Unaudited Quarterly Financial Information (Notes)

12 Months Ended

Dec. 31, 2020

Quarterly Financial Information Disclosure [Abstract]

Unaudited Quarterly Financial Information

(In Thousands, Except Per Share Data)


Quarter Ended	Mar 31		Jun 30		Sep 30		Dec 31
2020
Operating Revenues and Other	$	4,717,692	$	1,103,374	$	2,245,484	$	2,965,498
Operating Income (Loss)	$	57,585	$	(1,086,549)	$	(2,714)	$	487,662
Income (Loss) Before Income Taxes	$	31,003	$	(1,145,262)	$	(52,555)	$	427,760
Income Tax Provision (Benefit)	21,190		(235,878)		(10,088)		90,294
Net Income (Loss)	$	9,813	$	(909,384)	$	(42,467)	$	337,466
Net Income (Loss) Per Share (1)
Basic	$	0.02	$	(1.57)	$	(0.07)	$	0.58
Diluted	$	0.02	$	(1.57)	$	(0.07)	$	0.58
Average Number of Common Shares
Basic	578,462		578,719		579,055		579,624
Diluted	580,283		578,719		579,055		580,885
2019
Operating Revenues and Other	$	4,058,642	$	4,697,630	$	4,303,455	$	4,320,246
Operating Income	$	876,530	$	1,130,771	$	827,959	$	863,751
Income Before Income Taxes	$	827,236	$	1,089,366	$	797,457	$	831,208
Income Tax Provision	191,810		241,525		182,335		194,687
Net Income	$	635,426	$	847,841	$	615,122	$	636,521
Net Income Per Share (1)
Basic	$	1.10	$	1.47	$	1.06	$	1.10
Diluted	$	1.10	$	1.46	$	1.06	$	1.10
Average Number of Common Shares
Basic	577,207		577,460		577,839		578,219
Diluted	580,222		580,247		581,271		580,849

(1)The sum of quarterly net income (loss) per share may not agree with total year net income (loss) per share as each quarterly computation is based on the weighted average of common shares outstanding.