Quarterly report pursuant to Section 13 or 15(d)

LEASES - Supplemental Balance Sheet (Details)

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LEASES - Supplemental Balance Sheet (Details) - USD ($)
Jun. 30, 2021
Dec. 31, 2020
Operating Leases:    
Operating lease right-of-use assets $ 3,568,000,000 $ 3,073,000,000
Current maturities of operating leases 556,000,000 560,000,000
Non-current operating leases 3,038,000,000 2,540,000,000
Total lease obligations 3,594,000,000 3,100,000,000
Finance Leases:    
Finance Lease, Right-of-Use Asset 1,145,000,000 1,225,000,000
Current maturities of long-term debt, commercial paper and finance leases 65,000,000 56,000,000
Long-term debt and finance leases 354,000,000 286,000,000
Total lease obligations $ 419,000,000 $ 342,000,000
Weighted average remaining lease term (in years):    
Operating leases 12 years 1 month 6 days 11 years 2 months 12 days
Finance leases 11 years 9 years 3 months 18 days
Weighted average discount rate:    
Operating leases 1.99% 2.28%
Finance leases 3.82% 4.14%