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Restructuring (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Jun. 30, 2018 | Jun. 30, 2017 | Jun. 30, 2018 | Jun. 30, 2017 | Sep. 30, 2018
Restructuring Reserve [Roll Forward] |  |  |  |  |
Beginning restructuring liability |  |  | $ 65 |  |
Restructuring expense | $ 14 | $ 21 | 38 | $ 45 |
Restructuring utilized/paid |  |  | 60 |  |
Ending restructuring liability | 43 |  | 43 |  |
Severance and benefits [Member] |  |  |  |  |
Restructuring Reserve [Roll Forward] |  |  |  |  |
Beginning restructuring liability |  |  | 60 |  |
Restructuring expense |  |  | 24 |  |
Restructuring utilized/paid |  |  | 48 |  |
Ending restructuring liability | 36 |  | 36 |  |
Lease and other contract terminations [Member] |  |  |  |  |
Restructuring Reserve [Roll Forward] |  |  |  |  |
Beginning restructuring liability |  |  | 4 |  |
Restructuring expense |  |  | 2 |  |
Restructuring utilized/paid |  |  | 2 |  |
Ending restructuring liability | 4 |  | 4 |  |
Assets Write Downs [Member] |  |  |  |  |
Restructuring Reserve [Roll Forward] |  |  |  |  |
Beginning restructuring liability |  |  | 0 |  |
Restructuring expense |  |  | 1 |  |
Restructuring utilized/paid |  |  | 1 |  |
Ending restructuring liability | 0 |  | 0 |  |
Vacant facility and other shutdown costs [Member] |  |  |  |  |
Restructuring Reserve [Roll Forward] |  |  |  |  |
Beginning restructuring liability |  |  | 1 |  |
Restructuring expense |  |  | 4 |  |
Restructuring utilized/paid |  |  | 3 |  |
Ending restructuring liability | 2 |  | 2 |  |
Start-up and moving costs [Member] |  |  |  |  |
Restructuring Reserve [Roll Forward] |  |  |  |  |
Beginning restructuring liability |  |  | 0 |  |
Restructuring expense |  |  | 7 |  |
Restructuring utilized/paid |  |  | 6 |  |
Ending restructuring liability | 1 |  | 1 |  |
Automation Solutions [Member] |  |  |  |  |
Restructuring Reserve [Roll Forward] |  |  |  |  |
Restructuring expense | 9 | 20 | 26 | 35 |
Commercial & Residential Solutions [Member] |  |  |  |  |
Restructuring Reserve [Roll Forward] |  |  |  |  |
Restructuring expense | 4 | 1 | 11 | 9 |
Climate Technologies [Member] |  |  |  |  |
Restructuring Reserve [Roll Forward] |  |  |  |  |
Restructuring expense | 4 | 1 | 11 | 8 |
Tools & Home Products [Member] |  |  |  |  |
Restructuring Reserve [Roll Forward] |  |  |  |  |
Restructuring expense | 0 | 0 | 0 | 1 |
Corporate Segment [Member] |  |  |  |  |
Restructuring Reserve [Roll Forward] |  |  |  |  |
Restructuring expense | $ 1 | $ 0 | $ 1 | $ 1 |
Scenario, Forecast [Member] |  |  |  |  |
Restructuring Reserve [Roll Forward] |  |  |  |  |
Expected fiscal year restructuring expense |  |  |  |  | $ 80

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