Goodwill And Other Intangibles (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Finite-Lived Intangible Assets [Line Items]
Amortization expense	$ 337	$ 304	$ 329
Estimated future amortization expense, year 1	285
Estimated future amortization expense, year 2	230
Estimated future amortization expense, year 3	175
Estimated future amortization expense, year 4	120
Estimated future amortization expense, year 5	$ 80
Minimum [Member]
Finite-Lived Intangible Assets [Line Items]
Estimated useful life	9 years
Maximum [Member]
Finite-Lived Intangible Assets [Line Items]
Estimated useful life	12 years