Supplemental Disclosure of Cash Flow Information (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2010 Predecessor
Supplemental Disclosure of Cash Flow Information
Cash interest paid	$ 139,768	$ 129,194	$ 27,695
Cash income taxes paid (net of refunds of $30,984 for Fiscal 2011)	73,638	29,688	122,022
Acquisitions accounted for under the purchase method:
Fair value of assets acquired		5,111,188	15,563
Liabilities assumed		(1,123,379)	(676)
Less: Cash acquired			(687)
Net cash paid		3,987,809	14,200
Property, plant and equipment additions included in accounts payable	$ 11,986	$ 5,524	$ 2,034