SIGNIFICANT ACCOUNTING POLICIES (Details 2) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013 vessel item	Dec. 31, 2012	Dec. 31, 2011
Impairment of Investment
Impairment charges related to investment in Terminal joint venture	$ 0	$ 0	$ 0
Impairment of Vessels and Equipment
Impairment charges of vessels and equipment	0	0	0
Dry-docking
Number of dry-docking inspections to be made within a specified period	2
Period within which number of specified dry-docking inspections to be made	5 years
Number of non-U.S. flag vessels in operations	4
Number of non-U.S. flag vessels owned	1
Number of non-U.S. flag vessels under bareboat charter	1
Number of non-U.S. flag vessels under time charter	2
Dry-dock interval, minimum	2 years
Dry-dock interval, maximum	5 years
Deferred dry-docking costs	$ 56.9	$ 66.3
Vessels | Minimum
Depreciation
Useful life	5 years
Vessels | Maximum
Depreciation
Useful life	40 years
Machinery and equipment | Minimum
Depreciation
Useful life	2 years
Machinery and equipment | Maximum
Depreciation
Useful life	20 years
Terminal Facilities | Minimum
Depreciation
Useful life	2 years
Terminal Facilities | Maximum
Depreciation
Useful life	35 years