Goodwill And Other Intangible Assets, Net (Narrative) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended					12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Jan. 31, 2009 UST [Member]	Dec. 31, 2007 Middleton [Member]	Dec. 31, 2012 Definite-Lived Intangible Assets [Member]
Goodwill And Intangible Assets [Line Items]
Indefinite-lived intangible assets	$ 11,701	$ 11,701		$ 9,100	$ 2,600
Definite-lived intangible assets amortization period, maximum, in years						25 years
Definite-lived intangible assets amortization expense	20	20	20
Estimated future amortization, year 1	20
Estimated future amortization, year 2	20
Estimated future amortization, year 3	20
Estimated future amortization, year 4	20
Estimated future amortization, year 5	20
Changes in goodwill	0	0
Changes in other intangible assets	$ 0	$ 0