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Business And Summary Of Significant Accounting Policies (Narrative) (Details) (USD $) In Millions, unless otherwise specified	0 Months Ended		12 Months Ended
	May 11, 2010	May 11, 2010	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Stock split ratio, number of shares issued per share	2	2
Charges associated with doubtful accounts			$ 40	$ 40	$ 47
Aggregate financing receivables			$ 175	$ 133

Amount of the current period expense charged against operations, the offset which is generally to the allowance for doubtful accounts for the purpose of reducing receivables, including notes receivable, to an amount that approximates their net realizable value (the amount expected to be collected).

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