XML 23 R70.htm IDEA: XBRL DOCUMENT v2.4.0.6
Financing (Commercial Paper Program And Credit Facility) (Narrative) (Details)
12 Months Ended
Dec. 31, 2012
USD ($)
Dec. 31, 2011
USD ($)
Dec. 31, 2012
Multi-Year Facility
Dec. 31, 2012
Euro-Denominated Commercial Paper [Member]
USD ($)
Dec. 31, 2012
Euro-Denominated Commercial Paper [Member]
EUR (€)
Dec. 31, 2011
Euro-Denominated Commercial Paper [Member]
USD ($)
Dec. 31, 2012
Euro-Denominated Commercial Paper
USD ($)
Jun. 17, 2011
Unsecured Revolving Credit Facility
Revolving Credit Facility
USD ($)
Dec. 31, 2012
Eurodollars Base Rate
Dec. 31, 2012
Federal Funds Base Rate
Debt Instrument [Line Items]                    
Commercial paper $ 1,224,500,000 $ 977,300,000   $ 66,000,000 € 50,000,000 $ 0        
Weighted average interest rate of short-term debt             0.20%      
Weighted average maturity of commercial paper, days             7 days      
Line of credit             2,500,000,000      
Basis spread percentage to determine floating interest rate                 1.00% 0.50%
Consolidated leverage ratio     0.65              
Line of Credit Facility, Amount Outstanding             0      
Unsecured revolving credit facility               $ 3,000,000,000