XML 83 R60.htm IDEA: XBRL DOCUMENT

Stock-Based Compensation (Schedule Of Restricted Stock Awards Stock Options And SAR) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Stock-Based Compensation [Abstract]
Recognized stock compensation expense	$ 10.0	$ 10.8	$ 9.2
Capitalized stock compensation cost for our oil and natural gas properties	2.5	2.7	2.1
Tax benefit on stock based compensation	$ 3.9	$ 4.1	$ 2.6

Equity-based compensation cost during the period with respect to the award, which will be recognized in income (as well as the total recognized tax benefit) or capitalized as part of the cost of an asset.

+ References+ Details