Consolidated Statements of Financial Position (Parenthetical) (USD $) In Millions, except Share data, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Current Assets
Allowance for doubtful accounts	$ 29	$ 28
Shareholder’s Equity
Common stock par value (in dollars per share)	$ 10	$ 10
Common stock shares authorized (in shares)	400,000,000us-gaap_CommonStockSharesAuthorized	400,000,000us-gaap_CommonStockSharesAuthorized
Common stock shares issued (In shares)	138,632,324us-gaap_CommonStockSharesIssued	138,632,324us-gaap_CommonStockSharesIssued
Common stock shares outstanding (in shares)	138,632,324us-gaap_CommonStockSharesOutstanding	138,632,324us-gaap_CommonStockSharesOutstanding

For an unclassified balance sheet, a valuation allowance for receivables due a company that are expected to be uncollectible.

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