Property, Plant and Equipment, net

12 Months Ended

Dec. 31, 2013

Property, Plant and Equipment [Abstract]

Property, Plant and Equipment, net

 Property, Plant and Equipment, net

Property, plant and equipment, net consists of the following:

	December 31, 2013			December 31, 2012
Land	$	17.9		$	17.7
Buildings (including improvements)	566.0			504.7
Machinery and equipment	1,084.0			960.0
Tooling	801.6			722.4
Capitalized software	172.2			170.2
Construction-in-progress	130.2			143.0
Total	2,771.9			2,518.0
Less: accumulated depreciation	(968.6		)	(819.5		)
Property, plant and equipment, net	$	1,803.3		$	1,698.5

Interest costs associated with construction-in-progress are capitalized until the assets are completed and ready for use. Capitalized interest was $5.8 and $7.5 for the twelve months ended December 31, 2013 and December 31, 2012, respectively. Repair and maintenance costs are expensed as incurred. The Company recognized repair and maintenance costs, excluding the impact of the severe weather event, of $112.5, $124.2 and $115.5 for the twelve months ended December 31, 2013, December 31, 2012 and December 31, 2011, respectively.

We capitalize certain costs, such as software coding, installation and testing, that are incurred to purchase or to create and implement internal use computer software in accordance with FASB authoritative guidance pertaining to capitalization of costs for internal-use software. Depreciation expense related to capitalized software was $19.6, $18.6 and $18.6 for the twelve months ended December 31, 2013, December 31, 2012 and December 31, 2011, respectively.

Spirit reviews capital and amortizing intangible assets (long-lived assets) for impairment on an annual basis or whenever events or changes in circumstances indicate that the carrying amount may not be recoverable in accordance with FASB authoritative guidance on accounting for the impairment or disposal of long-lived assets. We evaluated the long-lived assets at our locations and determined no impairment was necessary.