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Condensed Consolidated Balance Sheets (Parentheticals) (USD $) In Millions, except Per Share data, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
Allowance for D/A	$ 82	$ 83
Accumulated depreciation	$ 958	$ 919
Common stock par value	$ 0.01	$ 0.01

X

- Definition

Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

+ References

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- Definition

A valuation allowance for trade and other receivables due to an Entity within one year (or the normal operating cycle, whichever is longer) that are expected to be uncollectible.

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Face amount or stated value per share of common stock.

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