Consolidated Balance Sheets (Parenthetical) (USD $)	Dec. 31, 2011	Dec. 31, 2010
Shareholders' Equity
Preferred Stock, Par Value Per Share (in dollars per share)	$ 1.00	$ 1.00
Preferred Stock - Shares Authorized (in shares)	4,000,000	4,000,000
Preferred Stock - Shares Issued (in shares)	0	0
Common Stock, Par Value Per Share (in dollars per share)	$ 3.333	$ 3.333
Common Stock - Shares Authorized (in shares)	250,000,000	250,000,000
Common Stock - Shares Issued (in shares)	196,656,846	195,440,048
Treasury Stock, Shares (in shares)	18,736,520	18,650,064