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Leases (Tables)
 12 Months Ended
Dec. 31, 2021
Leases [Abstract]  
Supplemental operating lease cash flow information [Table Text Block]
Supplemental cash flow information related to operating leases were as follows:
(dollars in millions)202120202019
Operating cash flows used in the measurement of operating lease liabilities$490 $420 $411 
Operating lease right-of-use assets obtained in exchange for operating lease obligations535 299 123 
Lessee, Operating Lease, Liability, Maturity [Table Text Block]
Future lease payments related to our operating lease liabilities as of December 31, 2021 are as follows:
(dollars in millions)
2022$421 
2023359 
2024295 
2025248 
2026198 
Thereafter839 
Total undiscounted lease payments2,360 
Less imputed interest(292)
Total discounted lease payments$2,068 
Operating lease payments recognized in statement of financial position
Our lease liabilities recognized in our Consolidated Balance Sheet were as follows as of December 31:
(dollars in millions)20212020
Operating lease liabilities, current (included in Other accrued liabilities)$411 $482 
Operating lease liabilities, noncurrent1,657 1,516 
Total operating lease liabilities$2,068 $1,998