CONDENSED CONSOLIDATED STATEMENTS OF INCOME (Unaudited) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Operating Revenues:
Transportation	$ 293.3	$ 248.5	$ 599.7	$ 547.0
Storage, parking and lending	22.9	21.6	46.3	46.7
Other	11.1	15.2	27.2	27.0
Total operating revenues	327.3	285.3	673.2	620.7
Operating Costs and Expenses:
Fuel and transportation	4.2	4.1	6.8	8.5
Operation and maintenance	50.7	50.9	93.7	97.3
Administrative and general	37.0	35.7	70.2	67.8
Depreciation and amortization	86.0	84.8	171.8	167.7
Gain on sale of assets and impairments	(0.8)	(0.1)	(0.8)	(0.5)
Taxes other than income taxes	27.8	24.2	56.0	53.5
Total operating costs and expenses	204.9	199.6	397.7	394.3
Operating income	122.4	85.7	275.5	226.4
Other Deductions (Income):
Interest expense	45.5	43.3	90.8	87.4
Interest income	0.0	(0.1)	(0.3)	(0.1)
Miscellaneous other expense (income), net	1.1	0.2	0.9	(0.6)
Total other deductions	46.6	43.4	91.4	86.7
Income before income taxes	75.8	42.3	184.1	139.7
Income taxes	0.1	0.1	0.3	0.3
Net income	$ 75.7	$ 42.2	$ 183.8	$ 139.4