v3.26.1
Leases (Tables)
 3 Months Ended
Mar. 31, 2026
Leases [Abstract]  
Summary of components of lease expense
The components of lease expense are as follows:
Three Months Ended
March 31,
20262025
(Dollars in millions)
Operating lease cost$5$4
Short-term lease cost1—
Total lease cost$6$4
Summary of supplemental cash flow information related to operating leases
Supplemental cash flow information related to operating leases is as follows:
Three Months Ended
March 31,
20262025
(Dollars in millions)
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash outflows from operating leases
$4 $4 
Right-of-use assets obtained in exchange for lease obligations:
Operating leases5 2 
Summary of supplemental balance sheet information related to operating leases
Supplemental balance sheet information related to operating leases is as follows:
March 31,
2026		December 31,
2025
(Dollars in millions)
Other assets$50 $49 
Accrued liabilities13 13 
Other liabilities39 38 
 March 31,
2026		December 31, 2025
Weighted-average remaining lease term (in years)6.296.43
Weighted-average discount rate6.03 %6.25 %
Schedule of maturities of operating lease liabilities
Maturities of operating lease liabilities as of March 31, 2026 were as follows:
(Dollars in millions)
2026$13 
202714 
202810 
20296 
20304 
Thereafter16 
Total lease payments63 
Less imputed interest(11)
$52