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Partners’ Deficit - Cash Distributions (Details) - Cash Distributions - USD ($) $ / shares in Units, $ in Millions	3 Months Ended					12 Months Ended
	Mar. 31, 2026	Dec. 31, 2025	Sep. 30, 2025	Jun. 30, 2025	Mar. 31, 2025	Dec. 31, 2025
Cash Distributions
Total distribution	$ 67.1	$ 64.8	$ 64.8	$ 62.3	$ 62.4	$ 254.3
Amount Paid to Phantom and Restricted Unitholders
Cash Distributions
Total distribution	$ 0.5	$ 0.4	$ 0.4	$ 0.6	$ 0.7	$ 2.1
Limited partner | Common Unitholders
Cash Distributions
Distribution per limited partner unit (in dollars per share)	$ 0.525	$ 0.525	$ 0.525	$ 0.525	$ 0.525	$ 2.100
Total distribution	$ 66.6	$ 64.4	$ 64.4	$ 61.7	$ 61.7	$ 252.2

X

- Definition

Amount of cash distribution paid to unit-holder of limited liability company (LLC).

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 272
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483014/272-10-45-1

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- Definition

Per unit of ownership amount of cash distributions paid to unit-holder of a limited partnership (LP).

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 5
-Subparagraph (SAB Topic 4.F)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480008/505-10-S99-5

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section S45
-Paragraph 8
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480100/505-10-S45-8

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