Acquisitions and Divestitures (Tables)

12 Months Ended

Dec. 31, 2019

Business Acquisition [Line Items]

Acquisition and divestiture activity

The Company's acquisition and divestiture activities are summarized below:

	Year Ended December 31,
	2019		2018		2017
	(in millions)
Acquisitions:
Purchase price	$	39.2	$	334.1	$	63.0
Net cash paid	$	32.9	$	333.2	$	47.5
Goodwill recorded	$	12.6	$	120.9	$	25.0

ACG Materials

Business Acquisition [Line Items]

Final purchase price allocation

The following table represents our final purchase price allocation (in millions):

Accounts receivable	$	23.8
Inventories	12.5
Property, plant, and equipment	77.8
Mineral reserves	137.3
Goodwill	105.5
Other assets	6.3
Accounts payable	(10.2		)
Accrued and other liabilities	(14.5		)
Capital lease obligations	(8.3		)
Deferred income taxes	(21.1		)
Total net assets acquired	$	309.1

Pro-forma consolidated and combined operating results

The following table represents the unaudited pro-forma consolidated operating results of the Company as if the ACG acquisition had been completed on January 1, 2017. The unaudited pro-forma information makes certain adjustments to depreciation, depletion, and amortization expense to reflect the fair value recognized in the purchase price allocation, as well as to align ACG's capital structure and debt financing with that of the Company at the acquisition date. As a measure of unaudited pro-forma earnings, we have presented income before income taxes because our effective tax rates for 2018 and 2017 were impacted by one-time effects of the Act that would be impracticable to calculate for ACG. The unaudited pro-forma information should not be considered indicative of the results that would have occurred if the acquisition had been completed on January 1, 2017, nor is such unaudited pro-forma information necessarily indicative of future results.

	Year Ended December 31, 2018		Year Ended December 31, 2017
	(in millions)
Revenues	$	1,604.1	$	1,594.4
Income before income taxes	$	97.6	$	133.6