Earnings Per Share (Tables)

9 Months Ended

Sep. 30, 2014

Earnings Per Share [Abstract]

Schedule of Weighted Average Number of Shares

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

	3 Months Ended		9 Months Ended		12 Months Ended
	September 30,		September 30,		September 30,
	2014	2013	2014	2013	2014	2013
	(in millions)
Weighted-average basic common shares outstanding	175.8	175.5	175.8	175.4	175.7	175.5
Potential number of shares issuable under the Company's LTSIP	0.3	—	0.3	0.7	0.3	0.6
Weighted-average diluted common shares outstanding	176.1	175.5	176.1	176.1	176.0	176.1