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Unconsolidated Affiliates - Schedule of Related Party Transactions and Balances Outstanding With Our Related Parties (Detail) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2025 | Dec. 31, 2024 | Dec. 31, 2023
Related Party Transactions [Abstract] |  |  |  |
Operating revenues from related parties |  | $ 66.4 | $ 59.2 | $ 60.5
Amounts paid to related parties | [1] | 38.0 | 48.4 | 46.3
Distributions received from related parties, net |  | 23.1 | 38.4 | $ 20.9
Outstanding advances/loans to related parties |  | 1.9 | 1.9 |
Trade accounts receivable from related parties |  | 11.1 | 10.0 |
Total amounts receivable from related parties |  | 13.0 | 11.9 |
Amounts payable to related parties |  | $ 0.6 | $ 2.5 |
[1] | Excludes amounts paid to our unconsolidated joint ventures related to loans, advancements and other capital investments.

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- Definition Long-Term advances receivable from a party that is affiliated with the reporting entity by means of direct or indirect ownership. This does not include advances to clients. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 850 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147483326/850-10-50-2 + Details
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