Including current and noncurrent portions, aggregate carrying amount of long-term borrowings as of the balance sheet date before deducting unamortized discount or premiums (if any). May include notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt, which had initial maturities beyond one year or beyond the normal operating cycle, if longer.

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The amount of debt discount that was originally recognized at the issuance of the instrument that has yet to be amortized.

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- Definition

Carrying amount of long-term debt, net of unamortized discount or premium, including current and noncurrent amounts. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Borrowings - Schedule of Long-term Debt (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Sep. 30, 2012	Jun. 30, 2013 Senior Notes	Sep. 30, 2012 Senior Notes	Jul. 17, 2012 Senior Notes Tangible Equity Units	May 31, 2010 Senior Notes Tangible Equity Units	Jun. 30, 2013 Senior Notes 6 7/8% Senior Notes Maturing July 2015	Sep. 30, 2012 Senior Notes 6 7/8% Senior Notes Maturing July 2015	Jun. 30, 2013 Senior Notes 8 1/8% Senior Notes Maturing June 2016	Sep. 30, 2012 Senior Notes 8 1/8% Senior Notes Maturing June 2016	Jun. 30, 2013 Senior Notes 6 5/8% Senior Secured Notes	Sep. 30, 2012 Senior Notes 6 5/8% Senior Secured Notes	Jun. 30, 2013 Senior Notes 9 1/8% Senior Notes Maturing June 2018	Sep. 30, 2012 Senior Notes 9 1/8% Senior Notes Maturing June 2018	Jun. 30, 2013 Senior Notes 9 1/8% Senior Notes Maturing May 2019	Sep. 30, 2012 Senior Notes 9 1/8% Senior Notes Maturing May 2019	Jun. 30, 2013 Senior Notes TEU Senior Amortizing Notes	Sep. 30, 2012 Senior Notes TEU Senior Amortizing Notes	Jun. 30, 2013 Senior Notes TEU Senior Amortizing Notes	Sep. 30, 2012 Senior Notes TEU Senior Amortizing Notes	Jun. 30, 2013 Senior Notes 7 1/4% Senior Notes Maturing February 2023 [Member]	Feb. 01, 2013 Senior Notes 7 1/4% Senior Notes Maturing February 2023 [Member]	Sep. 30, 2012 Senior Notes 7 1/4% Senior Notes Maturing February 2023 [Member]	Jun. 30, 2013 Convertible Subordinated Debt	Sep. 30, 2012 Convertible Subordinated Debt	Jun. 30, 2013 Junior Subordinated Notes	Sep. 30, 2012 Junior Subordinated Notes	Jun. 30, 2013 Cash Secured Loan	Sep. 30, 2012 Cash Secured Loan	Jun. 30, 2013 Other Secured Notes Payable	Sep. 30, 2012 Other Secured Notes Payable
Debt Instrument [Line Items]
Debt instrument stated interest rate (percent)					7.50%	7.25%	6.875%	6.875%	8.125%	8.125%	6.625%	6.625%	9.125%	9.125%	9.125%	9.125%					7.25%	7.25%	0.00%			7.987%
Senior notes							$ 0	$ 172,454	$ 172,879	$ 172,879	$ 300,000	$ 300,000	$ 298,000	$ 300,000	$ 235,000	$ 235,000	$ 81	$ 316	$ 18,028	$ 23,500	$ 200,000		$ 0
Unamortized debt discounts	(2,341)	(3,082)	(2,341)	(3,082)																						47,600
Long-term debt	$ 1,505,656	$ 1,498,198	$ 1,221,647	$ 1,201,067																				$ 0	$ 9,402	$ 53,153	$ 51,603	$ 222,368	$ 227,368	$ 8,488	$ 8,758