Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Millions	Jun. 30, 2016	Dec. 31, 2015
Consolidated Balance Sheets [Abstract]
Allowance for value added tax receivable	$ 4.8	$ 4.2
Preferred stock, shares authorized	500,000
Preferred stock, par value	$ 25
Common stock, par value	$ 0.10
Common stock, shares authorized	100,000,000
Common stock, shares issued	65,941,338	66,041,338
Treasury Stock Shares	7,545,978	7,514,169