Retirement Benefits (Tables)

9 Months Ended

Jun. 30, 2014

Compensation and Retirement Disclosure [Abstract]

Components of net periodic benefit cost

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

	Pension Benefits
	Three Months Ended June 30,						Nine Months Ended June 30,
	2014			2013			2014			2013
Service cost	$	19.7		$	22.9		$	59.0		$	69.0
Interest cost	43.6			40.0			130.8			120.2
Expected return on plan assets	(54.5		)	(56.5		)	(163.5		)	(169.7		)
Amortization:
Prior service credit	(0.7		)	(0.6		)	(2.1		)	(1.9		)
Net actuarial loss	25.0			36.1			74.8			108.5
Net periodic benefit cost	$	33.1		$	41.9		$	99.0		$	126.1

	Other Postretirement Benefits
	Three Months Ended June 30,						Nine Months Ended June 30,
	2014			2013			2014			2013
Service cost	$	0.5		$	0.6		$	1.5		$	1.8
Interest cost	1.7			1.6			4.9			4.7
Amortization:
Prior service credit	(2.6		)	(2.7		)	(7.8		)	(8.1		)
Net actuarial loss	0.8			1.1			2.4			3.3
Net periodic benefit cost	$	0.4		$	0.6		$	1.0		$	1.7