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Earnings Per Share (Schedule Of Earnings Per Share) (Details) (USD $)
In Thousands, except Per Share data
3 Months Ended9 Months Ended
Sep. 30, 2011
Sep. 30, 2010
Sep. 30, 2011
Sep. 30, 2010
Earnings Per Share [Abstract]    
Earnings attributable to HollyFrontier stockholders$ 523,088$ 51,177$ 800,017$ 89,245
Average number of shares of common stock outstanding209,583106,420141,353106,344
Effect of dilutive stock options, variable restricted shares and performance share units996[1]714[1]739[1]718[1]
Average number of shares of common stock outstanding assuming dilution210,579107,134142,092107,062
Basic earnings per share$ 2.50$ 0.48$ 5.66$ 0.84
Diluted earnings per share$ 2.48$ 0.48$ 5.63$ 0.83
Excluded anti-dilutive restricted and performance share units of:39 179 
[1]Excludes anti-dilutive restricted and performance share units of: