Valuation and Qualifying Accounts Valuation and Qualifying Accounts (Tables)

12 Months Ended

Dec. 31, 2013

Valuation and Qualifying Accounts [Abstract]

Summary of Valuation Allowance [Table Text Block]

	Year Ended December 31,
	2013			2012			2011
Allowance for Doubtful Accounts (shown as deduction from Accounts Receivable in the Consolidated Statements of Financial Position)	(In millions)
Balance at Beginning of Period	$	35		$	80		$	93
Additions:
Charged to costs and expenses	52			40			47
Charged to other accounts (a)	11			7			8
Deductions (b)	(70		)	(92		)	(68		)
Balance At End of Period	$	28		$	35		$	80

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(a) Collection of accounts previously written off.

(b) Uncollectible accounts written off.