PROPERTY (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Property
Cost	$ 1,770.8	$ 1,760.7
Accumulated Depreciation and Amortization	(1,008.3)	(960.2)
Property - net	762.5	800.5
Depreciation Expense	70.6	69.4	68.1
Vessels
Property
Cost	1,249.1	1,225.8
Accumulated Depreciation and Amortization	(679.4)	(639.3)
Property - net	569.7	586.5
Containers and equipment
Property
Cost	468.5	481.3
Accumulated Depreciation and Amortization	(300.1)	(294.8)
Property - net	168.4	186.5
Terminal facilities and other property
Property
Cost	38.5	37.9
Accumulated Depreciation and Amortization	(28.8)	(26.1)
Property - net	9.7	11.8
Construction in progress
Property
Cost	14.7	15.7
Property - net	$ 14.7	$ 15.7

The cumulative amount of depreciation, depletion and amortization (related to property, plant and equipment, but not including land) that has been recognized in the income statement.

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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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- Definition

Gross amount of long-lived 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, furniture and fixtures, and computer equipment.

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- Definition

Amount, net of accumulated depreciation, depletion and amortization, of long-lived 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, furniture and fixtures, and computer equipment.

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