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Summary of Significant accounting policies - Estimated Useful Lives of Intangible Assets (Details)	Dec. 31, 2024
Customer relationships | Minimum
Indefinite-lived Intangible Assets [Line Items]
Amortization period	8 years
Customer relationships | Maximum
Indefinite-lived Intangible Assets [Line Items]
Amortization period	23 years
Order backlog | Minimum
Indefinite-lived Intangible Assets [Line Items]
Amortization period	3 years
Order backlog | Maximum
Indefinite-lived Intangible Assets [Line Items]
Amortization period	5 years
Trade names & brands
Indefinite-lived Intangible Assets [Line Items]
Amortization period	3 years
Patient database
Indefinite-lived Intangible Assets [Line Items]
Amortization period	7 years
Technology assets
Indefinite-lived Intangible Assets [Line Items]
Amortization period	5 years

X

- Definition

Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 350
-SubTopic 30
-Name Accounting Standards Codification
-Section 55
-Paragraph 40
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482640/350-30-55-40

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 350
-SubTopic 30
-Name Accounting Standards Codification
-Section 45
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 350
-SubTopic 30
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482665/350-30-50-3

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
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-Section 50
-Paragraph 2
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482665/350-30-50-2

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