Stock-Based Compensation Plans (Schedule of Weighted-Average Assumptions) (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Employee Stock Option Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Dividend yield	2.60%	2.70%	2.70%
Expected volatility	44.70%	45.50%	41.60%
Risk-free interest rate	1.30%	0.80%	1.40%
Expected term of options (in years)	4 years 0 months 0 days	4 years 1 month 6 days	4 years 2 months 12 days
Weighted-average grant-date fair value	$ 7	$ 6	$ 8
Non-Employee Director Stock Option Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Dividend yield	2.70%	2.60%	2.70%
Expected volatility	45.90%	44.50%	40.50%
Risk-free interest rate	1.90%	1.70%	3.20%
Expected term of options (in years)	7 years 0 months 0 days	6 years 9 months 18 days	6 years 6 months
Weighted-average grant-date fair value	$ 9	$ 8	$ 11