Consolidated Statements of Comprehensive Income (Unaudited) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Net Income	$ 130	$ 90	$ 267	$ 206
Other comprehensive income (loss), net of tax:
Benefit obligations, net of taxes of $1, $—, $— and $—, respectively	0	1	(1)	1
Comprehensive income	$ 130	$ 91	$ 266	$ 207