Supplemental Financial Information (Tables)

9 Months Ended

Sep. 30, 2019

Supplemental Financial Information [Abstract]

Schedule of Components of Accounts Receivable

The components of accounts receivable are summarized as follows:

In millions	September 30, 2019			December 31, 2018
Accounts receivable
Trade	$	1,498		$	1,364
Other	33			23
Accounts receivable, gross	1,531			1,387
Less: allowance for doubtful accounts	(44		)	(31		)
Total accounts receivable, net	$	1,487		$	1,356

Schedule of Components of Inventory

The components of inventory are summarized as follows:

In millions	September 30, 2019		December 31, 2018
Inventories
Work in process and raw materials	$	219	$	237
Finished goods	263		214
Service parts	383		355
Total inventories	$	865	$	806