OTHER COMMITMENTS AND CONTINGENCIES - Warranty (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Changes in the company's warranty liability
Balance at January 1	$ 192	$ 152
Accruals for warranties issued during the year	63	66
Accruals related to pre-existing warranties	9	33
Settlements made (in cash or kind) during the year	(59)	(56)
Other, net (including currency translation)	0	(3)
Balance at December 31	205	$ 192
Windows and Other Specialty Products
Product Warranty Liability [Line Items]
Increase in future warranty claims	$ 31