Other Finance Income (Costs) (Tables)

6 Months Ended

Jun. 30, 2019

Other Nonoperating Income (Expense) [Abstract]

Schedule of other finance income (costs)

	Three Months Ended June 30,						Six Months Ended June 30,
	2019			2018			2019			2018
		(in millions)						(in millions)
Pension interest cost	$	(0.7	)	$	(0.7	)	$	(1.4	)	$	(1.5	)
Expected return on pension plan assets		0.9			0.9			1.8			1.9
Foreign currency translation on senior bank debt		(3.2	)		—			(0.3	)		—
Foreign currency remeasurement on hedging instrument		2.1			—			0.2			—
	$	(0.9	)	$	0.2		$	0.3		$	0.4