Retirement Benefits (Tables)

6 Months Ended

Jun. 30, 2014

Defined Benefit Pension Plans and Defined Benefit Postretirement Plans Disclosure [Abstract]

Components of Net Periodic Benefit Costs

The components of net periodic (credit) benefit cost included in the consolidated statements of income for the three months ended June 30, 2014 and 2013 are as follows:

	Pension Benefits						Other Benefits
	2014			2013			2014			2013
Service cost	$	3.2		$	3.7		$	0.8		$	1.7
Interest cost	18.5			16.7			6.5			5.6
Expected return on assets	(34.3		)	(33.3		)	(5.9		)	(5.5		)
Recognized actuarial loss	5.2			8.5			2.4			2.8
Settlement loss	1.4			3.7			—			—
Amortization of prior service credit	(0.2		)	(0.2		)	(3.6		)	(3.4		)
Net periodic (credit) benefit cost	$	(6.2	)	$	(0.9	)	$	0.2		$	1.2

The components of net periodic (credit) benefit cost included in the consolidated statements of income for the six months ended June 30, 2014 and 2013 are as follows:

	Pension Benefits						Other Benefits
	2014			2013			2014			2013
Service cost	$	6.5		$	7.3		$	1.6		$	3.4
Interest cost	37.0			33.4			13.1			11.2
Expected return on assets	(68.7		)	(66.6		)	(11.7		)	(11.0		)
Recognized actuarial loss	10.5			17.1			4.7			5.6
Settlement loss	2.5			7.1			—			—
Amortization of prior service credit	(0.4		)	(0.4		)	(7.2		)	(6.7		)
Net periodic (credit) benefit cost	$	(12.6	)	$	(2.1	)	$	0.5		$	2.5