CONSOLIDATED STATEMENT OF STOCKHOLDERS' EQUITY (Unaudited) (USD $)
In Millions
Common Stock [Member]
Additional Paid-In Capital [Member]
Treasury Stock [Member]
Retained Earnings [Member]
Accumulated Other Comprehensive Income [Member]
Total
Balance at Dec. 31, 2013 $ 0.4 $ 70.4 $ (3.6) $ 452.5 $ 34.5 $ 554.2
Dividends on common stock       (20.2)   (20.2)
Stock options exercised   2.0 0.1     2.1
Income tax deficiency from equity awards   (0.2)       (0.2)
Stock-based compensation   1.2       1.2
Comprehensive income (loss)       50.2 (15.0) 35.2
Balance at Mar. 31, 2014 $ 0.4 $ 73.4 $ (3.5) $ 482.5 $ 19.5 $ 572.3