CONSOLIDATED CONDENSED STATEMENTS OF COMPREHENSIVE INCOME (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
CONSOLIDATED CONDENSED STATEMENTS OF COMPREHENSIVE INCOME
Net income	$ 159,603	$ 144,286
Other comprehensive income, net of income taxes:
Unrealized appreciation on securities, net of income taxes of $0.1 million at December 31, 2012 and $19.4 million at December 31, 2011	(134)	32,338
Minimum pension liability adjustments, net of income taxes of $0.2 million at December 31, 2012 and $0.3 million at December 31, 2011	433	539
Other comprehensive income	299	32,877
Comprehensive income	$ 159,902	$ 177,163