Basis of Presentation Basis of Presentation (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended		3 Months Ended	9 Months Ended		12 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014 Change in estimates of economic lives of property, plant and equipment	Sep. 30, 2014 Change in estimates of economic lives of property, plant and equipment	Sep. 30, 2014 Change in estimates of economic lives of intangible assets	Dec. 31, 2014 Forecast Change in estimates of economic lives of property, plant and equipment
Change in Accounting Estimate [Line Items]
Depreciation					$ 19	$ 58		$ 78
Amortization							23
Change in net income for change in accounting estimate	$ (188)	$ 1,045	$ (584)	$ 478	$ 12	$ 36	$ 14	$ 48
Earnings per share, basic and diluted					$ 0.02	$ 0.06	$ 0.02	$ 0.08