Share-Based Compensation (Tables)

3 Months Ended

Mar. 31, 2015

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

Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]

The calculated fair value of options granted and major assumptions used in the model at the date of grant are listed below for the three months ended March 31, 2015:



	Stock Option Assumptions
Weighted-average grant-date fair value of awards granted during the period	$	6.82
Weighted-average risk-free interest rate	1.38		%
Weighted-average expected price volatility	36.8		%
Expected dividend yield	0.37		%
Expected term in years at the date of grant	4.5

Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block]

Stock option transactions under the terms of the LTSIP are summarized below:



	Options Outstanding		Weighted- Average Exercise Price		Weighted-Average Remaining Contractual Term	Aggregate Intrinsic Value
			(per share)		(in years)	(in millions)
Outstanding at December 31, 2014	1,996,215		$	28.60
Granted	425,877		21.69
Forfeited	(2,817	)	31.31
Canceled	(60,000	)	27.84
Outstanding at March 31, 2015	2,359,275		$	27.37	3.72	$	0.2
Options Exercisable at March 31, 2015	1,673,563		$	28.24	2.63	$	0.2
Unvested Options at March 31, 2015	685,712		$	25.23	6.37	$	—

Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units Activity [Table Text Block]

Transactions involving restricted shares under the terms of the LTSIP are summarized below:



	Restricted Shares Outstanding		Weighted- Average Grant-Date Fair Value
			(per share)
Unvested balance at December 31, 2014	1,426,453		$	31.02
Granted	1,359,488		21.67
Vested	(584,111	)	30.88
Forfeited	(61,144	)	28.48
Unvested balance at March 31, 2015	2,140,686		$	25.19

Performance Share Units

The performance share units' cash payouts are dependent upon the Company’s total shareholder return compared to a group of its peers over a three-year period. The awards are denominated in share units but have historically been delivered in cash at the end of the performance period. Beginning with awards granted in 2015, the Company has the option to settle earned awards in cash or shares of common stock under the Company's LTSIP; however, as of March 31, 2015, the Company expects to settle all awards in cash. The weighted average grant-date fair value of the performance share units was $21.69 per share and $31.69 per share for the three months ended March 31, 2015 and 2014, respectively. As of March 31, 2015, $3.1 million of unrecognized compensation cost, representing the fair market value of performance shares granted, is expected to be recognized over a weighted-average vesting period of 2.29 years.

Transactions involving performance share units under the terms of the CIP are summarized below:



	Performance Share Units Outstanding		Weighted- Average Grant-Date Fair Value
Unvested balance at December 31, 2014	552,209		$	30.85
Granted	234,085		21.69
Vested and paid out	(131,665	)	30.77
Canceled ⁽¹⁾	(14,612	)	30.77
Forfeited	(6,792	)	28.29
Unvested balance at March 31, 2015	633,225		$	27.52