Schedule of Debt Instruments (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Sep. 30, 2012
Debt Instrument [Line Items]
Gross Debt Obligations	$ 3,229,784	$ 1,664,917
Current maturities of long-term debt	40,783	16,414
Original Issuance Premiums (Discounts) on Debt	(3,730)	4,383
Long-term debt, net of current maturities	3,185,271	1,652,886
Senior Notes [Member]
Debt Instrument [Line Items]
Debt Balance	757,457	370,175
Interest Rate	4.60%	5.10%
Secured Debt [Member]
Debt Instrument [Line Items]
Debt Balance	950,000	950,000
Interest Rate	9.50%	9.50%
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Debt Balance	69,500	0
Interest Rate	2.10%	4.30%
Other Debt Obligations [Member]
Debt Instrument [Line Items]
Debt Balance	32,966	18,059
Interest Rate	8.30%	10.90%
Capital Lease Obligations [Member]
Debt Instrument [Line Items]
Debt Balance	29,861	26,683
Interest Rate	6.20%	6.20%
Notes 6.375% due 2020 [Member] | Unsecured Debt [Member]
Debt Instrument [Line Items]
Debt Balance	520,000	0
Interest Rate	6.40%	0.00%
Notes 6.625% due 2022 [Member] | Unsecured Debt [Member]
Debt Instrument [Line Items]
Debt Balance	570,000	0
Interest Rate	6.60%	0.00%
6.75% Notes [Member] | Unsecured Debt [Member]
Debt Instrument [Line Items]
Debt Balance	$ 300,000	$ 300,000
Interest Rate	6.80%	6.80%