CONDENSED CONSOLIDATED STATEMENTS OF INCOME (Unaudited) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Operating Revenues:
Transportation	$ 304.3	$ 284.1
Parking and lending	9.2	7.9
Storage	28.8	28.1
Other	14.6	8.4
Total operating revenues	356.9	328.5
Operating Costs and Expenses:
Fuel and transportation	33.0	22.7
Operation and maintenance	42.7	40.2
Administrative and general	26.8	31.4
Depreciation and amortization	69.2	66.8
Asset impairment	7.2	0.1
Net gain on sale of operating assets	(0.4)	0
Taxes other than income taxes	25.8	25.6
Total operating costs and expenses	204.3	186.8
Operating income	152.6	141.7
Other Deductions (Income):
Interest expense	40.9	40.5
Interest income	(0.1)	(0.2)
Equity losses in unconsolidated affiliates	86.1	0
Miscellaneous other income, net	(0.1)	(0.2)
Total other deductions	126.8	40.1
Income before income taxes	25.8	101.6
Income taxes	0.2	0.2
Net Income	25.6	101.4
Net loss attributable to noncontrolling interests	(84.6)	0
Net income attributable to controlling interests	$ 110.2	$ 101.4