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Subsequent Events	6 Months Ended
Subsequent Events	Jun. 30, 2012
Subsequent Events [Abstract]
SUBSEQUENT EVENTS	SUBSEQUENT EVENTS On July 16, 2012, we repaid our $175.0 million 6.00% senior notes on the maturity date. On July 19, 2012, we issued $250.0 million of fixed rate senior notes that mature on August 1, 2022 and bear interest at 3.00%. The net proceeds from this note offering after issuance discounts, underwriting fees and other costs were approximately $244.7 million.