Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Allowance for doubtful accounts	$ 0.5	$ 0.6
Limited partners' units, issued	104,646,374	62,991,511
Limited partners' units, outstanding	104,646,374	62,991,511
Preferred units, outstanding (in units)	71,257,445	71,257,445
Preferred units, issued	71,257,445	71,257,445
CMLP
Allowance for doubtful accounts	$ 0.5	$ 0.6

Amount of allowance for credit loss on accounts receivable, classified as current.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 4
-URI https://asc.fasb.org/extlink&oid=123577603&loc=d3e5074-111524

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 20
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
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