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CONSOLIDATED BALANCE SHEET (Parenthetical) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Current assets
Trade receivables allowance	$ 9.7	$ 9.5
Stockholders’ equity
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	300,000,000.0	300,000,000.0
Common stock, shares issued (in shares)	83,400,000	82,900,000
Shares of common stock in treasury (in shares)	14,200,000	14,300,000

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Amount of allowance for credit loss on accounts receivable, classified as current.

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Face amount or stated value per share of common stock.

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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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