Property, Plant and Equipment (Tables)

12 Months Ended

Dec. 31, 2014

Property, Plant and Equipment [Abstract]

Components of Property, Plant and Equipment

Depreciation commences upon placing the asset in service and is recognized on a straight-line basis over the estimated useful lives of the assets, as follows:

Furniture and fixtures	5-10 years
Equipment and software	2-10 years
Improvements	5-31 years
Buildings	15-51 years

Property, plant and equipment consist of (table in millions):

	December 31, 2014			December 31, 2013
Furniture and fixtures	$	255		$	229
Equipment and software	6,684			5,973
Buildings and improvements	2,308			2,089
Land	162			132
Building construction in progress	134			215
	9,543			8,638
Accumulated depreciation	(5,777		)	(5,160		)
	$	3,766		$	3,478