Quarterly report pursuant to Section 13 or 15(d)

Statements Of Condensed Consolidated Financial Position (Parenthetical)

v3.8.0.1
Statements Of Condensed Consolidated Financial Position (Parenthetical) - $ / shares
Mar. 31, 2018
Dec. 31, 2017
Class of Stock [Line Items]    
Preferred stock, par value $ 0 $ 0
Common Stock, Par or Stated Value Per Share $ 0.125 $ 0.125
Common shares, authorized (in shares) 600,000,000 600,000,000
Common shares, issued (in shares) 301,886,794 301,886,794
Common shares, outstanding 297,733,061 297,400,968
Common shares in treasury 4,153,733 4,485,826
Preferred Class A [Member]    
Class of Stock [Line Items]    
Preferred stock, shares authorized (in shares) 3,000,000 3,000,000
Preferred Class B [Member]    
Class of Stock [Line Items]    
Preferred stock, shares authorized (in shares) 4,000,000 4,000,000