Capital Stock (Tables)

12 Months Ended

Dec. 31, 2014

Equity [Abstract]

Stock Repurchases Pursuant To Board Of Director Authorizations

The remaining repurchases were made pursuant to the following authorizations (in millions of shares):

	Shares Repurchased			Authorization Remaining at December 31, 2014
Board of Directors’ Authorization	2014	2013	2012
1997 Authorization	3.2	—	4.3	—
2007 Authorization	5.8	7.7	2.2	0.9
2014 Authorization	—	—	—	20.0
Total	9.0	7.7	6.5	20.9