Debt (Tables)

6 Months Ended

Jun. 30, 2014

Debt [Abstract]

Components Of Debt

	June 30,		December 31,
	2014		2013
	(in millions)
Short-term debt:
7.15% Senior Notes due 2018	$	1	$	1
Total short-term debt		1		1
Long-term debt:
Variable rate (1.50% and 1.64% at June 30, 2014 and December 31, 2013, respectively) Credit Facility, expires December 2018		171		283
7.35% Senior Notes due 2017		15		15
7.125% Senior Notes due 2017		25		25
7.15% Senior Notes due 2018		28		28
7.5% Senior Notes due 2018		600		600
4.10% Senior Notes due 2022		1,000		1,000
Unamortized discount		(1)		(1)
Total long-term debt		1,838		1,950
Total debt	$	1,839	$	1,951