Retirement Benefits

9 Months Ended

Jun. 30, 2015

Compensation and Retirement Disclosure [Abstract]

Retirement Benefits

Retirement Benefits

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

	Pension Benefits
	Three Months Ended June 30,						Nine Months Ended June 30,
	2015			2014			2015			2014
Service cost	$	21.3		$	19.7		$	64.5		$	59.0
Interest cost	41.7			43.6			125.6			130.8
Expected return on plan assets	(55.7		)	(54.5		)	(167.6		)	(163.5		)
Amortization:
Prior service credit	(0.7		)	(0.7		)	(2.0		)	(2.1		)
Net actuarial loss	29.6			25.0			89.2			74.8
Net periodic benefit cost	$	36.2		$	33.1		$	109.7		$	99.0

	Other Postretirement Benefits
	Three Months Ended June 30,						Nine Months Ended June 30,
	2015			2014			2015			2014
Service cost	$	0.4		$	0.5		$	1.2		$	1.5
Interest cost	1.0			1.7			3.1			4.9
Amortization:
Prior service credit	(3.7		)	(2.6		)	(11.1		)	(7.8		)
Net actuarial loss	1.2			0.8			3.5			2.4
Net periodic benefit cost	$	(1.1	)	$	0.4		$	(3.3	)	$	1.0