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Significant Restructuring Costs Change in Restructuring Reserve - 2021 Restructuring Plan (Details) - USD ($) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Sep. 30, 2021
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring and impairment costs | $ 49 | $ 0 |
2021 Restructuring Plan |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring and Related Cost, Total Expected Cost | 385 |  |
Restructuring and impairment costs | 49 |  | $ 242
Payments for Restructuring | (20) |  | (79)
Restructuring Reserve, Settled without Cash |  |  | (98)
Currency Translation | (1) |  |
Restructuring Reserve | 93 |  | 65
Restructuring and Related Cost, Cost Incurred to Date | 291 |  |
2021 Restructuring Plan | Employee Severance |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring and impairment costs | 28 |  | 68
Payments for Restructuring | (13) |  | (28)
Restructuring Reserve, Settled without Cash |  |  | 0
Currency Translation | (1) |  |
Restructuring Reserve | 54 |  | 40
2021 Restructuring Plan | Long-Lived Asset Impairment |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring and impairment costs | 0 |  | 98
Payments for Restructuring | 0 |  | 0
Restructuring Reserve, Settled without Cash |  |  | (98)
Currency Translation | 0 |  |
Restructuring Reserve | 0 |  | 0
2021 Restructuring Plan | Other Restructuring |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring and impairment costs | 21 |  | 76
Payments for Restructuring | (7) |  | (51)
Restructuring Reserve, Settled without Cash |  |  | 0
Currency Translation | 0 |  |
Restructuring Reserve | 39 |  | $ 25
2021 Restructuring Plan | Global Products |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring and impairment costs | 24 |  |
Restructuring and Related Cost, Cost Incurred to Date | 115 |  |
2021 Restructuring Plan | Building Solutions North America |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring and impairment costs | 9 |  |
Restructuring and Related Cost, Cost Incurred to Date | 79 |  |
2021 Restructuring Plan | Building Solutions Asia Pacific |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring and impairment costs | 8 |  |
Restructuring and Related Cost, Cost Incurred to Date | 36 |  |
2021 Restructuring Plan | Building Solutions EMEA/LA |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring and impairment costs | 5 |  |
Restructuring and Related Cost, Cost Incurred to Date | 34 |  |
2021 Restructuring Plan | Corporate Segment |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring and impairment costs | 3 |  |
Restructuring and Related Cost, Cost Incurred to Date | $ 27 |  |

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