Quarterly Financial Data (Tables)

12 Months Ended

Sep. 30, 2015

Quarterly Financial Information Disclosure [Abstract]

Schedule Of Quarterly Financial Information

Quarter Ended	Operating Revenues		Operating Income (Loss)			Net  Income(Loss) Available for Common Stock				Earnings (Loss) per Common Share
										Basic			Diluted
	(Thousands, except per common share amounts)
2015
9/30/2015	$	301,062	$	(326,731	)	$	(187,703	)	(1)	$	(2.22	)	$	(2.22	)
6/30/2015	$	339,815	$	(489,214	)	$	(293,134	)	(2)	$	(3.47	)	$	(3.44	)
3/31/2015	$	596,127	$	44,331		$	16,669		(3)	$	0.20		$	0.20
12/31/2014	$	523,909	$	160,561		$	84,741			$	1.01		$	1.00
2014
9/30/2014	$	366,623	$	102,004		$	57,431			$	0.68		$	0.68
6/30/2014	$	440,144	$	127,013		$	64,520			$	0.77		$	0.76
3/31/2014	$	756,242	$	180,075		$	95,210		(4)	$	1.14		$	1.12
12/31/2013	$	550,072	$	160,581		$	82,252			$	0.98		$	0.97

(1) Includes a non-cash $417.2 million impairment charge ($240.9 million after tax) associated with the Exploration and Production segment's oil and gas producing properties and a $8.0 million reversal of stock-based compensation expense ($5.2 million after tax) related to performance based restricted stock units.

(2) Includes a non-cash $588.7 million impairment charge ($339.8 million after tax) associated with the Exploration and Production segment's oil and gas producing properties.

(3) Includes a non-cash $120.3 million impairment charge ($69.5 million after tax) associated with the Exploration and Production segment's oil and gas producing properties.

(4) Includes $3.6 million of income associated with a death benefit gain on life insurance proceeds recorded in the Corporate category.