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v3.22.2.2

Goodwill - Changes in Goodwill (Detail) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2022 | Sep. 30, 2022
Goodwill [Line Items] |  |
Balance at January 1, 2022 |  | $ 3,494.4
Acquisitions |  | 3.7
Goodwill Increased | $ 171.4 | 293.8
Divestitures |  | (159.7)
Goodwill reclassified from assets held for sale |  | 8.2
Balance at September 30, 2022 | 3,640.4 | 3,640.4
East Group |  |
Goodwill [Line Items] |  |
Balance at January 1, 2022 |  | 759.4
Acquisitions |  | 0.0
Goodwill Increased |  | 5.0
Divestitures |  | 0.0
Goodwill reclassified from assets held for sale |  | 0.0
Balance at September 30, 2022 | 764.4 | 764.4
West Group |  |
Goodwill [Line Items] |  |
Balance at January 1, 2022 |  | 2,735.0
Acquisitions |  | 3.7
Goodwill Increased |  | 288.8
Divestitures |  | (159.7)
Goodwill reclassified from assets held for sale |  | 8.2
Balance at September 30, 2022 | $ 2,876.0 | $ 2,876.0

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