Carrying value as of the balance sheet date of short-term borrowings using unsecured obligations issued by banks, corporations and other borrowers to investors. The maturities of these money market securities generally do not exceed 270 days.

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The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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Financing (Commercial Paper Program And Credit Facility) (Narrative) (Details)								0 Months Ended			30 Months Ended	42 Months Ended
	Dec. 31, 2014 USD ($)	Dec. 31, 2013 USD ($)	Dec. 31, 2014 Euro-Denominated Commercial Paper USD ($)	Dec. 31, 2014 Euro-Denominated Commercial Paper EUR (€)	Dec. 31, 2013 Euro-Denominated Commercial Paper USD ($)	Dec. 31, 2014 U.S. Dollar-Denominated Commercial Paper USD ($)	Dec. 31, 2013 U.S. Dollar-Denominated Commercial Paper USD ($)	Dec. 31, 2014 Commercial Paper	Dec. 31, 2014 Commercial Paper	Dec. 31, 2014 Revolving Credit Facility USD ($)	Jul. 15, 2016 Eurodollars Base Rate Revolving Credit Facility	Jul. 15, 2016 Minimum Federal Funds Base Rate Revolving Credit Facility
Debt Instrument [Line Items]
Commercial paper	$ 764,600,000us-gaap_CommercialPaper	$ 450,000,000us-gaap_CommercialPaper	$ 315,000,000	€ 260,000,000	$ 0	$ 450,000,000	$ 450,000,000
Weighted average interest rate of short-term debt									0.13%
Weighted average maturity of commercial paper, days								12 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