Retirement Benefits

3 Months Ended

Dec. 31, 2012

Compensation and Retirement Disclosure [Abstract]

Retirement Benefits

Retirement Benefits

The components of net periodic benefit cost are (in millions):

	Pension Benefits
	Three Months Ended December 31,
	2012			2011
Service cost	$	23.1		$	17.9
Interest cost	40.2			41.9
Expected return on plan assets	(56.8		)	(57.0		)
Amortization:
Prior service credit	(0.6		)	(0.6		)
Net actuarial loss	36.3			23.7
Net periodic benefit cost	$	42.2		$	25.9

	Other  Postretirement Benefits
	Three Months Ended December 31,
	2012			2011
Service cost	$	0.6		$	0.5
Interest cost	1.6			1.8
Amortization:
Prior service credit	(2.7		)	(2.6		)
Net actuarial loss	1.1			0.6
Net periodic benefit cost	$	0.6		$	0.3

In October 2011, we made a voluntary contribution of $300 million to our U.S. qualified pension plan trust.