Condensed Consolidated Balance Sheets (USD $) In Millions, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
Current Assets:
Cash and cash equivalents	$ 39.1	$ 19.9
Accounts and notes receivable, net	179.6	174.7
Inventories	4.3	4.3
Deferred income taxes	6.6	6.6
Prepaid expenses and other assets	24.1	28.6
Total current assets	253.7	234.1
Investment in terminal joint venture	59.0	59.6
Property, at cost	1,782.2	1,770.8
Less accumulated depreciation and amortization	(1,038.2)	(1,008.3)
Property - net	744.0	762.5
Other Assets	111.8	118.1
Total	1,168.5	1,174.3
Current Liabilities:
Notes payable and current portion of long-term debt	12.4	16.4
Accounts payable	138.5	125.8
Payroll and vacation benefits	16.5	16.0
Uninsured claims	13.6	11.2
Accrued and other liabilities	25.1	24.0
Total current liabilities	206.1	193.4
Long-term Liabilities:
Long-term debt	280.0	302.7
Deferred income taxes	242.4	251.9
Employee benefit plans	109.4	108.0
Uninsured claims and other liabilities	38.2	38.4
Total long-term liabilities	670.0	701.0
Commitments and Contingencies (Note 4)
Shareholders' Equity:
Capital stock	32.0	31.9
Additional paid in capital	255.2	252.7
Accumulated other comprehensive loss	(44.9)	(45.5)
Retained earnings	50.1	40.8
Total shareholders' equity	292.4	279.9
Total	$ 1,168.5	$ 1,174.3