Asset retirement obligations and other liabilities purchase accounting adjustments.

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Business acquisition effective date of acquisition month and year.

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Business combination number of California ready mix operations.

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Cash used for operating and investing activities for discontinued operations.

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Amount of intangible assets, excluding goodwill, acquired at the acquisition date.

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Amount of capital expenditure attributable to discontinued operations.

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Amount of consideration received or receivable for the disposal of assets and liabilities, including discontinued operation.

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Amount of increase (decrease) to assets, excluding financial assets and goodwill, lacking physical substance with a finite life for purchase accounting adjustments.

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Amount of gain (loss) from sale and disposal of integrated set of activities and assets capable of being conducted and managed for purpose of providing return in form of dividend, lower cost, or other economic benefit to investor, owner, member and participant.

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Amount of increase (decrease) from adjustments after acquisition date under purchase accounting of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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The net result for the period of deducting operating expenses from operating revenues.

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The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price.

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The cash inflow associated with the amount received from the sale of a portion of the company's business, for example a segment, division, branch or other business, during the period.

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The cash inflow associated with the sale of equity method investments, which are investments in joint ventures and entities in which the entity has an equity ownership interest normally of 20 to 50 percent and exercises significant influence.

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Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

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Business Combinations, Divestitures, Discontinued Operations and Assets and Liabilities Held for Sale - Additional Information (Detail) $ in Millions			1 Months Ended			6 Months Ended	12 Months Ended
	Jul. 15, 2022 USD ($)	Apr. 01, 2022 USD ($)	Oct. 31, 2021 USD ($)	Jul. 31, 2021	Apr. 30, 2021	Jun. 30, 2022 USD ($) Plant	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)	Aug. 09, 2022 USD ($)
Business Acquisition [Line Items]
Goodwill Increased							$ 303.0
Capital expenditures							15.5
Business combination number of California ready mix operations \| Plant						14
Interest payable	$ 15.0
Cash used for operating and investing activities for discontinued operations							202.8	$ 11.9
Proceeds from divestitures							249.9
Acquisition and integration expenses								57.9
Total Revenues							6,160.7	5,414.0	$ 4,729.9
Revenues						$ 235.0				$ 350.0
Earnings from operations							1,206.7	973.8	1,005.4
Colorado and Central Texas
Business Acquisition [Line Items]
Pretax gain		$ 151.9					151.9
Tiller Corporation
Business Acquisition [Line Items]
Business combination, effective date					2021-04
Lehigh West Region
Business Acquisition [Line Items]
Business combination, effective date			2021-10
Intangible assets fair value adjustment							119.5
Goodwill Increased							233.1
Cash transferred in business combination			$ 2,260.0
Intangible assets, other than goodwill							431.5
Asset retirement obligations and other liabilities assumed							115.7
Lehigh West Region \| Pro Forma
Business Acquisition [Line Items]
Acquisition and integration expenses									$ 46.8
Southern Crushed Concrete
Business Acquisition [Line Items]
Business combination, effective date				2021-07
Intangible assets fair value adjustment							64.0
Goodwill Increased							$ 64.7
Lehigh West Region, SCC and Tiller
Business Acquisition [Line Items]
Total Revenues								338.6
Earnings from operations								$ 12.1