Intangible assets and goodwill - Narrative (Details) - USD ($)	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Goodwill [Line Items]
Amortization of intangible assets	$ 59,900,000	$ 58,500,000	$ 59,800,000
Goodwill impairment	6,700,000	41,700,000	0
Goodwill	218,200,000	224,900,000	266,700,000
Services
Goodwill [Line Items]
Goodwill impairment	6,700,000	0
Goodwill	0	6,700,000	6,700,000
Products
Goodwill [Line Items]
Goodwill impairment	0	41,700,000
Goodwill	218,200,000	218,200,000	$ 260,000,000.0
CDMO - Services
Goodwill [Line Items]
Goodwill	0
All Other Reporting Units, Excluding CDMO - Services
Goodwill [Line Items]
Goodwill impairment	$ 0
All Other Reporting Units, Excluding Commercial Products
Goodwill [Line Items]
Goodwill impairment		$ 0