Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Millions	Dec. 31, 2015	Dec. 31, 2014
Common stock, par value (usd per share)	$ 0.01	$ 0.01
Common stock, shares issued	48,908,227	48,683,493
Common stock, shares outstanding	48,908,227	48,683,493
Treasury stock, shares	9,901,739	10,126,473
Allowance for Doubtful Accounts [Member]
Allowances for receivables	$ 17.6	$ 20.3

Face amount or stated value per share of common stock.

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