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Intangible assets (Tables)

3 Months Ended

Mar. 31, 2023

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Finite-Lived Intangible Assets

Intangible assets are amortized on a straight-line basis over the expected useful life, as set forth in the table below:

			Estimated Useful Life
Customer relationships			23 years
Order backlog			3 years
Trade names			3 years
Patient database			7 years
Technology assets			5 years

Intangible assets, net consisted of the following:

			Three Months Ended			Year Ended
			March 31, 2023			December 31, 2022
Cost			(in thousands)
Customer relationships			$	4,077,267		$	4,076,435
Order backlog			537,247			536,934
Trade names & brands			204,640			204,621
Patient database			170,298			170,238
Technology assets			121,141			120,984
Total cost			5,110,593			5,109,212
Accumulated amortization			(946,183)			(830,553)
Net book value			$	4,164,410		$	4,278,659

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- References

No definition available.

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- Definition

Tabular disclosure of assets, excluding financial assets and goodwill, lacking physical substance with a finite life, by either major class or business segment.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 2
-Subparagraph (a)
-URI https://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 1
-Subparagraph (a)
-URI https://asc.fasb.org/extlink&oid=66006027&loc=d3e16265-109275

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