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	107,598,889	107,599,000				1,901,000
Comprehensive Income:
Net income	159,603			159,603			159,603
Other comprehensive income:
Change in value on available-for-sale securities, net of income taxes	(134)				(134)		(134)
Amortization of net periodic benefit costs-net of actuarial gain, net of income taxes	433				433		433
Comprehensive income	159,902						159,902
Cash dividends ($0.15 per share)	(16,026)			(16,026)
Exercise of stock options	473	58	8,950			(8,535)
Exercise of stock options (in shares)		581,000				162,000
Tax benefit of stock-based awards, including excess tax benefits of $6.3 million	6,697		6,697
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	6,028		6,028
Balance at Dec. 31, 2012	$ 3,990,395	$ 10,826	$ 254,689	$ 3,648,872	$ 167,106	$ (91,098)
Balance (in shares) at Dec. 31, 2012	108,262,523	108,263,000				2,022,000