Interest Expense (Tables)

3 Months Ended

Mar. 31, 2014

Interest Income (Expense), Net [Abstract]

Components of net interest expense

The following are the components of net interest expense:

	Three Months Ended March 31,
In millions	2014			2013
Interest expense	$	161		$	127
Interest income	(3		)	(1		)
Interest expense, net	$	158		$	126