Quarterly Financial Data (Tables)

12 Months Ended

Sep. 30, 2019

Quarterly Financial Information Disclosure [Abstract]

Schedule Of Quarterly Financial Information

Quarter Ended	Operating Revenues		Operating Income		Net Income Available for Common Stock			Earnings per Common Share
								Basic		Diluted
	(Thousands, except per common share amounts)
2019
9/30/2019	$	293,341	$	83,940	$	47,282		$	0.55	$	0.54
6/30/2019	$	357,200	$	112,827	$	63,753		$	0.74	$	0.73
3/31/2019	$	552,544	$	153,359	$	90,595		$	1.05	$	1.04
12/31/2018	$	490,247	$	161,683	$	102,660	(1)	$	1.19	$	1.18
2018
9/30/2018	$	289,196	$	84,662	$	37,995	(2)	$	0.44	$	0.44
6/30/2018	$	342,912	$	114,003	$	63,025		$	0.73	$	0.73
3/31/2018	$	540,905	$	171,589	$	91,847	(3)	$	1.07	$	1.06
12/31/2017	$	419,655	$	149,469	$	198,654	(4)	$	2.32	$	2.30

(1) Includes a $5.0 million reduction to income tax expense associated with the remeasurement of accumulated

deferred income taxes in accordance with the 2017 Tax Reform Act.

(2) Includes a $3.5 million increase to income tax expense associated with the remeasurement of accumulated

deferred income taxes in accordance with the 2017 Tax Reform Act.

(3) Includes a $4.0 million increase to income tax expense associated with the remeasurement of accumulated

deferred income taxes in accordance with the 2017 Tax Reform Act.

(4) Includes a $111.0 million reduction to income tax expense associated with the remeasurement of accumulated

deferred income taxes in accordance with the 2017 Tax Reform Act.