Subsequent Event Subsequent Events (Notes)	9 Months Ended
Sep. 30, 2020
Subsequent Events [Abstract]
Subsequent Events [Text Block]	Subsequent EventsOn October 27, 2020, the Company signed an agreement to acquire Affaba & Ferrari Srl, which specializes in the design, development and manufacture of precision caps and closures for food & beverage and industrial product applications, for a purchase price of approximately €84 million. Affaba & Ferrari operates out of a highly automated manufacturing facility and support office located in Borgo San Giovanni, Italy. The transaction is expected to close before the end of 2020, at which time Affaba & Ferrari will become part of TriMas’ Packaging segment. Affaba & Ferrari generated approximately €35 million in revenue in 2019.

The entire disclosure for significant events or transactions that occurred after the balance sheet date through the date the financial statements were issued or the date the financial statements were available to be issued. Examples include: the sale of a capital stock issue, purchase of a business, settlement of litigation, catastrophic loss, significant foreign exchange rate changes, loans to insiders or affiliates, and transactions not in the ordinary course of business.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 855
-URI http://asc.fasb.org/topic&trid=2122774

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 855
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=6842918&loc=SL6314017-165662

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