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Leases (Tables)
 9 Months Ended
Sep. 30, 2024
Leases [Abstract]  
Lease cost and other information
The components of lease expense were as follows:
Three Months EndedThree Months EndedNine Months EndedNine Months Ended
(DOLLARS IN MILLIONS)September 30, 2024September 30, 2023September 30, 2024September 30, 2023
Operating leases
Operating lease cost$31 $32 $95 $105 
Variable lease cost14 10 42 42 
Total operating lease cost$45 $42 $137 $147 
Finance leases
Finance lease cost$3 $3 $9 $7 
Supplemental cash flow information related to leases was as follows:
Nine Months EndedNine Months Ended
(DOLLARS IN MILLIONS)September 30, 2024September 30, 2023
Cash paid for amounts included in the measurement of lease liabilities
Operating cash flows for operating leases$90 $94 
Operating cash flows for finance leases1 1 
Financing cash flows for finance leases7 6 
Right-of-use assets obtained in exchange for lease obligations
Operating leases44 73 
Finance leases12 17