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Segment Information - Financial Information Related to Company's Reportable Segments (Detail) - USD ($) $ in Millions | 3 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017
Segment Reporting Information [Line Items] |  |
Net sales | $ 5,464 | $ 5,305
Net sales | 5,464 | 5,305
Segment EBITA | 583 | 656
Corporate expenses | (136) | (138)
Amortization of intangible assets | (97) | (92)
Restructuring and impairment costs | 0 | (154)
Equity Securities, FV-NI, Unrealized Gain (Loss) Restricted | (21) | 0
Net financing charges | (85) | (102)
Income from continuing operations before income taxes | 244 | 170
Building Solutions North America |  |
Segment Reporting Information [Line Items] |  |
Net sales | 2,116 |
Building Solutions EMEA/LA |  |
Segment Reporting Information [Line Items] |  |
Net sales | 907 |
Building Solutions Asia Pacific |  |
Segment Reporting Information [Line Items] |  |
Net sales | 613 |
Global Products |  |
Segment Reporting Information [Line Items] |  |
Net sales | 1,828 |
Building Technologies & Solutions | Building Solutions North America |  |
Segment Reporting Information [Line Items] |  |
Net sales | 2,116 | 2,012
Segment EBITA | 250 | 227
Building Technologies & Solutions | Building Solutions EMEA/LA |  |
Segment Reporting Information [Line Items] |  |
Net sales | 907 | 915
Segment EBITA | 77 | 69
Building Technologies & Solutions | Building Solutions Asia Pacific |  |
Segment Reporting Information [Line Items] |  |
Net sales | 613 | 597
Segment EBITA | 66 | 74
Building Technologies & Solutions | Global Products |  |
Segment Reporting Information [Line Items] |  |
Net sales | 1,828 | 1,781
Segment EBITA | $ 190 | $ 286

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- Definition Amount of income or loss from continuing operations before income taxes and noncontrolling interests, excluding general corporate expenses, intangible asset amortization, net financing charges, significant restructuring and impairment costs, and net mark-to-market adjustments on pension and postretirement plans. + References No definition available. + Details
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- Definition The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16225-109274 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3602-108585 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details
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