Commitments and Contingent Liabilities (Tables)

12 Months Ended

Sep. 30, 2015

Commitments and Contingencies Disclosure [Abstract]

Schedule of Loss Contingencies by Contingency

Obligations and expected recoveries related to environmental remediation costs, conditional asset retirement obligations and other recorded indemnification matters as of September 30, 2015 and 2014 are as follows:

	2015			2014
Environmental remediation costs	$	61.4		$	60.0
Conditional asset retirement obligations	20.2			22.2
Indemnification liabilities	32.6			35.7
Total recorded liabilities	114.2			117.9
Recorded probable expected recoveries	(33.2		)	(40.0		)
Net recorded liabilities	$	81.0		$	77.9

Environmental Remediation Cost Liabilities and Related Expected Recoveries

Environmental remediation cost liabilities and related expected recoveries at September 30, 2015 are as follows (in millions):

	2015
Other current liabilities	$	13.4
Other liabilities	48.0
Total recorded environmental remediation costs(1)	61.4
Receivables	(1.6		)
Other assets	(6.6		)
Total recorded probable expected recoveries	(8.2		)
Net environmental remediation costs	$	53.2

Schedule of Asset Retirement Obligations

Conditional asset retirement obligations and related expected recoveries at September 30, 2015 and 2014 are as follows (in millions):

	2015			2014
Other current liabilities	$	0.4		$	0.3
Other liabilities	19.8			21.9
Total recorded conditional asset retirement obligations	20.2			22.2
Probable expected recoveries recorded in other assets	(0.3		)	(0.3		)
Net conditional asset retirement obligations	$	19.9		$	21.9

Indemnification Liabilities and Expected Recoveries

Indemnification liabilities and related expected recoveries at September 30, 2015 and 2014 are as follows (in millions):

	2015			2014
Other current liabilities	$	3.2		$	2.9
Other liabilities	29.4			32.8
Total recorded indemnification liabilities	32.6			35.7
Receivables	(2.1		)	(2.1		)
Other assets	(22.6		)	(24.6		)
Total recorded probable expected recoveries	(24.7		)	(26.7		)
Net indemnification liabilities	$	7.9		$	9.0

Leases of Lessee Disclosure

Rental expense was $117.0 million in 2015, $121.6 million in 2014 and $119.6 million in 2013. As of September 30, 2015, minimum future rental commitments under operating leases having noncancelable lease terms in excess of one year are payable as follows (in millions):

2016	$	73.6
2017	61.3
2018	50.5
2019	38.9
2020	34.7
Beyond 2020	66.7
Total	$	325.7