Condensed Consolidated Statements of Cash Flows (USD $) In Millions, unless otherwise specified	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012
Cash Flows from Operating Activities from Continuing Operations
Income From Continuing Operations	$ 46.4	$ 36.3
Reconciling adjustments:
Depreciation and amortization	52.1	56.0
Deferred income taxes	43.9	(7.2)
Gain on disposal of property		(0.2)
Post-retirement expense	1.2	2.4
Share-based compensation expense	4.3	2.9
Equity in loss (income) of terminal joint venture	3.0	(3.1)
Changes in assets and liabilities:
Accounts receivable	3.7	2.3
Inventory		(0.1)
Deferred dry-docking payments	(10.6)	(32.2)
Deferred dry-docking amortization	17.1	17.3
Prepaid expenses and other assets	(23.8)	(5.3)
Accounts payable and accrued liabilities	4.8	(9.5)
Other liabilities	(4.3)	8.7
Net cash provided by operating activities from continuing operations	137.8	68.3
Cash Flows from Investing Activities from Continuing Operations:
Capital expenditures	(19.7)	(30.8)
Proceeds from disposal of property and other assets	4.0	0.9
Deposits into Capital Construction Fund	(4.4)	(4.4)
Withdrawals from Capital Construction Fund	4.4	4.4
Acquisitions and other	(9.3)
Contribution from the Former Parent Company		24.9
Net cash used in investing activities from continuing operations	(25.0)	(5.0)
Cash Flows from Financing Activities from Continuing Operations:
Proceeds from issuance of long-term debt net of issuance costs	21.0	185.1
Payments of long-term debt	(41.9)	(49.9)
Payments on line-of-credit agreements, net	(11.0)	(6.0)
Payment on capital leases	(0.8)
Contribution upon Separation to A&B		(155.0)
Proceeds from issuance of capital stock	1.7	24.8
Distribution to the Former Parent Company for proceeds from issuance of capital stock		(21.7)
Cash assumed by A&B upon Separation		(2.5)
Dividends paid	(19.9)	(33.1)
Net cash used in financing activities from continuing operations	(50.9)	(58.3)
Cash Flows from Discontinued Operations:
Cash flows used in operating activities of discontinued operations		(30.1)
Cash flows used in investing activities of discontinued operations		(18.8)
Cash flows provided by financing activities of discontinued operations		33.9
Net cash flows used in discontinued operations		(15.0)
Net Increase in Cash and Cash Equivalents	61.9	(10.0)
Cash and cash equivalents, beginning of the period	19.9	21.5
Cash and cash equivalents, end of the period	81.8	11.5
Other Cash Flow Information:
Interest paid	8.9	6.5
Income taxes paid	8.9	28.2
Other Non-cash Information:
Capital expenditures included in accounts payable and accrued liabilities	3.0	0.1
Non-cash capital lease obligations	$ 2.9