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Subsequent Event	3 Months Ended
Subsequent Event	Mar. 31, 2018
Subsequent Events [Abstract]
Subsequent Event	Subsequent Event: During the second quarter of 2018, we obtained board approval and signed an agreement with Elgin SA, a private Brazilian company, for the sale of our South America business. The sale is subject to Brazilian antitrust approval and is expected to close later this year. We expect to take a non-cash charge of approximately $30 million during the second quarter of 2018 related to the sale of this business.