Stock-Based Compensation Plans (Assumptions Used In The Black-Scholes Option-Pricing Model) (Details)	12 Months Ended
	Dec. 31, 2011 years	Dec. 31, 2010 years	Dec. 31, 2009 years
Stock-Based Compensation Plans [Abstract]
Dividend yield	2.20%	4.40%	6.60%
Expected volatility	42.40%	41.60%	35.40%
Risk-free interest rate	2.70%	2.80%	2.20%
Expected option term (years)	6.0	6.0	6.0