Condensed Consolidated Balance Sheets (Unaudited) (Parenthetical) (USD $) In Millions, except Per Share data	Sep. 30, 2011	Dec. 31, 2010
Current assets
Allowance for doubtful accounts	$ 3.1	$ 2.8
Shareholders' equity
Common stock, par value	$ 1	$ 1
Common stock, shares authorized	90.0	90.0
Common stock, shares issued	63.1	63.0
Treasury stock, shares	0.9	0.9

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

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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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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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