Income Taxes (Net Operating Loss Carryforwards and Tax Credit Carryforwards) (Details) (USD $)	Sep. 30, 2014	Dec. 31, 2013
Internal Revenue Service (IRS) [Member]
Net Operating Loss Carryforwards	$ 1,037,000,000	$ 1,116,000,000
Tax Credit Carryforward	84,000,000	221,000,000
State and Local Jurisdiction [Member]
Net Operating Loss Carryforwards	2,723,000,000	2,958,000,000
Tax Credit Carryforward	$ 9,000,000	$ 7,000,000