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Leases (Tables)
 12 Months Ended
Dec. 31, 2021
Leases [Abstract]  
Schedule of Supplemental Balance Sheet Information
Supplemental balance sheet information related to leases is as follows:
(Millions of dollars)December 31, 2021December 31, 2020
Operating Leases
Operating lease right-of-use assets$853 $935 
Other current liabilities215 237 
Other long-term liabilities618 669 
Total operating lease liabilities833 906 
Finance Leases
Finance lease right-of-use assets163 155 
Other current liabilities47 38 
Other long-term liabilities129 125 
Total finance lease liabilities$176 $163 
Schedule of Supplemental Operating Lease Information
Supplemental operating lease information:
December 31, 2021December 31, 2020
Weighted average lease term (years)99
Weighted average discount rate2.91 %2.83 %
Schedule of Future Operating Lease Payments
Future operating and finance lease payments as of December 31, 2021 are as follows (millions of dollars):
PeriodOperating LeasesFinancing Leases
2022$227 $54 
2023162 40 
2024116 29 
202584 20 
202661 11 
Thereafter281 67 
Total future undiscounted lease payments931 221 
Less imputed interest(98)(45)
Total reported lease liability$833 $176 
Schedule of Future Financing Lease Payments
Future operating and finance lease payments as of December 31, 2021 are as follows (millions of dollars):
PeriodOperating LeasesFinancing Leases
2022$227 $54 
2023162 40 
2024116 29 
202584 20 
202661 11 
Thereafter281 67 
Total future undiscounted lease payments931 221 
Less imputed interest(98)(45)
Total reported lease liability$833 $176