Goodwill And Other Intangible Assets, Net Narrative (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended			6 Months Ended
	Jun. 30, 2012	Mar. 31, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Goodwill and Intangible Assets Disclosure [Abstract]
Intangible assets, pre-tax amortization expense	$ 25		$ 24	$ 49	$ 48
Future Amortization Expense, Year One	98			98
Future Amortization Expense, Year Two	98			98
Future Amortization Expense, Year Three	98			98
Future Amortization Expense, Year Four	98			98
Future Amortization Expense, Year Five	98			98
Goodwill, Impairment Loss		$ 0