Annual report pursuant to Section 13 and 15(d)

REVENUE RECOGNITION (Details)

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REVENUE RECOGNITION (Details) - USD ($)
$ in Millions
 3 Months Ended 12 Months Ended
Dec. 31, 2019
Sep. 30, 2019
Jun. 30, 2019
Mar. 31, 2019
Dec. 31, 2018
Sep. 30, 2018
Jun. 30, 2018
Mar. 31, 2018
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Disaggregation of Revenue                      
Revenue $ 20,568 $ 18,318 $ 18,048 $ 17,160 $ 19,848 $ 17,444 $ 17,456 $ 17,113 $ 74,094 $ 71,861 $ 66,585
U.S. Domestic Package                      
Disaggregation of Revenue                      
Revenue                 58,699 56,115 52,080
International Package                      
Disaggregation of Revenue                      
Revenue                 15,395 15,746 14,505
Next Day Air | U.S. Domestic Package                      
Disaggregation of Revenue                      
Revenue                 8,479 7,618 7,088
Deferred | U.S. Domestic Package                      
Disaggregation of Revenue                      
Revenue                 5,180 4,752 4,422
Ground | U.S. Domestic Package                      
Disaggregation of Revenue                      
Revenue                 32,834 31,223 29,251
Domestic | International Package                      
Disaggregation of Revenue                      
Revenue                 2,836 2,874 2,646
Export | International Package                      
Disaggregation of Revenue                      
Revenue                 10,837 10,973 10,170
Cargo & Other | International Package                      
Disaggregation of Revenue                      
Revenue                 547 595 526
Forwarding                      
Disaggregation of Revenue                      
Revenue                 5,867 6,580 5,674
Logistics                      
Disaggregation of Revenue                      
Revenue                 3,435 3,234 3,017
Freight                      
Disaggregation of Revenue                      
Revenue                 3,265 3,218 3,000
Other                      
Disaggregation of Revenue                      
Revenue                 814 794 791
U.S. Domestic Package                      
Disaggregation of Revenue                      
Revenue                 46,493 43,593 40,761
U.S. Domestic Package | U.S. Domestic Package                      
Disaggregation of Revenue                      
Revenue                 46,493 43,593 40,761
Supply Chain & Freight                      
Disaggregation of Revenue                      
Revenue                 13,381 13,826 12,482
Supply Chain & Freight | Supply Chain & Freight                      
Disaggregation of Revenue                      
Revenue                 13,381 13,826 12,482
International Package                      
Disaggregation of Revenue                      
Revenue                 $ 14,220 $ 14,442 $ 13,342