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Business Combinations, Divestitures and Discontinued Operations - Summary of Estimated Fair Values of Assets Acquired and Liabilities Assumed (Detail) - USD ($) $ in Millions | Jun. 30, 2022 | Dec. 31, 2021 | Oct. 01, 2021
--- | --- | --- | ---
Assets: |  |  |
Goodwill | $ 3,400.5 | $ 3,494.4 |
Lehigh West Region |  |  |
Assets: |  |  |
Inventories |  |  | $ 91.9
Property, plant and equipment |  |  | 849.9
Intangible assets, other than goodwill |  |  | 551.0
Goodwill |  |  | 1,041.8
Other assets |  |  | 54.6
Total assets |  |  | 2,589.2
Liabilities: |  |  |
Asset retirement obligations |  |  | 225.5
Operating and finance lease liabilities |  |  | 57.5
Other liabilities |  |  | 41.6
Total liabilities |  |  | 324.6
Total consideration |  |  | $ 2,264.6

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