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Intangible assets and goodwill (Details) - BRL (R$) R$ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
IfrsStatementLineItems [Line Items] |  |  |  |
Write-off | R$ 413 | R$ 25 | R$ 2,374 |
Net book value | 4,796,016 | 4,041,491 |  |
Gross carrying amount [member] |  |  |  |
IfrsStatementLineItems [Line Items] |  |  |  |
Intangible assets and goodwill, balance at beginnning | 4,339,859 | 4,093,140 | 2,684,559 |
Additions | 99,993 | 150,023 | 176,110 |
Write-off | (3,271) | (447) | (2,140) |
Business combinations | 803,875 | 106,595 | 1,234,611 |
Remesurement | 2,556 | (8,637) |  |
Transfer amount |  | (815) |  |
Intangible assets and goodwill, balance at end | 5,243,012 | 4,339,859 | 4,093,140 |
Accumulated depreciation and amortisation [member] |  |  |  |
IfrsStatementLineItems [Line Items] |  |  |  |
Intangible assets and goodwill, balance at beginnning | (298,368) | (192,305) | (111,549) |
Amortization | (151,486) | (106,485) | (80,522) |
Write-off | 2,858 | 422 | (234) |
Intangible assets and goodwill, balance at end | (446,996) | (298,368) | (192,305) |
Goodwill [member] |  |  |  |
IfrsStatementLineItems [Line Items] |  |  |  |
Net book value | 1,334,699 | 1,257,045 |  |
Goodwill [member] | Gross carrying amount [member] |  |  |  |
IfrsStatementLineItems [Line Items] |  |  |  |
Intangible assets and goodwill, balance at beginnning | 1,257,045 | 1,184,336 | 810,656 |
Additions |  | 39,100 |  |
Business combinations | 75,098 | 42,246 | 373,680 |
Remesurement | 2,556 | (8,637) |  |
Intangible assets and goodwill, balance at end | 1,334,699 | 1,257,045 | 1,184,336 |
Goodwill [member] | Accumulated depreciation and amortisation [member] |  |  |  |
IfrsStatementLineItems [Line Items] |  |  |  |
Intangible assets and goodwill, balance at beginnning |  |  |  |
Amortization |  |  |  |
Intangible assets and goodwill, balance at end |  |  |  |
Licences [member] | Gross carrying amount [member] |  |  |  |
IfrsStatementLineItems [Line Items] |  |  |  |
Intangible assets and goodwill, balance at beginnning | 2,189,814 | 2,165,406 | 1,451,270 |
Additions |  | 24,408 | 108,000 |
Business combinations | 586,263 |  | 606,136 |
Intangible assets and goodwill, balance at end | 2,776,077 | 2,189,814 | 2,165,406 |
Net book value | 2,776,077 | 2,189,814 |  |
Licences [member] | Accumulated depreciation and amortisation [member] |  |  |  |
IfrsStatementLineItems [Line Items] |  |  |  |
Intangible assets and goodwill, balance at beginnning |  |  |  |
Amortization |  |  |  |
Intangible assets and goodwill, balance at end |  |  |  |
Brand names [member] |  |  |  |
IfrsStatementLineItems [Line Items] |  |  |  |
Net book value |  | 156,022 |  | R$ 167,105
Brand names [member] | Gross carrying amount [member] |  |  |  |
IfrsStatementLineItems [Line Items] |  |  |  |
Intangible assets and goodwill, balance at beginnning | 182,060 | 133,369 | 75,014 |
Write-off |  | (22) |  |
Business combinations |  | 51,185 | 58,355 |
Transfer amount |  | (2,472) |  |
Intangible assets and goodwill, balance at end | 182,060 | 182,060 | 133,369 |
Brand names [member] | Accumulated depreciation and amortisation [member] |  |  |  |
IfrsStatementLineItems [Line Items] |  |  |  |
Intangible assets and goodwill, balance at beginnning | (14,955) | (8,529) | (3,502) |
Amortization | (11,083) | (6,426) | (5,027) |
Intangible assets and goodwill, balance at end | (26,038) | (14,955) | (8,529) |
Customer-related intangible assets [member] |  |  |  |
IfrsStatementLineItems [Line Items] |  |  |  |
Net book value | 276,320 | 223,453 |  |
Customer-related intangible assets [member] | Gross carrying amount [member] |  |  |  |
IfrsStatementLineItems [Line Items] |  |  |  |
Intangible assets and goodwill, balance at beginnning | 435,816 | 431,277 | 283,539 |
Additions |  | 80 | 684 |
Business combinations | 142,451 | 3,929 | 147,054 |
Transfer amount |  | 530 |  |
Intangible assets and goodwill, balance at end | 578,267 | 435,816 | 431,277 |
Customer-related intangible assets [member] | Accumulated depreciation and amortisation [member] |  |  |  |
IfrsStatementLineItems [Line Items] |  |  |  |
Intangible assets and goodwill, balance at beginnning | (212,363) | (142,270) | (85,832) |
Amortization | (89,584) | (70,093) | (56,438) |
Intangible assets and goodwill, balance at end | (301,947) | (212,363) | (142,270) |
Computer software [member] |  |  |  |
IfrsStatementLineItems [Line Items] |  |  |  |
Net book value | 47,056 | 26,023 |  |
Computer software [member] | Gross carrying amount [member] |  |  |  |
IfrsStatementLineItems [Line Items] |  |  |  |
Intangible assets and goodwill, balance at beginnning | 43,300 | 21,759 | 16,221 |
Additions | 1,314 | 1,423 | 3,044 |
Write-off | (2,235) | (381) | 1,020 |
Business combinations | 63 | 33 | 1,474 |
Transfer amount | 28,708 | 20,466 |  |
Intangible assets and goodwill, balance at end | 71,150 | 43,300 | 21,759 |
Computer software [member] | Accumulated depreciation and amortisation [member] |  |  |  |
IfrsStatementLineItems [Line Items] |  |  |  |
Intangible assets and goodwill, balance at beginnning | (17,277) | (12,699) | (6,256) |
Amortization | (8,764) | (4,943) | (5,844) |
Write-off | 1,947 | 365 | (599) |
Intangible assets and goodwill, balance at end | (24,094) | (17,277) | (12,699) |
Education Content [Member] |  |  |  |
IfrsStatementLineItems [Line Items] |  |  |  |
Net book value | 41,971 | 43,027 |  |
Education Content [Member] | Gross carrying amount [member] |  |  |  |
IfrsStatementLineItems [Line Items] |  |  |  |
Intangible assets and goodwill, balance at beginnning | 69,589 | 17,305 | 17,305 |
Additions | 9,827 | 11,231 |  |
Write-off |  | (7) |  |
Business combinations |  | 2,627 |  |
Transfer amount | 4,785 | 38,433 |  |
Intangible assets and goodwill, balance at end | 84,201 | 69,589 | 17,305 |
Education Content [Member] | Accumulated depreciation and amortisation [member] |  |  |  |
IfrsStatementLineItems [Line Items] |  |  |  |
Intangible assets and goodwill, balance at beginnning | (26,562) | (16,672) | (7,692) |
Amortization | (15,668) | (9,634) | (8,980) |
Write-off |  | 57 |  |
Transfer amount |  | (313) |  |
Intangible assets and goodwill, balance at end | (42,230) | (26,562) | (16,672) |
Technology-based intangible assets [member] |  |  |  |
IfrsStatementLineItems [Line Items] |  |  |  |
Net book value | 96,874 | 80,656 |  |
Technology-based intangible assets [member] | Gross carrying amount [member] |  |  |  |
IfrsStatementLineItems [Line Items] |  |  |  |
Intangible assets and goodwill, balance at beginnning | 90,749 | 34,397 | 355 |
Additions | 37,712 | 32,879 | 996 |
Business combinations |  | 5,520 | 33,046 |
Transfer amount | 16 | 17,953 |  |
Intangible assets and goodwill, balance at end | 128,477 | 90,749 | 34,397 |
Technology-based intangible assets [member] | Accumulated depreciation and amortisation [member] |  |  |  |
IfrsStatementLineItems [Line Items] |  |  |  |
Intangible assets and goodwill, balance at beginnning | (10,093) | (657) | (32) |
Amortization | (21,504) | (9,436) | (625) |
Transfer amount | (6) |  |  |
Intangible assets and goodwill, balance at end | (31,603) | (10,093) | (657) |
Educational Platform [Member] |  |  |  |
IfrsStatementLineItems [Line Items] |  |  |  |
Net book value | 53,992 | 38,658 |  |
Educational Platform [Member] | Gross carrying amount [member] |  |  |  |
IfrsStatementLineItems [Line Items] |  |  |  |
Intangible assets and goodwill, balance at beginnning | 55,697 | 76,444 | 27,902 |
Additions | 23,164 | 14,761 | 39,686 |
Write-off | (911) | (9) | (2,743) |
Business combinations |  |  | 11,599 |
Transfer amount | (3,058) | (35,499) |  |
Intangible assets and goodwill, balance at end | 74,892 | 55,697 | 76,444 |
Educational Platform [Member] | Accumulated depreciation and amortisation [member] |  |  |  |
IfrsStatementLineItems [Line Items] |  |  |  |
Intangible assets and goodwill, balance at beginnning | (17,039) | (11,478) | (8,235) |
Amortization | (4,778) | (5,874) | (3,608) |
Write-off | 911 |  | 365 |
Transfer amount | 6 | 313 |  |
Intangible assets and goodwill, balance at end | (20,900) | (17,039) | (11,478) |
Software In Progress [Member] |  |  |  |
IfrsStatementLineItems [Line Items] |  |  |  |
Net book value | 12,134 | 14,734 |  |
Software In Progress [Member] | Gross carrying amount [member] |  |  |  |
IfrsStatementLineItems [Line Items] |  |  |  |
Intangible assets and goodwill, balance at beginnning | 14,734 | 28,847 | 2,297 |
Additions | 27,976 | 26,141 | 23,700 |
Write-off | (125) | (28) | (417) |
Business combinations |  |  | 3,267 |
Transfer amount | (30,451) | (40,226) |  |
Intangible assets and goodwill, balance at end | 12,134 | 14,734 | 28,847 |
Software In Progress [Member] | Accumulated depreciation and amortisation [member] |  |  |  |
IfrsStatementLineItems [Line Items] |  |  |  |
Intangible assets and goodwill, balance at beginnning |  |  |  |
Amortization |  |  |  |
Intangible assets and goodwill, balance at end |  |  |  |
Other [Member] |  |  |  |
IfrsStatementLineItems [Line Items] |  |  |  |
Net book value | 871 | 976 |  |
Other [Member] | Gross carrying amount [member] |  |  |  |
IfrsStatementLineItems [Line Items] |  |  |  |
Intangible assets and goodwill, balance at beginnning | 1,055 |  |  |
Business combinations |  | 1,055 |  |
Intangible assets and goodwill, balance at end | 1,055 | 1,055 |  |
Other [Member] | Accumulated depreciation and amortisation [member] |  |  |  |
IfrsStatementLineItems [Line Items] |  |  |  |
Intangible assets and goodwill, balance at beginnning | (79) |  |  |
Amortization | (105) | (79) |  |
Intangible assets and goodwill, balance at end | R$ (184) | R$ (79) |  |

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