v3.26.1
Lease Accounting (Tables)
 6 Months Ended
Jun. 30, 2026
Leases [Abstract]  
Schedule of Leases Reflected on Balance Sheet
Leases are reflected in the following balance sheet accounts:
(Millions of dollars)ClassificationJune 30,
2026		December 31,
2025
Assets
Operating
(Right-of-use)		Operating lease right-of-use assets, net$539.1 $526.3 
Finance
Property, plant, and equipment, at cost, less accumulated depreciation of $75.8 at June 30, 2026 and $69.0 at December 31, 2025
93.2 100.2 
Total leased assets$632.3 $626.5 
Liabilities
Current
OperatingTrade accounts payable and accrued liabilities$26.9 $25.8 
FinanceCurrent maturities of long-term debt 13.1 13.0 
Noncurrent
OperatingNon-current operating lease liabilities549.4 534.6 
FinanceLong-term debt, including capitalized lease obligations99.1 105.5 
Total lease liabilities$688.5 $678.9 
Schedule of Lease Cost, Cash flow Information, Lease Term and Discount Rate
Lease Cost:Three Months Ended
June 30,		Six Months Ended
June 30,
(Millions of dollars)Classification2026202520262025
Operating lease costStore and other operating expenses$18.3 $16.3 $35.7 $32.0 
Finance lease cost
Amortization of leased assetsDepreciation and amortization 3.7 3.5 7.7 7.1 
Interest on lease liabilitiesInterest expense1.9 1.9 3.9 3.9 
Net lease costs$23.9 $21.7 $47.3 $43.0 

Cash Flow Information:Six Months Ended
June 30,
(Millions of dollars)20262025
Cash paid for amounts included in the measurement of liabilities
   Operating cash flows required by operating leases$31.4 $29.7 
   Operating cash flows required by finance leases$3.9 $3.9 
   Financing cash flows required by finance leases$6.6 $6.0 
Lease Term and Discount Rate:Six Months Ended June 30,
2026
Weighted average remaining lease term (years)
Finance leases10.4
Operating leases14.5
Weighted average discount rate
Finance leases6.9%
Operating leases7.5%
Schedule of Finance Lease Liability Maturity
Maturity of Lease Liabilities at June 30, 2026:
(Millions of dollars)Operating leasesFinance leases
2026$34.5 $10.3 
202770.1 19.7 
202869.0 18.7 
202967.5 16.6 
203065.9 14.1 
After 2030
716.6 83.8 
Total lease payments1,023.6 163.2 
 Less: interest447.3 51.0 
Present value of lease liabilities$576.3 $112.2 
Schedule of Operating Lease Liability Maturity
Maturity of Lease Liabilities at June 30, 2026:
(Millions of dollars)Operating leasesFinance leases
2026$34.5 $10.3 
202770.1 19.7 
202869.0 18.7 
202967.5 16.6 
203065.9 14.1 
After 2030
716.6 83.8 
Total lease payments1,023.6 163.2 
 Less: interest447.3 51.0 
Present value of lease liabilities$576.3 $112.2