Retirement Plans (Tables)

9 Months Ended

Sep. 30, 2019

Compensation And Retirement Disclosure [Abstract]

Components of Net Pension and Other Postretirement Benefit Plan (OPEB) Income

Components of net pension and other postretirement benefits plan (“OPEB”) income for the three and nine months ended September 30, 2019 and 2018 were as follows:

	Three Months Ended						Nine Months Ended
	September 30,						September 30,
	2019			2018			2019			2018
Pension expense (income):
Service cost	$	0.2		$	0.1		$	0.7		$	0.5
Interest cost		8.2			7.7			24.9			23.4
Expected return on plan assets		(11.5	)		(12.4	)		(34.7	)		(37.6	)
Amortization, net		1.6			2.0			4.6			5.9
Settlements		—			0.2			—			1.5
Net pension income	$	(1.5	)	$	(2.4	)	$	(4.5	)	$	(6.3	)
OPEB expense (income):
Service cost	$	—		$	(0.3	)	$	—		$	0.5
Interest cost		2.7			2.5			7.7			7.7
Expected return on plan assets		(3.3	)		(3.5	)		(9.9	)		(10.5	)
Amortization, net		(1.9	)		(0.8	)		(5.4	)		(2.2	)
Other		—			(5.1	)		—			(5.1	)
Net OPEB income	$	(2.5	)	$	(7.2	)	$	(7.6	)	$	(9.6	)