Significant Accounting Policies - Additional Information (Detail) $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2019 USD ($) State	Jun. 30, 2019 USD ($) Facility State Segment	Jan. 01, 2019 USD ($)	Dec. 31, 2018 USD ($)
Significant Accounting Policies [Line Items]
Number of states with aggregates business sales by destination | State	27	27
Number of reportable segments | Segment		3
Out of period expenses	$ 15,700
Operating lease, right of use asset	487,360	$ 487,360
Operating lease, liability	489,943	489,943
Finance leases, liability	$ 10,363	$ 10,363		$ 10,879
Accounting Standards Update 2016-02
Significant Accounting Policies [Line Items]
Operating lease, right of use asset			$ 502,500
Operating lease, liability			501,600
Finance leases, right of use asset			10,900
Finance leases, liability			$ 12,100
Minimum
Significant Accounting Policies [Line Items]
Number of quarries and yards | Facility		300