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Revenue Recognition Contract Asset & Liability (Tables) | 9 Months Ended
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Sep. 30, 2018
Contract Asset and Liability [Abstract] |
Contract with Customer, Asset and Liability [Table Text Block] | Contract Assets and Liabilities. Contract assets reflect revenue recognized and performance obligations satisfied in advance of customer billing. Contract liabilities relate to payments received in advance of the satisfaction of performance under the contract. We receive payments from customers based on the terms established in our contracts. Total contract assets and contract liabilities as of September 30, 2018 are as follows:
(dollars in millions) | September 30, 2018
Contract assets, current | $ | 3,450 |
Contract assets, noncurrent (included within Other assets) | 1,075 |
Total contract assets | 4,525 |
Contract liabilities, current | (5,460 | )
Contract liabilities, noncurrent (included within Other long-term liabilities) | (5,044 | )
Total contract liabilities | (10,504 | )
Net contract liabilities | $ | (5,979 | )
Under the New Revenue Standard, during the nine months ended September 30, 2018, net contract liabilities increased to $5,979 million. This reflects the establishment of $6,365 million of net contract liabilities upon the adoption, and $21,093 million of advance payments from customers and reclassifications of contract assets to receivables upon billing during the period. These increases were partially offset by the liquidation of beginning of period contract liabilities of $1,978 million as a result of revenue recognition, and by $19,499 million of revenue recognition within the period. The remaining change is primarily attributable to the impact of foreign currency exchange rate changes on the balance of contract assets and liabilities offset by net contract liabilities acquired through business combinations.

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- Definition Tabular disclosure of contract balances and changes in contract balances. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=109196051&loc=SL49130551-203045 + Details
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Period Type: | duration

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- Definition Contract Asset and Liability [Abstract] + References No definition available. + Details
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Namespace Prefix: | utx_
Data Type: | xbrli:stringItemType
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Period Type: | duration