Goodwill and Other Intangible Assets, Net (Other Intangible Assets) (Details) (USD $) In Millions, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
Intangible Assets, Net (Excluding Goodwill) [Abstract]
Non-amortizable intangible assets	$ 2,010	$ 2,046
Amortizable intangible assets, gross carrying amount	1,966	2,046
Accumulated Amortization	504	473
Intangible Assets, Gross (Excluding Goodwill)	$ 3,976	$ 4,092