Employee Benefits (Tables)

9 Months Ended

Sep. 30, 2017

Compensation And Retirement Disclosure [Abstract]

Components of Estimated Net Pension and Other Postretirement Benefit Plan Income

The components of the estimated net pension and other postretirement benefits plan income for the three and nine months ended September 30, 2017 and 2016 were as follows:

	Three Months Ended						Nine Months Ended
	September 30,						September 30,
	2017			2016			2017			2016
Pension (income) expense
Service cost	$	0.1		$	0.3		$	0.5		$	0.8
Interest cost		8.0			37.9			23.7			105.3
Expected return on plan assets		(12.7	)		(58.2	)		(37.6	)		(171.2	)
Amortization, net		1.9			7.6			5.4			23.4
Settlements and curtailments		—			1.6			—			98.0
Less: income (expense) attributable to discontinued operations		—			10.2			—			(43.3	)
Net pension (income) expense - continuing operations	$	(2.7	)	$	(0.6	)	$	(8.0	)	$	13.0
Other postretirement benefits plan income
Service cost	$	0.4		$	1.0		$	1.0		$	3.0
Interest cost		2.7			3.1			8.3			9.2
Expected return on plan assets		(3.4	)		(3.4	)		(10.1	)		(10.2	)
Amortization, net		(0.7	)		(4.0	)		(2.2	)		(12.0	)
Curtailments		—			(19.7	)		—			(19.7	)
Net other postretirement benefit income - continuing operations	$	(1.0	)	$	(23.0	)	$	(3.0	)	$	(29.7	)