Income Taxes - Deferred Tax Assets and Liabilities Netted by Taxing (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Components of Deferred Tax Assets and Liabilities [Abstract]
Deferred taxes	$ 31	$ 32
Other assets	11	17
Other accrued expenses	(2)	(2)
Deferred tax liabilities	(74)	(64)
Net deferred tax assets (liabilities)	$ (34)	$ (17)