Intangible assets (Tables)

6 Months Ended

Jun. 30, 2020

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Finite-Lived Intangible Assets

The following tables summarize the Company's intangible assets for the periods ended June 30, 2020 and December 31, 2019:

		June 30, 2020
(in millions)	Estimated Life	Cost		Additions		Accumulated Amortization		Net
Products	9-22 years	$	788.0	$	10.0	$	109.8	$	688.2
Customer relationships	8 years	28.6		—		24.7		3.9
Contract development and manufacturing	8 years	5.5		—		4.4		1.1
Total intangible assets		$	822.1	$	10.0	$	138.9	$	693.2

		December 31, 2019
(in millions)	Estimated Life	Cost		Accumulated Amortization		Net
Products	9-22 years	$	788.0	$	82.2	$	705.8
Customer relationships	8 years	28.6		23.0		$	5.6
Contract development and manufacturing	8 years	5.5		4.0		$	1.5
Total intangible assets		$	822.1	$	109.2	$	712.9