Goodwill, Intangible Assets and Impairment - Schedule of Goodwill (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2013	Dec. 31, 2011
Goodwill [Roll Forward]
Goodwill Gross, beginning of period		$ 0	$ 0
Accumulated Impairment Losses, beginning of period		0	0
Goodwill Net , beginning of period		0	0
Additions		389
Impairments	(74)	(74)
Goodwill Gross, end of period	389	389	0
Accumulated Impairment Losses, end of period	(74)	(74)	0
Goodwill Net, end of period	$ 315	$ 315	$ 0