Debt (Tables)

9 Months Ended

Sep. 30, 2014

Debt Disclosure [Abstract]

Long-term Debt

Our long-term debt as of September 30, 2014 was as follows (dollars in millions):

Senior Notes	Issued at Discount to Par		Carrying Value
$2.5 billion 1.875% Notes due 2018	99.943	%	$	2,499
$2.0 billion 2.650% Notes due 2020	99.760	%	1,996
$1.0 billion 3.375% Notes due 2023	99.925	%	999
			$	5,494

The following table represent the key components of our interest expense on convertible debt for the three and nine months ended September 30, 2013 (table in millions):

	September 30, 2013
	Three Months Ended		Nine Months Ended
Contractual interest expense on the coupon	$	7	$	22
Amortization of the discount component recognized as interest expense	17		49
Total interest expense on the convertible debt	$	24	$	71