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Stockholder's equity (Tables) | 12 Months Ended
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Dec. 31, 2020
Equity [Abstract] |
Shares repurchases summary table | The following table summarizes the Company's repurchases of its common stock during the years ended December 31, 2020, 2019 and 2018:
| 2020 |  | 2019 |  | 2018
Open market repurchases |  |  |  |  |
Shares | 8,495 |  |  | 19,218 |  |  | 16,844 |
Amounts paid | $ | 741,850 |  |  | $ | 1,168,321 |  |  | $ | 1,153,511 |
Average paid per share | $ | 87.32 |  |  | $ | 60.79 |  |  | $ | 68.48 |
Tender offers (1) |  |  |  |  |
Shares | 7,982 |  |  | 21,802 |  |  |
Amounts paid | $ | 704,917 |  |  | $ | 1,234,154 |  |  |
Average paid per share | $ | 88.32 |  |  | $ | 56.61 |  |  |
Total |  |  |  |  |
Shares | 16,477 |  |  | 41,020 |  |  | 16,844 |
Amounts paid | $ | 1,446,767 |  |  | $ | 2,402,475 |  |  | $ | 1,153,511 |
Average paid per share | $ | 87.80 |  |  | $ | 58.57 |  |  | $ | 68.48 |
(1)The aggregate amounts paid for shares repurchased pursuant to the Company's 2020 and 2019 tender offers for its shares during the years ended December 31, 2020 and 2019, include their clearing prices of $88.00 and $56.50 per share, respectively, plus related fees and expenses of $2,529 and $2,343, respectively.
Net effect of transfers from to noncontrolling interests on stock holders equity disclosure | The effects of changes in DaVita Inc.’s ownership interests in consolidated subsidiaries on the Company’s consolidated equity were as follows:
| Year ended December 31,
| 2020 |  | 2019 |  | 2018
Net income attributable to DaVita Inc. | $ | 773,642 |  |  | $ | 810,981 |  |  | $ | 159,394 |
Changes in paid-in capital for: |  |  |  |  |
Purchases of noncontrolling interests | 4,364 |  |  | (37,145) |  |  | (17,897) |
Sales of noncontrolling interest | — |  |  | — |  |  | 79 |
Net transfers in noncontrolling interests | 4,364 |  |  | (37,145) |  |  | (17,818) |
Net income attributable to DaVita Inc. net of transfers in noncontrolling interests | $ | 778,006 |  |  | $ | 773,836 |  |  | $ | 141,576 |

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