Pension and Other Postretirement Benefits (Tables)

3 Months Ended

Mar. 31, 2014

Compensation and Retirement Disclosure [Abstract]

Net periodic pension costs under retirement plans and other post-retirement benefits

Net Periodic Pension and Other Postretirement Benefits ("OPEB") Cost

	For the Three Months Ended
	March 31, 2014									March 30, 2013
	Pension			OPEB			Consolidated			Pension			OPEB			Consolidated
	(In millions)
Net periodic pension and OPEB cost:
Service cost - benefits earned during the year	$	3.3		$	0.7		$	4.0		$	4.0		$	0.9		$	4.9
Interest cost on projected benefit obligation	42.1			1.7			43.8			39.4			1.8			41.2
Expected return on plan assets	(49.1		)	—			(49.1		)	(44.7		)	—			(44.7		)
Amortization of prior service cost (benefit)	0.2			(0.8		)	(0.6		)	0.2			(0.9		)	(0.7		)
Amortization of net actuarial loss (gain)	9.1			(0.2		)	8.9			14.3			(0.1		)	14.2
Less: expected participant contributions	(0.3		)	—			(0.3		)	(0.3		)	—			(0.3		)
Net periodic pension and OPEB cost	$	5.3		$	1.4		$	6.7		$	12.9		$	1.7		$	14.6