CONSOLIDATED INCOME STATEMENTS (Unaudited) - USD ($) shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Income Statement
Revenues	$ 3,102	$ 2,933	$ 5,978	$ 5,802
Expense
Labor and Fringe	669	751	1,365	1,546
Materials, Supplies and Other	469	496	951	1,067
Depreciation	329	327	652	647
Fuel	270	198	525	416
Equipment and Other Rents	112	105	213	204
Restructuring Charge (Note 1)	0	115	0	225
Equity Earnings of Affiliates	(30)	(16)	(55)	(29)
Total Expense	1,819	1,976	3,651	4,076
Operating Income	1,283	957	2,327	1,726
Interest Expense	(157)	(137)	(306)	(274)
Restructuring Charge - Non-Operating (Note 1)	0	(7)	0	(70)
Other Income - Net	18	14	35	27
Earnings Before Income Taxes	1,144	827	2,056	1,409
Income Tax Expense	(267)	(317)	(484)	(537)
Net Earnings	$ 877	$ 510	$ 1,572	$ 872
Per Common Share
Net Earnings Per Share, Basic (in dollars per share)	$ 1.02	$ 0.55	$ 1.80	$ 0.94
Net Earnings Per Share, Assuming Dilution (in dollars per share)	$ 1.01	$ 0.55	$ 1.79	$ 0.94
Average Shares Outstanding (in shares)	864	920	875	923
Average Shares Outstanding, Assuming Dilution (in shares)	868	924	878	926
Cash Dividends Paid Per Common Share (in dollars per share)	$ 0.22	$ 0.20	$ 0.44	$ 0.38