Balance Sheet Parenthetical Parentheticals (USD $) In Millions, except Per Share data, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010
Cash equivalents	$ 623.7	$ 572.0
Allowances	$ 174.5	$ 232.0
Common stock, par value	$ 0.25	$ 0.25
Common stock, shares authorized	1,500.0	1,500.0
Common stock, shares issued	744.9	743.3
Treasury stock	314.1	313.8

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 of common stock per share; generally not indicative of the fair market value per share.

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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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