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Common Stock Repurchases	3 Months Ended
Common Stock Repurchases	Feb. 29, 2020
Common Stock Repurchases [Abstract]
Common Stock Repurchases	Common Stock Repurchases In January 2020, our Board of Directors increased the total share repurchase authorization from $75.0 million to $250.0 million. We repurchased and retired 0.4 million shares of our common stock for $20.0 million in the three months ended February 29, 2020, and 0.7 million shares for $25.0 million in the three months ended February 28, 2019. The shares were repurchased in both periods as part of our Board of Directors authorized share repurchase program. As of February 29, 2020, there was $230.0 million remaining under the current authorization.