Basis of Presentation (Tables)

6 Months Ended

Jun. 30, 2017

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Schedule of effects of the change in presentation

Adoption of ASU No. 2016-09. The Corporation adopted ASU No. 2016-09 on July 1, 2016 with an effective date of January 1, 2016, which resulted in reclassifications of $2.3 million and $5.9 million from additional paid-in capital to provision for income taxes, representing excess tax benefits previously recognized in additional paid-in-capital during the three and six months ended June 30, 2016, respectively.

Adoption of the standard impacted the Corporation’s previously reported results as follows:

	Three Months Ended						Six Months Ended
	June 30, 2016						June 30, 2016
($ In Millions except per share data)	As Reported			As Adjusted			As Reported			As Adjusted
Provision for Income Taxes	$	134.0		$	131.7		$	251.4		$	245.5
Net Income	260.7			263.0			502.5			508.4
Earnings Allocated to Participating Securities	4.7			4.8			8.8			8.9
Net Income Applicable to Common Stock	254.9			257.2			490.8			496.7
Effective Tax Rate	33.9		%	33.4		%	33.3		%	32.6		%
Basic Earnings per Share	$	1.10		$	1.11		$	2.11		$	2.14
Diluted Earnings per Share	1.09			1.10			2.10			2.13
Diluted Weighted Average Shares Outstanding (000s)	229,197			229,280			229,588			229,539
							As of June 30, 2016
							As Reported			As Adjusted
Additional Paid-In Capital							$	1,040.2		$	1,034.3
Retained Earnings							8,566.3			8,572.2