Valuation and Qualifying Accounts (Details) (USD $)	12 Months Ended
	Sep. 30, 2012		Sep. 30, 2011		Sep. 30, 2010
Valuation and Qualifying Account (Textual) [Abstract]
Insurance indemnification receivables associated with its property and casualty liabilities	$ 20,900,000		$ 11,300,000		$ 7,200,000
Allowance for Doubtful Accounts [Member]
Valuation and Qualifying Account
Beginning Balance	36,800,000		34,600,000		38,300,000
Charged (credited) to costs and expenses	26,500,000		20,000,000		27,100,000
Other	(27,200,000)	[1]	(17,800,000)	[1]	(30,800,000)	[1]
Ending Balance	36,100,000		36,800,000		34,600,000
Property and Casualty Liability [Member]
Valuation and Qualifying Account
Beginning Balance	65,300,000	[2]	65,700,000	[2]	72,300,000
Charged (credited) to costs and expenses	31,500,000		22,500,000		15,200,000
Valuation allowances and reserves, deductions on other adjustment	(34,000,000)	[3]	(26,500,000)	[3]	(27,400,000)	[3]
Other Adjustments			3,600,000	[4]	5,600,000	[4]
Other Acquisition	32,500,000
Ending Balance	95,300,000	[2]	65,300,000	[2]	65,700,000	[2]
Environmental, litigation and other [Member]
Valuation and Qualifying Account
Beginning Balance	36,900,000		65,800,000		66,300,000
Charged (credited) to costs and expenses	1,200,000		(5,300,000)		5,400,000
Valuation allowances and reserves, deductions on other adjustment	(5,000,000)	[3]	(25,400,000)	[3]	(4,900,000)	[3]
Other Adjustments	(400,000)	[4]	1,800,000	[4]	(1,000,000)	[4]
Other Acquisition	4,900,000
Ending Balance	37,600,000		36,900,000		65,800,000
Deferred tax assets valuation allowance [Member]
Valuation and Qualifying Account
Beginning Balance	81,900,000		78,400,000		87,800,000
Charged (credited) to costs and expenses	(3,100,000)		3,500,000		(9,400,000)
Other Recoveries	2,800,000		0		0
Ending Balance	$ 81,600,000		$ 81,900,000		$ 78,400,000

[1] Uncollectible accounts written off, net of recoveries.

[2] At September 30, 2012, 2011 and 2010, the Company had insurance indemnification receivables associated with its property and casualty liabilities totaling $20.9, $11.3 and $7.2, respectively.

[3] Payments, net.

[4] Other adjustments.