Debt Obligations (Tables)

3 Months Ended

Mar. 31, 2014

Debt Disclosure [Abstract]

Changes in Debt Obligations

	December 31, 2013		Additions		Payments, Accretion and Other		March 31, 2014
	(in millions)
4.00% senior unsecured notes due January 15, 2015(1)	$	400	$	-	$	-	$	400
5.55% senior unsecured notes due January 15, 2020 (net of discount)(1)		598		-		-		598
5.25% senior unsecured notes due January 16, 2018 (net of discount)(1)		368		-		-		368
3.875% senior unsecured notes due June 7, 2021 (net of discount)(1)		824		-		1		825
$1.2 billion senior unsecured five-year credit facility(2):
$450 million senior unsecured term loan facility credit agreement due September 19, 2016 (average interest rate of 1.54% for the period January 1, 2014 through March 31, 2014)		349		-		(26)		323
$750 million revolving credit commitment due September 19, 2016 (average interest rate of 1.34% for the period January 1, 2014 through March 31, 2014)		95		25		(120)		-
Total debt obligations		2,634		25		(145)		2,514
Less current portion		(45)		-		(385)		(430)
Total long-term debt obligations	$	2,589	$	25	$	(530)	$	2,084

(1)See “Senior Unsecured Notes” below for further discussion.

(2)See “2011 Credit Facility” below for further discussion.