Interest Expense, Net (Tables)

9 Months Ended

Sep. 30, 2018

Interest Expense, Net

Components of net interest expense

	Three Months Ended				Nine Months Ended
	September 30,				September 30,
In millions	2018		2017		2018		2017
Interest expense	$	674	$	250	$	1,886	$	759
Interest income		(221)		(5)		(485)		(15)
Interest expense, net	$	453	$	245	$	1,401	$	744