Annual report pursuant to Section 13 and 15(d)

LEASES LEASES (Details)

v3.20.4
LEASES LEASES (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Lessee, Lease, Description [Line Items]    
Operating Lease, Right-of-Use Asset $ 1,548 $ 1,372
Operating Lease, Liability 1,622 1,392
Operating Lease, Cost 353 327
Operating Lease, Payments 365 339
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability $ 528 308
Operating Lease, Weighted Average Remaining Lease Term 9 years  
Operating Lease, Weighted Average Discount Rate, Percent 3.00%  
Lessee, Operating Lease, Term of Contract, Low End of Range 1 year  
Lessee, Operating Lease, Term of Contract, High End of Range 44 years  
Lessee, Operating Lease, Liability, Payments, Due Year One $ 340  
Lessee, Operating Lease, Liability, Payments, Due Year Two 299  
Lessee, Operating Lease, Liability, Payments, Due Year Three 252  
Lessee, Operating Lease, Liability, Payments, Due Year Four 207  
Lessee, Operating Lease, Liability, Payments, Due Year Five 170  
Lessee, Operating Lease, Liability, Payments, Due after Year Five 565  
Lessee, Operating Lease, Liability, Payments, Due 1,833  
Lessee, Operating Lease, Liability, Undiscounted Excess Amount 211  
Other liabilities    
Lessee, Lease, Description [Line Items]    
Operating Lease, Liability, Noncurrent 1,300 1,111
Accounts Payable and Accrued Liabilities    
Lessee, Lease, Description [Line Items]    
Operating Lease, Liability, Current $ 322 $ 281