XML 64 R49.htm IDEA: XBRL DOCUMENT v3.8.0.1
Business And Summary Of Significant Accounting Policies (Narrative) (Details)
$ in Millions
12 Months Ended
Dec. 31, 2017
USD ($)
Reporting_Unit
Dec. 31, 2016
USD ($)
Reporting_Unit
Dec. 31, 2015
USD ($)
Reporting_Unit
Jan. 01, 2018
USD ($)
Number of segments | Reporting_Unit 4 4 4  
Charges associated with doubtful accounts $ 33 $ 33 $ 25  
Net aggregate financing receivables $ 213 191    
Foreign exchange forward        
Derivative, term of contract 12 months      
Operating-type lease arrangements        
Noncancellation period (in years) 2 years      
ASU No. 2017-07        
New accounting pronouncement or change in accounting principle, effect of change on operating results $ (31) (16)    
New accounting pronouncement or change in accounting principle, effect of change on other income 31 16    
Maximum | ASU No. 2014-09 | Scenario, forecast        
New accounting pronouncement, cumulative effect of change on equity or net assets       $ 5
Continuing operations | ASU No. 2016-09        
New accounting pronouncement or change in accounting principle, effect of change on provision for income taxes 55 30    
New accounting pronouncement or change in accounting principle, effect of change on operating cash flow $ 55 $ 30