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Subsequent Event	12 Months Ended
Subsequent Event	Dec. 31, 2014
Subsequent Events [Abstract]
Subsequent Event	SUBSEQUENT EVENT On February 9, 2015, we commenced a "modified Dutch auction" tender offer to purchase up to 3,652,968 shares of our common stock at a price per share of not less than $54.75 and not greater than $58.50, for an aggregate purchase price of up to $200.0 million. See Note 14 for further information.