PROPERTY AND EQUIPMENT - SUMMARY (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Property and equipment
Cost	$ 1,988.9	$ 1,798.2
Accumulated Depreciation	1,128.6	1,107.0
Property and equipment, net	860.3	691.2
Depreciation Expense	76.4	66.8	$ 67.4
Property and equipment subject to capital leases	6.4	2.6
Net of accumulated depreciation	1.1	0.7
Amortization expenses	0.6	0.3	$ 0.3
Vessels
Property and equipment
Cost	1,384.8	1,263.8
Accumulated Depreciation	787.4	757.7
Property and equipment, net	597.4	506.1
Containers and equipment
Property and equipment
Cost	496.0	466.8
Accumulated Depreciation	307.8	316.1
Property and equipment, net	188.2	150.7
Terminal facilities and other property
Property and equipment
Cost	42.0	39.2
Accumulated Depreciation	33.4	33.2
Property and equipment, net	8.6	6.0
Construction in progress
Property and equipment
Cost	66.1	28.4
Property and equipment, net	$ 66.1	$ 28.4

Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229

Reference 2: http://www.xbrl.org/2003/role/presentationRef
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The total gross amount less the charge for the use of the long-lived depreciable assets subject to a lease meeting the criteria for capitalization.

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The total charge for the use of long-lived depreciable assets subject to a lease meeting the criteria for capitalization.

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The cumulative amount of depreciation that has been recognized in the income statement related to long-lived, depreciable flight assets used in the entity's principle business operations, subject to a lease and meeting the criteria for capitalization.

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The amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives. Includes production and non-production related depreciation.

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Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

+ References

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Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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