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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 |

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