Income Taxes (Details 3) (USD $) In Thousands	Sep. 30, 2011	Sep. 30, 2010
Deferred income taxes
Compensation and benefits, Assets	$ 590,311	$ 484,767
Property and equipment, Liabilities	433,163	318,640
Loss and credit carryforwards, assets	85,731	116,478
Deferred Tax Assets, Other	360,893	293,246
Deferred Tax Liabilities, Other	218,571	173,372
Deferred Tax Assets, Gross	1,036,935	894,491
Deferred Tax Liabilities, Gross	651,734	492,012
Valuation allowance, Assets	(52,347)	(56,425)
Total, Assets	984,588	838,066
Total, Liabilities	$ 651,734	$ 492,012