CONSOLIDATED CONDENSED STATEMENT OF SHAREHOLDERS' EQUITY (USD $) In Thousands, except Share data, unless otherwise specified	Total	Common Stock	Additional Paid-In Capital	Retained Earnings	Accumulated Other Comprehensive Income	Treasury Stock	Comprehensive Income
Balance at Sep. 30, 2012	$ 3,834,998	$ 10,760	$ 236,240	$ 3,505,295	$ 166,807	$ (84,104)
Balance (in shares) at Sep. 30, 2012						1,901,000
Balance (in shares) at Sep. 30, 2012	107,598,889	107,599,000
Comprehensive Income:
Net income	310,683			310,683			310,683
Other comprehensive income:
Change in value on available-for-sale securities, net of income taxes	37,382				37,382		37,382
Amortization of net periodic benefit costs-net of actuarial gain, net of income taxes	865				865		865
Comprehensive income	348,930						348,930
Cash dividends ($0.30 per share)	(32,088)			(32,088)
Exercise of stock options	4,906	75	13,366			(8,535)
Exercise of stock options (in shares)		744,000				162,000
Tax benefit of stock-based awards, including excess tax benefits of $10.2 million	7,837		7,837
Stock issued for vested restricted stock, net of shares withheld for employee taxes	(1,677)	8	(3,226)			1,541
Stock issued for vested restricted stock, net of shares withheld for employee taxes (in shares)		83,000				(41,000)
Stock-based compensation	11,726		11,726
Balance at Mar. 31, 2013	$ 4,174,632	$ 10,843	$ 265,943	$ 3,783,890	$ 205,054	$ (91,098)
Balance (in shares) at Mar. 31, 2013						2,022,000
Balance (in shares) at Mar. 31, 2013	108,425,884	108,426,000