CONSOLIDATED STATEMENTS OF INCOME - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Operating Revenues:
Transportation	$ 1,483.7	$ 1,361.3	$ 1,287.0
Storage, parking and lending	228.2	211.0	160.9
Product sales	515.7	378.7	100.3
Other	78.2	77.1	69.5
Total operating revenues	2,305.8	2,028.1	1,617.7
Operating Costs and Expenses:
Costs associated with service revenues	34.6	29.1	26.3
Costs associated with product sales	441.0	303.5	87.8
Operation and maintenance	321.9	310.3	281.0
Administrative and general	199.6	186.1	171.9
Depreciation and amortization	438.9	424.8	408.7
Loss (gain) on sale of assets, impairments and other	0.2	(5.5)	0.3
Taxes other than income taxes	129.7	122.1	115.5
Total operating costs and expenses	1,565.9	1,370.4	1,091.5
Operating income	739.9	657.7	526.2
Other Deductions (Income):
Interest expense	161.2	182.9	155.6
Interest income	(13.8)	(31.1)	(12.1)
Miscellaneous other income, net	(3.9)	(6.1)	(4.1)
Total other deductions	143.5	145.7	139.4
Income before income taxes	596.4	512.0	386.8
Income taxes	1.7	1.1	0.8
Net income	$ 594.7	$ 510.9	$ 386.0