Supplemental Financial Information

9 Months Ended

Sep. 30, 2017

Supplemental Financial Information [Abstract]

Supplemental Financial Information

16. SUPPLEMENTAL FINANCIAL INFORMATION

The components of accounts receivable are summarized as follows:

In millions	September 30, 2017			December 31, 2016
Accounts receivable
Trade	$	1,409		$	1,266
Other	39			57
Accounts receivable, gross	1,448			1,323
Less: allowance for doubtful accounts	(40		)	(41		)
Total accounts receivable, net	$	1,408		$	1,282

The components of inventory are summarized as follows:

In millions	September 30, 2017		December 31, 2016
Inventories
Work in process and raw materials	$	197	$	154
Finished goods	220		149
Service parts	407		396
Total inventories	$	824	$	699