Subsequent Event Subsequent Event

12 Months Ended

Dec. 31, 2018

Subsequent Events [Abstract]

Subsequent Events [Text Block]

SUBSEQUENT EVENTS

On January 28, 2019, the Company and Versum Materials, Inc., a leading specialty materials supplier to the semiconductor industry, announced that they had entered into an Agreement and Plan of Merger, dated as of January 27, 2019, pursuant to which they agreed to combine in a merger of equals. Under the terms of the agreement, Versum will merge with and into Entegris, with Entegris surviving and continuing as the surviving corporation, and Versum stockholders will receive 1.120 shares of Company common stock for each existing Versum share.

In connection with the signing of the agreement, the Company entered into a First Amendment to the Credit Agreement, dated as of February 8, 2019, pursuant to which certain covenants were amended in order to permit the assumption of existing indebtedness of Versum upon closing of the merger. On February 8, 2019, the Company also terminated with no cost its $987 million incremental term loan commitment from Morgan Stanley Senior Funding, Inc., which was in place to backstop the credit agreement amendment.