Goodwill and Other Intangible Assets, net (Narrative) (Details) (USD $)	3 Months Ended			9 Months Ended
	Sep. 30, 2014	Mar. 31, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Goodwill and Intangible Assets Disclosure [Abstract]
Intangible assets, pre-tax amortization expense	$ 23,000,000		$ 23,000,000	$ 67,000,000	$ 71,000,000
Estimated Amortization Expense, Year One, assuming no additional transactions occur that require the amortization of intangible assets	86,000,000			86,000,000
Estimated Amortization Expense, Year Two, assuming no additional transactions occur that require the amortization of intangible assets	86,000,000			86,000,000
Estimated Amortization Expense, Year Three, assuming no additional transactions occur that require the amortization of intangible assets	86,000,000			86,000,000
Estimated Amortization Expense, Year Four, assuming no additional transactions occur that require the amortization of intangible assets	86,000,000			86,000,000
Estimated Amortization Expense, Year Five, assuming no additional transactions occur that require the amortization of intangible assets	86,000,000			86,000,000
Goodwill, Impairment Loss		$ 0