v3.3.1.900
Debt Narrative (Details) - USD ($)
12 Months Ended
Nov. 02, 2015
Jun. 15, 2015
Apr. 01, 2015
Oct. 03, 2014
Jun. 16, 2014
Mar. 20, 2014
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Debt Instrument [Line Items]                  
Repayments of Debt             $ 1,027,000,000 $ 582,000,000 $ 1,096,000,000
Short-term Debt             426,000,000 $ 2,000,000  
US Short Term Commercial Paper             $ 400,000,000    
Short-term Debt, Weighted Average Interest Rate             0.78%    
US Other Short Term Debt             $ 8,000,000    
Non US Short Term Debt             $ 18,000,000    
Debenture [Member] | Debenture due 2015 [Member]                  
Debt Instrument [Line Items]                  
Debt Instrument, Interest Rate, Stated Percentage             5.45% 5.45%  
Long term debt debentures             $ 0 $ 300,000,000  
Repayments of Debt     $ 300,000,000            
Notes [Member] | Notes due 2015 [Member]                  
Debt Instrument [Line Items]                  
Debt Instrument, Interest Rate, Stated Percentage             4.65% 4.65%  
Long term debt debentures               $ 100,000,000  
Notes             $ 0    
Repayments of Debt   $ 100,000,000              
Notes [Member] | Notes due 2014 [Member]                  
Debt Instrument [Line Items]                  
Debt Instrument, Interest Rate, Stated Percentage               5.95%  
Repayments of Debt           $ 250,000,000      
Notes [Member] | Floating rate notes due 2014 [Member]                  
Debt Instrument [Line Items]                  
Repayments of Debt         $ 300,000,000        
Senior Notes [Member] | Senior notes due 2015 [Member]                  
Debt Instrument [Line Items]                  
Debt Instrument, Interest Rate, Stated Percentage             0.95% 0.95%  
Long term debt debentures               $ 600,000,000  
Senior Notes             $ 0    
Repayments of Debt $ 600,000,000                
Refinanced five-year revolving credit facility [Member]                  
Debt Instrument [Line Items]                  
Credit Facility, Maximum Borrowing Capacity       $ 500,000,000          
Revolving credit facility, term       5 years          
Refinanced three-year revolving credit facility [Member]                  
Debt Instrument [Line Items]                  
Credit Facility, Maximum Borrowing Capacity       $ 750,000,000          
Revolving credit facility, term       3 years          
Four-year revolving credit facility, expires October 3, 2018 [Member]                  
Debt Instrument [Line Items]                  
Credit Facility, Maximum Borrowing Capacity       $ 500,000,000          
Revolving credit facility, term       4 years          
Five-year revolving credit facility, expires October 3, 2019 [Member]                  
Debt Instrument [Line Items]                  
Credit Facility, Maximum Borrowing Capacity       $ 750,000,000          
Revolving credit facility, term       5 years          
Five-year revolving credit facility, expires June 14, 2017 [Member]                  
Debt Instrument [Line Items]                  
Credit Facility, Maximum Borrowing Capacity             $ 750,000,000    
Revolving credit facility, term             5 years    
Revolving Credit Facility [Member]                  
Debt Instrument [Line Items]                  
Credit Facility, Maximum Borrowing Capacity             $ 2,000,000,000    
Long-term Line of Credit             0 $ 0  
Letter of Credit [Member]                  
Debt Instrument [Line Items]                  
Credit Facility, Maximum Borrowing Capacity             850,000,000    
Letters of Credit Outstanding, Amount             $ 351,000,000