Valuation and Qualifying Accounts Valuation and Qualifying Accounts (Tables)

12 Months Ended

Dec. 31, 2012

Valuation and Qualifying Accounts [Abstract]

Summary of Valuation Allowance [Table Text Block]

Valuation and Qualifying Accounts



	Year Ending December 31,
	2012			2011			2010
	(In millions)
Allowance for Doubtful Accounts (shown as deduction from Accounts Receivable in the Consolidated Statements of Financial Position)
Balance at Beginning of Period	$	162		$	196		$	262
Additions:
Charged to costs and expenses	79			94			113
Charged to other accounts (a)	16			18			20
Deductions (b)	(195		)	(146		)	(199		)
Balance at End of Period	$	62		$	162		$	196

- Definition

Tabular disclosure of valuation allowances to reduce deferred tax assets to net realizable value, including identification of the deferred tax asset more likely than not will not be fully realized and the corresponding amount of the valuation allowance.

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