CONSOLIDATED INCOME STATEMENTS (Unaudited) - USD ($) shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Income Statement
Revenue	$ 2,813	$ 2,855
Expense
Labor and Fringe	620	606
Materials, Supplies and Other	469	454
Depreciation	345	344
Fuel	190	192
Equipment and Other Rents	88	81
Total Expense	1,712	1,677
Operating Income	1,101	1,178
Interest Expense	(184)	(187)
Other Income - Net	20	22
Earnings Before Income Taxes	937	1,013
Income Tax Expense	(231)	(243)
Net Earnings	$ 706	$ 770
Per Common Share
Net Earnings Per Share, Basic (in dollars per share)	$ 0.93	$ 1.00
Net Earnings Per Share, Assuming Dilution (in dollars per share)	$ 0.93	$ 1.00
Average Shares Outstanding (in shares)	761	772
Average Shares Outstanding, Assuming Dilution (in shares)	762	773