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Percentage-of-Completion Contracts | 6 Months Ended
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Mar. 31, 2018
Disclosure Percentage Of Completion Contracts Additional Information [Abstract] |
Percentage-of-Completion Contracts | Percentage-of-Completion Contracts The Building Technologies & Solutions business records certain long-term contracts under the percentage-of-completion method of accounting. Under this method, sales and gross profit are recognized as work is performed based on the relationship between actual costs incurred and total estimated costs at completion. The Company records costs and earnings in excess of billings on uncompleted contracts primarily within accounts receivable - net and billings in excess of costs and earnings on uncompleted contracts primarily within deferred revenue in the consolidated statements of financial position. Costs and earnings in excess of billings related to these contracts were $1,065 million and $908 million at March 31, 2018 and September 30, 2017, respectively. Billings in excess of costs and earnings related to these contracts were $565 million and $451 million at March 31, 2018 and September 30, 2017, respectively.

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- Definition Disclosure - Percentage of Completion Contracts - Additional Information [Abstract] + References No definition available. + Details
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- Definition The entire disclosure for long-term contracts or programs. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -URI http://asc.fasb.org/topic&trid=2122208 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 605 -SubTopic 35 -URI http://asc.fasb.org/subtopic&trid=2197326 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 912 -URI http://asc.fasb.org/topic&trid=2145070 + Details
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