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Stock-based compensation - Summary of Incentive Award Plans (Details)	6 Months Ended
	Jun. 30, 2024 $ / shares shares
Time-Based Restricted Stock Unit Awards
Units
Unvested as of December 31, 2023 (in shares) | shares	0
Awards granted in 2024 (in shares) | shares	32,202
Awards vested in 2024 (in shares) | shares	0
Awards forfeited in 2024 (in shares) | shares	(777)
Unvested as of June 30, 2024 (in shares) | shares	31,425
Weighted average grant date fair value per unit
Unvested as of December 31, 2023 (in dollars per share) | $ / shares	$ 0
Awards granted in 2024 (in dollars per share) | $ / shares	96.50
Awards vested in 2024 (in dollars per share) | $ / shares	0
Awards forfeited in 2024 (in dollars per share) | $ / shares	96.50
Unvested as of June 30, 2024 (in dollars per share) | $ / shares	$ 96.50
BGLH Restricted Class B Units
Units
Unvested as of December 31, 2023 (in shares) | shares	151,200
Awards granted in 2024 (in shares) | shares	31,088
Awards vested in 2024 (in shares) | shares	(7,778)
Unvested as of June 30, 2024 (in shares) | shares	174,510
Weighted average grant date fair value per unit
Unvested as of December 31, 2023 (in dollars per share) | $ / shares	$ 89.29
Awards granted in 2024 (in dollars per share) | $ / shares	96.50
Awards vested in 2024 (in dollars per share) | $ / shares	90.00
Unvested as of June 30, 2024 (in dollars per share) | $ / shares	$ 90.69
Management Profits Interests Class C Units
Units
Unvested as of December 31, 2023 (in shares) | shares	6,695,123
Awards granted in 2024 (in shares) | shares	1,487,235
Awards vested in 2024 (in shares) | shares	(3,094,024)
Awards forfeited in 2024 (in shares) | shares	(147,976)
Unvested as of June 30, 2024 (in shares) | shares	4,940,358
Weighted average grant date fair value per unit
Unvested as of December 31, 2023 (in dollars per share) | $ / shares	$ 2.31
Awards granted in 2024 (in dollars per share) | $ / shares	2.93
Awards vested in 2024 (in dollars per share) | $ / shares	1.78
Awards forfeited in 2024 (in dollars per share) | $ / shares	2.69
Unvested as of June 30, 2024 (in dollars per share) | $ / shares	$ 2.82

X

- Definition

The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(iii)(03)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

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X

- Definition

Weighted average fair value as of the grant date of equity-based award plans other than stock (unit) option plans that were not exercised or put into effect as a result of the occurrence of a terminating event.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(iii)(03)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

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X

- Definition

The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(iii)(01)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

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X

- Definition

The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(iii)(01)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

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X

- Definition

The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(i)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(ii)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

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X

- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

+ References

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X

- Definition

Per share or unit weighted-average fair value of nonvested award under share-based payment arrangement. Excludes share and unit options.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(i)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
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-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(ii)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

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X

- Definition

The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(iii)(02)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

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- Definition

The weighted average fair value as of grant date pertaining to an equity-based award plan other than a stock (or unit) option plan for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash in accordance with the terms of the arrangement.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(iii)(02)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

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