Income Taxes (Schedule of Earnings (Loss) from Continuing Operations Before Tax by Jurisdiction) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011
Income Taxes [Line Items]
US	$ 806		$ 195		$ 60
International	803	[1]	126	[1]	407	[1]
Earnings (loss) from continuing operations before tax	1,609		321		467
Effective income tax rate	32.00%		(17.00%)		9.00%
Aggregated Geographical [Member]
Income Taxes [Line Items]
International	$ 275		$ 320		$ 317
Effective income tax rate	4.00%		5.60%		4.00%

[1] Includes aggregate earnings generated by operations in Bermuda, Luxembourg, the Netherlands and Hong Kong of $275 million, $320 million and $317 million for the years ended December 31, 2013, 2012 and 2011, respectively, which have an aggregate effective income tax rate of 4.0%, 5.6% and 4.0% for each year, respectively.