Income Taxes Components of Income Tax Provision (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Components of income tax provision [Line Items]
Current Federal Tax Expense (Benefit)	$ (206)	$ 553	$ (4)
Current State and Local Tax Expense (Benefit)	(16)	26	0
Current Income Tax Expense (Benefit)	(222)	579	(4)
Deferred Federal Income Tax Expense (Benefit)	444	229	81
Deferred State and Local Income Tax Expense (Benefit)	51	(35)	2
Deferred Income Tax Expense (Benefit)	495	194	83
Income Tax Expense (Benefit)	$ 273	$ 773	$ 79