from asset and business sales			0	0
Proceeds (purchases) from investment sales and other items, net			0	0
Net cash used in investing activities			0	0
Cash flows from financing activities:
Long-term debt and related financing costs, net			0	0
Intercompany borrowing (payments)			0	0
Other items			0	0
Net cash used in financing activities			0	0
Effect of exchange rate changes on cash, cash equivalents and restricted cash			0	0
Net decrease in cash, cash equivalents and restricted cash from continuing operations			0	0
Cash, cash equivalents and restricted cash of continuing operations at beginning of the year			0	0
Cash, cash equivalents and restricted cash of continuing operations at end of the period	0	0	0	0
DaVita Inc. \| Reportable Legal Entities
Cash flows from operating activities:
Net income (loss)	(136,796)	(214,476)	309,166	360,222
Changes in operating assets and liabilities and non-cash items included in net income			(235,558)	(282,651)
Net cash provided by operating activities			73,608	77,571
Cash flows from investing activities:
Additions of property and equipment			(124,585)	(94,385)
Acquisitions			0
Proceeds from asset and business sales			0	0
Proceeds (purchases) from investment sales and other items, net			32,345	123,894
Net cash used in investing activities			(92,240)	29,509
Cash flows from financing activities:
Long-term debt and related financing costs, net			866,537	(92,721)
Intercompany borrowing (payments)			454,410	188,977
Other items			(1,154,921)	(305,630)
Net cash used in financing activities			166,026	(209,374)
Effect of exchange rate changes on cash, cash equivalents and restricted cash			0	0
Net decrease in cash, cash equivalents and restricted cash from continuing operations			147,394	(102,294)
Cash, cash equivalents and restricted cash of continuing operations at beginning of the year			150,307	549,921
Cash, cash equivalents and restricted cash of continuing operations at end of the period	297,701	447,627	297,701	447,627
Guarantor subsidiaries \| Reportable Legal Entities
Cash flows from operating activities:
Net income (loss)	(121,771)	(249,861)	255,681	240,548
Changes in operating assets and liabilities and non-cash items included in net income			469,008	585,836
Net cash provided by operating activities			724,689	826,384
Cash flows from investing activities:
Additions of property and equipment			(385,765)	(305,261)
Acquisitions			(18,549)	(627,324)
Proceeds from asset and business sales			47,025	90,533
Proceeds (purchases) from investment sales and other items, net			(9,746)	(4,788)
Net cash used in investing activities			(367,035)	(846,840)
Cash flows from financing activities:
Long-term debt and related financing costs, net			(9,135)	(10,394)
Intercompany borrowing (payments)			(217,518)	(7,968)
Other items			(94,281)	(1,432)
Net cash used in financing activities			(320,934)	(19,794)
Effect of exchange rate changes on cash, cash equivalents and restricted cash			0	0
Net decrease in cash, cash equivalents and restricted cash from continuing operations			36,720	(40,250)
Cash, cash equivalents and restricted cash of continuing operations at beginning of the year			9,384	8,687
Cash, cash equivalents and restricted cash of continuing operations at end of the period	11,985	10,371	11,985	10,371
Non- Guarantor subsidiaries \| Reportable Legal Entities
Cash flows from operating activities:
Net income (loss)	87,100	131,490	431,540	466,867
Changes in operating assets and liabilities and non-cash items included in net income			152,411	197,328
Net cash provided by operating activities			583,951	664,195
Cash flows from investing activities:
Additions of property and equipment			(195,309)	(240,183)
Acquisitions			(94,977)	(99,214)
Proceeds from asset and business sales			88,243	1,996
Proceeds (purchases) from investment sales and other items, net			(1)	49,183
Net cash used in investing activities			(202,044)	(288,218)
Cash flows from financing activities:
Long-term debt and related financing costs, net			(11,566)	(5,348)
Intercompany borrowing (payments)			(236,892)	(181,009)
Other items			(19,973)	(114,307)
Net cash used in financing activities			(268,431)	(300,664)
Effect of exchange rate changes on cash, cash equivalents and restricted cash			(5,790)	5,449
Net decrease in cash, cash equivalents and restricted cash from continuing operations			107,686	80,762
Cash, cash equivalents and restricted cash of continuing operations at beginning of the year			359,229	124,855
Cash, cash equivalents and restricted cash of continuing operations at end of the period	$ 230,469	$ 80,989	230,469	80,989
Discontinued Operations
Cash flows from financing activities:
Net decrease in cash, cash equivalents and restricted cash from continuing operations			270,565	82,694
Discontinued Operations \| Consolidating adjustments
Cash flows from financing activities:
Net decrease in cash, cash equivalents and restricted cash from continuing operations			0	0
Discontinued Operations \| DaVita Inc. \| Reportable Legal Entities
Cash flows from financing activities:
Net decrease in cash, cash equivalents and restricted cash from continuing operations			0	0
Discontinued Operations \| Guarantor subsidiaries \| Reportable Legal Entities
Cash flows from financing activities:
Net decrease in cash, cash equivalents and restricted cash from continuing operations			34,119	(41,934)
Discontinued Operations \| Non- Guarantor subsidiaries \| Reportable Legal Entities
Cash flows from financing activities:
Net decrease in cash, cash equivalents and restricted cash from continuing operations			236,446	124,628
Continuing Operations
Cash flows from financing activities:
Net decrease in cash, cash equivalents and restricted cash from continuing operations			21,235	(144,476)
Continuing Operations \| Consolidating adjustments
Cash flows from financing activities:
Net decrease in cash, cash equivalents and restricted cash from continuing operations			0	0
Continuing Operations \| DaVita Inc. \| Reportable Legal Entities
Cash flows from financing activities:
Net decrease in cash, cash equivalents and restricted cash from continuing operations			147,394	(102,294)
Continuing Operations \| Guarantor subsidiaries \| Reportable Legal Entities
Cash flows from financing activities:
Net decrease in cash, cash equivalents and restricted cash from continuing operations			2,601	1,684
Continuing Operations \| Non- Guarantor subsidiaries \| Reportable Legal Entities
Cash flows from financing activities:
Net decrease in cash, cash equivalents and restricted cash from continuing operations			$ (128,760)	$ (43,866)

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