Quarterly report pursuant to Section 13 or 15(d)

Consolidated Balance Sheets (Parenthetical)

v3.4.0.3
Consolidated Balance Sheets (Parenthetical) - USD ($)
$ in Millions
Mar. 31, 2016
Dec. 31, 2015
Consolidated Balance Sheets [Abstract]    
Allowance for accounts with partners   $ 7.6
Allowance for value added tax receivable $ 4.7 $ 4.2
Preferred stock, shares authorized 500,000  
Preferred stock, par value $ 25  
Common stock, shares authorized 100,000,000 100,000,000
Common stock, shares issued 66,041,338 66,041,338
Treasury Stock Shares 7,545,977 7,514,169