Debt (Tables)

6 Months Ended

Jun. 30, 2014

Debt Disclosure [Abstract]

Key Components of Convertible Debt

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

	June 30, 2013
	Three Months Ended		Six Months Ended
Contractual interest expense on the coupon	$	7	$	15
Amortization of the discount component recognized as interest expense	16		31
Total interest expense on the convertible debt	$	23	$	46

Our long-term debt as of June 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