Property, Plant and Equipment

12 Months Ended

Dec. 31, 2011

Property, Plant and Equipment [Abstract]

Property, Plant and Equipment

Note 10 — Property, Plant and Equipment

Major classes of property, plant and equipment were as follows:

	December 31, 2011			January 1, 2011
	(In thousands)
Land and land improvements	$	484,805		$	482,368
Buildings and leasehold improvements		417,619			409,382
Machinery and equipment		853,127			830,415
Vessels and containers		156,356			168,842
Vessels and equipment under capital leases		85,987			90,196
Construction in progress		63,139			79,288
		2,061,033			2,060,491
Accumulated depreciation		(1,150,304	)		(1,117,461	)
	$	910,729		$	943,030

Depreciation is computed by the straight-line method over the estimated useful lives of the assets as follows:

	Years
Land improvements	3 to 40
Buildings and leasehold improvements	2 to 50
Machinery and equipment	3 to 20
Vessels and containers	5 to 20
Vessels and equipment under capital leases	Shorter of useful life or life of lease

Depreciation expense on property, plant and equipment for continuing operations totaled $99.5 million, $110.4 million and $115.8 million for the years ended December 31, 2011, January 1, 2011 and January 2, 2010, respectively. There was no depreciation expense on property, plant and equipment for discontinued operations for the years ended December 31, 2011, January 1, 2011 and January 2, 2010.