15. SUPPLEMENTAL FINANCIAL INFORMATION

The components of other (expense), net are summarized as follows for the years ended December 31:



In millions	2016			2015			2014
Other (expense), net
Interest income	$	4		$	5		$	6
Foreign currency fluctuations and foreign exchange contracts	(40		)	(21		)	(32		)
Impairment of an investment	—			—			(3		)
Divestiture and liquidation losses	(6		)	(34		)	—
Gain on sale of available for sale securities	—			—			4
Other, net	(8		)	(7		)	(10		)
Total other (expense), net	$	(50	)	$	(57	)	$	(35	)

The components of accounts receivable are summarized as follows:



In millions	December 31, 2016			December 31, 2015
Accounts receivable
Trade	$	1,266		$	1,259
Other	57			39
Accounts receivable, gross	1,323			1,298
Less: allowance for doubtful accounts	(41		)	(47		)
Total accounts receivable, net	$	1,282		$	1,251

The components of inventory are summarized as follows:



In millions	December 31, 2016		December 31, 2015
Inventories
Work in process and raw materials	$	154	$	137
Finished goods	149		129
Service parts	396		377
Total inventories	$	699	$	643

The components of other current assets are summarized as follows:

The components of property, plant and equipment are summarized as follows:



In millions	December 31, 2016			December 31, 2015
Property, plant and equipment
Land and improvements	$	6		$	7
Buildings and improvements	198			196
Machinery and other equipment	598			597
Property, plant and equipment, gross	802			800
Less: accumulated depreciation	(515		)	(478		)
Total property, plant and equipment, net	$	287		$	322