Debt (Tables)

9 Months Ended

Sep. 30, 2015

Debt Disclosure [Abstract]

Carrying value of outstanding debt

The following table summarizes the carrying value of our outstanding debt:

	Coupon		Carrying Value as of		Effective		Carrying Value as of		Effective
	Rate		September 30, 2015		Interest Rate		December 31, 2014		Interest Rate
	(In millions, except percentages)
Long-Term Debt
Floating Rate Notes:
Senior notes due 2017	LIBOR plus 0.20%		$	450	0.574	%	$	450	0.560	%
Senior notes due 2019	LIBOR plus 0.48%		400		0.819	%	400		0.811	%
Fixed Rate Notes:
Senior notes due 2017	1.350	%	1,000		1.456	%	1,000		1.456	%
Senior notes due 2019	2.200	%	1,148		2.346	%	1,148		2.346	%
Senior notes due 2020	3.250	%	499		3.389	%	498		3.389	%
Senior notes due 2021	2.875	%	749		2.993	%	749		2.993	%
Senior notes due 2022	2.600	%	999		2.678	%	999		2.678	%
Senior notes due 2024	3.450	%	749		3.531	%	749		3.531	%
Senior notes due 2042	4.000	%	743		4.114	%	743		4.114	%
Total senior notes			6,737				6,736
Hedge accounting fair value adjustments			77				22
Other indebtedness			—				19
Total long-term debt			$	6,814			$	6,777
Short-Term Debt
Senior notes due 2015	—	%	—		0.820	%	250		0.820	%
Senior notes due 2015	1.625	%	600		1.805	%	600		1.805	%
Other indebtedness			25				—
Total short-term debt			625				850
Total Debt			$	7,439			$	7,627