Annual report pursuant to Section 13 and 15(d)

LEASE OBLIGATIONS - Future Minimum Lease Payments (Details)

v3.20.4
LEASE OBLIGATIONS - Future Minimum Lease Payments (Details)
$ in Millions
Dec. 31, 2020
USD ($)
Leases [Abstract]  
Finance Lease, Liability, Payments, Due in Next Rolling Twelve Months $ 100
Lessee, Operating Lease, Liability, Payments, Due Next Rolling Twelve Months 70
Finance Lease, Liability, Payments, Due in Rolling Year Two 95
Lessee, Operating Lease, Liability, Payments, Due in Rolling Year Two 53
Finance Lease, Liability, Payments, Due in Rolling Year Three 78
Lessee, Operating Lease, Liability, Payments, Due in Rolling Year Three 46
Finance Lease, Liability, Payments, Due in Rolling Year Four 23
Lessee, Operating Lease, Liability, Payments, Due in Rolling Year Four 38
Finance Lease, Liability, Payments, Due in Rolling Year Five 22
Lessee, Operating Lease, Liability, Payments, Due in Rolling Year Five 34
Finance Lease, Liability, Payments, Due in Rolling after Year Five 76
Lessee, Operating Lease, Liability, Payments, Due after Rolling Year Five 122
Finance Lease, Liability, Payment, Due 394
Lessee, Operating Lease, Liability, to be Paid 363
Finance Lease, Liability, Undiscounted Excess Amount 59
Lessee, Operating Lease, Liability, Undiscounted Excess Amount 99
Finance Lease, Liability $ 335
Finance Lease, Liability, Statement of Financial Position [Extensible List] us-gaap:OtherLiabilities
Operating Lease, Liability $ 264
Operating Lease, Liability, Statement of Financial Position [Extensible List] us-gaap:OtherLiabilities
Finance Lease, Liability, Current $ 91
Finance Lease, Liability, Noncurrent $ 244
Operating Lease, Liability, Current, Statement of Financial Position [Extensible List] us-gaap:OtherLiabilitiesCurrent
Finance Lease, Liability, Current, Statement of Financial Position [Extensible List] us-gaap:OtherLiabilitiesCurrent
Operating Lease, Liability, Current $ 53
Operating Lease, Liability, Noncurrent $ 211
Finance Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List] us-gaap:OtherLiabilitiesNoncurrent
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List] us-gaap:OtherLiabilitiesNoncurrent