Goodwill And Other Intangible Assets (Narrative) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Goodwill And Other Intangible Assets [Abstract]
Amortization expense related to other intangible assets	$ 200	$ 179	$ 136
Expected amortization expense of other intangible assets for 2012	214
Expected amortization expense of other intangible assets for 2013	212
Expected amortization expense of other intangible assets for 2014	205
Expected amortization expense of other intangible assets for 2015	190
Expected amortization expense of other intangible assets for 2016	$ 178