Additional Information

12 Months Ended

Dec. 31, 2013

Additional Information [Abstract]

Additional Information

Additional Information:

	For the Years Ended December 31,
(in millions)	2013			2012			2011
Research and development expense	$	449		$	415		$	413
Advertising expense	$	435		$	483		$	464
Interest expense	$	1,104		$	1,007		$	934
Interest income	(131		)	(148		)	(134		)
Interest expense, net	$	973		$	859		$	800
Rent expense	$	334		$	318		$	308

Minimum rental commitments under non-cancelable operating leases in effect at December 31, 2013, were as follows:

(in millions)
2014	$	218
2015	160
2016	124
2017	81
2018	52
Thereafter	211
	$	846