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Supplemental Data - Condensed Consolidating Balance Sheets (Detail) - USD ($) $ in Thousands | Mar. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
--- | --- | --- | ---
Condensed Balance Sheet Statements Captions [Line Items] |  |  |
Cash and cash equivalents | $ 459,242 | $ 323,038 |
Restricted cash and equivalents | 102,192 | 92,382 |
Accounts receivable, net | 1,953,422 | 1,858,608 |
Other current assets | 705,272 | 760,566 |
Current assets held for sale, net | 6,004,948 | 5,389,565 |
Total current assets | 9,225,076 | 8,424,159 |
Property and equipment, net | 3,392,266 | 3,393,669 |
Operating lease right-of-use asset | 2,736,536 | 0 |
Intangible assets, net | 118,324 | 118,846 |
Other long-term assets | 334,374 | 331,618 |
Goodwill | 6,799,368 | 6,841,960 | $ 6,610,279
Total assets | 22,605,944 | 19,110,252 |
Current liabilities | 6,477,567 | 3,647,402 |
Current liabilities held for sale | 1,753,310 | 1,243,759 |
Payables to parent | 0 |  |
Long-term operating leases | 2,625,776 | 0 |
Long-term debt and other long-term liabilities | 6,519,574 | 9,186,052 |
Noncontrolling interests subject to put provisions | 1,143,044 | 1,124,641 |
Total DaVita Inc. shareholders’ equity | 3,875,354 | 3,703,442 |
Noncontrolling interests not subject to put provisions | 211,319 | 204,956 |
Total equity | 4,086,673 | 3,908,398 |
Total liabilities and equity | 22,605,944 | $ 19,110,252 |
Physician Groups |  |  |
Condensed Balance Sheet Statements Captions [Line Items] |  |  |
Cash and cash equivalents | 0 |  |
Restricted cash and equivalents | 0 |  |
Accounts receivable, net | 0 |  |
Other current assets | 0 |  |
Current assets held for sale, net | 629,422 |  |
Total current assets | 629,422 |  |
Property and equipment, net | 0 |  |
Operating lease right-of-use asset | 0 |  |
Intangible assets, net | 0 |  |
Other long-term assets | 0 |  |
Goodwill | 0 |  |
Total assets | 629,422 |  |
Current liabilities | 0 |  |
Current liabilities held for sale | 412,368 |  |
Payables to parent | 72,539 |  |
Long-term operating leases | 0 |  |
Long-term debt and other long-term liabilities | 0 |  |
Noncontrolling interests subject to put provisions | 0 |  |
Total DaVita Inc. shareholders’ equity | 144,515 |  |
Noncontrolling interests not subject to put provisions | 0 |  |
Total equity | 144,515 |  |
Total liabilities and equity | 629,422 |  |
Unrestricted Subsidiaries |  |  |
Condensed Balance Sheet Statements Captions [Line Items] |  |  |
Cash and cash equivalents | 0 |  |
Restricted cash and equivalents | 0 |  |
Accounts receivable, net | 0 |  |
Other current assets | 0 |  |
Current assets held for sale, net | 3,288 |  |
Total current assets | 3,288 |  |
Property and equipment, net | 0 |  |
Operating lease right-of-use asset | 0 |  |
Intangible assets, net | 0 |  |
Other long-term assets | 0 |  |
Goodwill | 0 |  |
Total assets | 3,288 |  |
Current liabilities | 0 |  |
Current liabilities held for sale | 0 |  |
Payables to parent | 3,288 |  |
Long-term operating leases | 0 |  |
Long-term debt and other long-term liabilities | 0 |  |
Noncontrolling interests subject to put provisions | 0 |  |
Total DaVita Inc. shareholders’ equity | 0 |  |
Noncontrolling interests not subject to put provisions | 0 |  |
Total equity | 0 |  |
Total liabilities and equity | 3,288 |  |
Parent Company And Restricted Subsidiaries |  |  |
Condensed Balance Sheet Statements Captions [Line Items] |  |  |
Cash and cash equivalents | 459,242 |  |
Restricted cash and equivalents | 102,192 |  |
Accounts receivable, net | 1,953,422 |  |
Other current assets | 705,272 |  |
Current assets held for sale, net | 5,372,238 |  |
Total current assets | 8,592,366 |  |
Property and equipment, net | 3,392,266 |  |
Operating lease right-of-use asset | 2,736,536 |  |
Intangible assets, net | 118,324 |  |
Other long-term assets | 334,374 |  |
Goodwill | 6,799,368 |  |
Total assets | 21,973,234 |  |
Current liabilities | 6,477,567 |  |
Current liabilities held for sale | 1,340,942 |  |
Payables to parent | (75,827) |  |
Long-term operating leases | 2,625,776 |  |
Long-term debt and other long-term liabilities | 6,519,574 |  |
Noncontrolling interests subject to put provisions | 1,143,044 |  |
Total DaVita Inc. shareholders’ equity | 3,730,839 |  |
Noncontrolling interests not subject to put provisions | 211,319 |  |
Total equity | 3,942,158 |  |
Total liabilities and equity | $ 21,973,234 |  |

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