v3.23.1

Description of the Company and Basis of Presentation (Details) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Sep. 30, 2023 USD ($) $ / shares shares	Mar. 31, 2023 USD ($) segment $ / shares	Mar. 31, 2023 USD ($) segment $ / shares	Sep. 30, 2022 $ / shares
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Number of reportable segments \| segment		2	2
Business Acquisition [Line Items]
Common stock, par value (in dollars per share)		$ 0.01	$ 0.01	$ 0.01
Merger related costs \| $		$ 10,040	$ 10,240
Subsequent Event
Business Acquisition [Line Items]
Termination fee \| $	$ 225,000
Xylem Inc. \| Common Stock \| Subsequent Event
Business Acquisition [Line Items]
Acquirer shares issued per acquiree share (in shares) \| shares	0.48
Shares exchanged, common stock, par value	$ 0.01
Xylem Inc. \| Legacy Evoqua Water Technologies \| Subsequent Event
Business Acquisition [Line Items]
Percentage of equity interests, of acquiree, after transaction	25.00%
Xylem Inc. \| Legacy Xylem \| Subsequent Event
Business Acquisition [Line Items]
Percentage of voting interests acquired	75.00%
Xylem Inc. \| Evoqua Water Technologies \| Subsequent Event
Business Acquisition [Line Items]
Common stock, par value (in dollars per share)	$ 0.01

Business Acquisition, Percentage of Equity Interests, Acquiree, After Transaction

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Business Combination, Consideration Transferred, Equity Interests Issued and Issuable, Common Stock, Par Value

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Business Combination, Consideration Transferred, Equity Interests Issued and Issuable, Entity Shares Issued Per Acquiree Share

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Business Combination Termination Fee

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Percentage of voting equity interests acquired at the acquisition date in the business combination.

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-Topic 805
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Face amount or stated value per share of common stock.

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Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements.

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Evoqua Water Technologies Corp. 10-Q