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Intangible assets

3 Months Ended

Mar. 31, 2022

Goodwill and Intangible Assets Disclosure [Abstract]

Intangible assets

Intangible assets

Intangible assets, net consisted of the following:

			Three Months Ended			Year Ended
			March 31, 2022			December 31, 2021
Cost			(in thousands)
Customer relationships			$	4,055,260		$	4,056,642
Order backlog			527,451			528,022
Trade names & brands			204,648			204,685
Patient database			170,456			170,525
Technology assets			121,211			121,507
Total cost			5,079,026			5,081,381
Accumulated amortization			(486,439)			(370,538)
Net book value			$	4,592,587		$	4,710,843

The identifiable intangible assets are amortized over their estimated useful lives.

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- References

No definition available.

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- Definition

The entire disclosure for all or part of the information related to intangible assets.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-URI http://asc.fasb.org/topic&trid=2144416

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