Business Combinations, Divestitures, Discontinued Operations and Assets and Liabilities Held for Sale - Summary of Estimated Fair Values of Assets Acquired and Liabilities Assumed (Detail) - USD ($) $ in Millions		Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Assets:
Goodwill		$ 3,649.5	$ 3,494.4	$ 2,414.0
Lehigh West Region
Assets:
Inventories		90.9
Property, plant and equipment	[1]	847.5
Intangible assets, other than goodwill		431.5
Goodwill		1,222.3
Other assets		54.4
Total Assets		2,646.6
Liabilities:
Asset retirement obligations		247.5
Operating and finance lease liabilities		57.5
Asset retirement obligations and other liabilities assumed		77.0
Total Liabilities		382.0
Total Consideration		$ 2,264.6

[1] Includes mineral reserves of $332.0 million.