Long-Term Debt - Additional information (Detail) (USD $)	3 Months Ended		6 Months Ended			6 Months Ended				0 Months Ended					0 Months Ended		0 Months Ended	6 Months Ended			0 Months Ended			6 Months Ended				0 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Dec. 31, 2013	Jun. 30, 2014 Including Acquisition Bridge Debt	Jun. 30, 2014 Excluding Acquisition Bridge Debt	Jun. 30, 2014 Minimum	Jun. 30, 2014 Texas Industries Inc.	Jun. 23, 2014 Texas Industries Inc. Maximum Amended	Dec. 31, 2014 Texas Industries Inc. Maximum Scenario Forecast Amended	Sep. 30, 2014 Texas Industries Inc. Maximum Scenario Forecast Amended	Jun. 23, 2014 4.25% Senior Notes due 2024	Jun. 23, 2014 4.25% Senior Notes due 2024	Jun. 23, 2014 Floating Rate Senior Notes due in 2017	Jun. 23, 2014 Floating Rate Senior Notes due in 2017	Jun. 23, 2014 Floating Rate Senior Notes due in 2017 three-month LIBOR	Jun. 30, 2014 6.6% Senior Notes, Due 2018	Dec. 31, 2013 6.6% Senior Notes, Due 2018	Jun. 30, 2013 6.6% Senior Notes, Due 2018	Jun. 23, 2014 9.25% Senior Notes due 2020	Jun. 23, 2014 9.25% Senior Notes due 2020 Texas Industries Inc. Amended	Jun. 23, 2014 9.25% Senior Notes due 2020 Texas Industries Inc. Amended	Jun. 30, 2014 Revolving Facility	Dec. 31, 2013 Revolving Facility	Jun. 30, 2013 Revolving Facility	Jun. 30, 2014 Term Loan Facility	Apr. 18, 2014 Trade Receivable Credit Facility	Jun. 30, 2014 Trade Receivable Credit Facility	Dec. 31, 2013 Trade Receivable Credit Facility	Jun. 30, 2013 Trade Receivable Credit Facility	Jul. 01, 2014 Trade Receivable Credit Facility Subsequent Event	Jul. 01, 2014 Trade Receivable Credit Facility Subsequent Event Credit Agreement Amendment
Debt Instrument
Senior notes	$ 1,084,801,000	$ 1,093,319,000	$ 1,084,801,000	$ 1,093,319,000	$ 1,030,921,000									$ 400,000,000		$ 300,000,000		$ 299,006,000	$ 298,893,000	$ 298,783,000
Interest rate on notes														4.25%				6.60%					9.25%
Maturity date, year													2024		2017			2018				2020
Basis spread on variable rate																	1.10%
Redemption of debt																					650,000,000
Outstanding borrowing under credit facility																								40,000,000		50,000,000			311,792,000	213,386,000	253,020,000
Credit facility, maturity date																												Sep. 30, 2014
Credit facility commitment																								350,000,000			250,000,000					150,000,000	250,000,000
Senior unsecured revolving facility, maturity period																								5 years
Debt covenant						3.50x	3.75x				3.50x	3.75x
Reduction of consolidated debt in the debt ratio calculation								50,000,000
Maximum consolidated debt reduction for unrestricted cash and cash equivalents for debt covenant calculation			200,000,000
Amendment consolidated EBITDA										95,000,000
Acquisition integration expenses	1,942,000		2,210,000						2,210,000	70,000,000
Outstanding letters of credit																								2,507,000	2,507,000	2,507,000
Additional interest expense	295,000	275,000	583,000	544,000
Increase in annual interest expense due to ongoing amortization of the terminated value of the swap agreements																		$ 1,200,000