RECLASSIFICATIONS FROM OTHER COMPREHENSIVE INCOME (LOSS) (Details) - USD ($) $ in Millions	3 Months Ended			12 Months Ended
	Sep. 30, 2021	Jun. 30, 2021	Sep. 30, 2019	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Mar. 22, 2021
Reclassifications from accumulated other comprehensive (loss) income
Actuarial losses, net and prior service cost				$ 717	$ 164	$ 174
Interest rate swaps				278	144	159
Tax expense (benefit)				210	269	230
Net of tax				(478)	(1,276)	(980)
Disproportionate tax expense	$ 11
5.95 Notes and Debentures Due March 15, 2022
Reclassifications from accumulated other comprehensive (loss) income
Interest rate (as a percent)							5.95%
Amount reclassified
Reclassifications from accumulated other comprehensive (loss) income
Actuarial losses, net and prior service cost					9
Settlement loss				447
Tax expense (benefit)	$ (96)
Accumulated Defined Benefit Plans Adjustment, Net Gain (Loss) Including Portion Attributable to Noncontrolling Interest | Amount reclassified
Reclassifications from accumulated other comprehensive (loss) income
Actuarial losses, net and prior service cost				18	26	20
Settlement loss		$ 447		451	0	0
Tax expense (benefit)				(104)	(7)	(5)
Net of tax				365	19	15
UK Window Group | Accumulated Foreign Currency Adjustment Attributable to Parent | Amount reclassified
Reclassifications from accumulated other comprehensive (loss) income
Actuarial losses, net and prior service cost			$ 14
Hüppe | Accumulated Defined Benefit Plans Adjustment, Net Gain (Loss) Attributable to Parent | Amount reclassified
Reclassifications from accumulated other comprehensive (loss) income
Actuarial losses, net and prior service cost				(3)
Hüppe | Accumulated Foreign Currency Adjustment Attributable to Parent | Amount reclassified
Reclassifications from accumulated other comprehensive (loss) income
Actuarial losses, net and prior service cost		$ 23
Interest rate swaps (B) | Accumulated Gain (Loss), Cash Flow Hedge, Including Noncontrolling Interest | Amount reclassified
Reclassifications from accumulated other comprehensive (loss) income
Interest rate swaps				2	2	2
Tax expense (benefit)				5	(1)	0
Net of tax				$ 7	$ 1	$ 2