Earnings Per Share (Tables)

9 Months Ended

Sep. 30, 2014

Earnings Per Share [Abstract]

Components of basic and diluted shares used in EPS

A reconciliation of the components of basic and diluted shares used in the EPS calculation follows:

	Three Months Ended		Nine Months Ended
	September 30,		September 30,
	2014	2013	2014	2013
	(in millions)
Weighted-average basic common shares outstanding	180.1	179.3	180.0	179.2
Potential number of shares issuable upon exercise of in-the-money stock options under the Long-term Stock Incentive Plan	0.5	0.2	0.4	0.2
Average diluted common shares outstanding	180.6	179.5	180.4	179.4