16. SUPPLEMENTAL FINANCIAL INFORMATION

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



In millions	2018			2017			2016
Other income (expense), net
Interest income	$	5		$	3		$	4
Foreign currency fluctuations and foreign exchange contracts	(26		)	(26		)	(40		)
Employee benefit plans	45			(15		)	(75		)
Bank-related fees	(8		)	(8		)	(8		)
Divestiture and liquidation losses	—			—			(6		)
Total other income (expense), net	$	16		$	(46	)	$	(125	)

The components of accounts receivable are summarized as follows:



In millions	December 31, 2018			December 31, 2017
Accounts receivable
Trade	$	1,364		$	1,270
Other	23			37
Accounts receivable, gross	1,387			1,307
Less: allowance for doubtful accounts	(31		)	(37		)
Total accounts receivable, net	$	1,356		$	1,270

The components of inventory are summarized as follows:



In millions	December 31, 2018		December 31, 2017
Inventories
Work in process and raw materials	$	237	$	185
Finished goods	214		190
Service parts	355		405
Total inventories	$	806	$	780

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



In millions	December 31, 2018			December 31, 2017
Property, plant and equipment
Land and improvements	$	6		$	7
Buildings and improvements	273			278
Machinery and other equipment	650			633
Property, plant and equipment, gross	929			918
Less: accumulated depreciation	(570		)	(577		)
Total property, plant and equipment, net	$	359		$	341