Quarterly report pursuant to Section 13 or 15(d)

LEASES - Lease Cost (Details)

v3.21.2
LEASES - Lease Cost (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2021
Jun. 30, 2020
Leases [Abstract]        
Operating lease costs $ 179 $ 172 $ 354 $ 347
Amortization of assets 23 20 46 38
Interest on lease liabilities 3 5 7 10
Total finance lease costs 26 25 53 48
Variable lease costs 62 55 127 113
Short-term lease costs 251 253 530 456
Total lease costs $ 518 $ 505 $ 1,064 $ 964