CONSOLIDATED INCOME STATEMENTS (Unaudited) - USD ($)
shares in Millions, $ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2022
Jun. 30, 2021
Jun. 30, 2022
Jun. 30, 2021
Income Statement        
Revenue $ 3,815 $ 2,990 $ 7,228 $ 5,803
Expense        
Labor and Fringe 684 596 1,376 1,216
Purchased Services and Other [1] 647 441 1,322 913
Fuel 446 194 777 384
Depreciation and Amortization 369 348 729 693
Equipment and Other Rents 95 87 195 175
Gains on Property Dispositions (129) (367) (156) (370)
Total Expense 2,112 1,299 4,243 3,011
Operating Income 1,703 1,691 2,985 2,792
Interest Expense (171) (181) (350) (365)
Other Income - Net 26 20 52 40
Earnings Before Income Taxes 1,558 1,530 2,687 2,467
Income Tax Expense (380) (357) (650) (588)
Net Earnings $ 1,178 $ 1,173 $ 2,037 $ 1,879
Per Common Share        
Net Earnings Per Share, Basic (in dollars per share) $ 0.55 $ 0.52 $ 0.94 $ 0.83
Net Earnings Per Share, Assuming Dilution (in dollars per share) $ 0.54 $ 0.52 $ 0.94 $ 0.82
Average Shares Outstanding (in shares) 2,158 2,270 2,173 2,276
Average Shares Outstanding, Assuming Dilution (in shares) 2,163 2,275 2,178 2,281
[1] Beginning third quarter 2021, the Company changed the name of Materials, Supplies and Other expense to Purchased Services and Other, which better describes the composition of this expense amount. This change in naming convention does not impact previously reported results.