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 |