SEGMENT INFORMATION - Provision For Depreciation and Amortization (DETAIL) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Segment Reporting Information [Line Items]
Depreciation and amortization	$ 502	$ 493	$ 457
Charges related to cost reduction actions	19	41	28
Composites
Segment Reporting Information [Line Items]
Depreciation and amortization	162	159	154
Insulation
Segment Reporting Information [Line Items]
Depreciation and amortization	208	201	194
Roofing
Segment Reporting Information [Line Items]
Depreciation and amortization	59	59	54
Total Segments
Segment Reporting Information [Line Items]
Depreciation and amortization	429	419	402
General Corporate
Segment Reporting Information [Line Items]
Depreciation and amortization	73	74	55
Accelerated Depreciation | Cost of Sales
Segment Reporting Information [Line Items]
Charges related to cost reduction actions	$ 13	$ 20	$ 9