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Segments - Holdings - Selected Financial Information by Reportable Operating Segment (Detail) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2024 | Jun. 30, 2023 | Jun. 30, 2024 | Jun. 30, 2023
Segment Reporting Information [Line Items] |  |  |  |  |
Revenues |  | $ 734.2 | $ 942.3 | $ 1,313.4 | $ 1,553.0
Adjusted EBITDA |  | 142.1 | 231.5 | 212.8 | 317.7
Capital expenditures |  | 23.7 | 28.3 | 47.2 | 54.6
Operating Segments |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Adjusted EBITDA |  | 142.1 | 231.5 | 212.8 | 317.7
Eliminations |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Revenues |  | (3.1) | (4.4) | (5.2) | (7.0)
U.S. Operating Segment |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Revenues | [1] | 572.0 | 734.9 | 1,029.0 | 1,214.0
U.S. Operating Segment | Operating Segments |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Revenues |  | 575.1 | 739.3 | 1,034.2 | 1,221.0
Adjusted EBITDA |  | 108.8 | 180.8 | 157.9 | 244.2
Capital expenditures |  | 16.1 | 21.1 | 34.2 | 43.8
International Operating Segment |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Revenues |  | 162.2 | 207.4 | 284.4 | 339.0
International Operating Segment | Operating Segments |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Revenues |  | 162.2 | 207.4 | 284.4 | 339.0
Adjusted EBITDA |  | 33.3 | 50.7 | 54.9 | 73.5
Capital expenditures |  | $ 7.6 | $ 7.2 | $ 13.0 | $ 10.8
[1] | U.S. segment revenue excludes intercompany transactions with the international operating segment. See Note 16 for the amount of intercompany eliminations for the periods presented.

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