DISCONTINUED OPERATIONS - Selected Financial Information (Details) - USD ($) $ in Millions			12 Months Ended
	Sep. 30, 2015	Jun. 30, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Selected financial information of discontinued operations
Issuance of TopBuild Corp. debt			$ 0	$ 200	$ 0
TopBuild
Selected financial information of discontinued operations
Issuance of TopBuild Corp. debt	$ 200
TopBuild | Installation and Other Services
Selected financial information of discontinued operations
Percentage of businesses planned for spinoff		100.00%