Goodwill and Intangible Assets (Tables)

6 Months Ended

Mar. 31, 2012

Goodwill and Intangible Assets [Abstract]

Component of company's intangible assets

	March 31,			September 30,			March 31,
	2012			2011			2011
Goodwill (not subject to amortization)	$	2,795.2		$	1,562.2		$	1,588.4
Other intangible assets:
Customer relationships, noncompete agreements and other	$	693.8		$	232.1		$	234.6
Trademarks and tradenames (not subject to amortization)		192.0			47.9			50.8
Gross carrying amount		885.8			280.0			285.4
Accumulated amortization		(152.6	)		(132.2	)		(125.2	)
Net carrying amount	$	733.2		$	147.8		$	160.2