Intangible assets (Tables)

3 Months Ended

Mar. 31, 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 March 31, 2020 and December 31, 2019:

		March 31, 2020
(in millions)	Estimated Life	Cost		Additions		Accumulated Amortization		Net
Products	9-22 years	$	788.0	$	10.0	$	96.0	$	702.0
Customer relationships	8 years	28.6		—		23.8		4.8
Contract development and manufacturing	8 years	5.5		—		4.2		1.3
Total intangible assets		$	822.1	$	10.0	$	124.0	$	708.1

		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