Share-Based Compensation Level 1 (Notes)

6 Months Ended

Jun. 30, 2011

Share-based Compensation [Abstract]

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

Share-Based Compensation

Stock Benefit Plans

We utilize the Black-Scholes option valuation model for estimating the fair value of our stock options. This model allows the use of a range of assumptions related to volatility, the risk-free interest rate, the expected life, and the dividend yield. The fair values of our stock options are calculated using the following weighted average assumptions for the six months ended June 30, 2011:

	Six Months Ended
Assumptions	June 30, 2011
Dividend yield	2.4	%
Expected volatility	38.4	%
Risk-free interest rate	2.4	%
Expected holding period (in years)	5.0

Stock Options

The following table sets forth stock option activity for the six months ended June 30, 2011:

	Options		Weighted-Average Exercise Price
Outstanding at December 31, 2010	12,312,783		$	7.53
Granted	2,394,430		9.09
Exercised	(1,055,758	)	6.73
Cancelled	(94,857	)	5.32
Outstanding at June 30, 2011	13,556,598		$	7.88
Exercisable at June 30, 2011	8,369,351		$	8.15

As of June 30, 2011, the unrecognized compensation expense related to stock options of $9.1 million is expected to be recognized over a weighted average period of 1.5 years.

Restricted Shares

Restricted share activity for the six months ended June 30, 2011 was as follows:

	Restricted shares		Weighted-Average Grant-Date Fair Value
Nonvested restricted shares at December 31, 2010	1,167,273		$	6.35
Granted	538,620		9.13
Vested	(540,723	)	6.58
Nonvested restricted shares at June 30, 2011	1,165,170		$	7.53

As of June 30, 2011, the unrecognized compensation expense related to restricted shares of $7.2 million is expected to be recognized over a weighted average period of 1.5 years.