Capital Stock (Tables)

3 Months Ended

Mar. 31, 2012

Weighted Average Number of Shares Outstanding Reconciliation [Abstract]

Schedule Of Weighted Average Number Of Shares [Table Text Block]

		Three Months
		Ended March 31,
(In millions)		2012	2011
Weighted-average shares:
	Basic (a)	48.1	47.6
	Effect of dilutive stock options and awards	0.2	0.5
	Diluted	48.3	48.1
Antidilutive stock options and awards excluded from denominator		2.6	2.2