v3.25.3
Leases (Tables)
 9 Months Ended
Sep. 30, 2025
Leases [Abstract]  
Summary of components of lease expense
The components of lease expense are as follows:
Three Months Ended
September 30,
Nine Months Ended
September 30,
2025202420252024
(Dollars in millions)
Operating lease cost$4$4$13$11
Short-term lease cost——1—
Total lease cost$4$4$14$11
Summary of supplemental cash flow information related to operating leases
Supplemental cash flow information related to operating leases is as follows:
Three Months Ended
September 30,
Nine Months Ended
September 30,
2025202420252024
(Dollars in millions)
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash outflows from operating leases
$4 $4 $12 $10 
Right-of-use assets obtained in exchange for lease obligations:
Operating leases— 1 4 10 
Summary of supplemental balance sheet information related to operating leases
Supplemental balance sheet information related to operating leases is as follows:
September 30,
2025		December 31,
2024
(Dollars in millions)
Other assets$51 $52 
Accrued liabilities13 11 
Other liabilities40 42 
 September 30,
2025		December 31, 2024
Weighted-average remaining lease term (in years)6.596.89
Weighted-average discount rate6.44 %6.71 %
Schedule of maturities of operating lease liabilities
Maturities of operating lease liabilities as of September 30, 2025 were as follows:
(Dollars in millions)
2025$4 
202615 
202712 
20288 
20295 
Thereafter19 
Total lease payments63 
Less imputed interest(10)
$53