Condensed Consolidated Balance Sheet (Unaudited) (Parenthetical) (USD $) In Millions, except Share data	Jun. 30, 2011	Dec. 31, 2010
Current Assets
Allowances for doubtful receivables	$ 18.2	$ 16.8
Accumulated depreciation	$ 1,939.2	$ 1,843.9
Shareholders' Equity
Common stock, par value in USD per share	$ 5	$ 5
Common stock, share authorized	200,000,000	200,000,000
Common stock, share issued	149,418,717	148,213,331
Common stock shares held by wholly owned subsidiary	14,000,000	14,000,000
Common stock held in treasury	24,413,486	23,259,865

Total number of common shares of an entity that have been sold or granted to shareholders (excluding shares held by wholly owned subsidiary). These shares represent capital invested by the firm's shareholders and owners, and may be all or only a portion of the number of shares authorized.

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Common stock, shares held by wholly owned subsidiary.

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- Definition

The cumulative amount of depreciation, depletion and amortization (related to property, plant and equipment, but not including land) that has been recognized in the income statement.

+ References

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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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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Face amount or stated value of common stock per share; generally not indicative of the fair market value per share.

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-Publisher SEC
-Name Regulation S-X (SX)
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-Publisher FASB
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The maximum number of common shares permitted to be issued by an entity's charter and bylaws.

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Number of common and preferred shares that were previously issued and that were repurchased by the issuing entity and held in treasury on the financial statement date. This stock has no voting rights and receives no dividends.

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