PARENTHETICAL DATA TO THE CONSOLIDATED BALANCE SHEETS (USD $) In Millions, except Share data, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Allowance for doubtful accounts	$ 0	$ 1
Stockholders' Equity:
Preferred Stock, par value	$ 1.00	$ 1.00
Preferred stock, shares authorized	5,000,000	5,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value	$ 1.00	$ 1.00
Common stock, shares authorized	100,000,000	100,000,000
Common stock, shares issued	70,376,543	75,733,044
Treasury Stock (common) at cost	0	4,783,494