INVESTMENT IN TERMINAL JOINT VENTURE (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Investments in affiliates
Investment in terminal joint venture	$ 57.6	$ 59.6
Financial information for equity method investment
The Company's share of net (loss) income	(2.0)	3.2	8.6
SSAT | Ocean Transportation
Investments in affiliates
Ownership interest accounted in terminal joint venture (as a percent)	35.00%
Cost of services from transactions with unconsolidated affiliate	164.3	163.8	175.2
Dividends and distributions from the unconsolidated terminal venture	0	0	5.3
Accounts payable and accrued liabilities	15.3	15.7
Financial information for equity method investment
Current assets	73.5	90.8
Noncurrent assets	137.1	139.2
Total assets	210.6	230.0
Current liabilities	43.2	55.9
Noncurrent liabilities	15.7	14.7
Equity	151.7	159.4
Total liabilities	210.6	230.0
Operating revenue	498.4	503.9	578.6
Operating costs and expenses	517.4	506.4	571.7
Operating (loss) income	(19.0)	(2.5)	6.9
Net (loss) income	(5.7)	9.5	26.3
The Company's share of net (loss) income	$ (2.0)	$ 3.2	$ 8.6