Stock-Based Compensation (Tables)

6 Months Ended

Jun. 30, 2011

Share-based Compensation [Abstract]

Summary of Restricted Stock Award Activity

	Number of Shares
	(In thousands of shares)
Shares outstanding at January 1, 2011	4,297
Shares granted(a)	886
Shares vested(b)	(1,559	)
Shares forfeited	(53	)
Shares outstanding at June 30, 2011	3,571

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(a) Weighted-average grant-date fair value of $37.04 per share and a weighted-average requisite service period of 2.5 years. The awards with market conditions included an expected volatility of 48% in the Monte Carlo simulation used to measure grant date fair value.

(b) Fair value on vesting date of $68.0 million.