v3.20.4

Leases (Supplemental Balance Sheet Information Related to Leases) (Details) - USD ($) $ in Millions | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Operating Leases |  |
Operating lease right-of-use assets | $ 24,714 | $ 24,039
Operating Lease, Liability, Current, Statement of Financial Position [Extensible List] | us-gaap:AccountsPayableAndAccruedLiabilitiesCurrent | us-gaap:AccountsPayableAndAccruedLiabilitiesCurrent
Accounts payable and accrued liabilities | $ 3,537 | $ 3,451
Operating lease obligation | 22,202 | 21,804
Total operating lease obligation | 25,739 | 25,255
Finance Leases |  |
Property, plant and equipment, at cost | 3,586 | 3,534
Accumulated depreciation and amortization | (1,361) | (1,296)
Property, plant and equipment, net | $ 2,225 | $ 2,238
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List] | us-gaap:PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization | us-gaap:PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization
Current portion of long-term debt | $ 189 | $ 162
Finance Lease, Liability, Current, Statement of Financial Position [Extensible List] | us-gaap:DebtCurrent | us-gaap:DebtCurrent
Long-term debt | $ 1,847 | $ 1,872
Finance Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List] | us-gaap:LongTermDebtAndCapitalLeaseObligations | us-gaap:LongTermDebtAndCapitalLeaseObligations
Total finance lease obligation | $ 2,036 | $ 2,034
Weighted-Average Remaining Lease Term (years), Operating leases | 8 years 6 months | 8 years 4 months 24 days
Weighted-Average Remaining Lease Term (years), Finance leases | 9 years 10 months 24 days | 10 years 3 months 18 days
Weighted-Average Discount Rate, Operating leases | 4.10% | 4.20%
Weighted-Average Discount Rate, Finance leases | 8.10% | 8.40%

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