Business And Summary Of Significant Accounting Policies (Narrative) (Details) $ in Millions	12 Months Ended
	Dec. 31, 2015 USD ($) Reporting_Unit	Dec. 31, 2014 USD ($)	Dec. 31, 2013 USD ($)
Number of segments | Reporting_Unit	5
Charges associated with doubtful accounts	$ 57	$ 43	$ 28
Net aggregate financing receivables	$ 315	$ 275
Foreign exchange forward
Derivative, term of contract	12 months
Operating-type lease arrangements
Noncancellation period (in years)	2 years