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STATEMENTS OF CONSOLIDATED INCOME - USD ($) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2018 | Sep. 30, 2018 | Jun. 30, 2018 | Mar. 31, 2018 | Dec. 31, 2017 | Sep. 30, 2017 | Jun. 30, 2017 | Mar. 31, 2017 | Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Revenue | $ 19,848 | $ 17,444 | $ 17,456 | $ 17,113 | $ 18,975 | $ 16,173 | $ 15,927 | $ 15,510 | $ 71,861 | $ 66,585 | $ 61,610
Operating Expenses: |  |  |  |  |  |  |  |  |  |  |
Compensation and benefits |  |  |  |  |  |  |  |  | 37,235 | 34,577 | 32,534
Depreciation and amortization |  |  |  |  |  |  |  |  | 2,207 | 2,282 | 2,224
Fuel |  |  |  |  |  |  |  |  | 3,427 | 2,690 | 2,118
Other occupancy |  |  |  |  |  |  |  |  | 1,362 | 1,155 | 1,037
Other expenses |  |  |  |  |  |  |  |  | 5,465 | 5,055 | 4,619
Total Operating Expenses |  |  |  |  |  |  |  |  | 64,837 | 59,056 | 53,922
Operating Profit | 2,004 | 1,727 | 1,773 | 1,520 | 2,063 | 1,812 | 2,037 | 1,617 | 7,024 | 7,529 | 7,688
Other Income and (Expense): |  |  |  |  |  |  |  |  |  |  |
Investment income and other |  |  |  |  |  |  |  |  | (400) | 61 | (2,186)
Interest expense |  |  |  |  |  |  |  |  | (605) | (453) | (381)
Total Other Income and (Expense) | (1,461) | 162 | 153 | 141 | (692) | 125 | 82 | 93 | (1,005) | (392) | (2,567)
Income Before Income Taxes |  |  |  |  |  |  |  |  | 6,019 | 7,137 | 5,121
Income Tax Expense |  |  |  |  |  |  |  |  | 1,228 | 2,232 | 1,699
Net Income | $ 453 | $ 1,508 | $ 1,485 | $ 1,345 | $ 1,096 | $ 1,259 | $ 1,384 | $ 1,166 | $ 4,791 | $ 4,905 | $ 3,422
Basic Earnings Per Share (in dollars per share) | $ 0.52 | $ 1.74 | $ 1.71 | $ 1.55 | $ 1.26 | $ 1.45 | $ 1.59 | $ 1.33 | $ 5.53 | $ 5.63 | $ 3.88
Diluted Earnings Per Share (in dollars per share) | $ 0.52 | $ 1.73 | $ 1.71 | $ 1.55 | $ 1.26 | $ 1.44 | $ 1.58 | $ 1.33 | $ 5.51 | $ 5.61 | $ 3.86
Repairs and maintenance |  |  |  |  |  |  |  |  |  |  |
Operating Expenses: |  |  |  |  |  |  |  |  |  |  |
Repairs and maintenance |  |  |  |  |  |  |  |  | $ 1,732 | $ 1,601 | $ 1,542
Purchased transportation |  |  |  |  |  |  |  |  |  |  |
Operating Expenses: |  |  |  |  |  |  |  |  |  |  |
Repairs and maintenance |  |  |  |  |  |  |  |  | $ 13,409 | $ 11,696 | $ 9,848

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