Share Based Compensation (Tables)

12 Months Ended

Dec. 31, 2012

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]

	Year Ended December 31,
	2012	2011	2010
Risk-free interest rate	1.1%	2.1%	2.3%
Dividend yield	5.7%	6.1%	7.6%
Historical volatility factor	0.377	0.366	0.357
Weighted-average expected life	5 years	5 years	5 years

Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block]

	Options (000s)		Weighted Average Exercise Price
Outstanding January 1, 2012	3,311		$33.37
Granted	257		34.77
Exercised	(841	)	27.21
Expired	(65	)	31.33
Outstanding December 31, 2012	2,662		$35.50
Exercisable at December 31, 2012	1,974		$36.14

Schedule of Nonvested Share Activity [Table Text Block]

	Shares (000s)		Weighted Avg. Grant Date Fair value
Nonvested at January 1, 2012	745		$29.86
Granted	417		34.61
Vested	(312	)	23.99
Forfeited	(1	)	33.93
Nonvested at December 31, 2012	849		$34.35