Fair Value Information (Policy)	12 Months Ended
Dec. 31, 2011
Fair Value Measurements
Fair Value Level Measurement Policy	Level 1 Fair Values—The fair values of available-for-sale securities are based on quoted market prices in active markets for identical assets. Unrealized losses on these securities were not significant as of December 31, 2011 and 2010 and have been recorded in other comprehensive income until realized. The unrealized losses have not been recognized in earnings because we have both the intent and ability to hold the securities for a period of time sufficient to allow for an anticipated recovery of fair value to the cost of such securities. Level 2 Fair Values—The fair value of the COLI policies is derived from investments in a mix of money market, fixed income and equity funds managed by unrelated fund managers. The fair values of derivatives used to manage interest rate risk and commodity price risk are based on LIBOR rates and interest rate swap curves and NYMEX price quotations, respectively. The fair value of hedging instruments used to manage foreign currency risk is based on published quotations of spot currency rates and forward points, which are converted into implied forward currency rates. Additional information on our use of derivative instruments is contained in Note 15.

Level 1 Fair Values—The fair values of available-for-sale securities are based on quoted market prices in active markets for identical assets. Unrealized losses on these securities were not significant as of December 31, 2011 and 2010 and have been recorded in other comprehensive income until realized. The unrealized losses have not been recognized in earnings because we have both the intent and ability to hold the securities for a period of time sufficient to allow for an anticipated recovery of fair value to the cost of such securities.

Level 2 Fair Values—The fair value of the COLI policies is derived from investments in a mix of money market, fixed income and equity funds managed by unrelated fund managers. The fair values of derivatives used to manage interest rate risk and commodity price risk are based on LIBOR rates and interest rate swap curves and NYMEX price quotations, respectively. The fair value of hedging instruments used to manage foreign currency risk is based on published quotations of spot currency rates and forward points, which are converted into implied forward currency rates. Additional information on our use of derivative instruments is contained in Note 15.