Earnings Per Share (Tables)

6 Months Ended

Jun. 30, 2014

Earnings Per Share [Abstract]

Components of basic and diluted shares used in EPS

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

	Three Months Ended		Six Months Ended
	June 30,		June 30,
	2014	2013	2014	2013
	(in millions)
Weighted-average basic common shares outstanding	180.1	179.3	179.9	179.1
Potential number of shares issuable upon exercise of in-the-money stock options under the Long-term Stock Incentive Plan	—	0.2	—	0.3
Average diluted common shares outstanding	180.1	179.5	179.9	179.4