Retirement Benefits (Tables)

3 Months Ended

Mar. 31, 2013

Schedule of Net Benefit Costs [Table Text Block]

Net pension and retiree health benefit expense included the following components:

	Defined Benefit Pension Plans						Retiree Health  Benefit Plans
	Three Months Ended						Three Months Ended
	March 31,						March 31,
	2013			2012			2013			2012
Components of net periodic benefit cost:
Service cost	$	69.7		$	63.0		$	15.1		$	16.4
Interest cost	109.4			113.0			23.4			28.5
Expected return on plan assets	(174.9		)	(171.1		)	(32.8		)	(31.8		)
Amortization of prior service cost	2.6			0.9			(6.9		)	(8.8		)
Recognized actuarial loss	96.0			70.9			23.0			23.7
Net periodic benefit cost	$	102.8		$	76.7		$	21.8		$	28.0