Quarterly report pursuant to Section 13 or 15(d)

RECENT ACCOUNTING PRONOUNCEMENTS - Income Statement Impact (Details)

v3.10.0.1
RECENT ACCOUNTING PRONOUNCEMENTS - Income Statement Impact (Details) - USD ($)
$ / shares in Units, $ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2018
Jun. 30, 2017
Jun. 30, 2018
Jun. 30, 2017
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]        
Revenue $ 17,456 $ 15,927 $ 34,569 $ 31,437
Operating Expenses:        
Compensation and benefits 9,024 8,284 18,069 16,595
Repairs and maintenance 423 392 857 782
Depreciation and amortization 542 562 1,138 1,116
Purchased transportation 3,209 2,614 6,354 5,159
Fuel 852 616 1,602 1,237
Other occupancy 321 264 682 563
Other expenses 1,312 1,158 2,574 2,331
Operating expenses 15,683 13,890 31,276 27,783
Operating Profit 1,773 2,037 3,293 3,654
Other Income and (Expense):        
Investment income and other 302 193 596 388
Interest expense (149) (111) (302) (213)
Total Other Income and (Expense) 153 82 294 175
Income Before Income Taxes 1,926 2,119 3,587 3,829
Income Tax Expense 441 735 757 1,279
Net Income $ 1,485 $ 1,384 $ 2,830 $ 2,550
Basic Earnings Per Share $ 1.71 $ 1.59 $ 3.27 $ 2.92
Diluted Earnings Per Share $ 1.71 $ 1.58 $ 3.25 $ 2.91
Previously Reported        
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]        
Revenue   $ 15,750   $ 31,065
Operating Expenses:        
Compensation and benefits   8,105   16,236
Repairs and maintenance   392   782
Depreciation and amortization   562   1,116
Purchased transportation   2,443   4,809
Fuel   616   1,237
Other occupancy   264   563
Other expenses   1,152   2,322
Operating expenses   13,534   27,065
Operating Profit   2,216   4,000
Other Income and (Expense):        
Investment income and other   14   29
Interest expense   (111)   (213)
Total Other Income and (Expense)   (97)   (184)
Income Before Income Taxes   2,119   3,816
Income Tax Expense   735   1,274
Net Income   $ 1,384   $ 2,542
Basic Earnings Per Share   $ 1.59   $ 2.91
Diluted Earnings Per Share   $ 1.58   $ 2.90
Restatement | ASU 2014-09        
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]        
Revenue   $ 177   $ 372
Operating Expenses:        
Compensation and benefits   0   0
Repairs and maintenance   0   0
Depreciation and amortization   0   0
Purchased transportation   171   350
Fuel   0   0
Other occupancy   0   0
Other expenses   6   9
Operating expenses   177   359
Operating Profit   0   13
Other Income and (Expense):        
Investment income and other   0   0
Interest expense   0   0
Total Other Income and (Expense)   0   0
Income Before Income Taxes   0   13
Income Tax Expense   0   5
Net Income   $ 0   $ 8
Basic Earnings Per Share   $ 0.00   $ 0.01
Diluted Earnings Per Share   $ 0.00   $ 0.01
Restatement | ASU 2017-07        
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]        
Revenue   $ 0   $ 0
Operating Expenses:        
Compensation and benefits   179   359
Repairs and maintenance   0   0
Depreciation and amortization   0   0
Purchased transportation   0   0
Fuel   0   0
Other occupancy   0   0
Other expenses   0   0
Operating expenses   179   359
Operating Profit   (179)   (359)
Other Income and (Expense):        
Investment income and other   179   359
Interest expense   0   0
Total Other Income and (Expense)   179   359
Income Before Income Taxes   0   0
Income Tax Expense   0   0
Net Income   $ 0   $ 0
Basic Earnings Per Share   $ 0.00   $ 0.00
Diluted Earnings Per Share   $ 0.00   $ 0.00