Retirement Benefit Plans (Tables)

6 Months Ended

Jun. 30, 2020

Retirement Benefit Plans

Schedule of components of net periodic benefit credit

The components of net periodic benefit credit in respect of defined benefit plans for the three and six months ended June 30, 2020 and 2019, include the following (in millions):

	Three months ended				Six months ended
	June 30,				June 30,
	2020		2019		2020		2019
Service cost	$	(0.2)	$	(0.3)	$	(0.4)	$	(0.6)
Interest cost		(4.3)		(4.6)		(8.6)		(9.3)
Amortization of prior service cost		(0.1)		—		(0.2)		—
Expected return on plan assets		4.6		5.2		9.2		10.6
Net periodic benefit credit		—		0.3	$	—	$	0.7