Employee Benefits (Tables)

6 Months Ended

Jun. 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 six months ended June 30, 2017 and 2016 were as follows:

	Three Months Ended						Six Months Ended
	June 30,						June 30,
	2017			2016			2017			2016
Pension expense (income)
Service cost	$	0.2		$	0.2		$	0.4		$	0.5
Interest cost		7.9			32.3			15.7			67.4
Expected return on plan assets		(12.6	)		(55.3	)		(24.9	)		(113.0	)
Amortization, net		1.8			8.0			3.5			15.8
Settlements and curtailments		—			96.4			—			96.4
Less: expense attributable to discontinued operations		—			(64.7	)		—			(53.5	)
Net pension income - continuing operations	$	(2.7	)	$	16.9		$	(5.3	)	$	13.6
Other postretirement benefits plan expense (income)
Service cost	$	0.3		$	1.0		$	0.6		$	2.0
Interest cost		2.8			3.1			5.6			6.1
Expected return on plan assets		(3.3	)		(3.4	)		(6.7	)		(6.8	)
Amortization, net		(0.8	)		(4.0	)		(1.5	)		(8.0	)
Net other postretirement benefit income - continuing operations	$	(1.0	)	$	(3.3	)	$	(2.0	)	$	(6.7	)