CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Jun. 30, 2013	Jun. 30, 2012
Cash Flows From Operating Activities
Net income (loss)	$ 235,658	$ 208,750
Adjustments to reconcile net income to net cash provided by operating activities:
Gain on sale of discontinued operations	(8,203)	0
Depreciation and amortization:
Charged to depreciation and amortization	176,737	183,884
Charged to other accounts	446	310
Other
Deferred income taxes	130,365	120,713
Other	14,460	22,386
Net Assets Liabilities From Risk Management Activities	(6,386)	12,759
Net change in operating assets and liabilities	(33,502)	(29,996)
Net cash provided by operating activities	509,575	518,806
Cash Flows From Investing Activities
Capital expenditures	(582,473)	(497,374)
Proceeds from sale of discontinued operations	153,023	0
Other, net	(3,139)	(4,247)
Net cash used in investing activities	(432,589)	(501,621)
Cash Flows From Financing Activities
Net decrease in short-term debt	(435,084)	(6,688)
Net proceeds from issuance of long-term debt	493,793	0
Settlement of Treasury lock agreement	(66,626)	0
Repayment of long-term debt	(131)	(2,369)
Cash dividends paid	(96,060)	(94,338)
Repurchase of common stock	0	(12,535)
Repurchase of equity awards	(5,146)	(5,219)
Issuance of common stock	8	251
Net cash used in fnancing activities	(109,246)	(120,898)
Net decrease in cash and cash equivalents	(32,260)	(103,713)
Cash and cash equivalents at beginning of period	64,239	131,419
Cash and cash equivalents at end of period	$ 31,979	$ 27,706