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Commitments and contingencies (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022
Contingencies
Cayman Water Retail Operations, Percentage Of Revenue	24.00%	32.00%
Cayman Water Retail Operations, Percentage Of Gross Profit	40.00%	46.00%
Percentage of revenue collected paid	7.50%
Consolidated Water Bahamas [Member]
Contingencies
Accounts Receivable, Net	$ 16.6		$ 16.3

X

- Definition

Represents the percentage of consolidated gross profit from Cayman Water retail operations.

+ References

No definition available.

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X

- Definition

Represents the percentage of consolidated revenue from Cayman Water retail operations.

+ References

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- Definition

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X

- Definition

Amount, after allowance for credit loss, of right to consideration from customer for product sold and service rendered in normal course of business.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 954
-SubTopic 310
-Section 45
-Paragraph 1
-URI https://asc.fasb.org/extlink&oid=126942793&loc=d3e3073-115593

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(5))
-URI https://asc.fasb.org/extlink&oid=126734703&loc=d3e572229-122910

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X

- Definition

Percentage of remaining performance obligation to total remaining performance obligation not recognized as revenue.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 13
-Subparagraph (b)(1)
-URI https://asc.fasb.org/extlink&oid=126920106&loc=SL49130556-203045

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