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Segment Information Financial Information Related to Company's Reportable Segments (Details) $ in Millions | 12 Months Ended
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Sep. 30, 2019 USD ($) Segment | Sep. 30, 2018 USD ($) | Sep. 30, 2017 USD ($)
Segment Information [Line Items] |  |  |  |
Number of reportable segments | Segment |  | 4 |  |
Segment EBITA |  | $ 3,041 | $ 3,138 | $ 2,831
Amortization of Intangible Assets |  | (377) | (376) | (481)
General corporate expenses | [1] | (405) | (584) | (770)
Net sales |  | 23,968 | 23,400 | 22,835
Net financing charges |  | (350) | (401) | (466)
Restructuring and impairment costs |  | (235) | (255) | (347)
Mark-to-market gain (loss) |  | (618) | 24 | 384
Equity income in segment income |  | 192 | 177 | 157
Income from continuing operations before income taxes |  | 1,056 | 1,546 | 1,151
Total assets |  | 42,287 | 48,797 | 51,884
Assets held for sale |  | 158 | 8,203 | 10,725
Depreciation and amortization |  | 825 | 824 | 919
Capital expenditures |  | 586 | 645 | 760
Building Solutions North America |  |  |  |
Segment Information [Line Items] |  |  |  |
Net sales |  | 9,031 |  |
Equity Method Investments |  | 8 | 8 | 8
Building Solutions EMEA/LA |  |  |  |
Segment Information [Line Items] |  |  |  |
Net sales |  | 3,655 |  |
Equity Method Investments |  | 109 | 99 | 107
Building Solutions Asia Pacific |  |  |  |
Segment Information [Line Items] |  |  |  |
Net sales |  | 2,658 |  |
Equity Method Investments |  | 6 | 1 |
Global Products |  |  |  |
Segment Information [Line Items] |  |  |  |
Net sales |  | 8,624 |  |
Equity Method Investments |  | 730 | 740 | 629
Building Technologies & Solutions |  |  |  |
Segment Information [Line Items] |  |  |  |
Total assets | [2] | 36,950 | 37,385 | 36,706
Depreciation and amortization |  | 764 | 764 | 859
Capital expenditures |  | 548 | 520 | 653
Building Technologies & Solutions | Building Solutions North America |  |  |  |
Segment Information [Line Items] |  |  |  |
Segment EBITA | [3] | 1,153 | 1,109 | 1,039
Net sales |  | 9,031 | 8,679 | 8,341
Restructuring and impairment costs |  |  | (20) | (59)
Total assets | [4] | 15,562 | 15,384 | 15,228
Depreciation and amortization |  | 233 | 236 | 272
Capital expenditures |  | 119 | 114 | 107
Building Technologies & Solutions | Building Solutions EMEA/LA |  |  |  |
Segment Information [Line Items] |  |  |  |
Segment EBITA | [5] | 368 | 344 | 290
Net sales |  | 3,655 | 3,696 | 3,595
Restructuring and impairment costs |  |  | (56) | (74)
Equity income in segment income |  | 12 | 1 | 5
Total assets | [6] | 4,786 | 4,997 | 4,885
Depreciation and amortization |  | 112 | 110 | 140
Building Technologies & Solutions | Building Solutions EMEA/LA |  |  |  |
Segment Information [Line Items] |  |  |  |
Capital expenditures |  | 93 | 73 | 98
Building Technologies & Solutions | Building Solutions Asia Pacific |  |  |  |
Segment Information [Line Items] |  |  |  |
Segment EBITA | [7] | 341 | 347 | 323
Net sales |  | 2,658 | 2,553 | 2,444
Restructuring and impairment costs |  |  | (16) | (16)
Equity income in segment income |  | 1 | 1 | 1
Total assets | [8] | 2,657 | 2,743 | 2,575
Depreciation and amortization |  | 23 | 28 | 37
Capital expenditures |  | 26 | 26 | 27
Building Technologies & Solutions | Global Products |  |  |  |
Segment Information [Line Items] |  |  |  |
Segment EBITA | [9] | 1,179 | 1,338 | 1,179
Net sales |  | 8,624 | 8,472 | 8,455
Restructuring and impairment costs |  | (235) | (113) | (32)
Equity income in segment income |  | 179 | 175 | 151
Total assets | [10] | 13,945 | 14,261 | 14,018
Depreciation and amortization |  | 396 | 390 | 410
Capital expenditures |  | 310 | 307 | 421
Unallocated |  |  |  |
Segment Information [Line Items] |  |  |  |
Total assets |  | 5,179 | 3,209 | 4,453
Corporate |  |  |  |
Segment Information [Line Items] |  |  |  |
Restructuring and impairment costs |  |  | (50) | (166)
Depreciation and amortization |  | 61 | 60 | 60
Capital expenditures |  | 38 | 125 | 107
Continuing Operations [Member] |  |  |  |
Segment Information [Line Items] |  |  |  |
Depreciation and amortization |  | 825 | 824 | 919
Capital expenditures |  | 586 | 645 | 760
Discontinued Operations |  |  |  |
Segment Information [Line Items] |  |  |  |
Depreciation and amortization |  | 32 | 261 | 269
Capital expenditures |  | 197 | 385 | 583
Continuing and Discontinued Operations [Member] |  |  |  |
Segment Information [Line Items] |  |  |  |
Depreciation and amortization |  | 857 | 1,085 | 1,188
Capital expenditures |  | $ 783 | $ 1,030 | $ 1,343
[1] | Corporate expenses for the years ended September 30, 2018 and 2017 excludes $50 million and $166 million, respectively, of restructuring and impairment costs.
[2] | Current year and prior year amounts exclude assets held for sale. Refer to Note 3, "Discontinued Operations," of the notes to consolidated financial statements for further information regarding the Company's disposal groups classified as held for sale.
[3] | Building Solutions North America segment EBITA for the year ended September 30, 2018 and 2017 excludes $20 million and $59 million, respectively, of restructuring and impairment costs.
[4] | Buildings Solutions North America assets as of September 30, 2019, 2018 and 2017 include $8 million, $8 million and $8 million, respectively, of investments in partially-owned affiliates.
[5] | Building Solutions EMEA/LA segment EBITA for the years ended September 30, 2018 and 2017 excludes $56 million and $74 million, respectively, of restructuring and impairment costs. For the years ended September 30, 2019, 2018 and 2017, EMEA/LA segment EBITA includes $12 million, $1 million and $5 million, respectively, of equity income.
[6] | Building Solutions EMEA/LA assets as of September 30, 2019, 2018 and 2017 include $109 million, $99 million and $107 million, respectively, of investments in partially-owned affiliates.
[7] | Building Solutions Asia Pacific segment EBITA for the year ended September 30, 2018 and 2017 excludes $16 million and $16 million, respectively, of restructuring and impairment costs. For the years ended September 30, 2019, 2018 and 2017, Asia Pacific segment EBITA includes $1 million, $1 million and $1 million, respectively, of equity income.
[8] | Building Solutions Asia Pacific assets as of September 30, 2019 and 2018 include $6 million and $1 million, respectively, of investments in partially-owned affiliates.
[9] | Global Products segment EBITA for the years ended September 30, 2019, 2018 and 2017 excludes $235 million, $113 million and $32 million, respectively, of restructuring and impairment costs. For the years ended September 30, 2019, 2018 and 2017, Global Products segment EBITA includes $179 million, $175 million and $151 million, respectively, of equity income.
[10] | Global Products assets as of September 30, 2019, 2018 and 2017 include $730 million, $740 million and $629 million, respectively, of investments in partially-owned affiliates.

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