Stock-Based Compensation (Tables)

3 Months Ended

Mar. 31, 2015

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Schedule of Compensation Cost for Share-based Payment Arrangements, Allocation of Share-based Compensation Costs by Plan [Table Text Block]

The following table summarizes the Company's pre-tax compensation expense and related income tax benefit during the three months ended March 31, 2015 and 2014 related to the Company's performance units and restricted stock.



	Three Months Ended March 31,
(In millions)	2015		2014
Performance units
Total shareholder return	$	1.9	$	2.0
Earnings per share	0.5		1.7
Total performance units	2.4		3.7
Restricted stock	—		0.1
Total compensation expense	2.4		3.8
Less: Amount paid by unconsolidated affiliates	0.3		1.2
Net compensation expense	$	2.1	$	2.6
Income tax benefit	$	0.8	$	1.0

Disclosure of Share-based Compensation Arrangements by Share-based Payment Award [Table Text Block]

The following table summarizes the activity of the Company's stock-based compensation during the three months ended March 31, 2015.



	Units/Shares	Fair Value
Grants
Performance units (Total shareholder return)	264,454	$	31.02
Performance units (Earnings per share)	88,156	$	33.99
Conversions
Performance units (Total shareholder return) (A)	336,147	N/A
Performance units (Earnings per share) (A)	111,950	N/A


(A)	Performance units were converted based on a payout ratio of 29 percent of the target number of performance units granted in February 2012 and are included in the 80,781 shares of common stock issued during the three months ended March 31, 2015 as discussed above.

- Definition

Tabular disclosure of components of a stock option or other award plan under which equity-based compensation is awarded to employees, typically comprised of the amount of unearned compensation (deferred compensation cost), compensation expense, and changes in the quantity and fair value of the shares (or other type of equity) granted, exercised, forfeited, and issued and outstanding pertaining to that plan. Disclosure may also include nature and general terms of such arrangements that existed during the period and potential effects of those arrangements on shareholders, effect of compensation cost arising from equity-based payment arrangements on the income statement, method of estimating the fair value of the goods or services received, or the fair value of the equity instruments granted, during the period, cash flow effects resulting from equity-based payment arrangements and, for registrants that accelerate vesting of out of the money share options, reasons for the decision to accelerate.

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