Supplemental Financial Information

3 Months Ended

Mar. 31, 2019

Supplemental Financial Information [Abstract]

SUPPLEMENTAL FINANCIAL INFORMATION

16. SUPPLEMENTAL FINANCIAL INFORMATION

The components of accounts receivable are summarized as follows:

In millions	March 31, 2019			December 31, 2018
Accounts receivable
Trade	$	1,342		$	1,364
Other	25			23
Accounts receivable, gross	1,367			1,387
Less: allowance for doubtful accounts	(32		)	(31		)
Total accounts receivable, net	$	1,335		$	1,356

The components of inventory are summarized as follows:

In millions	March 31, 2019		December 31, 2018
Inventories
Work in process and raw materials	$	233	$	237
Finished goods	278		214
Service parts	363		355
Total inventories	$	874	$	806