Consolidated Statements of Members' Equity (FY) (Parenthetical) - USD ($) $ in Millions		12 Months Ended
Oct. 28, 2016	Sep. 30, 2017
OneWater LLC [Member]
Increase (Decrease) in Temporary Equity [Roll Forward]
Issuance costs	$ 2.1	$ 2.1

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

No definition available.

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