QUARTERLY FINANCIAL DATA

12 Months Ended

Dec. 31, 2017

(unaudited)



	Three months ended
(in millions except per share amounts)	March 31		June 30		Sept. 30		Dec. 31
2017
Operating revenues	$	4,883	$	5,744	$	5,271	$	5,274
Operating income	658		1,250		834		773
Income before income taxes	553		1,170		791		737
Net income	351		746		503		1,888		(a)
Net income per share, basic	0.57		1.24		0.84		3.19		(a)
Net income per share, diluted	0.57		1.23		0.84		3.18		(a)

	March 31		June 30		Sept. 30		Dec. 31
2016
Operating revenues	$	4,826	$	5,384	$	5,139	$	5,076
Operating income	944		1,276		695		846
Income before income taxes	816		1,304		618		809
Net income	513		820		388		522
Net income per share, basic	0.80		1.30		0.63		0.85
Net income per share, diluted	0.79		1.28		0.62		0.84

(a) Includes a $1.4 billion reduction in Provision for income taxes related to the Tax Cuts and Jobs Act legislation enacted in December 2017, which resulted in a re-measurement of the Company's deferred tax assets and liabilities at the new federal corporate tax rate of 21 percent. See Note 14 to the Consolidated Financial Statements for further information.