Provision For Income Taxes (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Provision (benefit) for income taxes	$ 24	$ (2)	$ 33	$ 11
Income (Loss) from Continuing Operations before Income Taxes, Extraordinary Items, Noncontrolling Interest	89	$ (39)	122	(25)
Effective Income Tax Rate Reconciliation, Repatriation of Foreign Earnings, Amount			5	2
U.S. income tax associated with the Climate Transaction	$ 147
Jurisdictions where valuation allowances are maintained [Member]
Income (Loss) from Continuing Operations before Income Taxes, Extraordinary Items, Noncontrolling Interest			$ (14)	$ (68)