Consolidated Statements of Comprehensive Income (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2012
Consolidated Statements of Comprehensive Income
Net income	$ 708,719	$ 736,639	$ 581,045
Other comprehensive income (loss)
Unrealized appreciation (depreciation) on securities, net of income taxes of ($15.5) million at September 30, 2014, $34.2 million at September 30, 2013 and $37.2 million at September 30, 2012	(19,006)	46,853	63,725
Reclassification of realized gains in net income, net of income taxes of ($17.5) million at September 30, 2014 and ($60.8) million at September 30, 2013	(27,737)	(92,543)
Minimum pension liability adjustments, net of income taxes of ($1.5) million at September 30, 2014, $6.6 million at September 30, 2013 and $2.4 million at September 30, 2012	(2,661)	11,413	4,174
Other comprehensive income (loss)	(49,404)	(34,277)	67,899
Comprehensive income	$ 659,315	$ 702,362	$ 648,944