Employee Benefits (Tables)

9 Months Ended

Sep. 30, 2014

Compensation And Retirement Disclosure [Abstract]

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

The components of the estimated net pension and other postretirement benefits plan income for the three and nine months ended September 30, 2014 and 2013 were as follows:

	Three Months Ended						Nine Months Ended
	September 30,						September 30,
	2014			2013			2014			2013
Pension (income) expense
Service cost	$	0.5		$	0.7		$	1.6		$	2.3
Interest cost		49.7			44.6			146.3			133.7
Expected return on plan assets		(65.9	)		(60.6	)		(195.1	)		(181.8	)
Amortization, net		7.8			12.4			24.1			37.6
Settlements		—			0.8			—			0.8
Net pension income	$	(7.9	)	$	(2.1	)	$	(23.1	)	$	(7.4	)
Other postretirement benefits plan (income) expense
Service cost	$	1.1		$	1.8		$	3.4		$	5.5
Interest cost		4.2			4.1			12.6			12.2
Expected return on plan assets		(2.9	)		(3.0	)		(9.1	)		(8.9	)
Amortization, net		(6.4	)		(4.9	)		(19.3	)		(14.8	)
Net other postretirement benefits plan income	$	(4.0	)	$	(2.0	)	$	(12.4	)	$	(6.0	)