Schedule of Other Finance Income (Costs) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Other Income and Expenses [Abstract]
Pension interest cost	$ (0.4)	$ (0.5)	$ (0.8)	$ (1.1)
Expected return on pension plan assets	0.7	0.7	1.4	1.5
Foreign currency translation on senior debt	(1.5)	(2.7)	4.6	(6.6)
Other finance income (Costs)	$ (1.2)	$ (2.5)	$ 5.2	$ (6.2)