Intangible assets (Tables)

6 Months Ended

Jun. 30, 2026

Intangible Asset, Goodwill and Other [Abstract]

Schedule of Carrying Amount of Intangible Assets

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


			Estimated Useful Life
Customer relationships			8 - 23 years
Order backlog			3 - 5 years


Technology assets			5 years

The carrying amount of intangible assets as at June 30, 2026 and December 31, 2025 is as follows:



			June 30, 2026			December 31, 2025
			(in thousands)
Cost
Customer relationships			$	4,114,183		$	4,134,478
Order backlog			544,492			546,054
Trade names & brands			189,685			204,721
Patient database			2,457			170,511
Technology assets			116,458			151,754
Total cost			4,967,275			5,207,518
Accumulated amortization			(1,820,777)			(1,873,663)
Impairment			—			(86,737)
Net book value			$	3,146,498		$	3,247,118