Common Equity (Tables)

9 Months Ended

Sep. 30, 2015

Equity [Abstract]

Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]

Basic and diluted earnings per share for the Company were calculated as follows:

	Three Months Ended September 30,				Nine Months Ended September 30,
(In millions except per share data)	2015		2014		2015		2014
Net Income	$	111.2	$	187.3	$	241.9	$	337.4
Average Common Shares Outstanding
Basic average common shares outstanding	199.7		199.3		199.6		199.1
Effect of dilutive securities:
Contingently issuable shares (performance and restricted stock units)	—		0.9		—		0.8
Diluted average common shares outstanding	199.7		200.2		199.6		199.9
Basic Earnings Per Average Common Share	$	0.55	$	0.94	$	1.21	$	1.69
Diluted Earnings Per Average Common Share	$	0.55	$	0.94	$	1.21	$	1.69
Anti-dilutive shares excluded from earnings per share calculation	—		—		—		—