Share-based Compensation Plans (Tables)

6 Months Ended

Jun. 30, 2013

Share-based compensation plans [Abstract]

Fair value of options calculation assumptions [Table Text Block]

			Three Months
			Ended June 30,
Options Granted			2012
Number of shares underlying options, in thousands						207
Weighted-average exercise price per share			$			22.39
Assumptions used to estimate fair value
	Expected dividend yield
		Weighted-average(a):				1.8%
	Expected volatility(b):
		Weighted-average				40%
	Risk-free interest rate(c):
		Weighted-average				0.7%
		Range		0.5%	–	0.9%
	Expected term in years(d):
		Weighted-average				4.3
		Range		3.3	–	5.3
Weighted-average fair value estimates at grant date:
	In millions		$			1.3
	Fair value per share		$			6.29

Nonvested share activity [Table Text Block]

Nonvested Share Activity
	Number of Shares					Weighted-Average
	2013	2005	Directors’			Grant-Date
(In thousands of shares, except per share amounts)	Plan	Plan	Plan	Total		Fair Value(a)
Balance as of December 31, 2012	-	407.9	23.0	430.9	$	23.19
Granted	468.2	-	-	468.2		26.01
Cancelled awards	(6.8)	(36.0)	-	(42.8)		23.75
Vested	-	(22.7)	-	(22.7)		23.15
Balance as of June 30, 2013	461.4	349.2	23.0	833.6	$	24.75