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Intangible assets and goodwill
 9 Months Ended
Sep. 30, 2024
Goodwill and Intangible Assets Disclosure [Abstract]  
Intangible assets and goodwill Intangible assets and goodwill
The Company’s finite-lived intangible assets consist of products acquired via business combinations or asset acquisitions. The following table summarizes the Company’s finite-lived intangible assets:
Weighted Average Useful Life in YearsSeptember 30, 2024December 31, 2023
Gross Carrying AmountAccumulated AmortizationNet Carrying AmountGross Carrying AmountAccumulated AmortizationNet Carrying Amount
Products13.5$855.4 $337.6 $517.8 $855.4 $288.8 $566.6 
Customer relationships0.028.6 28.6 — 28.6 28.6 — 
CDMO0.05.5 5.5 — 5.5 5.5 — 
Total intangible assets$889.5 $371.7 $517.8 $889.5 $322.9 $566.6 
Amortization expense associated with the Company’s finite-lived intangible assets was recorded as follows:
Three Months Ended September 30,Nine Months Ended September 30,
2024202320242023
Amortization of intangible assets$16.3 $16.3 $48.8 $49.4 
The Company had no remaining goodwill balance on the Condensed Consolidated Balance Sheets as of September 30, 2024 and December 31, 2023 due to impairment charges recorded during the third quarter of 2023.