Consolidated Statements of Comprehensive Income (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2011
Consolidated Statements of Comprehensive Income
Net income	$ 736,639	$ 581,045	$ 434,186
Other comprehensive income, net of income taxes:
Unrealized appreciation on securities, net of income taxes of $34.2 million at September 30, 2013, $37.2 million at September 30, 2012 and $11.0 million at September 30, 2011	46,853	63,725	18,414
Reclassification of realized gains in net income, net of income taxes of ($60.8) million at September 30, 2013	(92,543)
Minimum pension liability adjustments, net of income taxes of $6.6 million at September 30, 2013, $2.4 million at September 30, 2012 and ($2.2) million at September 30, 2011	11,413	4,174	(3,613)
Other comprehensive income (loss)	(34,277)	67,899	14,801
Comprehensive income	$ 702,362	$ 648,944	$ 448,987