Annual report pursuant to Section 13 and 15(d)

Consolidated Balance Sheets (Parenthetical)

v3.20.1
Consolidated Balance Sheets (Parenthetical) - USD ($)
$ in Millions
Dec. 31, 2019
Dec. 31, 2018
Consolidated Balance Sheets [Abstract]    
Allowance for accounts with joint venture owners $ 0.5 $ 0.5
Allowance for value added tax and other receivables $ 1.0 $ 2.0
Preferred stock, shares authorized 500,000 500,000
Preferred stock, par value $ 25 $ 25
Preferred stock, shares issued 0 0
Common stock, par value $ 0.10 $ 0.10
Common stock, shares authorized 100,000,000 100,000,000
Common stock, shares issued 67,673,787 67,167,994
Common stock, shares outstanding 58,024,571 59,595,742
Treasury stock, shares 9,649,216 7,572,251