Share-Based Compensation (Tables)

3 Months Ended

Mar. 31, 2014

Share-based Compensation [Abstract]

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

The fair values of our stock options are calculated using the following weighted average assumptions for the three months ended March 31, 2014:

	Three Months Ended
Assumptions	March 31, 2014
Dividend yield	1.8	%
Expected volatility	27.1	%
Risk-free interest rate	1.1	%
Expected holding period (in years)	4.0

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

The following table sets forth stock option activity for the three months ended March 31, 2014:

	Options		Weighted-Average Exercise Price
Outstanding at December 31, 2013	13,319,750		$	9.84
Granted	2,495,850		$	17.41
Exercised	(964,403	)	$	8.82
Outstanding at March 31, 2014	14,851,197		$	11.18
Exercisable at March 31, 2014	10,339,379		$	9.14

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

Restricted share activity for the three months ended March 31, 2014 was as follows:

	Restricted shares		Weighted-Average Grant-Date Fair Value
Nonvested restricted shares at December 31, 2013	1,183,229		$	11.81
Granted	344,570		$	17.41
Vested	(187,549	)	$	11.44
Nonvested restricted shares at March 31, 2014	1,340,250		$	13.30