RTX (RTX) 10-Q 27 Jul 18 2018 Q2 Quarterly report Financial data

Document and Entity Information

Document and Entity Information	6 Months Ended
	Jun. 30, 2018USD ($)shares
Document and Entity Information [Abstract]
Document Type	10-Q
Document Period End Date	Jun. 30, 2018
Amendment Flag	false
Document Fiscal Year Focus	2,018
Document Fiscal Period Focus	Q2
Current Fiscal Year End Date	--12-31
Entity Registrant Name	UNITED TECHNOLOGIES CORP /DE/
Entity Central Index Key	101,829
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Filer Category	Large Accelerated Filer
Entity Public Float | $	$ 99,985,852,722
Entity Common Stock, Shares Outstanding | shares	800,093,285

Condensed Consolidated Statemen

Condensed Consolidated Statement of Operations Condensed Consolidated Statement of Operations - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Net Sales:
Revenues	$ 16,705	$ 15,280	$ 31,947	$ 29,095
Costs and Expenses:
Research and development	589	619	1,143	1,205
Selling, general and administrative	1,759	1,590	3,470	3,127
Total costs and expenses	14,770	13,373	28,315	25,632
Other income, net	941	257	1,172	845
Operating profit	2,876	2,164	4,804	4,308
Non-service pension cost (benefit)	(192)	(126)	(383)	(249)
Interest expense, net	234	226	463	439
Income from operations before income taxes	2,834	2,064	4,724	4,118
Income tax expense	695	532	1,217	1,118
Net Income from operations	2,139	1,532	3,507	3,000
Less: Noncontrolling interest in subsidiaries' earnings from operations	91	93	162	175
Income from continuing operations attributable to common shareowners	2,048	1,439	3,345	2,825
Net income attributable to common shareowners	$ 2,048	$ 1,439	$ 3,345	$ 2,825
Earnings Per Share of Common Stock - Basic:
Income from continuing operations attributable to common shareowners	$ 2.59	$ 1.83	$ 4.23	$ 3.57
Net income attributable to common shareowners	2.59	1.83	4.23	3.57
Earnings Per Share of Common Stock - Diluted:
Income from continuing operations attributable to common shareowners	2.56	1.80	4.18	3.53
Net income attributable to common shareowners	$ 2.56	$ 1.80	$ 4.18	$ 3.53
Product [Member]
Net Sales:
Revenues	$ 11,520	$ 10,661	$ 21,778	$ 20,298
Costs and Expenses:
Cost of Goods and Services Sold	9,154	7,957	17,170	15,268
Service [Member]
Net Sales:
Revenues	5,185	4,619	10,169	8,797
Costs and Expenses:
Cost of Goods and Services Sold	$ 3,268	$ 3,207	$ 6,532	$ 6,032

Condensed Consolidated Stateme3

Condensed Consolidated Statement of Comprehensive Income - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Statement of Comprehensive Income [Abstract]
Net Income from operations	$ 2,139	$ 1,532	$ 3,507	$ 3,000
Foreign currency translation adjustments
Foreign currency translation adjustments arising during period	(602)	249	(193)	395
Less: Reclassification adjustments for loss on sale of an investment in a foreign entity recognized in Other income, net	3	0	3	0
Foreign currency translation adjustments	(605)	249	(196)	395
Tax (benefit) expense	74	0	(56)	0
Foreign Currency Translation Adjustments, Net of Tax	(679)	249	(140)	395
Pension and post-retirement benefit plans
Pension and post-retirement benefit plans adjustments during the period	18	(5)	26	(4)
Amortization of actuarial loss, prior service cost and transition obligation	88	132	176	263
Total pension and post-retirement benefit plans, before tax	(106)	(127)	(202)	(259)
Tax expense	(26)	(47)	(49)	(96)
Pension and Other Postretirement Benefit Plans, Net of Tax	(80)	(80)	(153)	(163)
Unrealized gain (loss) on available-for-sale securities
Unrealized holding gain (loss) arising during period	0	30	0	(2)
Reclassification adjustments for gain included in Other income, net	0	24	0	407
Other Comprehensive Income (Loss), ASU 2016-01 adoption impact on Securities Arising During Period	0	0	(5)	0
Total unrealized gain (loss) on available for-sale securities, before tax	0	6	(5)	(409)
Tax expense (benefit)	0	2	0	(156)
Total unrealized gain (loss) on available for-sale securities, net of tax	0	4	(5)	(253)
Change in unrealized cash flow hedging
Unrealized cash flow hedging (loss) gain arising during the period	(245)	66	(200)	130
Gain (Loss) reclassified into Product Sales	1	(5)	28	(10)
Total unrealized (loss) gain on cash-flow hedging, before tax	(246)	71	(228)	140
Tax expense (benefit)	(60)	17	(56)	32
Total unrealized gain (loss) on cash-flow hedging, net of tax	(186)	54	(172)	108
Other comprehensive income (loss), net of tax	(785)	387	(164)	413
Comprehensive income	1,354	1,919	3,343	3,413
Less: Comprehensive income attributable to noncontrolling interest	53	111	157	218
Comprehensive income attributable to common shareowners	$ 1,301	$ 1,808	$ 3,186	$ 3,195

Condensed Consolidated Balance

Condensed Consolidated Balance Sheet - USD ($) $ in Millions	Jun. 30, 2018	Dec. 31, 2017
Statement of Financial Position [Abstract]
Cash and cash equivalents	$ 11,068	$ 8,985
Accounts receivable, net	11,973	12,595
Contract with Customer, Asset, Net, Current	3,273	0
Inventories and contracts in progress, net	8,979	9,881
Other assets, current	1,263	1,397
Total Current Assets	36,556	32,858
Customer financing assets	2,763	2,372
Future income tax benefits	1,626	1,723
Fixed assets	21,597	21,364
Less: Accumulated depreciation	11,482	11,178
Fixed assets, net	10,115	10,186
Goodwill	27,699	27,910
Intangible assets, net	15,739	15,883
Other assets	7,071	5,988
Total Assets	101,569	96,920
Short-term borrowings	985	392
Accounts payable	9,623	9,579
Accrued liabilities	8,730	12,316
Contract with Customer, Liability, Current	5,652	0
Long-term debt currently due	78	2,104
Total Current Liabilities	25,068	24,391
Long-term debt	27,246	24,989
Future pension and postretirement benefit obligations	2,589	3,036
Other long-term liabilities	13,190	12,952
Total Liabilities	68,093	65,368
Commitments and contingent liabilities (Note 15)
Redeemable noncontrolling interest	130	131
Common Stock	17,747	17,574
Treasury Stock	35,645	35,596
Retained earnings	57,027	55,242
Unearned ESOP shares	81	85
Accumulated other comprehensive loss	(7,684)	(7,525)
Total Shareowners' Equity	31,364	29,610
Noncontrolling interest	1,982	1,811
Total Equity	33,346	31,421
Total Liabilities and Equity	$ 101,569	$ 96,920

Condensed Consolidated Stateme5

Condensed Consolidated Statement of Cash Flows - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Statement of Cash Flows [Abstract]
Net Income from operations	$ 3,507	$ 3,000
Adjustments to reconcile income from continuing operations to net cash flows provided by operating activities of continuing operations:
Depreciation and amortization	1,173	1,039
Deferred income tax provision	45	502
Stock compensation cost	117	96
Gain on sale of Taylor Company	795	0
Change in:
Accounts receivable	1,661	951
Contract assets, current	617	0
Inventories and contracts in progress	962	1,066
Other current assets	(301)	(27)
Accounts payable and accrued liabilities	2,010	1,436
Contract liabilities, current	440	0
Global pension contributions	59	79
Canadian Government Settlement	(221)	(246)
Other operating activities, net	723	619
Net cash flows provided by operating activities of continuing operations	2,555	3,139
Investing Activities of Continuing Operations:
Capital expenditures	709	771
Investments in businesses	134	168
Dispositions of businesses	1,094	19
Proceeds from the sale of the investment in Watsco Inc.	0	596
Increase in customer financing assets	344	240
Increase in collaboration intangible assets	181	195
Payments (receipts) from settlements of derivative contracts	(82)	294
Other investing activities, net	46	(63)
Net cash flows used in investing activities of continuing operations	(238)	(990)
Financing Activities of Continuing Operations:
Proceeds from Issuance of Long-term Debt	2,429	4,013
Repayments of Long-term Debt	2,092	1,611
Increase in short-term borrowings, net	642	32
Proceeds from Common Stock issued under employee stock plans	6	22
Dividends paid on Common Stock	1,070	1,008
Repurchase of Common Stock	52	1,370
Other financing activities, net	(74)	(130)
Net cash flows used in financing activities of continuing operations	(211)	(52)
Effect of Exchange Rate on Cash and Cash Equivalents [Abstract]
Effect of foreign exchange rate changes on cash and cash equivalents	(18)	95
Net increase in cash and cash equivalents	2,088	2,192
Cash and Cash Equivalents, beginning of year	9,018	7,189
Cash and Cash Equivalents, end of period	11,106	9,381
Restricted Cash	38	36
Cash and cash equivalents, end of period	$ 11,068	$ 9,345

Introduction to Notes to Conden

Introduction to Notes to Condensed Consolidated Financial Statements (Unaudited) Introduction	6 Months Ended
	Jun. 30, 2018
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Introduction of Notes to Condensed Consolidated Financial Statements	The Condensed Consolidated Financial Statements at June 30, 2018 and for the quarter and six months ended June 30, 2018 and 2017 are unaudited, but in the opinion of management include all adjustments (consisting only of normal recurring adjustments) necessary for a fair statement of the results for the interim periods. The results reported in these Condensed Consolidated Financial Statements should not necessarily be taken as indicative of results that may be expected for the entire year. The financial information included herein should be read in conjunction with the financial statements and notes in our Annual Report to Shareowners ( 2017 Annual Report) incorporated by reference in our Annual Report on Form 10-K for calendar year 2017 ( 2017 Form 10-K).

Acquisitions, Dispositions, Goo

Acquisitions, Dispositions, Goodwill and Other Intangible Assets	6 Months Ended
	Jun. 30, 2018
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net [Abstract]
Acquisitions, Dispositions, Goodwill and Other Intangible Assets [Text Block]	Acquisitions, Dispositions, Goodwill and Other Intangible Assets Business Acquisitions and Dispositions. During the six months ended June 30, 2018 , our investment in business acquisitions was $134 million , and primarily consisted of an acquisition at Pratt & Whitney. On June 21, 2018, UTC Climate, Controls & Security completed its sale of Taylor Company for proceeds of $1.0 billion resulting in a pre-tax gain of $795 million ( $588 million after tax). On September 4, 2017 , we announced that we had entered into a merger agreement with Rockwell Collins, Inc. (Rockwell Collins) , under which we agreed to acquire Rockwell Collins. Under the terms of the merger agreement, each Rockwell Collins shareowner will receive $93.33 per share in cash and a fraction of a share of UTC common stock equal to the quotient obtained by dividing $46.67 by the average of the volume-weighted average prices per share of UTC common stock on the NYSE on each of the 20 consecutive trading days ending with the trading day immediately prior to the closing date, (the “UTC Stock Price”), subject to adjustment based on a two-way collar mechanism as described below (the “Stock Consideration”). The cash and UTC stock payable in exchange for each such share of Rockwell Collins common stock are collectively the “Merger Consideration.” The fraction of a share of UTC common stock into which each such share of Rockwell Collins common stock will be converted is the “Exchange Ratio.” The Exchange Ratio will be determined based upon the UTC Stock Price. If the UTC Stock Price is greater than $107.01 but less than $124.37, the Exchange Ratio will be equal to the quotient of (i) $46.67 divided by (ii) the UTC Stock Price, which, in each case, will result in the Stock Consideration having a value equal to $46.67. If the UTC Stock Price is less than or equal to $107.01 or greater than or equal to $124.37, then a two-way collar mechanism will apply, pursuant to which, (x) if the UTC Stock Price is greater than or equal to $124.37, the Exchange Ratio will be fixed at 0.37525 and the value of the Stock Consideration will be greater than $46.67, and (y) if the UTC Stock Price is less than or equal to $107.01, the Exchange Ratio will be fixed at 0.43613 and the value of the Stock Consideration will be less than $46.67. On January 11, 2018, the merger was approved by Rockwell Collins' shareowners. We currently expect that the merger will be completed in the third quarter of 2018, subject to customary closing conditions, including the receipt of required regulatory approvals. We anticipate that approximately $15 billion will be required to pay the aggregate cash portion of the Merger Consideration. We expect to fund the cash portion of the Merger Consideration through debt issuances and cash on hand. Additionally, we have entered into a $6.5 billion 364-day unsecured bridge loan credit agreement that would be funded only to the extent certain anticipated debt issuances are not completed prior to the completion of the merger. We expect to assume approximately $7 billion of Rockwell Collins' outstanding debt upon completion of the merger. Goodwill. Changes in our goodwill balances for the six months ended June 30, 2018 were as follows: (dollars in millions) Balance as of Goodwill Resulting from Business Combinations Foreign Currency Translation and Other Balance as of Otis $ 1,737 $ 5 $ (34 ) $ 1,708 UTC Climate, Controls & Security 10,009 1 (211 ) 9,799 Pratt & Whitney 1,511 57 (3 ) 1,565 UTC Aerospace Systems 14,650 — (26 ) 14,624 Total Segments 27,907 63 (274 ) 27,696 Eliminations and other 3 — — 3 Total $ 27,910 $ 63 $ (274 ) $ 27,699 The $274 million net reduction in goodwill within Foreign Currency Translation and Other includes a $150 million reduction of goodwill attributable to UTC Climate, Controls & Security's sale of Taylor Company. Intangible Assets. Identifiable intangible assets are comprised of the following: June 30, 2018 December 31, 2017 (dollars in millions) Gross Amount Accumulated Amortization Gross Amount Accumulated Amortization Amortized: Service portfolios $ 2,187 $ (1,588 ) $ 2,178 $ (1,534 ) Patents and trademarks 364 (226 ) 399 (233 ) Collaboration intangible assets 4,294 (510 ) 4,109 (384 ) Customer relationships and other 13,425 (4,281 ) 13,352 (4,100 ) 20,270 (6,605 ) 20,038 (6,251 ) Unamortized: Trademarks and other 2,074 — 2,096 — Total $ 22,344 $ (6,605 ) $ 22,134 $ (6,251 ) Customer relationship intangible assets include payments made to our customers to secure certain contractual rights. Such payments are capitalized when distinct rights are obtained and sufficient incremental cash flows to support the recoverability of the assets have been established. Otherwise, the applicable portion of the payments are expensed. We amortize these intangible assets based on the underlying pattern of economic benefit, which may result in an amortization method other than straight-line. In the aerospace industry, amortization based on the pattern of economic benefit generally results in lower amortization expense during the development period with amortization expense increasing as programs enter full production and aftermarket cycles. If a pattern of economic benefit cannot be reliably determined, a straight-line amortization method is used. We classify amortization of such payments as a reduction of sales. The collaboration intangible assets are amortized based upon the pattern of economic benefits as represented by the underlying cash flows. Amortization of intangible assets for the quarter and six months ended June 30, 2018 was $232 million and $455 million , respectively, compared with $210 million and $415 million for the same periods of 2017 . The following is the expected amortization of intangible assets for the years 2018 through 2023 , which reflects the pattern of expected economic benefit on certain aerospace intangible assets. (dollars in millions) Remaining 2018 2019 2020 2021 2022 2023 Amortization expense $ 457 $ 873 $ 874 $ 899 $ 896 $ 918

Revenue Recognition Revenue Rec

Revenue Recognition Revenue Recognition (Notes)	6 Months Ended
	Jun. 30, 2018
Revenue Recognition [Abstract]
Revenue Recognition [Text Block]	Revenue Recognition ASU 2014-09 and its related amendments (collectively, the New Revenue Standard) are effective for reporting periods beginning after December 15, 2017, and interim periods therein. We adopted the New Revenue Standard effective January 1, 2018 and elected the modified retrospective approach. The results for periods before 2018 were not adjusted for the new standard and the cumulative effect of the change in accounting was recognized through retained earnings at the date of adoption. Revenue Recognition Accounting Policy Summary. We account for revenue in accordance with Accounting Standards Codification (ASC) Topic 606: Revenue from Contracts with Customers . Under Topic 606, a performance obligation is a promise in a contract with a customer to transfer a distinct good or service to the customer. Some of our contracts with customers contain a single performance obligation, while others contain multiple performance obligations most commonly when a contract spans multiple phases of the product life-cycle such as development, production, maintenance and support. A contract's transaction price is allocated to each distinct performance obligation and recognized as revenue when, or as, the performance obligation is satisfied. When there are multiple performance obligations within a contract, we allocate the transaction price to each performance obligation based on its standalone selling price. We consider the contractual consideration payable by the customer and assess variable consideration that may affect the total transaction price, including contractual discounts, contract incentive payments, estimates of award fees, and other sources of variable consideration, when determining the transaction price of each contract. We include variable consideration in the estimated transaction price when there is a basis to reasonably estimate the amount. These estimates are based on historical experience, anticipated performance and our best judgment at the time. We also consider whether our contracts provide customers with significant financing. Generally, our contracts do not contain significant financing. Point in time revenue recognition. Timing of the satisfaction of performance obligations varies across our businesses due to our diverse product and service mix, customer base, and contractual terms. Performance obligations are satisfied as of a point in time for heating, ventilating, air-conditioning and refrigeration systems, certain alarm and fire detection and suppression systems, and certain aerospace components, engines, and spare parts. Revenue is recognized when control of the product transfers to the customer, generally upon product shipment. Over-time revenue recognition. Performance obligations are satisfied over-time if the customer receives the benefits as we perform work, if the customer controls the asset as it is being produced, or if the product being produced for the customer has no alternative use and we have a contractual right to payment. Revenue is recognized for our construction-type and certain production-type contracts on an over-time basis. We recognize revenue on an over-time basis on certain long-term aerospace aftermarket contracts and aftermarket service work; development, fixed price, and other cost reimbursement contracts in our aerospace businesses; and elevator and escalator sales, installation, service, modernization and other construction contracts in our commercial businesses. For construction and installation contracts within our commercial businesses and aerospace performance obligations satisfied over time, revenue is recognized using costs incurred to date relative to total estimated costs at completion to measure progress. Incurred costs represent work performed, which correspond with and best depict transfer of control to the customer. Contract costs include labor, materials, and subcontractors' costs, or other direct costs, and where applicable on government and commercial contracts, indirect costs. For certain of our long-term aftermarket contracts, revenue is recognized over the contract period. In the commercial businesses, revenue is primarily recognized on a straight-line basis over the contract period. In the aerospace businesses, we generally account for such contracts as a series of daily obligations to stand ready to provide product maintenance and aftermarket services. Revenue is primarily recognized in proportion to cost as sufficient historical evidence indicates that the cost of performing services under the contract is incurred on an other than straight-line basis. Aerospace contract modifications are routine and contracts are often modified to account for changes in contract specifications or requirements. Contract modifications that are for goods or services that are not distinct are accounted for as part of the existing contract. We incur costs for engineering and development of aerospace products directly related to existing or anticipated contracts with customers. Such costs generate or enhance our ability to satisfy our performance obligations under these contracts. We capitalize these costs as contract fulfillment costs to the extent the costs are recoverable from the associated contract margin and subsequently amortize the costs as the original equipment (OEM) products are delivered to the customer. In instances where intellectual property does not transfer to the customer, we defer the customer funding of OEM product engineering and development and recognize revenue when the OEM products are delivered to the customer. Costs to obtain contracts are not material. Loss provisions on OEM contracts are recognized to the extent that estimated contract costs exceed the estimated consideration from the products contemplated under the contractual arrangement. For new commitments, we generally record loss provisions at the earlier of contract announcement or contract signing except for certain contracts under which losses are recorded upon receipt of the purchase order that obligates us to perform. For existing commitments, anticipated losses on contractual arrangements are recognized in the period in which losses become evident. Products contemplated under contractual arrangements include firm quantities of product sold under contract and, in the large commercial engine and wheels and brakes businesses, future highly probable sales of replacement parts required by regulation that are expected to be sold subsequently for incorporation into the original equipment. In the large commercial engine and wheels and brakes businesses, when the combined original equipment and aftermarket arrangement for each individual sales campaign are profitable, we record original equipment product losses, as applicable, at the time of delivery. We review our cost estimates on significant contracts on a quarterly basis and for others, no less frequently than annually or when circumstances change and warrant a modification to a previous estimate. We record changes in contract estimates using the cumulative catch-up method. The New Revenue Standard changed the revenue recognition practices for a number of revenue streams across our businesses, although the most significant impacts are concentrated in our aerospace units. Several businesses, which previously accounted for revenue on a point in time basis are now required to use an over-time model when their contracts meet one or more of the mandatory criteria established in the New Revenue Standard. Revenue is now recognized based on percentage-of-completion for repair contracts within Otis and UTC Climate, Controls & Security; certain U.S. Government and commercial aerospace equipment contracts; and aerospace aftermarket service work. For these businesses, unrecognized sales related to the satisfied portion of the performance obligations of contracts in process as of the date of adoption of approximately $220 million were recorded through retained earnings. The ongoing effect of recording revenue on a percentage-of-completion basis within these businesses is not expected to be materially different than the previous revenue recognition method. In addition to the foregoing, our aerospace businesses, in certain cases, also changed the timing of manufacturing cost recognition and certain engineering and development costs. In most circumstances, our commercial aerospace businesses identify the performance obligation as the individual OEM unit; revenue and cost to manufacture each unit are recognized upon OEM unit delivery. Under the prior accounting, the unit of accounting was the contract and early-contract OEM unit costs in excess of the average unit costs expected over the contract were capitalized and amortized over lower-cost units later in the contract. With the adoption of the New Revenue Standard, deferred unit costs in excess of the contract average of $438 million as of January 1, 2018 were eliminated through retained earnings, and as such, will not be amortized into future earnings. Under the New Revenue Standard, costs incurred for engineering and development of aerospace products under contracts with customers must be capitalized as contract fulfillment costs, to the extent recoverable from the associated contract margin, and subsequently amortized as the OEM products are delivered to the customer. Under prior accounting, we generally expensed costs of engineering and development of aerospace products. The new standard also requires that customer funding of OEM product engineering and development be deferred in instances where economic benefit does not transfer to the customer and recognized as revenue when the OEM products are delivered. Engineering and development costs which do not qualify for capitalization as contract fulfillment costs are expensed as incurred. Prior to the New Revenue Standard, any customer funding received for such development efforts was recognized when earned, with the corresponding costs recognized as cost of sales. With the adoption of the New Revenue Standard, we capitalized engineering and development costs of approximately $700 million as contract fulfillment cost assets through retained earnings as of January 1, 2018. We also established previously recognized customer funding of approximately $850 million as a contract liability through retained earnings as of the adoption date. We expect the New Revenue Standard will have an immaterial impact on our 2018 net income. Adoption of the New Revenue Standard has resulted in Statement of Operations classification changes between Net Sales, Cost of sales, Research & development, and Other income. The New Revenue Standard also resulted in the establishment of Contract asset and Contract liability balance sheet accounts, and in the reclassification of balances to these new accounts from Accounts receivable, Inventories and contracts in progress, net, and Accrued liabilities. In addition to the following disclosures, Note 16 provides incremental disclosures required by the New Revenue Standard, including disaggregation of revenue into categories that depict how the nature, amount, timing and uncertainty of revenue and cash flows are affected by economic factors. The following schedules quantify the impact of the New Revenue Standard on the statement of operations for the quarter and six months ended June 30, 2018 . The effect of the new standard represents the increase (decrease) in the line item based on the adoption of the New Revenue Standard. (dollars in millions) Quarter Ended June 30, 2018, under previous standard Effect of the New Revenue Standard Quarter Ended June 30, 2018 as reported Net Sales: Product sales $ 11,406 $ 114 $ 11,520 Service sales 5,115 70 5,185 16,521 184 16,705 Costs and Expenses: Cost of products sold 8,975 179 9,154 Cost of services sold 3,228 40 3,268 Research and development 607 (18 ) 589 Selling, general and administrative 1,759 — 1,759 14,569 201 14,770 Other income, net 943 (2 ) 941 Operating profit 2,895 (19 ) 2,876 Non-service pension (benefit) (192 ) — (192 ) Interest expense, net 234 — 234 Income from operations before income taxes 2,853 (19 ) 2,834 Income tax expense 700 (5 ) 695 Net income from operations 2,153 (14 ) 2,139 Less: Noncontrolling interest in subsidiaries' earnings from operations 87 4 91 Net income attributable to common shareowners $ 2,066 $ (18 ) $ 2,048 (dollars in millions) Six Months Ended June 30, 2018, under previous standard Effect of the New Revenue Standard Six Months Ended June 30, 2018 as reported Net Sales: Product sales $ 21,573 $ 205 $ 21,778 Service sales 9,968 201 10,169 31,541 406 31,947 Costs and Expenses: Cost of products sold 16,861 309 17,170 Cost of services sold 6,396 136 6,532 Research and development 1,180 (37 ) 1,143 Selling, general and administrative 3,470 — 3,470 27,907 408 28,315 Other income, net 1,175 (3 ) 1,172 Operating profit 4,809 (5 ) 4,804 Non-service pension (benefit) (383 ) — (383 ) Interest expense, net 463 — 463 Income from operations before income taxes 4,729 (5 ) 4,724 Income tax expense 1,218 (1 ) 1,217 Net income from operations 3,511 (4 ) 3,507 Less: Noncontrolling interest in subsidiaries' earnings from operations 156 6 162 Net income attributable to common shareowners $ 3,355 $ (10 ) $ 3,345 The New Revenue Standard resulted in an increase to Product and Service sales and Cost of products and services sold primarily due to the change to a percentage-of-completion revenue model for certain U.S Government and commercial aerospace equipment contracts, and aerospace aftermarket service work at Pratt & Whitney and UTC Aerospace Systems. The New Revenue Standard also resulted in an increase in Cost of products sold related to the timing of manufacturing cost recognition on early-contract OEM units sold, with costs in excess of the contract average unit costs recorded through Cost of products sold. The lower amounts of research and development expense recognized under the New Revenue Standard reflect the capitalization of costs of engineering and development of aerospace products as contract fulfillment costs under contracts with customers. The following schedule quantifies the impact of the New Revenue Standard on our balance sheet as of June 30, 2018 . (dollars in millions) June 30, 2018 under previous standard Effect of the New Revenue Standard June 30, 2018 as reported Assets Accounts receivable, net $ 13,432 $ (1,459 ) $ 11,973 Inventories 11,093 (2,114 ) 8,979 Contract assets, current — 3,273 3,273 Other assets, current 1,276 (13 ) 1,263 Future income tax benefits 1,600 26 1,626 Intangible assets, net 15,807 (68 ) 15,739 Other assets 6,098 973 7,071 Liabilities and Equity Accrued liabilities $ 14,287 $ (5,557 ) $ 8,730 Contract liabilities, current — 5,652 5,652 Other long term liabilities 12,180 1,010 13,190 Noncontrolling interest 1,977 5 1,982 Retained earnings 57,517 (490 ) 57,027 The decrease in Retained earnings of $490 million in the table above reflects $480 million of adjustments to the balance sheet as of January 1, 2018, resulting from the adoption of the New Revenue Standard and $10 million lower reported net income under the New Revenue Standard during 2018. The declines in Accounts receivable, net, Inventories, Other assets, current, and Intangible assets, net, reflect reclassifications to contract assets, and specifically for Inventories, earlier recognition of costs of products sold for contracts requiring an over-time method of revenue recognition. The increase in Other assets reflects the establishment of non-current contract assets and contract fulfillment cost assets. The decline in accrued liabilities is primarily due to the reclassification of payments from customers in advance of work performed as contract liabilities. The Other long term liabilities increase primarily reflects the establishment of non-current contract liabilities for certain customer funding of OEM product engineering and development, which will be recognized as revenue when the OEM products are delivered to the customer. 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 June 30, 2018 are as follows: (dollars in millions) June 30, 2018 Contract assets, current $ 3,273 Contract assets, noncurrent (included within Other assets) 1,015 Total contract assets 4,288 Contract liabilities, current (5,652 ) Contract liabilities, noncurrent (included within Other long-term liabilities) (4,838 ) Total contract liabilities (10,490 ) Net contract liabilities $ (6,202 ) Under the New Revenue Standard, during the six months ended June 30, 2018 , net contract liabilities increased to $6,202 million . This reflects the establishment of $6,365 million of net contract liabilities upon the adoption, and $14,401 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 $1,728 million as a result of revenue recognition, and by $12,701 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. Remaining performance obligations ("RPO") are the aggregate amount of total contract transaction price that is unsatisfied or partially unsatisfied. As of June 30, 2018 , our total RPO is $103.4 billion . Of this total, we expect approximately 45% will be recognized as sales over the following 24 months.

Earnings Per Share

Earnings Per Share	6 Months Ended
	Jun. 30, 2018
Earnings Per Share [Abstract]
Earnings Per Share [Text Block]	Earnings Per Share Quarter Ended June 30, Six Months Ended June 30, (dollars in millions, except per share amounts; shares in millions) 2018 2017 2018 2017 Net income attributable to common shareowners $ 2,048 $ 1,439 $ 3,345 $ 2,825 Basic weighted average number of shares outstanding 790.5 788.7 790.2 791.1 Stock awards and equity units 9.1 9.5 9.8 9.3 Diluted weighted average number of shares outstanding 799.6 798.2 800.0 800.4 Earnings Per Share of Common Stock: Basic $ 2.59 $ 1.83 $ 4.23 $ 3.57 Diluted $ 2.56 $ 1.80 $ 4.18 $ 3.53 The computation of diluted earnings per share excludes the effect of the potential exercise of stock awards, including stock appreciation rights and stock options, when the average market price of the common stock is lower than the exercise price of the related stock awards during the period because the effect would be anti-dilutive. For both the quarter and six months ended June 30, 2018 , the number of stock awards excluded from the computation was approximately 5.1 million . For the quarter and six months ended June 30, 2017 , the number of stock awards excluded from the computation was approximately 5.8 million and 6.4 million , respectively.

Inventories and Contracts in Pr

Inventories and Contracts in Progress	6 Months Ended
	Jun. 30, 2018
Inventory Disclosure [Abstract]
Inventories and Contracts in Progress [Text Block]	Inventories and Contracts in Progress (dollars in millions) June 30, 2018 December 31, 2017 Raw materials $ 2,298 $ 2,038 Work-in-process 2,306 3,366 Finished goods 4,375 3,845 Contracts in progress — 10,205 8,979 19,454 Less: Progress payments, secured by lien, on U.S. Government contracts — (236 ) Billings on contracts in progress — (9,337 ) $ 8,979 $ 9,881 Inventories as of December 31, 2017 include capitalized contract development costs of $127 million related to certain aerospace programs at UTC Aerospace Systems. Upon adoption of the New Revenue Standard, these costs are recorded as contract fulfillment costs included in Other assets. Prior to the adoption of the New Revenue Standard, within our commercial aerospace business, inventory costs attributable to new engine offerings were recognized based on the average cost per unit expected over the life of each contract using the units-of-delivery method of percentage of completion accounting. Under this method, costs of initial engine deliveries in excess of the projected contract per unit average cost were capitalized and these capitalized amounts were subsequently expensed as additional engines are delivered for engines with costs below the projected contract per unit average cost over the life of the contract. As of December 31, 2017 , inventory included $438 million of such capitalized amounts. Upon adoption of the New Revenue Standard, these amounts are no longer included in inventory. In addition, amounts previously reported as Contracts in progress have been reclassified as contract assets in accordance with the New Revenue Standard.

Borrowings and Lines of Credit

Borrowings and Lines of Credit	6 Months Ended
	Jun. 30, 2018
Debt Disclosure [Abstract]
Borrowings and Lines of Credit [Text Block]	Borrowings and Lines of Credit (dollars in millions) June 30, 2018 December 31, 2017 Commercial paper $ 876 $ 300 Other borrowings 109 92 Total short-term borrowings $ 985 $ 392 At June 30, 2018 , we had revolving credit agreements with various banks permitting aggregate borrowings of up to $4.35 billion , pursuant to a $2.20 billion revolving credit agreement and a $2.15 billion multicurrency revolving credit agreement, both of which expire in August 2021 . As of June 30, 2018 , there were no borrowings under either of these agreements. The undrawn portions of these revolving credit agreements are also available to serve as backup facilities for the issuance of commercial paper. As of June 30, 2018 , our maximum commercial paper borrowing limit was $4.35 billion . Commercial paper borrowings at June 30, 2018 include approximately €750 million ( $876 million ) of euro-denominated commercial paper. We use our commercial paper borrowings for general corporate purposes, including the funding of potential acquisitions, pension contributions, debt refinancing, dividend payments and repurchases of our common stock. The need for commercial paper borrowings arises when the use of domestic cash for general corporate purposes exceeds the sum of domestic cash generation and foreign cash repatriated to the U.S. On May 18, 2018 , we issued €750 million aggregate principal amount of 1.150% senior notes due 2024 , €500 million aggregate principal amount of 2.150% senior notes maturing 2030 and €750 million aggregate principal amount of senior floating rate notes maturing 2020 . The net proceeds received from these debt issuances were used for general corporate purposes. On May 4, 2018 , we repaid at maturity approximately $1.1 billion aggregate principal amount of 1.778% junior subordinated notes. On February 1, 2018 , we repaid at maturity the $99 million 6.80% notes due in 2018 and on February 22, 2018 , we repaid at maturity the €750 million EURIBOR plus 0.80% floating rate notes due in 2018. In connection with the merger agreement with Rockwell Collins announced on September 4, 2017, we have entered into a $6.5 billion 364-day unsecured bridge loan credit agreement that would be funded only to the extent certain anticipated debt issuances are not completed prior to the completion of the merger. See Note 1 for additional discussion. Long-term debt consisted of the following: (dollars in millions) June 30, 2018 December 31, 2017 6.800% notes due 2018 $ — $ 99 EURIBOR plus 0.800% floating rate notes due 2018 (€750 million principal value) 2 — 890 1.778% junior subordinated notes due 2018 — 1,100 LIBOR plus 0.350% floating rate notes due 2019 3 350 350 1.500% notes due 2019 1 650 650 EURIBOR plus 0.15% floating rate notes due 2019 (€750 million principal value) 2 876 890 8.875% notes due 2019 271 271 4.875% notes due 2020 1 171 171 4.500% notes due 2020 1 1,250 1,250 1.900% notes due 2020 1 1,000 1,000 EURIBOR plus 0.20% floating rate notes due 2020 (€750 million principal value) 2 876 — 8.750% notes due 2021 250 250 1.950% notes due 2021 1 750 750 1.125% notes due 2021 (€950 million principal value) 1 1,110 1,127 2.300% notes due 2022 1 500 500 3.100% notes due 2022 1 2,300 2,300 1.250% notes due 2023 (€750 million principal value) 1 876 890 2.800% notes due 2024 1 800 800 1.150% notes due 2024 (€750 million principal value) 1 876 — 1.875% notes due 2026 (€500 million principal value) 1 584 593 2.650% notes due 2026 1 1,150 1,150 3.125% notes due 2027 1 1,100 1,100 7.100% notes due 2027 141 141 6.700% notes due 2028 400 400 7.500% notes due 2029 1 550 550 2.150% notes due 2030 (€500 million principal value) 1 584 — 5.400% notes due 2035 1 600 600 6.050% notes due 2036 1 600 600 6.800% notes due 2036 1 134 134 7.000% notes due 2038 159 159 6.125% notes due 2038 1 1,000 1,000 5.700% notes due 2040 1 1,000 1,000 4.500% notes due 2042 1 3,500 3,500 4.150% notes due 2045 1 850 850 3.750% notes due 2046 1 1,100 1,100 4.050% notes due 2047 1 600 600 Project financing obligations 206 158 Other (including capitalized leases) 197 195 Total principal long-term debt 27,361 27,118 Other (fair market value adjustments and discounts) (37 ) (25 ) Total long-term debt 27,324 27,093 Less: current portion 78 2,104 Long-term debt, net of current portion $ 27,246 $ 24,989 1 We may redeem these notes at our option pursuant to their terms. 2 The three-month EURIBOR rate as of June 30, 2018 was approximately -0.321%. The notes may be redeemed at our option in whole, but not in part, at any time in the event of certain developments affecting U.S. taxation. 3 The three-month LIBOR rate as of June 30, 2018 was approximately 2.336%. The average maturity of our long-term debt at June 30, 2018 is approximately 11 years . The average interest expense rate on our total borrowings for the quarter and six months ended June 30, 2018 and 2017 were as follows: Quarter Ended June 30, Six Months Ended June 30, 2018 2017 2018 2017 Average interest expense rate 3.5 % 3.6 % 3.5 % 3.6 % We have an existing universal shelf registration statement filed with the Securities and Exchange Commission (SEC) for an indeterminate amount of equity and debt securities for future issuances, subject to our internal limitations on the amount of equity and debt to be issued under this shelf registration statement.

Income Taxes

Income Taxes	6 Months Ended
	Jun. 30, 2018
Income Tax Disclosure [Abstract]
Income Tax Disclosure [Text Block]	Income Taxes On December 22, 2017 Public Law 115-97 “An Act to Provide for Reconciliation Pursuant to Titles II and V of the Concurrent Resolution on the Budget for Fiscal Year 2018” was enacted. This law is commonly referred to as the Tax Cuts and Jobs Act of 2017 (TCJA). In accordance with Staff Accounting Bulletin 118 (SAB 118) issued on December 22, 2017, the U.S. income tax amounts recorded attributable to the TCJA’s deemed repatriation provision, the revaluation of U.S. deferred taxes and the tax consequences relating to states with current conformity to the Internal Revenue Code are provisional amounts. Due to the enactment date and tax complexities of the TCJA, the Company has not completed its accounting related to these items. Prior to enactment of the TCJA, with few exceptions, U.S. income taxes had not been provided on undistributed earnings of UTC's international subsidiaries as the Company had intended to reinvest such earnings permanently outside the U.S. or to repatriate such earnings only when it was tax effective to do so. The Company continues to evaluate the impact of the TCJA on its existing accounting position related to the undistributed earnings. Due to the inherent complexities in determining any incremental U.S. Federal and State taxes and the non-U.S. taxes that may be due if all of these earnings were remitted to the U.S. and as provided for by SAB 118 this evaluation has not yet been completed and no provisional amount has been recorded in regard to the undistributed amounts. After completing its evaluation, the Company will accrue any additional taxes due on previously undistributed earnings to be distributed in the future. The Company will continue to accumulate and refine the relevant data and computational elements needed to finalize its accounting for the effects of the TCJA by December 22, 2018. We conduct business globally and, as a result, UTC or one or more of our subsidiaries files income tax returns in the U.S. federal jurisdiction and various state and foreign jurisdictions. In the normal course of business we are subject to examination by taxing authorities throughout the world, including such major jurisdictions as Australia, Belgium, Brazil, Canada, China, France, Germany, Hong Kong, India, Italy, Japan, Mexico, Netherlands, Poland, Singapore, South Korea, Spain, Switzerland, the United Kingdom, and the United States. With few exceptions, we are no longer subject to U.S. federal, state and local, or non-U.S. income tax examinations for years before 2006. In the ordinary course of business, there is inherent uncertainty in quantifying our income tax positions. We assess our income tax positions and record tax benefits for all years subject to examination based upon management’s evaluation of the facts, circumstances, and information available at the reporting date. It is reasonably possible that a net reduction within the range of $ 50 million to $ 625 million of unrecognized tax benefits may occur within the next 12 months as a result of additional worldwide uncertain tax positions, the closure of tax statutes, or the revaluation of current uncertain tax positions arising from the issuance of legislation, regulatory or other guidance or developments in examinations, in appeals, or in the courts. The range of potential change includes provisional amounts related to the TCJA based on currently available information. See Note 15, Contingent Liabilities, for discussion regarding uncertain tax positions, included in the above range, related to pending litigation with respect to certain deductions claimed in Germany. The Examination Division of the Internal Revenue Service is currently auditing UTC tax years 2014, 2015 and 2016, and the audit is expected to continue beyond 2018.

Employee Benefit Plans

Employee Benefit Plans	6 Months Ended
	Jun. 30, 2018
Retirement Benefits [Abstract]
Pension and Other Postretirement Benefits Disclosure [Text Block]	Employee Benefit Plans Pension and Postretirement Plans. We sponsor both funded and unfunded domestic and foreign defined pension and other postretirement benefit plans, and defined contribution plans. In March 2017, the FASB issued ASU 2017-07, Compensation-Retirement Benefits (Topic 715), Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost . This ASU requires an employer to report the service cost component of net periodic pension benefit cost in the same line item or items as other compensation costs arising from services rendered by the pertinent employees during the period, with other cost components presented separately from the service cost component and outside of income from operations. This ASU also allows only the service cost component of net periodic pension benefit cost to be eligible for capitalization when applicable. This ASU was effective for years beginning after December 15, 2017. The Company adopted this standard on January 1, 2018 applying the presentation requirements retrospectively. We elected to apply the practical expedient, which allows us to reclassify amounts disclosed previously in the employee benefit plans note as the basis for applying retrospective presentation for comparative periods as it is impracticable to determine the disaggregation of the cost components for amounts capitalized and amortized in those periods. Provisions related to presentation of the service cost component eligibility for capitalization were applied prospectively. The effect of the retrospective presentation change related to the net periodic benefit cost of our defined benefit pension and postretirement plans on our condensed consolidated statement of operations was as follows: Quarter Ended June 30, 2017 (dollars in millions) Previously Reported Effect of Change Higher/(Lower) As Revised Cost of product sold $ 7,907 $ 50 $ 7,957 Cost of services sold 3,193 14 3,207 Research and development 609 10 619 Selling, general and administrative 1,538 52 1,590 Non-service pension (benefit) — (126 ) (126 ) Six Months Ended June 30, 2017 (dollars in millions) Previously Reported Effect of Change Higher/(Lower) As Revised Cost of product sold 15,170 98 15,268 Cost of services sold 6,007 25 6,032 Research and development 1,186 19 1,205 Selling, general and administrative 3,020 107 3,127 Non-service pension (benefit) — (249 ) (249 ) Contributions to our plans were as follows: Quarter Ended June 30, Six Months Ended June 30, (dollars in millions) 2018 2017 2018 2017 Defined benefit plans $ 22 $ 33 $ 59 $ 79 Defined contribution plans 105 86 199 176 There were no contributions to our domestic defined benefit pension plans in the quarter and six months ended June 30, 2018 and 2017 . The following table illustrates the components of net periodic benefit cost for our defined pension and other postretirement benefit plans: Pension Benefits Other Postretirement Benefits (dollars in millions) 2018 2017 2018 2017 Service cost $ 93 $ 93 $ — $ 1 Interest cost 278 279 6 6 Expected return on plan assets (562 ) (541 ) — — Amortization of prior service credit (10 ) (9 ) (1 ) — Recognized actuarial net loss (gain) 101 143 (2 ) (2 ) Net settlement and curtailment gain (2 ) (2 ) — — Total net periodic benefit (income) cost $ (102 ) $ (37 ) $ 3 $ 5 Pension Benefits Six Months Ended June 30, Other Postretirement Benefits Six Months Ended June 30, (dollars in millions) 2018 2017 2018 2017 Service cost $ 186 $ 186 $ 1 $ 2 Interest cost 557 557 12 13 Expected return on plan assets (1,125 ) (1,081 ) — — Amortization of prior service credit (20 ) (18 ) (2 ) — Recognized actuarial net loss (gain) 202 286 (4 ) (5 ) Net settlement and curtailment gain (3 ) (1 ) — — Total net periodic benefit (income) cost $ (203 ) $ (71 ) $ 7 $ 10 As approved in 2016, effective January 1, 2017, a voluntary lump-sum option is available for the frozen final average earnings benefits of certain U.S. salaried employees upon termination of employment after 2016. This option provides participants with the choice of electing to receive a lump-sum payment in lieu of receiving a future monthly pension benefit. This plan change reduced the projected benefit obligation by $170 million as of December 31, 2016.

Restructuring and Other Costs

Restructuring and Other Costs	6 Months Ended
	Jun. 30, 2018
Restructuring and Related Activities [Abstract]
Restructuring and Other Costs [Text Block]	Restructuring Costs During the six months ended June 30, 2018 , we recorded net pre-tax restructuring costs totaling $149 million for new and ongoing restructuring actions. We recorded charges in the segments as follows: (dollars in millions) Otis $ 47 UTC Climate, Controls & Security 35 Pratt & Whitney 3 UTC Aerospace Systems 60 Eliminations and other 4 Total $ 149 Restructuring charges incurred during the six months ended June 30, 2018 primarily relate to actions initiated during 2018 and 2017 , and were recorded as follows: (dollars in millions) Cost of sales $ 86 Selling, general and administrative 65 Non-service pension (benefit) (2 ) Total $ 149 2018 Actions . During the six months ended June 30, 2018 , we recorded net pre-tax restructuring costs of $73 million , comprised of $38 million in cost of sales, $37 million in selling, general and administrative expenses, and $2 million in non-service pension benefit. The 2018 actions relate to ongoing cost reduction efforts, including workforce reductions and the consolidation of field and manufacturing operations. We are targeting to complete the majority of the remaining workforce and facility related cost reduction actions during 2018 and 2019 . No specific plans for other significant actions have been finalized at this time. The following table summarizes the accrual balance and utilization for the 2018 restructuring actions for the quarter and six months ended June 30, 2018 : (dollars in millions) Severance Facility Exit, Lease Termination and Other Costs Total Quarter Ended June 30, 2018 Restructuring accruals at March 31, 2018 $ 8 $ — $ 8 Net pre-tax restructuring costs 60 1 61 Utilization and foreign exchange (20 ) (1 ) (21 ) Balance at June 30, 2018 $ 48 $ — $ 48 Six Months Ended June 30, 2018 Net pre-tax restructuring costs $ 71 $ 2 $ 73 Utilization and foreign exchange (23 ) (2 ) (25 ) Balance at June 30, 2018 $ 48 $ — $ 48 The following table summarizes expected, incurred and remaining costs for the 2018 restructuring actions by segment: (dollars in millions) Expected Costs Costs Incurred Quarter Ended March 31, 2018 Costs Incurred Quarter Ended June 30, 2018 Remaining Costs at June 30, 2018 Otis $ 31 $ (9 ) $ (18 ) $ 4 UTC Climate, Controls & Security 77 (1 ) (23 ) 53 Pratt & Whitney 3 — (3 ) — UTC Aerospace Systems 20 — (15 ) 5 Eliminations and other 4 (2 ) (2 ) — Total $ 135 $ (12 ) $ (61 ) $ 62 2017 Actions . During the six months ended June 30, 2018 , we recorded net pre-tax restructuring costs totaling $67 million for restructuring actions initiated in 2017 , including $42 million in cost of sales and $25 million in selling, general and administrative expenses. The 2017 actions relate to ongoing cost reduction efforts, including workforce reductions, consolidation of field operations, and costs to exit legacy programs. The following table summarizes the accrual balances and utilization for the 2017 restructuring actions for the quarter and six months ended June 30, 2018 : (dollars in millions) Severance Facility Exit, Lease Termination and Other Costs Total Quarter Ended June 30, 2018 Restructuring accruals at March 31, 2018 $ 88 $ (2 ) $ 86 Net pre-tax restructuring costs 8 8 16 Utilization and foreign exchange (23 ) (9 ) (32 ) Balance at June 30, 2018 $ 73 $ (3 ) $ 70 Six Months Ended June 30, 2018 Restructuring accruals at December 31, 2017 $ 84 $ 1 $ 85 Net pre-tax restructuring costs 47 20 67 Utilization and foreign exchange (58 ) (24 ) (82 ) Balance at June 30, 2018 $ 73 $ (3 ) $ 70 The following table summarizes expected, incurred and remaining costs for the 2017 restructuring actions by segment: (dollars in millions) Expected Costs Costs Incurred in 2017 Costs Incurred Quarter Ended March 31, 2018 Costs Incurred Quarter Ended June 30, 2018 Remaining Costs at June 30, 2018 Otis $ 73 $ (43 ) $ (15 ) $ (4 ) $ 11 UTC Climate, Controls & Security 81 (76 ) (7 ) 5 3 Pratt & Whitney 7 (7 ) — — — UTC Aerospace Systems 157 (43 ) (29 ) (17 ) 68 Eliminations and other 7 (7 ) — — — Total $ 325 $ (176 ) $ (51 ) $ (16 ) $ 82 2016 and Prior Actions. During the six months ended June 30, 2018 , we recorded net pre-tax restructuring costs totaling $9 million for restructuring actions initiated in 2016 and prior. As of June 30, 2018 , we have approximately $91 million of accrual balances remaining related to 2016 and prior actions.

Financial Instruments

Financial Instruments	6 Months Ended
	Jun. 30, 2018
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative Financial Instruments [Text Block]	Financial Instruments We enter into derivative instruments primarily for risk management purposes, including derivatives designated as hedging instruments under the Derivatives and Hedging Topic of the FASB ASC and those utilized as economic hedges. We operate internationally and, in the normal course of business, are exposed to fluctuations in interest rates, foreign exchange rates and commodity prices. These fluctuations can increase the costs of financing, investing and operating the business. We have used derivative instruments, including swaps, forward contracts and options, to manage certain foreign currency, interest rate and commodity price exposures. The four quarter rolling average of the notional amount of foreign exchange contracts hedging foreign currency transactions was $20.5 billion and $19.1 billion at June 30, 2018 and December 31, 2017 , respectively. The following table summarizes the fair value and presentation in the Condensed Consolidated Balance Sheets for derivative instruments as of June 30, 2018 and December 31, 2017 : (dollars in millions) Balance Sheet Location June 30, 2018 December 31, 2017 Derivatives designated as hedging instruments: Foreign exchange contracts Asset Derivatives: Other assets, current $ 23 $ 77 Other assets 27 101 Total asset derivatives $ 50 $ 178 Liability Derivatives: Accrued liabilities (43 ) (10 ) Other long-term liabilities (75 ) (8 ) Total liability derivatives $ (118 ) $ (18 ) Derivatives not designated as hedging instruments: Foreign exchange contracts Asset Derivatives: Other assets, current 39 70 Other assets 22 5 Total asset derivatives $ 61 $ 75 Liability Derivatives: Accrued liabilities (93 ) (57 ) Other long-term liabilities (3 ) (3 ) Total liability derivatives $ (96 ) $ (60 ) The effect of cash flow hedging relationships on accumulated other comprehensive income for the quarter and six months ended June 30, 2018 and 2017 are presented in the table below. The amounts of gain or (loss) are attributable to foreign exchange contract activity and are recorded as a component of Product sales when reclassified from accumulated other comprehensive income. Quarter Ended June 30, Six Months Ended June 30, (dollars in millions) 2018 2017 2018 2017 Gain (loss) recorded in Accumulated other comprehensive loss $ (245 ) $ 66 $ (200 ) $ 130 (Gain) loss reclassified from Accumulated other comprehensive loss into Product sales (1 ) 5 (28 ) 10 The table above reflects the effect of cash flow hedging relationships on the Condensed Consolidated Statements of Operations for the quarter and six months ended June 30, 2018 and 2017 . The Company utilizes the critical terms match method in assessing derivatives for hedge effectiveness. Accordingly, the hedged items and derivatives designated as hedging instruments are highly effective. We have approximately €4.95 billion of euro-denominated long-term debt and €750 million of euro-denominated commercial paper borrowings outstanding, which qualify as a net investment hedge against our investments in European businesses . As of June 30, 2018, the net investment hedge is deemed to be effective. Assuming current market conditions continue, a $33 million pre-tax loss is expected to be reclassified from Accumulated other comprehensive loss into Product sales to reflect the fixed prices obtained from foreign exchange hedging within the next 12 months. At June 30, 2018 , all derivative contracts accounted for as cash flow hedges will mature by July 2022 . The effect of derivatives not designated as hedging instruments that is included below within Other income, net, on the Condensed Consolidated Statement of Operations was as follows: Quarter Ended June 30, Six Months Ended June 30, (dollars in millions) 2018 2017 2018 2017 Foreign exchange contracts $ 19 $ 28 $ 70 $ 40

Fair Value Measurements

Fair Value Measurements	6 Months Ended
	Jun. 30, 2018
Fair Value Disclosures [Abstract]
Fair Value Disclosures [Text Block]	Fair Value Measurements In accordance with the provisions of ASC 820, the following tables provide the valuation hierarchy classification of assets and liabilities that are carried at fair value and measured on a recurring and nonrecurring basis in our Condensed Consolidated Balance Sheet as of June 30, 2018 and December 31, 2017 : June 30, 2018 (dollars in millions) Total Level 1 Level 2 Level 3 Recurring fair value measurements: Available-for-sale securities $ 42 $ 42 $ — $ — Derivative assets 111 — 111 — Derivative liabilities (214 ) — (214 ) — December 31, 2017 (dollars in millions) Total Level 1 Level 2 Level 3 Recurring fair value measurements: Available-for-sale securities $ 64 $ 64 $ — $ — Derivative assets 253 — 253 — Derivative liabilities (78 ) — (78 ) — Valuation Techniques. Our available-for-sale securities include equity investments that are traded in active markets, either domestically or internationally, and are measured at fair value using closing stock prices from active markets. Our derivative assets and liabilities include foreign exchange contracts that are measured at fair value using internal models based on observable market inputs such as forward rates, interest rates, our own credit risk and our counterparties' credit risks. As of June 30, 2018 , there were no significant transfers in or out of Level 1 and Level 2. As of June 30, 2018 , there has not been any significant impact to the fair value of our derivative liabilities due to our own credit risk. Similarly, there has not been any significant adverse impact to our derivative assets based on our evaluation of our counterparties' credit risks. The following table provides carrying amounts and fair values of financial instruments that are not carried at fair value in our Condensed Consolidated Balance Sheet at June 30, 2018 and December 31, 2017 : June 30, 2018 December 31, 2017 (dollars in millions) Carrying Amount Fair Value Carrying Amount Fair Value Long-term receivables $ 132 $ 122 $ 127 $ 121 Customer financing notes receivable 577 554 609 596 Short-term borrowings (985 ) (985 ) (392 ) (392 ) Long-term debt (excluding capitalized leases) (27,301 ) (27,755 ) (27,067 ) (29,180 ) Long-term liabilities (307 ) (271 ) (362 ) (330 ) The following table provides the valuation hierarchy classification of assets and liabilities that are not carried at fair value in our Condensed Consolidated Balance Sheet at June 30, 2018 and December 31, 2017 : June 30, 2018 (dollars in millions) Total Level 1 Level 2 Level 3 Long-term receivables $ 122 $ — $ 122 $ — Customer financing notes receivable 554 — 554 — Short-term borrowings (985 ) — (876 ) (109 ) Long-term debt (excluding capitalized leases) (27,755 ) — (27,496 ) (259 ) Long-term liabilities (271 ) — (271 ) — December 31, 2017 (dollars in millions) Total Level 1 Level 2 Level 3 Long-term receivables $ 121 $ — $ 121 $ — Customer financing notes receivable 596 — 596 — Short-term borrowings (392 ) — (300 ) (92 ) Long-term debt (excluding capitalized leases) (29,180 ) — (28,970 ) (210 ) Long-term liabilities (330 ) — (330 ) — We had commercial aerospace financing and other contractual commitments totaling approximately $15.2 billion and $15.3 billion as of June 30, 2018 and December 31, 2017 , respectively, related to commercial aircraft and certain contractual rights to provide product on new aircraft platforms. Associated risks on these commitments from changes in interest rates are mitigated because interest rates are variable during the commitment term and are set at the date of funding based on current market conditions, the fair value of the underlying collateral and the credit worthiness of the customers. As a result, the fair value of these financings is expected to equal the amounts funded.

Long-Term Financing Receivables

Long-Term Financing Receivables	6 Months Ended
	Jun. 30, 2018
Receivables [Abstract]
Long-Term Financing Receivables [Text Block]	Long-Term Financing Receivables Our long-term financing receivables primarily represent balances related to our aerospace businesses, such as long-term trade accounts receivable, notes receivable, and leases receivable. We also have other long-term receivables related to our commercial businesses; however, both the individual and aggregate amounts of those other receivables are not significant. Prior to the adoption of the New Revenue Standard, long-term trade accounts receivable, including unbilled receivables related to long-term aftermarket contracts, were principally amounts arising from the sale of goods and the delivery of services with a contract maturity date or realization period of greater than one year and were recognized as "Other assets" in our Condensed Consolidated Balance Sheet. With the adoption of the New Revenue Standard, these unbilled receivables are classified as non-current contract assets and are recognized as "Other assets" in our Condensed Consolidated Balance Sheet. Notes and leases receivable represent notes and lease receivables other than receivables related to operating leases, and are recognized as "Customer financing assets" in our Condensed Consolidated Balance Sheet. The following table summarizes the balance by class of aerospace business related long-term receivables as of June 30, 2018 and December 31, 2017 . (dollars in millions) June 30, 2018 December 31, 2017 Long-term trade accounts receivable $ 71 $ 973 Notes and leases receivable 435 424 Total long-term receivables $ 506 $ 1,397 Customer credit ratings range from customers with an extremely strong capacity to meet financial obligations to customers whose uncollateralized receivables are in default. There can be no assurance that actual results will not differ from estimates or that consideration of these factors in the future will not result in an increase or decrease to the allowance for credit losses on long-term receivables. The decrease in Long-term trade accounts receivable from December 31, 2017 is primarily driven by the reclassification of unbilled receivables related to long-term aftermarket contracts to contract assets in accordance with the New Revenue Standard as described above. Based upon the customer credit ratings, approximately $140 million and $170 million of our total long-term receivables were considered to bear high credit risk as of June 30, 2018 and December 31, 2017 , respectively. For long-term trade accounts receivable, we evaluate credit risk and collectability individually to determine if an allowance is necessary. Our long-term receivables reflected in the table above, which include reserves of $17 million as of both June 30, 2018 and December 31, 2017 , are individually evaluated for impairment. At June 30, 2018 and December 31, 2017 , we did not have any significant balances that are considered to be delinquent, on non-accrual status, past due 90 days or more, or are considered to be unrecoverable.

Shareowners' Equity and Noncont

Shareowners' Equity and Noncontrolling Interest	6 Months Ended
	Jun. 30, 2018
Stockholders' Equity Note [Abstract]
Shareowners' Equity and Noncontrolling Interest [Text Block]	Shareowners' Equity and Noncontrolling Interest A summary of the changes in shareowners' equity and noncontrolling interest comprising total equity for the quarter and six months ended June 30, 2018 and 2017 is provided below: Quarter Ended June 30, 2018 2017 (dollars in millions) Share-owners' Equity Non-controlling Interest Total Equity Share-owners' Non-controlling Interest Total Equity Equity, beginning of period $ 30,534 $ 1,958 $ 32,492 $ 27,594 $ 1,678 $ 29,272 Comprehensive (loss) income for the period: Net income 2,048 91 2,139 1,439 93 1,532 Total other comprehensive (loss) income (747 ) (38 ) (785 ) 369 18 387 Total comprehensive income for the period 1,301 53 1,354 1,808 111 1,919 Common Stock issued under employee plans 110 — 110 91 — 91 Common Stock repurchased (27 ) — (27 ) (437 ) — (437 ) Dividends on Common Stock (535 ) — (535 ) (503 ) — (503 ) Dividends on ESOP Common Stock (17 ) — (17 ) (17 ) — (17 ) Dividends attributable to noncontrolling interest — (73 ) (73 ) — (64 ) (64 ) Capital contributions — 42 42 — — — Purchase of subsidiary shares from noncontrolling interest, net — — — (1 ) (4 ) (5 ) Redeemable noncontrolling interest fair value adjustment — — — (94 ) — (94 ) Other (2 ) 2 — 1 (8 ) (7 ) Equity, end of period $ 31,364 $ 1,982 $ 33,346 $ 28,442 $ 1,713 $ 30,155 Six Months Ended June 30, 2018 2017 (Dollars in millions) Share-owners' Non-controlling Interest Total Equity Share-owners' Non-controlling Interest Total Equity Equity, beginning of period $ 29,610 $ 1,811 $ 31,421 $ 27,579 $ 1,590 $ 29,169 Comprehensive (loss) income for the period: Net income 3,345 162 3,507 2,825 175 3,000 Total other comprehensive (loss) income (159 ) (5 ) (164 ) 370 43 413 Total comprehensive income for the period 3,186 157 3,343 3,195 218 3,413 Common Stock issued under employee plans 181 — 181 170 — 170 Common Stock repurchased (52 ) — (52 ) (1,370 ) — (1,370 ) Dividends on Common Stock (1,070 ) — (1,070 ) (1,008 ) — (1,008 ) Dividends on ESOP Common Stock (35 ) — (35 ) (35 ) — (35 ) Dividends attributable to noncontrolling interest — (139 ) (139 ) — (112 ) (112 ) Capital contributions — 162 162 — 43 43 Purchase of subsidiary shares from noncontrolling interest, net (1 ) (1 ) (2 ) (1 ) (5 ) (6 ) Disposition of noncontrolling interest — (8 ) (8 ) — — — Redeemable noncontrolling interest fair value adjustment (2 ) — (2 ) (95 ) — (95 ) New Revenue Standard adoption impact (480 ) — (480 ) — — — Other 27 — 27 7 (21 ) (14 ) Equity, end of period $ 31,364 $ 1,982 $ 33,346 $ 28,442 $ 1,713 $ 30,155 A summary of the changes in each component of Accumulated other comprehensive (loss) income, net of tax for the quarter and six months ended June 30, 2018 and 2017 is provided below: (dollars in millions) Foreign Currency Translation Defined Benefit Pension and Post- retirement Plans Unrealized Gains (Losses) on Available-for-Sale Securities Unrealized Hedging (Losses) Gains Accumulated Other Comprehensive (Loss) Income Quarter Ended June 30, 2018 Balance at March 31, 2018 $ (2,444 ) $ (4,579 ) $ — $ 86 $ (6,937 ) Other comprehensive income (loss) before (564 ) 18 — (245 ) (791 ) Amounts reclassified, pre-tax (3 ) 88 — (1 ) 84 Tax (benefit) expense reclassified (74 ) (26 ) — 60 (40 ) Balance at June 30, 2018 $ (3,085 ) $ (4,499 ) $ — $ (100 ) $ (7,684 ) Six Months Ended June 30, 2018 Balance at December 31, 2017 $ (2,950 ) $ (4,652 ) $ 5 $ 72 $ (7,525 ) Other comprehensive income (loss) before (188 ) 26 — (200 ) (362 ) Amounts reclassified, pre-tax (3 ) 176 — (28 ) 145 Tax (benefit) expense reclassified 56 (49 ) — 56 63 ASU 2016-01 adoption impact — — (5 ) — (5 ) Balance at June 30, 2018 $ (3,085 ) $ (4,499 ) $ — $ (100 ) $ (7,684 ) (dollars in millions) Foreign Currency Translation Defined Benefit Pension and Post- retirement Plans Unrealized Gains (Losses) on Available-for-Sale Securities Unrealized Hedging (Losses) Gains Accumulated Other Comprehensive (Loss) Income Quarter Ended June 30, 2017 Balance at March 31, 2017 $ (3,359 ) $ (4,962 ) $ 96 $ (108 ) $ (8,333 ) Other comprehensive income (loss) before 231 (2 ) 20 50 299 Amounts reclassified, pre-tax — 132 (24 ) 5 113 Tax (benefit) expense reclassified — (50 ) 8 (1 ) (43 ) Balance at June 30, 2017 $ (3,128 ) $ (4,882 ) $ 100 $ (54 ) $ (7,964 ) Six Months Ended June 30, 2017 Balance at December 31, 2016 $ (3,480 ) $ (5,045 ) $ 353 $ (162 ) $ (8,334 ) Other comprehensive income (loss) before 352 (2 ) (1 ) 100 449 Amounts reclassified, pre-tax — 263 (407 ) 10 (134 ) Tax (benefit) expense reclassified — (98 ) 155 (2 ) 55 Balance at June 30, 2017 $ (3,128 ) $ (4,882 ) $ 100 $ (54 ) $ (7,964 ) In January 2016, the FASB issued ASU 2016-01, Financial Instruments - Overall: Recognition and Measurement of Financial Assets and Financial Liabilities . This ASU modifies how entities measure equity investments and present changes in the fair value of financial liabilities. Upon adoption, investments that do not result in consolidation and are not accounted for under the equity method generally must be carried at fair value, with changes in fair value recognized in net income. We had approximately $5 million of unrealized gains on these securities recorded in Accumulated other comprehensive loss in our Consolidated Balance Sheet as of December 31, 2017. We adopted this standard effective January 1, 2018, with these amounts recorded directly to retained earnings as of that date. Amounts reclassified that relate to our defined benefit pension and postretirement plans include the amortization of prior service costs and actuarial net losses recognized during each period presented. These costs are recorded as components of net periodic pension cost for each period presented (see Note 7 for additional details). Amounts reclassified that relate to unrealized gains (losses) on available-for-sale securities, pre-tax includes approximately $380 million of previously unrealized gains reclassified to other income as a result of sales of significant investments in available-for-sale securities in the six months ended June 30, 2017, including UTC Climate, Controls & Security's sale of investments in Watsco, Inc. All noncontrolling interests with redemption features, such as put options, that are not solely within our control (redeemable noncontrolling interests) are reported in the mezzanine section of the Condensed Consolidated Balance Sheet, between liabilities and equity, at the greater of redemption value or initial carrying value.

Variable Interest Entities

Variable Interest Entities	6 Months Ended
	Jun. 30, 2018
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Variable Interest Entity Disclosure [Text Block]	Variable Interest Entities Pratt & Whitney holds a net 61% interest in the IAE International Aero Engines AG (IAE) collaboration with MTU Aero Engines AG (MTU) and Japanese Aero Engines Corporation (JAEC) and a 49.5% ownership interest in IAE. IAE's business purpose is to coordinate the design, development, manufacturing and product support of the V2500 program through involvement with the collaborators. Additionally, Pratt & Whitney, JAEC and MTU are participants in International Aero Engines, LLC (IAE LLC), whose business purpose is to coordinate the design, development, manufacturing and product support for the PW1100G-JM engine for the Airbus A320neo aircraft and the PW1400G-JM engine for the Irkut MC21 aircraft. Pratt & Whitney holds a 59% net interest and a 59% ownership interest in IAE LLC. IAE and IAE LLC retain limited equity with the primary economics of the programs passed to the participants. As such, we have determined that IAE and IAE LLC are variable interest entities with Pratt & Whitney the primary beneficiary. IAE and IAE LLC have, therefore, been consolidated. The carrying amounts and classification of assets and liabilities for variable interest entities in our Condensed Consolidated Balance Sheet are as follows: (dollars in millions) June 30, 2018 December 31, 2017 Current assets $ 4,127 $ 3,976 Noncurrent assets 1,360 1,534 Total assets $ 5,487 $ 5,510 Current liabilities $ 4,739 $ 3,601 Noncurrent liabilities 1,813 2,086 Total liabilities $ 6,552 $ 5,687

Guarantees

Guarantees	6 Months Ended
	Jun. 30, 2018
Service and Product Warranties and Product Performance Guarantees [Abstract]
Guarantees [Text Block]	Guarantees We extend a variety of financial, market value and product performance guarantees to third parties. There have been no material changes to guarantees outstanding since December 31, 2017 . The changes in the carrying amount of service and product warranties and product performance guarantees for the six months ended June 30, 2018 and 2017 are as follows: (dollars in millions) 2018 2017 Balance as of January 1 $ 1,146 $ 1,199 Warranties and performance guarantees issued 233 142 Settlements made (200 ) (120 ) Other (7 ) 13 Balance as of June 30 $ 1,172 $ 1,234

Contingent Liabilities

Contingent Liabilities	6 Months Ended
	Jun. 30, 2018
Commitments and Contingencies Disclosure [Abstract]
Contingent Liabilities [Text Block]	Contingent Liabilities Summarized below are the matters previously described in Note 18 of the Notes to the Consolidated Financial Statements in our 2017 Annual Report, incorporated by reference in our 2017 Form 10-K, updated as applicable. Except as otherwise noted, while we are unable to predict the final outcome, based on information currently available, we do not believe that resolution of any of the following matters will have a material adverse effect upon our competitive position, results of operations, cash flows or financial condition. Environmental. Our operations are subject to environmental regulation by federal, state and local authorities in the United States and authorities with jurisdiction over our foreign operations. As described in Note 1 to the Consolidated Financial Statements in our 2017 Annual Report, we have accrued for the costs of environmental remediation activities, including but not limited to investigatory, remediation, operating and maintenance costs and performance guarantees, and periodically reassess these amounts. We believe that the likelihood of incurring losses materially in excess of amounts accrued is remote. Additional information pertaining to environmental matters is included in Note 1 to the Consolidated Financial Statements in our 2017 Annual Report. Government. In the ordinary course of business, the Company and its subsidiaries and our properties are subject to regulatory and governmental examinations, information gathering requests, inquiries, investigations and threatened legal actions and proceedings. For example, we are now, and believe that, in light of the current U.S. Government contracting environment, we will continue to be the subject of one or more U.S. Government investigations. Such U.S. Government investigations often take years to complete and could result in administrative, civil or criminal liabilities, including repayments, fines, treble and other damages, forfeitures, restitution or penalties, or could lead to suspension or debarment of U.S. Government contracting or of export privileges. For instance, if we or one of our business units were charged with wrongdoing as a result of any of these investigations or other government investigations (including violations of certain anti-bribery, environmental or export laws) the U.S. Government could suspend us from bidding on or receiving awards of new U.S. Government contracts pending the completion of legal proceedings. If convicted or found liable, the U.S. Government could fine and debar us from new U.S. Government contracting for a period generally not to exceed three years. The U.S. Government also reserves the right to debar a contractor from receiving new government contracts for fraudulent, criminal or other seriously improper conduct. The U.S. Government could also void any contracts found to be tainted by fraud. Our contracts with the U.S. Government are also subject to audits. Like many defense contractors, we have received audit reports which recommend that certain contract prices should be reduced to comply with various government regulations, including because cost or pricing data we submitted in negotiation of the contract prices or cost accounting practices may not have conformed to government regulations, or that certain payments be delayed or withheld. Some of these audit reports involved substantial amounts. We have made voluntary refunds in those cases we believe appropriate, have settled some allegations and continue to litigate or challenge certain matters. In addition, we accrue for liabilities associated with those matters that are probable and can be reasonably estimated. The most likely settlement amount to be incurred is accrued based upon a range of estimates. Where no amount within a range of estimates is more likely, then we accrued the minimum amount. Legal Proceedings. Cost Accounting Standards Claim As previously disclosed, in December 2013, a Divisional Administrative Contracting Officer of the United States Defense Contract Management Agency asserted a claim against Pratt & Whitney to recover overpayments of approximately $177 million plus interest (approximately $76.5 million through June 30, 2018). The claim is based on Pratt & Whitney's alleged noncompliance with cost accounting standards from January 1, 2005 to December 31, 2012, due to its method of determining the cost of collaborator parts used in the calculation of material overhead costs for government contracts. On March 18, 2014, Pratt & Whitney filed an appeal to the Armed Services Board of Contract Appeals. Pratt & Whitney’s appeal is still pending and we continue to believe the government’s claim is without merit. German Tax Litigation As previously disclosed, UTC has been involved in administrative review proceedings with the German Tax Office, which concern approximately €215 million (approximately $252 million) of tax benefits that we have claimed related to a 1998 reorganization of the corporate structure of Otis operations in Germany. Upon audit, these tax benefits were disallowed by the German Tax Office. UTC estimates interest associated with the aforementioned tax benefits is an additional approximately €118 million (approximately $138 million). On August 3, 2012, we filed suit in the local German Tax Court (Berlin-Brandenburg). In March 2016, the local German Tax Court dismissed our suit, and we appealed this decision to the German Federal Tax Court (FTC). The FTC held a hearing on our appeal on July 24, 2018, and we expect it to issue a decision during the third quarter of 2018. In 2015, UTC made tax and interest payments to German tax authorities of €275 million (approximately $300 million) in order to avoid additional interest accruals pending final resolution of this matter. Asbestos Matters As previously disclosed, like many other industrial companies, we and our subsidiaries have been named as defendants in lawsuits alleging personal injury as a result of exposure to asbestos integrated into certain of our products or business premises. While we have never manufactured asbestos and no longer incorporate it in any currently-manufactured products, certain of our historical products, like those of many other manufacturers, have contained components incorporating asbestos. A substantial majority of these asbestos-related claims have been dismissed without payment or were covered in full or in part by insurance or other forms of indemnity. Additional cases were litigated and settled without any insurance reimbursement. The amounts involved in asbestos related claims were not material individually or in the aggregate in any year. Our estimated total liability to resolve all pending and unasserted potential future asbestos claims through 2059 is approximately $333 million and is principally recorded in Other long-term liabilities on our Condensed Consolidated Balance Sheet as of June 30, 2018 . This amount is on a pre-tax basis, not discounted, and excludes the Company’s legal fees to defend the asbestos claims (which will continue to be expensed by the Company as they are incurred). In addition, the Company has an insurance recovery receivable for probable asbestos related recoveries of approximately $146 million , which is included primarily in Other assets on our Condensed Consolidated Balance Sheet as of June 30, 2018 . The amounts recorded by UTC for asbestos-related liabilities and insurance recoveries are based on currently available information and assumptions that we believe are reasonable. Our actual liabilities or insurance recoveries could be higher or lower than those recorded if actual results vary significantly from the assumptions. Key variables in these assumptions include the number and type of new claims to be filed each year, the outcomes or resolution of such claims, the average cost of resolution of each new claim, the amount of insurance available, allocation methodologies, the contractual terms with each insurer with whom we have reached settlements, the resolution of coverage issues with other excess insurance carriers with whom we have not yet achieved settlements, and the solvency risk with respect to our insurance carriers. Other factors that may affect our future liability include uncertainties surrounding the litigation process from jurisdiction to jurisdiction and from case to case, legal rulings that may be made by state and federal courts, and the passage of state or federal legislation. At least annually, the Company evaluates all of these factors and, with input from an outside actuarial expert, makes any necessary adjustments to both our estimated asbestos liabilities and insurance recoveries. Other. As described in Note 14 of this Form 10-Q and Note 17 to the Consolidated Financial Statements in our 2017 Annual Report, we extend performance and operating cost guarantees beyond our normal warranty and service policies for extended periods on some of our products. We have accrued our estimate of the liability that may result under these guarantees and for service costs that are probable and can be reasonably estimated. We also have other commitments and contingent liabilities related to legal proceedings, self-insurance programs and matters arising out of the normal course of business. We accrue contingencies based upon a range of possible outcomes. If no amount within this range is a better estimate than any other, then we accrue the minimum amount. In the ordinary course of business, the Company and its subsidiaries are also routinely defendants in, parties to or otherwise subject to many pending and threatened legal actions, claims, disputes and proceedings. These matters are often based on alleged violations of contract, product liability, warranty, regulatory, environmental, health and safety, employment, intellectual property, tax and other laws. In some instances, claims for substantial monetary damages are asserted against the Company and its subsidiaries and could result in fines, penalties, compensatory or treble damages or non-monetary relief. We do not believe that these matters will have a material adverse effect upon our competitive position, results of operations, cash flows or financial condition.

Segment Financial Data

Segment Financial Data	6 Months Ended
	Jun. 30, 2018
Segment Reporting [Abstract]
Segment Reporting Disclosure [Text Block]	Note 16: Segment Financial Data Our operations are classified into four principal segments: Otis, UTC Climate, Controls & Security, Pratt & Whitney, and UTC Aerospace Systems. The segments are generally based on the management structure of the businesses and the grouping of similar operating companies, where each management organization has general operating autonomy over diversified products and services. As discussed in Note 7, 2017 amounts have been recast based on the adoption of ASU 2017-07. Total sales by segment include inter-segment sales, which are generally made at prices approximating those that the selling entity is able to obtain on external sales. Results for the quarters ended June 30, 2018 and 2017 are as follows: Net Sales Operating Profits Operating Profit Margins (dollars in millions) 2018 2017 2018 2017 2018 2017 Otis $ 3,344 $ 3,131 $ 488 $ 539 14.6 % 17.2 % UTC Climate, Controls & Security 5,035 4,712 1,645 837 32.7 % 17.8 % Pratt & Whitney 4,736 4,070 397 364 8.4 % 8.9 % UTC Aerospace Systems 3,962 3,640 569 534 14.4 % 14.7 % Total segments 17,077 15,553 3,099 2,274 18.1 % 14.6 % Eliminations and other (372 ) (273 ) (97 ) (5 ) General corporate expenses — — (126 ) (105 ) Consolidated $ 16,705 $ 15,280 $ 2,876 $ 2,164 17.2 % 14.2 % Results for the six months ended June 30, 2018 and 2017 are as follows: Net Sales Operating Profits Operating Profit Margins (dollars in millions) 2018 2017 2018 2017 2018 2017 Otis $ 6,381 $ 5,935 $ 938 $ 986 14.7 % 16.6 % UTC Climate, Controls & Security 9,411 8,604 2,237 1,768 23.8 % 20.5 % Pratt & Whitney 9,065 7,828 810 720 8.9 % 9.2 % UTC Aerospace Systems 7,779 7,251 1,157 1,065 14.9 % 14.7 % Total segments 32,636 29,618 5,142 4,539 15.8 % 15.3 % Eliminations and other (689 ) (523 ) (108 ) (23 ) General corporate expenses — — (230 ) (208 ) Consolidated $ 31,947 $ 29,095 $ 4,804 $ 4,308 15.0 % 14.8 % Geographic sales are attributed to the geographic regions based on their location of origin. Segment information for the quarter ended June 30, 2018 is as follows: (dollars in millions) Otis UTC Climate, Controls & Security Pratt & Whitney UTC Aerospace Systems Total Primary Geographical Markets United States $ 859 $ 2,618 $ 3,652 $ 2,776 $ 9,905 Europe 1,054 1,455 126 585 3,220 Asia Pacific 1,169 720 312 85 2,286 Other 262 242 646 516 1,666 Total segment $ 3,344 $ 5,035 $ 4,736 $ 3,962 17,077 Eliminations and other (372 ) Consolidated $ 16,705 Segment information for the six months ended June 30, 2018 is as follows: (dollars in millions) Otis UTC Climate, Controls & Security Pratt & Whitney UTC Aerospace Systems Total Primary Geographical Markets United States $ 1,704 $ 4,713 $ 6,773 $ 5,430 $ 18,620 Europe 2,059 2,839 299 1,192 6,389 Asia Pacific 2,091 1,405 680 169 4,345 Other 527 454 1,313 988 3,282 Total segment $ 6,381 $ 9,411 $ 9,065 $ 7,779 32,636 Eliminations and other (689 ) Consolidated $ 31,947 Segment sales disaggregated by product type and product versus service for the quarter ended June 30, 2018 are as follows: (dollars in millions) Otis UTC Climate, Controls & Security Pratt & Whitney UTC Aerospace Systems Total Product Type Commercial and industrial, non aerospace $ 3,344 $ 5,035 $ 5 $ 15 $ 8,399 Commercial aerospace — — 3,369 3,024 6,393 Military aerospace — — 1,362 923 2,285 Total segment $ 3,344 $ 5,035 $ 4,736 $ 3,962 17,077 Eliminations and other (372 ) Consolidated $ 16,705 Sales Type Product $ 1,525 $ 4,213 $ 2,775 $ 3,340 $ 11,853 Service 1,819 822 1,961 622 5,224 Total segment $ 3,344 $ 5,035 $ 4,736 $ 3,962 17,077 Eliminations and other (372 ) Consolidated $ 16,705 Segment sales disaggregated by product type and product versus service for the six months ended June 30, 2018 are as follows: (dollars in millions) Otis UTC Climate, Controls & Security Pratt & Whitney UTC Aerospace Systems Total Product Type Commercial and industrial, non aerospace $ 6,381 $ 9,411 $ 26 $ 30 $ 15,848 Commercial aerospace — — 6,568 5,935 12,503 Military aerospace — — 2,471 1,814 4,285 Total segment $ 6,381 $ 9,411 $ 9,065 $ 7,779 32,636 Eliminations and other (689 ) Consolidated $ 31,947 Sales Type Product $ 2,744 $ 7,811 $ 5,312 $ 6,528 $ 22,395 Service 3,637 1,600 3,753 1,251 10,241 Total segment $ 6,381 $ 9,411 $ 9,065 $ 7,779 32,636 Eliminations and other (689 ) Consolidated $ 31,947

Accounting Pronouncements

Accounting Pronouncements	6 Months Ended
	Jun. 30, 2018
New Accounting Pronouncements and Changes in Accounting Principles [Abstract]
New Accounting Pronouncements, Policy [Text Block]	Accounting Pronouncements In February 2016, the FASB issued ASU 2016-02, Leases (Topic 842) . The new standard establishes a right-of-use (ROU) model that requires a lessee to record a ROU asset and a lease liability on the balance sheet for all leases with terms longer than 12 months. Leases will be classified as either finance or operating, with classification affecting the pattern of expense recognition in the Condensed Consolidated Statement of Operations. In addition, this standard requires a lessor to classify leases as either sales-type, finance or operating. A lease will be treated as a sale if it transfers all of the risks and rewards, as well as control of the underlying asset, to the lessee. If risks and rewards are conveyed without the transfer of control, the lease is treated as financing. If the lessor doesn’t convey risks and rewards or control, the lease is treated as operating. ASU 2016-02 is effective for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years. A modified retrospective transition approach is required for lessees for capital and operating leases and lessors for sales-type, direct financing, and operating leases existing at, or entered into after, the beginning of the earliest comparative period presented in the financial statements, with certain practical expedients available. We expect that upon adoption we will recognize ROU assets and lease liabilities and that the amounts could be material. We do not expect the ASU to have a material impact on our cash flows or results of operations. In February 2018, the FASB issued ASU 2018-02, Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income (Topic 220) . The new standard allows companies to reclassify to retained earnings the stranded tax effects in accumulated other comprehensive income (AOCI) from the newly-enacted US Tax Cuts and Jobs Act. The new standard is effective for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years, with early adoption permitted. We are still evaluating the impact of our pending adoption of the new standard on our consolidated financial statements. However, we expect that upon adoption we will recognize a reclassification from AOCI to retained earnings that could be material. We do not expect this ASU to have a material impact on our cash flows and results of operations.

Acquisitions, Dispositions, G24

Acquisitions, Dispositions, Goodwill and Other Intangible Assets (Tables)	6 Months Ended
	Jun. 30, 2018
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net [Abstract]
Schedule of Goodwill [Table Text Block]	Changes in our goodwill balances for the six months ended June 30, 2018 were as follows: (dollars in millions) Balance as of Goodwill Resulting from Business Combinations Foreign Currency Translation and Other Balance as of Otis $ 1,737 $ 5 $ (34 ) $ 1,708 UTC Climate, Controls & Security 10,009 1 (211 ) 9,799 Pratt & Whitney 1,511 57 (3 ) 1,565 UTC Aerospace Systems 14,650 — (26 ) 14,624 Total Segments 27,907 63 (274 ) 27,696 Eliminations and other 3 — — 3 Total $ 27,910 $ 63 $ (274 ) $ 27,699
Intangible Assets Disclosure [Table Text Block]	Identifiable intangible assets are comprised of the following: June 30, 2018 December 31, 2017 (dollars in millions) Gross Amount Accumulated Amortization Gross Amount Accumulated Amortization Amortized: Service portfolios $ 2,187 $ (1,588 ) $ 2,178 $ (1,534 ) Patents and trademarks 364 (226 ) 399 (233 ) Collaboration intangible assets 4,294 (510 ) 4,109 (384 ) Customer relationships and other 13,425 (4,281 ) 13,352 (4,100 ) 20,270 (6,605 ) 20,038 (6,251 ) Unamortized: Trademarks and other 2,074 — 2,096 — Total $ 22,344 $ (6,605 ) $ 22,134 $ (6,251 )
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block]	The following is the expected amortization of intangible assets for the years 2018 through 2023 , which reflects the pattern of expected economic benefit on certain aerospace intangible assets. (dollars in millions) Remaining 2018 2019 2020 2021 2022 2023 Amortization expense $ 457 $ 873 $ 874 $ 899 $ 896 $ 918

Revenue Recognition Contract As

Revenue Recognition Contract Asset & Liability (Tables)	6 Months Ended
	Jun. 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 June 30, 2018 are as follows: (dollars in millions) June 30, 2018 Contract assets, current $ 3,273 Contract assets, noncurrent (included within Other assets) 1,015 Total contract assets 4,288 Contract liabilities, current (5,652 ) Contract liabilities, noncurrent (included within Other long-term liabilities) (4,838 ) Total contract liabilities (10,490 ) Net contract liabilities $ (6,202 ) Under the New Revenue Standard, during the six months ended June 30, 2018 , net contract liabilities increased to $6,202 million . This reflects the establishment of $6,365 million of net contract liabilities upon the adoption, and $14,401 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 $1,728 million as a result of revenue recognition, and by $12,701 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.

Revenue Recognition Remaining P

Revenue Recognition Remaining Performance Obligations (Tables)	6 Months Ended
	Jun. 30, 2018
Remaining Performance Obligations [Abstract]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table Text Block]	Remaining performance obligations ("RPO") are the aggregate amount of total contract transaction price that is unsatisfied or partially unsatisfied. As of June 30, 2018 , our total RPO is $103.4 billion . Of this total, we expect approximately 45% will be recognized as sales over the following 24 months.

Revenue Recognition Financial S

Revenue Recognition Financial Statement Supplementals - Rev Rec (Tables)	6 Months Ended
	Jun. 30, 2018
Financial Statement Supplementals - Rev Rec [Abstract]
Revenue Recognition, Policy [Policy Text Block]	Note 2: Revenue Recognition ASU 2014-09 and its related amendments (collectively, the New Revenue Standard) are effective for reporting periods beginning after December 15, 2017, and interim periods therein. We adopted the New Revenue Standard effective January 1, 2018 and elected the modified retrospective approach. The results for periods before 2018 were not adjusted for the new standard and the cumulative effect of the change in accounting was recognized through retained earnings at the date of adoption. Revenue Recognition Accounting Policy Summary. We account for revenue in accordance with Accounting Standards Codification (ASC) Topic 606: Revenue from Contracts with Customers . Under Topic 606, a performance obligation is a promise in a contract with a customer to transfer a distinct good or service to the customer. Some of our contracts with customers contain a single performance obligation, while others contain multiple performance obligations most commonly when a contract spans multiple phases of the product life-cycle such as development, production, maintenance and support. A contract's transaction price is allocated to each distinct performance obligation and recognized as revenue when, or as, the performance obligation is satisfied. When there are multiple performance obligations within a contract, we allocate the transaction price to each performance obligation based on its standalone selling price. We consider the contractual consideration payable by the customer and assess variable consideration that may affect the total transaction price, including contractual discounts, contract incentive payments, estimates of award fees, and other sources of variable consideration, when determining the transaction price of each contract. We include variable consideration in the estimated transaction price when there is a basis to reasonably estimate the amount. These estimates are based on historical experience, anticipated performance and our best judgment at the time. We also consider whether our contracts provide customers with significant financing. Generally, our contracts do not contain significant financing. Point in time revenue recognition. Timing of the satisfaction of performance obligations varies across our businesses due to our diverse product and service mix, customer base, and contractual terms. Performance obligations are satisfied as of a point in time for heating, ventilating, air-conditioning and refrigeration systems, certain alarm and fire detection and suppression systems, and certain aerospace components, engines, and spare parts. Revenue is recognized when control of the product transfers to the customer, generally upon product shipment. Over-time revenue recognition. Performance obligations are satisfied over-time if the customer receives the benefits as we perform work, if the customer controls the asset as it is being produced, or if the product being produced for the customer has no alternative use and we have a contractual right to payment. Revenue is recognized for our construction-type and certain production-type contracts on an over-time basis. We recognize revenue on an over-time basis on certain long-term aerospace aftermarket contracts and aftermarket service work; development, fixed price, and other cost reimbursement contracts in our aerospace businesses; and elevator and escalator sales, installation, service, modernization and other construction contracts in our commercial businesses. For construction and installation contracts within our commercial businesses and aerospace performance obligations satisfied over time, revenue is recognized using costs incurred to date relative to total estimated costs at completion to measure progress. Incurred costs represent work performed, which correspond with and best depict transfer of control to the customer. Contract costs include labor, materials, and subcontractors' costs, or other direct costs, and where applicable on government and commercial contracts, indirect costs. For certain of our long-term aftermarket contracts, revenue is recognized over the contract period. In the commercial businesses, revenue is primarily recognized on a straight-line basis over the contract period. In the aerospace businesses, we generally account for such contracts as a series of daily obligations to stand ready to provide product maintenance and aftermarket services. Revenue is primarily recognized in proportion to cost as sufficient historical evidence indicates that the cost of performing services under the contract is incurred on an other than straight-line basis. Aerospace contract modifications are routine and contracts are often modified to account for changes in contract specifications or requirements. Contract modifications that are for goods or services that are not distinct are accounted for as part of the existing contract. We incur costs for engineering and development of aerospace products directly related to existing or anticipated contracts with customers. Such costs generate or enhance our ability to satisfy our performance obligations under these contracts. We capitalize these costs as contract fulfillment costs to the extent the costs are recoverable from the associated contract margin and subsequently amortize the costs as the original equipment (OEM) products are delivered to the customer. In instances where intellectual property does not transfer to the customer, we defer the customer funding of OEM product engineering and development and recognize revenue when the OEM products are delivered to the customer. Costs to obtain contracts are not material. Loss provisions on OEM contracts are recognized to the extent that estimated contract costs exceed the estimated consideration from the products contemplated under the contractual arrangement. For new commitments, we generally record loss provisions at the earlier of contract announcement or contract signing except for certain contracts under which losses are recorded upon receipt of the purchase order that obligates us to perform. For existing commitments, anticipated losses on contractual arrangements are recognized in the period in which losses become evident. Products contemplated under contractual arrangements include firm quantities of product sold under contract and, in the large commercial engine and wheels and brakes businesses, future highly probable sales of replacement parts required by regulation that are expected to be sold subsequently for incorporation into the original equipment. In the large commercial engine and wheels and brakes businesses, when the combined original equipment and aftermarket arrangement for each individual sales campaign are profitable, we record original equipment product losses, as applicable, at the time of delivery. We review our cost estimates on significant contracts on a quarterly basis and for others, no less frequently than annually or when circumstances change and warrant a modification to a previous estimate. We record changes in contract estimates using the cumulative catch-up method.
Additional Financial Information Disclosure [Text Block]	The following schedules quantify the impact of the New Revenue Standard on the statement of operations for the quarter and six months ended June 30, 2018 . The effect of the new standard represents the increase (decrease) in the line item based on the adoption of the New Revenue Standard. (dollars in millions) Quarter Ended June 30, 2018, under previous standard Effect of the New Revenue Standard Quarter Ended June 30, 2018 as reported Net Sales: Product sales $ 11,406 $ 114 $ 11,520 Service sales 5,115 70 5,185 16,521 184 16,705 Costs and Expenses: Cost of products sold 8,975 179 9,154 Cost of services sold 3,228 40 3,268 Research and development 607 (18 ) 589 Selling, general and administrative 1,759 — 1,759 14,569 201 14,770 Other income, net 943 (2 ) 941 Operating profit 2,895 (19 ) 2,876 Non-service pension (benefit) (192 ) — (192 ) Interest expense, net 234 — 234 Income from operations before income taxes 2,853 (19 ) 2,834 Income tax expense 700 (5 ) 695 Net income from operations 2,153 (14 ) 2,139 Less: Noncontrolling interest in subsidiaries' earnings from operations 87 4 91 Net income attributable to common shareowners $ 2,066 $ (18 ) $ 2,048 (dollars in millions) Six Months Ended June 30, 2018, under previous standard Effect of the New Revenue Standard Six Months Ended June 30, 2018 as reported Net Sales: Product sales $ 21,573 $ 205 $ 21,778 Service sales 9,968 201 10,169 31,541 406 31,947 Costs and Expenses: Cost of products sold 16,861 309 17,170 Cost of services sold 6,396 136 6,532 Research and development 1,180 (37 ) 1,143 Selling, general and administrative 3,470 — 3,470 27,907 408 28,315 Other income, net 1,175 (3 ) 1,172 Operating profit 4,809 (5 ) 4,804 Non-service pension (benefit) (383 ) — (383 ) Interest expense, net 463 — 463 Income from operations before income taxes 4,729 (5 ) 4,724 Income tax expense 1,218 (1 ) 1,217 Net income from operations 3,511 (4 ) 3,507 Less: Noncontrolling interest in subsidiaries' earnings from operations 156 6 162 Net income attributable to common shareowners $ 3,355 $ (10 ) $ 3,345 The New Revenue Standard resulted in an increase to Product and Service sales and Cost of products and services sold primarily due to the change to a percentage-of-completion revenue model for certain U.S Government and commercial aerospace equipment contracts, and aerospace aftermarket service work at Pratt & Whitney and UTC Aerospace Systems. The New Revenue Standard also resulted in an increase in Cost of products sold related to the timing of manufacturing cost recognition on early-contract OEM units sold, with costs in excess of the contract average unit costs recorded through Cost of products sold. The lower amounts of research and development expense recognized under the New Revenue Standard reflect the capitalization of costs of engineering and development of aerospace products as contract fulfillment costs under contracts with customers. The following schedule quantifies the impact of the New Revenue Standard on our balance sheet as of June 30, 2018 . (dollars in millions) June 30, 2018 under previous standard Effect of the New Revenue Standard June 30, 2018 as reported Assets Accounts receivable, net $ 13,432 $ (1,459 ) $ 11,973 Inventories 11,093 (2,114 ) 8,979 Contract assets, current — 3,273 3,273 Other assets, current 1,276 (13 ) 1,263 Future income tax benefits 1,600 26 1,626 Intangible assets, net 15,807 (68 ) 15,739 Other assets 6,098 973 7,071 Liabilities and Equity Accrued liabilities $ 14,287 $ (5,557 ) $ 8,730 Contract liabilities, current — 5,652 5,652 Other long term liabilities 12,180 1,010 13,190 Noncontrolling interest 1,977 5 1,982 Retained earnings 57,517 (490 ) 57,027 The decrease in Retained earnings of $490 million in the table above reflects $480 million of adjustments to the balance sheet as of January 1, 2018, resulting from the adoption of the New Revenue Standard and $10 million lower reported net income under the New Revenue Standard during 2018. The declines in Accounts receivable, net, Inventories, Other assets, current, and Intangible assets, net, reflect reclassifications to contract assets, and specifically for Inventories, earlier recognition of costs of products sold for contracts requiring an over-time method of revenue recognition. The increase in Other assets reflects the establishment of non-current contract assets and contract fulfillment cost assets. The decline in accrued liabilities is primarily due to the reclassification of payments from customers in advance of work performed as contract liabilities. The Other long term liabilities increase primarily reflects the establishment of non-current contract liabilities for certain customer funding of OEM product engineering and development, which will be recognized as revenue when the OEM products are delivered to the customer.

Earnings Per Share (Tables)

Earnings Per Share (Tables)	6 Months Ended
	Jun. 30, 2018
Earnings Per Share [Abstract]
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]	Quarter Ended June 30, Six Months Ended June 30, (dollars in millions, except per share amounts; shares in millions) 2018 2017 2018 2017 Net income attributable to common shareowners $ 2,048 $ 1,439 $ 3,345 $ 2,825 Basic weighted average number of shares outstanding 790.5 788.7 790.2 791.1 Stock awards and equity units 9.1 9.5 9.8 9.3 Diluted weighted average number of shares outstanding 799.6 798.2 800.0 800.4 Earnings Per Share of Common Stock: Basic $ 2.59 $ 1.83 $ 4.23 $ 3.57 Diluted $ 2.56 $ 1.80 $ 4.18 $ 3.53

Inventories and Contracts in 29

Inventories and Contracts in Progress (Tables)	6 Months Ended
	Jun. 30, 2018
Inventory Disclosure [Abstract]
Schedule of Inventory, Current [Table Text Block]	(dollars in millions) June 30, 2018 December 31, 2017 Raw materials $ 2,298 $ 2,038 Work-in-process 2,306 3,366 Finished goods 4,375 3,845 Contracts in progress — 10,205 8,979 19,454 Less: Progress payments, secured by lien, on U.S. Government contracts — (236 ) Billings on contracts in progress — (9,337 ) $ 8,979 $ 9,881

Borrowings and Lines of Credit

Borrowings and Lines of Credit (Tables)	6 Months Ended
	Jun. 30, 2018
Debt Disclosure [Abstract]
Schedule of Short-Term Debt [Table Text Block]	(dollars in millions) June 30, 2018 December 31, 2017 Commercial paper $ 876 $ 300 Other borrowings 109 92 Total short-term borrowings $ 985 $ 392
Schedule of Long-term Debt [Table Text Block]	Long-term debt consisted of the following: (dollars in millions) June 30, 2018 December 31, 2017 6.800% notes due 2018 $ — $ 99 EURIBOR plus 0.800% floating rate notes due 2018 (€750 million principal value) 2 — 890 1.778% junior subordinated notes due 2018 — 1,100 LIBOR plus 0.350% floating rate notes due 2019 3 350 350 1.500% notes due 2019 1 650 650 EURIBOR plus 0.15% floating rate notes due 2019 (€750 million principal value) 2 876 890 8.875% notes due 2019 271 271 4.875% notes due 2020 1 171 171 4.500% notes due 2020 1 1,250 1,250 1.900% notes due 2020 1 1,000 1,000 EURIBOR plus 0.20% floating rate notes due 2020 (€750 million principal value) 2 876 — 8.750% notes due 2021 250 250 1.950% notes due 2021 1 750 750 1.125% notes due 2021 (€950 million principal value) 1 1,110 1,127 2.300% notes due 2022 1 500 500 3.100% notes due 2022 1 2,300 2,300 1.250% notes due 2023 (€750 million principal value) 1 876 890 2.800% notes due 2024 1 800 800 1.150% notes due 2024 (€750 million principal value) 1 876 — 1.875% notes due 2026 (€500 million principal value) 1 584 593 2.650% notes due 2026 1 1,150 1,150 3.125% notes due 2027 1 1,100 1,100 7.100% notes due 2027 141 141 6.700% notes due 2028 400 400 7.500% notes due 2029 1 550 550 2.150% notes due 2030 (€500 million principal value) 1 584 — 5.400% notes due 2035 1 600 600 6.050% notes due 2036 1 600 600 6.800% notes due 2036 1 134 134 7.000% notes due 2038 159 159 6.125% notes due 2038 1 1,000 1,000 5.700% notes due 2040 1 1,000 1,000 4.500% notes due 2042 1 3,500 3,500 4.150% notes due 2045 1 850 850 3.750% notes due 2046 1 1,100 1,100 4.050% notes due 2047 1 600 600 Project financing obligations 206 158 Other (including capitalized leases) 197 195 Total principal long-term debt 27,361 27,118 Other (fair market value adjustments and discounts) (37 ) (25 ) Total long-term debt 27,324 27,093 Less: current portion 78 2,104 Long-term debt, net of current portion $ 27,246 $ 24,989 1 We may redeem these notes at our option pursuant to their terms. 2 The three-month EURIBOR rate as of June 30, 2018 was approximately -0.321%. The notes may be redeemed at our option in whole, but not in part, at any time in the event of certain developments affecting U.S. taxation. 3 The three-month LIBOR rate as of June 30, 2018 was approximately 2.336%.
Schedule of Weighted average interest rates [Table Text Block]	The average interest expense rate on our total borrowings for the quarter and six months ended June 30, 2018 and 2017 were as follows: Quarter Ended June 30, Six Months Ended June 30, 2018 2017 2018 2017 Average interest expense rate 3.5 % 3.6 % 3.5 % 3.6 %

Employee Benefit Plans (Tables)

Employee Benefit Plans (Tables)	6 Months Ended
	Jun. 30, 2018
Retirement Benefits [Abstract]
Schedule of Defined Benefit Plans Disclosures [Table Text Block]	Quarter Ended June 30, 2017 (dollars in millions) Previously Reported Effect of Change Higher/(Lower) As Revised Cost of product sold $ 7,907 $ 50 $ 7,957 Cost of services sold 3,193 14 3,207 Research and development 609 10 619 Selling, general and administrative 1,538 52 1,590 Non-service pension (benefit) — (126 ) (126 ) Six Months Ended June 30, 2017 (dollars in millions) Previously Reported Effect of Change Higher/(Lower) As Revised Cost of product sold 15,170 98 15,268 Cost of services sold 6,007 25 6,032 Research and development 1,186 19 1,205 Selling, general and administrative 3,020 107 3,127 Non-service pension (benefit) — (249 ) (249 ) Contributions to our plans were as follows: Quarter Ended June 30, Six Months Ended June 30, (dollars in millions) 2018 2017 2018 2017 Defined benefit plans $ 22 $ 33 $ 59 $ 79 Defined contribution plans 105 86 199 176 There were no contributions to our domestic defined benefit pension plans in the quarter and six months ended June 30, 2018 and 2017 . The following table illustrates the components of net periodic benefit cost for our defined pension and other postretirement benefit plans: Pension Benefits Other Postretirement Benefits (dollars in millions) 2018 2017 2018 2017 Service cost $ 93 $ 93 $ — $ 1 Interest cost 278 279 6 6 Expected return on plan assets (562 ) (541 ) — — Amortization of prior service credit (10 ) (9 ) (1 ) — Recognized actuarial net loss (gain) 101 143 (2 ) (2 ) Net settlement and curtailment gain (2 ) (2 ) — — Total net periodic benefit (income) cost $ (102 ) $ (37 ) $ 3 $ 5 Pension Benefits Six Months Ended June 30, Other Postretirement Benefits Six Months Ended June 30, (dollars in millions) 2018 2017 2018 2017 Service cost $ 186 $ 186 $ 1 $ 2 Interest cost 557 557 12 13 Expected return on plan assets (1,125 ) (1,081 ) — — Amortization of prior service credit (20 ) (18 ) (2 ) — Recognized actuarial net loss (gain) 202 286 (4 ) (5 ) Net settlement and curtailment gain (3 ) (1 ) — — Total net periodic benefit (income) cost $ (203 ) $ (71 ) $ 7 $ 10

Restructuring and Other Costs (

Restructuring and Other Costs (Tables)	6 Months Ended
	Jun. 30, 2018
Restructuring Cost and Reserve [Line Items]
Schedule of Restructuring and Related Costs [Table Text Block]	We recorded charges in the segments as follows: (dollars in millions) Otis $ 47 UTC Climate, Controls & Security 35 Pratt & Whitney 3 UTC Aerospace Systems 60 Eliminations and other 4 Total $ 149 Restructuring charges incurred during the six months ended June 30, 2018 primarily relate to actions initiated during 2018 and 2017 , and were recorded as follows: (dollars in millions) Cost of sales $ 86 Selling, general and administrative 65 Non-service pension (benefit) (2 ) Total $ 149
Current Year Actions [Member]
Restructuring Cost and Reserve [Line Items]
Schedule of Restructuring and Related Costs [Table Text Block]	The following table summarizes expected, incurred and remaining costs for the 2018 restructuring actions by segment: (dollars in millions) Expected Costs Costs Incurred Quarter Ended March 31, 2018 Costs Incurred Quarter Ended June 30, 2018 Remaining Costs at June 30, 2018 Otis $ 31 $ (9 ) $ (18 ) $ 4 UTC Climate, Controls & Security 77 (1 ) (23 ) 53 Pratt & Whitney 3 — (3 ) — UTC Aerospace Systems 20 — (15 ) 5 Eliminations and other 4 (2 ) (2 ) — Total $ 135 $ (12 ) $ (61 ) $ 62
Schedule of Restructuring Reserve by Type of Cost [Table Text Block]	The following table summarizes the accrual balance and utilization for the 2018 restructuring actions for the quarter and six months ended June 30, 2018 : (dollars in millions) Severance Facility Exit, Lease Termination and Other Costs Total Quarter Ended June 30, 2018 Restructuring accruals at March 31, 2018 $ 8 $ — $ 8 Net pre-tax restructuring costs 60 1 61 Utilization and foreign exchange (20 ) (1 ) (21 ) Balance at June 30, 2018 $ 48 $ — $ 48 Six Months Ended June 30, 2018 Net pre-tax restructuring costs $ 71 $ 2 $ 73 Utilization and foreign exchange (23 ) (2 ) (25 ) Balance at June 30, 2018 $ 48 $ — $ 48
Prior Year Actions [Member]
Restructuring Cost and Reserve [Line Items]
Schedule of Restructuring and Related Costs [Table Text Block]	The following table summarizes expected, incurred and remaining costs for the 2017 restructuring actions by segment: (dollars in millions) Expected Costs Costs Incurred in 2017 Costs Incurred Quarter Ended March 31, 2018 Costs Incurred Quarter Ended June 30, 2018 Remaining Costs at June 30, 2018 Otis $ 73 $ (43 ) $ (15 ) $ (4 ) $ 11 UTC Climate, Controls & Security 81 (76 ) (7 ) 5 3 Pratt & Whitney 7 (7 ) — — — UTC Aerospace Systems 157 (43 ) (29 ) (17 ) 68 Eliminations and other 7 (7 ) — — — Total $ 325 $ (176 ) $ (51 ) $ (16 ) $ 82
Schedule of Restructuring Reserve by Type of Cost [Table Text Block]	he following table summarizes the accrual balances and utilization for the 2017 restructuring actions for the quarter and six months ended June 30, 2018 : (dollars in millions) Severance Facility Exit, Lease Termination and Other Costs Total Quarter Ended June 30, 2018 Restructuring accruals at March 31, 2018 $ 88 $ (2 ) $ 86 Net pre-tax restructuring costs 8 8 16 Utilization and foreign exchange (23 ) (9 ) (32 ) Balance at June 30, 2018 $ 73 $ (3 ) $ 70 Six Months Ended June 30, 2018 Restructuring accruals at December 31, 2017 $ 84 $ 1 $ 85 Net pre-tax restructuring costs 47 20 67 Utilization and foreign exchange (58 ) (24 ) (82 ) Balance at June 30, 2018 $ 73 $ (3 ) $ 70

Financial Instruments (Tables)

Financial Instruments (Tables)	6 Months Ended
	Jun. 30, 2018
Derivative Instruments, Gain (Loss) [Line Items]
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block]	The following table summarizes the fair value and presentation in the Condensed Consolidated Balance Sheets for derivative instruments as of June 30, 2018 and December 31, 2017 : (dollars in millions) Balance Sheet Location June 30, 2018 December 31, 2017 Derivatives designated as hedging instruments: Foreign exchange contracts Asset Derivatives: Other assets, current $ 23 $ 77 Other assets 27 101 Total asset derivatives $ 50 $ 178 Liability Derivatives: Accrued liabilities (43 ) (10 ) Other long-term liabilities (75 ) (8 ) Total liability derivatives $ (118 ) $ (18 ) Derivatives not designated as hedging instruments: Foreign exchange contracts Asset Derivatives: Other assets, current 39 70 Other assets 22 5 Total asset derivatives $ 61 $ 75 Liability Derivatives: Accrued liabilities (93 ) (57 ) Other long-term liabilities (3 ) (3 ) Total liability derivatives $ (96 ) $ (60 )
Reclassification out of Accumulated Other Comprehensive Income [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments, Gain (Loss) [Table Text Block]	The effect of cash flow hedging relationships on accumulated other comprehensive income for the quarter and six months ended June 30, 2018 and 2017 are presented in the table below. The amounts of gain or (loss) are attributable to foreign exchange contract activity and are recorded as a component of Product sales when reclassified from accumulated other comprehensive income. Quarter Ended June 30, Six Months Ended June 30, (dollars in millions) 2018 2017 2018 2017 Gain (loss) recorded in Accumulated other comprehensive loss $ (245 ) $ 66 $ (200 ) $ 130 (Gain) loss reclassified from Accumulated other comprehensive loss into Product sales (1 ) 5 (28 ) 10
Other Income [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments, Gain (Loss) [Table Text Block]	The effect of derivatives not designated as hedging instruments that is included below within Other income, net, on the Condensed Consolidated Statement of Operations was as follows: Quarter Ended June 30, Six Months Ended June 30, (dollars in millions) 2018 2017 2018 2017 Foreign exchange contracts $ 19 $ 28 $ 70 $ 40

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	6 Months Ended
	Jun. 30, 2018
Fair Value Disclosures [Abstract]
Fair Value Measurements, Recurring and Nonrecurring [Table Text Block]	In accordance with the provisions of ASC 820, the following tables provide the valuation hierarchy classification of assets and liabilities that are carried at fair value and measured on a recurring and nonrecurring basis in our Condensed Consolidated Balance Sheet as of June 30, 2018 and December 31, 2017 : June 30, 2018 (dollars in millions) Total Level 1 Level 2 Level 3 Recurring fair value measurements: Available-for-sale securities $ 42 $ 42 $ — $ — Derivative assets 111 — 111 — Derivative liabilities (214 ) — (214 ) — December 31, 2017 (dollars in millions) Total Level 1 Level 2 Level 3 Recurring fair value measurements: Available-for-sale securities $ 64 $ 64 $ — $ — Derivative assets 253 — 253 — Derivative liabilities (78 ) — (78 ) —
Fair Value, by Balance Sheet Grouping [Table Text Block]	The following table provides carrying amounts and fair values of financial instruments that are not carried at fair value in our Condensed Consolidated Balance Sheet at June 30, 2018 and December 31, 2017 : June 30, 2018 December 31, 2017 (dollars in millions) Carrying Amount Fair Value Carrying Amount Fair Value Long-term receivables $ 132 $ 122 $ 127 $ 121 Customer financing notes receivable 577 554 609 596 Short-term borrowings (985 ) (985 ) (392 ) (392 ) Long-term debt (excluding capitalized leases) (27,301 ) (27,755 ) (27,067 ) (29,180 ) Long-term liabilities (307 ) (271 ) (362 ) (330 ) The following table provides the valuation hierarchy classification of assets and liabilities that are not carried at fair value in our Condensed Consolidated Balance Sheet at June 30, 2018 and December 31, 2017 : June 30, 2018 (dollars in millions) Total Level 1 Level 2 Level 3 Long-term receivables $ 122 $ — $ 122 $ — Customer financing notes receivable 554 — 554 — Short-term borrowings (985 ) — (876 ) (109 ) Long-term debt (excluding capitalized leases) (27,755 ) — (27,496 ) (259 ) Long-term liabilities (271 ) — (271 ) — December 31, 2017 (dollars in millions) Total Level 1 Level 2 Level 3 Long-term receivables $ 121 $ — $ 121 $ — Customer financing notes receivable 596 — 596 — Short-term borrowings (392 ) — (300 ) (92 ) Long-term debt (excluding capitalized leases) (29,180 ) — (28,970 ) (210 ) Long-term liabilities (330 ) — (330 ) —

Long-Term Financing Receivabl35

Long-Term Financing Receivables (Tables)	6 Months Ended
	Jun. 30, 2018
Receivables [Abstract]
Financing Receivable Credit Quality Indicators [Table Text Block]	The following table summarizes the balance by class of aerospace business related long-term receivables as of June 30, 2018 and December 31, 2017 . (dollars in millions) June 30, 2018 December 31, 2017 Long-term trade accounts receivable $ 71 $ 973 Notes and leases receivable 435 424 Total long-term receivables $ 506 $ 1,397

Shareowners' Equity and Nonco36

Shareowners' Equity and Noncontrolling Interest (Tables)	6 Months Ended
	Jun. 30, 2018
Stockholders' Equity Note [Abstract]
Schedule of Stockholders Equity [Table Text Block]	A summary of the changes in shareowners' equity and noncontrolling interest comprising total equity for the quarter and six months ended June 30, 2018 and 2017 is provided below: Quarter Ended June 30, 2018 2017 (dollars in millions) Share-owners' Equity Non-controlling Interest Total Equity Share-owners' Non-controlling Interest Total Equity Equity, beginning of period $ 30,534 $ 1,958 $ 32,492 $ 27,594 $ 1,678 $ 29,272 Comprehensive (loss) income for the period: Net income 2,048 91 2,139 1,439 93 1,532 Total other comprehensive (loss) income (747 ) (38 ) (785 ) 369 18 387 Total comprehensive income for the period 1,301 53 1,354 1,808 111 1,919 Common Stock issued under employee plans 110 — 110 91 — 91 Common Stock repurchased (27 ) — (27 ) (437 ) — (437 ) Dividends on Common Stock (535 ) — (535 ) (503 ) — (503 ) Dividends on ESOP Common Stock (17 ) — (17 ) (17 ) — (17 ) Dividends attributable to noncontrolling interest — (73 ) (73 ) — (64 ) (64 ) Capital contributions — 42 42 — — — Purchase of subsidiary shares from noncontrolling interest, net — — — (1 ) (4 ) (5 ) Redeemable noncontrolling interest fair value adjustment — — — (94 ) — (94 ) Other (2 ) 2 — 1 (8 ) (7 ) Equity, end of period $ 31,364 $ 1,982 $ 33,346 $ 28,442 $ 1,713 $ 30,155 Six Months Ended June 30, 2018 2017 (Dollars in millions) Share-owners' Non-controlling Interest Total Equity Share-owners' Non-controlling Interest Total Equity Equity, beginning of period $ 29,610 $ 1,811 $ 31,421 $ 27,579 $ 1,590 $ 29,169 Comprehensive (loss) income for the period: Net income 3,345 162 3,507 2,825 175 3,000 Total other comprehensive (loss) income (159 ) (5 ) (164 ) 370 43 413 Total comprehensive income for the period 3,186 157 3,343 3,195 218 3,413 Common Stock issued under employee plans 181 — 181 170 — 170 Common Stock repurchased (52 ) — (52 ) (1,370 ) — (1,370 ) Dividends on Common Stock (1,070 ) — (1,070 ) (1,008 ) — (1,008 ) Dividends on ESOP Common Stock (35 ) — (35 ) (35 ) — (35 ) Dividends attributable to noncontrolling interest — (139 ) (139 ) — (112 ) (112 ) Capital contributions — 162 162 — 43 43 Purchase of subsidiary shares from noncontrolling interest, net (1 ) (1 ) (2 ) (1 ) (5 ) (6 ) Disposition of noncontrolling interest — (8 ) (8 ) — — — Redeemable noncontrolling interest fair value adjustment (2 ) — (2 ) (95 ) — (95 ) New Revenue Standard adoption impact (480 ) — (480 ) — — — Other 27 — 27 7 (21 ) (14 ) Equity, end of period $ 31,364 $ 1,982 $ 33,346 $ 28,442 $ 1,713 $ 30,155
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]	A summary of the changes in each component of Accumulated other comprehensive (loss) income, net of tax for the quarter and six months ended June 30, 2018 and 2017 is provided below: (dollars in millions) Foreign Currency Translation Defined Benefit Pension and Post- retirement Plans Unrealized Gains (Losses) on Available-for-Sale Securities Unrealized Hedging (Losses) Gains Accumulated Other Comprehensive (Loss) Income Quarter Ended June 30, 2018 Balance at March 31, 2018 $ (2,444 ) $ (4,579 ) $ — $ 86 $ (6,937 ) Other comprehensive income (loss) before (564 ) 18 — (245 ) (791 ) Amounts reclassified, pre-tax (3 ) 88 — (1 ) 84 Tax (benefit) expense reclassified (74 ) (26 ) — 60 (40 ) Balance at June 30, 2018 $ (3,085 ) $ (4,499 ) $ — $ (100 ) $ (7,684 ) Six Months Ended June 30, 2018 Balance at December 31, 2017 $ (2,950 ) $ (4,652 ) $ 5 $ 72 $ (7,525 ) Other comprehensive income (loss) before (188 ) 26 — (200 ) (362 ) Amounts reclassified, pre-tax (3 ) 176 — (28 ) 145 Tax (benefit) expense reclassified 56 (49 ) — 56 63 ASU 2016-01 adoption impact — — (5 ) — (5 ) Balance at June 30, 2018 $ (3,085 ) $ (4,499 ) $ — $ (100 ) $ (7,684 ) (dollars in millions) Foreign Currency Translation Defined Benefit Pension and Post- retirement Plans Unrealized Gains (Losses) on Available-for-Sale Securities Unrealized Hedging (Losses) Gains Accumulated Other Comprehensive (Loss) Income Quarter Ended June 30, 2017 Balance at March 31, 2017 $ (3,359 ) $ (4,962 ) $ 96 $ (108 ) $ (8,333 ) Other comprehensive income (loss) before 231 (2 ) 20 50 299 Amounts reclassified, pre-tax — 132 (24 ) 5 113 Tax (benefit) expense reclassified — (50 ) 8 (1 ) (43 ) Balance at June 30, 2017 $ (3,128 ) $ (4,882 ) $ 100 $ (54 ) $ (7,964 ) Six Months Ended June 30, 2017 Balance at December 31, 2016 $ (3,480 ) $ (5,045 ) $ 353 $ (162 ) $ (8,334 ) Other comprehensive income (loss) before 352 (2 ) (1 ) 100 449 Amounts reclassified, pre-tax — 263 (407 ) 10 (134 ) Tax (benefit) expense reclassified — (98 ) 155 (2 ) 55 Balance at June 30, 2017 $ (3,128 ) $ (4,882 ) $ 100 $ (54 ) $ (7,964 )

Variable Interest Entities (Tab

Variable Interest Entities (Tables)	6 Months Ended
	Jun. 30, 2018
Variable Interest Entity, Primary Beneficiary
Variable Interest Entity [Line Items]
Schedule of Variable Interest Entities [Table Text Block]	The carrying amounts and classification of assets and liabilities for variable interest entities in our Condensed Consolidated Balance Sheet are as follows: (dollars in millions) June 30, 2018 December 31, 2017 Current assets $ 4,127 $ 3,976 Noncurrent assets 1,360 1,534 Total assets $ 5,487 $ 5,510 Current liabilities $ 4,739 $ 3,601 Noncurrent liabilities 1,813 2,086 Total liabilities $ 6,552 $ 5,687

Guarantees (Tables)

Guarantees (Tables)	6 Months Ended
	Jun. 30, 2018
Service and Product Warranties and Product Performance Guarantees [Abstract]
Product Warranty Disclosure [Table Text Block]	The changes in the carrying amount of service and product warranties and product performance guarantees for the six months ended June 30, 2018 and 2017 are as follows: (dollars in millions) 2018 2017 Balance as of January 1 $ 1,146 $ 1,199 Warranties and performance guarantees issued 233 142 Settlements made (200 ) (120 ) Other (7 ) 13 Balance as of June 30 $ 1,172 $ 1,234

Segment Financial Data (Tables)

Segment Financial Data (Tables)	3 Months Ended	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2018
Segment Reporting [Abstract]
Schedule of Segment Reporting Information, by Segment [Table Text Block]	Results for the quarters ended June 30, 2018 and 2017 are as follows: Net Sales Operating Profits Operating Profit Margins (dollars in millions) 2018 2017 2018 2017 2018 2017 Otis $ 3,344 $ 3,131 $ 488 $ 539 14.6 % 17.2 % UTC Climate, Controls & Security 5,035 4,712 1,645 837 32.7 % 17.8 % Pratt & Whitney 4,736 4,070 397 364 8.4 % 8.9 % UTC Aerospace Systems 3,962 3,640 569 534 14.4 % 14.7 % Total segments 17,077 15,553 3,099 2,274 18.1 % 14.6 % Eliminations and other (372 ) (273 ) (97 ) (5 ) General corporate expenses — — (126 ) (105 ) Consolidated $ 16,705 $ 15,280 $ 2,876 $ 2,164 17.2 % 14.2 %	Results for the six months ended June 30, 2018 and 2017 are as follows: Net Sales Operating Profits Operating Profit Margins (dollars in millions) 2018 2017 2018 2017 2018 2017 Otis $ 6,381 $ 5,935 $ 938 $ 986 14.7 % 16.6 % UTC Climate, Controls & Security 9,411 8,604 2,237 1,768 23.8 % 20.5 % Pratt & Whitney 9,065 7,828 810 720 8.9 % 9.2 % UTC Aerospace Systems 7,779 7,251 1,157 1,065 14.9 % 14.7 % Total segments 32,636 29,618 5,142 4,539 15.8 % 15.3 % Eliminations and other (689 ) (523 ) (108 ) (23 ) General corporate expenses — — (230 ) (208 ) Consolidated $ 31,947 $ 29,095 $ 4,804 $ 4,308 15.0 % 14.8 %
Schedule of Segment Reporting Information, by Geographic Markets [Table Text Block]	quarter ended June 30, 2018 is as follows: (dollars in millions) Otis UTC Climate, Controls & Security Pratt & Whitney UTC Aerospace Systems Total Primary Geographical Markets United States $ 859 $ 2,618 $ 3,652 $ 2,776 $ 9,905 Europe 1,054 1,455 126 585 3,220 Asia Pacific 1,169 720 312 85 2,286 Other 262 242 646 516 1,666 Total segment $ 3,344 $ 5,035 $ 4,736 $ 3,962 17,077 Eliminations and other (372 ) Consolidated $ 16,705	six months ended June 30, 2018 is as follows: (dollars in millions) Otis UTC Climate, Controls & Security Pratt & Whitney UTC Aerospace Systems Total Primary Geographical Markets United States $ 1,704 $ 4,713 $ 6,773 $ 5,430 $ 18,620 Europe 2,059 2,839 299 1,192 6,389 Asia Pacific 2,091 1,405 680 169 4,345 Other 527 454 1,313 988 3,282 Total segment $ 6,381 $ 9,411 $ 9,065 $ 7,779 32,636 Eliminations and other (689 ) Consolidated $ 31,947
Segment Reporting Disclosure, Product & Sales Type [Text Block]	quarter ended June 30, 2018 are as follows: (dollars in millions) Otis UTC Climate, Controls & Security Pratt & Whitney UTC Aerospace Systems Total Product Type Commercial and industrial, non aerospace $ 3,344 $ 5,035 $ 5 $ 15 $ 8,399 Commercial aerospace — — 3,369 3,024 6,393 Military aerospace — — 1,362 923 2,285 Total segment $ 3,344 $ 5,035 $ 4,736 $ 3,962 17,077 Eliminations and other (372 ) Consolidated $ 16,705 Sales Type Product $ 1,525 $ 4,213 $ 2,775 $ 3,340 $ 11,853 Service 1,819 822 1,961 622 5,224 Total segment $ 3,344 $ 5,035 $ 4,736 $ 3,962 17,077 Eliminations and other (372 ) Consolidated $ 16,705	six months ended June 30, 2018 are as follows: (dollars in millions) Otis UTC Climate, Controls & Security Pratt & Whitney UTC Aerospace Systems Total Product Type Commercial and industrial, non aerospace $ 6,381 $ 9,411 $ 26 $ 30 $ 15,848 Commercial aerospace — — 6,568 5,935 12,503 Military aerospace — — 2,471 1,814 4,285 Total segment $ 6,381 $ 9,411 $ 9,065 $ 7,779 32,636 Eliminations and other (689 ) Consolidated $ 31,947 Sales Type Product $ 2,744 $ 7,811 $ 5,312 $ 6,528 $ 22,395 Service 3,637 1,600 3,753 1,251 10,241 Total segment $ 6,381 $ 9,411 $ 9,065 $ 7,779 32,636 Eliminations and other (689 ) Consolidated $ 31,947

Acquisitions, Dispositions, G40

Acquisitions, Dispositions, Goodwill and Other Intangible Assets (General Information) (Details) - USD ($)	3 Months Ended	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2018	Jun. 30, 2017	Sep. 04, 2017
Business Acquisition [Line Items]
Acquisition Cost Of Acquired Entities and Interest in Affiliates		$ 134,000,000
Gain on sale of Taylor Company		795,000,000	$ 0
Unsecured bridge loan credit agreement				$ 6,500,000,000
Proceeds from sale of Taylor Company		1,000,000,000
After tax gain on sale of Taylor Company		588,000,000
Rockwell Collins [Member]
Business Acquisition [Line Items]
Business Acquisition, Date of Acquisition Agreement	Sep. 4, 2017
Business Acquisition, Name of Acquired Entity	Rockwell Collins, Inc. (Rockwell Collins)
Business Acquisition Cash Paid Per Share	$ 93.33
Business Acquisition UTC stock payable	46.67
Payments to Acquire Businesses, Gross	15,000,000,000
Unsecured bridge loan credit agreement	6,500,000,000	6,500,000,000
Business Acquisition, Assumed Long-term Debt	$ 7,000,000,000	$ 7,000,000,000

Acquisition, Dispositions, Good

Acquisition, Dispositions, Goodwill and Other Intangible Assets (Goodwill) (Details) $ in Millions	6 Months Ended
	Jun. 30, 2018USD ($)
Goodwill [Line Items]
Goodwill - Beginning Balance	$ 27,910
Goodwill Resulting from Business Combinations	63
Goodwill - Foreign Currency Translation and Other	(274)
Goodwill - Ending Balance	27,699
Taylor Company [Member]
Goodwill [Line Items]
Goodwill - Foreign Currency Translation and Other	150
Otis [Member]
Goodwill [Line Items]
Goodwill - Beginning Balance	1,737
Goodwill Resulting from Business Combinations	5
Goodwill - Foreign Currency Translation and Other	(34)
Goodwill - Ending Balance	1,708
UTC Climate, Controls & Security [Member]
Goodwill [Line Items]
Goodwill - Beginning Balance	10,009
Goodwill Resulting from Business Combinations	1
Goodwill - Foreign Currency Translation and Other	(211)
Goodwill - Ending Balance	9,799
Pratt & Whitney [Member]
Goodwill [Line Items]
Goodwill - Beginning Balance	1,511
Goodwill Resulting from Business Combinations	57
Goodwill - Foreign Currency Translation and Other	(3)
Goodwill - Ending Balance	1,565
UTC Aerospace Systems [Member]
Goodwill [Line Items]
Goodwill - Beginning Balance	14,650
Goodwill Resulting from Business Combinations	0
Goodwill - Foreign Currency Translation and Other	(26)
Goodwill - Ending Balance	14,624
Total Segments [Member]
Goodwill [Line Items]
Goodwill - Beginning Balance	27,907
Goodwill Resulting from Business Combinations	63
Goodwill - Foreign Currency Translation and Other	(274)
Goodwill - Ending Balance	27,696
Eliminations and other [Member]
Goodwill [Line Items]
Goodwill - Beginning Balance	3
Goodwill Resulting from Business Combinations	0
Goodwill - Foreign Currency Translation and Other	0
Goodwill - Ending Balance	$ 3

Acquisitions, Dispositions, G42

Acquisitions, Dispositions, Goodwill and Other Intangible Assets (Intangible Assets) (Details) - USD ($) $ in Millions	Jun. 30, 2018	Dec. 31, 2017
Finite-Lived Intangible Assets [Line Items]
Gross Amount	$ 20,270	$ 20,038
Accumulated Amortization	6,605	6,251
Unamortized: Trademarks and Other	2,074	2,096
Total Intangible Assets Gross Excluding Goodwill	22,344	22,134
Service portfolios [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Amount	2,187	2,178
Accumulated Amortization	1,588	1,534
Patents and trademarks [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Amount	364	399
Accumulated Amortization	226	233
Collaboration intangible assets [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Amount	4,294	4,109
Accumulated Amortization	510	384
Customer relationships and other [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Amount	13,425	13,352
Accumulated Amortization	$ 4,281	$ 4,100

Acquisitions, Dispositions, G43

Acquisitions, Dispositions, Goodwill and Other Intangible Assets (Amortization Expense) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net [Abstract]
Amortization of Intangible Assets	$ 232	$ 210	$ 455	$ 415
Amortization Expense, Remaining 2018	457		457
Amortization Expense, 2019	873		873
Amortization Expense, 2020	874		874
Amortization Expense, 2021	899		899
Amortization Expense, 2022	896		896
Amortization Expense, 2023	$ 918		$ 918

Revenue Recognition Revenue R44

Revenue Recognition Revenue Recognition (Details) - USD ($)	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017	Dec. 31, 2017	Mar. 31, 2018	Jan. 01, 2018	Mar. 31, 2017	Dec. 31, 2016
Inventory Costs in Excess of Average Cost Per Unit	$ 0		$ 0		$ 438,000,000
Capitalized Contract Cost, Gross							$ 700,000,000
Previously Recognized Customer Funding to Contract Liability							850,000,000
Revenues	16,705,000,000	$ 15,280,000,000	31,947,000,000	$ 29,095,000,000
Research and development	589,000,000	619,000,000	1,143,000,000	1,205,000,000
Selling, general and administrative	1,759,000,000	1,590,000,000	3,470,000,000	3,127,000,000
Total costs and expenses	14,770,000,000	13,373,000,000	28,315,000,000	25,632,000,000
Other income, net	941,000,000	257,000,000	1,172,000,000	845,000,000
Operating profit	2,876,000,000	2,164,000,000	4,804,000,000	4,308,000,000
Non-service pension cost (benefit)	(192,000,000)	(126,000,000)	(383,000,000)	(249,000,000)
Interest expense, net	234,000,000	226,000,000	463,000,000	439,000,000
Income from operations before income taxes	2,834,000,000	2,064,000,000	4,724,000,000	4,118,000,000
Income tax expense	695,000,000	532,000,000	1,217,000,000	1,118,000,000
Net Income from operations	2,139,000,000	1,532,000,000	3,507,000,000	3,000,000,000
Less: Noncontrolling interest in subsidiaries' earnings from operations	91,000,000	93,000,000	162,000,000	175,000,000
Net income attributable to common shareowners	2,048,000,000	1,439,000,000	3,345,000,000	2,825,000,000
Accounts receivable, net	11,973,000,000		11,973,000,000		12,595,000,000
Inventories and contracts in progress, net	8,979,000,000		8,979,000,000		9,881,000,000
Contract with Customer, Asset, Net, Current	3,273,000,000		3,273,000,000		0
Other assets, current	1,263,000,000		1,263,000,000		1,397,000,000
Future income tax benefits	1,626,000,000		1,626,000,000		1,723,000,000
Intangible assets, net	15,739,000,000		15,739,000,000		15,883,000,000
Other assets	7,071,000,000		7,071,000,000		5,988,000,000
Accrued liabilities	8,730,000,000		8,730,000,000		12,316,000,000
Contract with Customer, Liability, Current	(5,652,000,000)		(5,652,000,000)		0
Other long-term liabilities	13,190,000,000		13,190,000,000		12,952,000,000
Noncontrolling interest	1,982,000,000	1,713,000,000	1,982,000,000	1,713,000,000	1,811,000,000	$ 1,958,000,000		$ 1,678,000,000	$ 1,590,000,000
Retained earnings	57,027,000,000		57,027,000,000		55,242,000,000
Contract with Customer, Asset, Reclassified to Receivable	(14,401,000,000)
Revenue, Remaining Performance Obligation, Amount	$ 103,400,000,000		$ 103,400,000,000
Revenue, Remaining Performance Obligations, to be recognized within 24 months	45.00%		45.00%
Contract Asset and Liability [Abstract]
Contract with Customer, Asset, Net, Current	$ 3,273,000,000		$ 3,273,000,000		0
Contract with Customer, Asset, Net, Noncurrent	1,015,000,000		1,015,000,000
Contract with Customer, Asset, Net	4,288,000,000		4,288,000,000
Contract with Customer, Liability, Current	(5,652,000,000)		(5,652,000,000)		0
Contract with Customer, Liability, Noncurrent	(4,838,000,000)		(4,838,000,000)
Contract with Customer, Liability	(10,490,000,000)		(10,490,000,000)
Contract with Customer, Net	(6,202,000,000)		(6,202,000,000)				(6,365,000,000)
Contract with Customer, Liability, Revenue Recognized	12,701,000,000				$ 1,728,000,000
Product [Member]
Revenues	11,520,000,000	10,661,000,000	21,778,000,000	20,298,000,000
Cost of Goods and Services Sold	9,154,000,000	7,957,000,000	17,170,000,000	15,268,000,000
Service [Member]
Revenues	5,185,000,000	4,619,000,000	10,169,000,000	8,797,000,000
Cost of Goods and Services Sold	3,268,000,000	$ 3,207,000,000	6,532,000,000	$ 6,032,000,000
Difference between Revenue Guidance in Effect before and after Topic 606 [Member]
Satisfied Portion of the Performance Obligation of CIP							220,000,000
Inventory Costs in Excess of Average Cost Per Unit							438,000,000
Revenues	184,000,000		406,000,000
Research and development	(18,000,000)		(37,000,000)
Selling, general and administrative	0		0
Total costs and expenses	201,000,000		408,000,000
Other income, net	(2,000,000)		(3,000,000)
Operating profit	(19,000,000)		(5,000,000)
Non-service pension cost (benefit)	0		0
Interest expense, net	0		0
Income from operations before income taxes	(19,000,000)		(5,000,000)
Income tax expense	(5,000,000)		(1,000,000)
Net Income from operations	(14,000,000)		(4,000,000)
Less: Noncontrolling interest in subsidiaries' earnings from operations	4,000,000		6,000,000
Net income attributable to common shareowners	(18,000,000)		(10,000,000)
Accounts receivable, net	1,459,000,000		1,459,000,000
Inventories and contracts in progress, net	2,114,000,000		2,114,000,000
Contract with Customer, Asset, Net, Current	3,273,000,000		3,273,000,000
Other assets, current	13,000,000		13,000,000
Future income tax benefits	26,000,000		26,000,000
Intangible assets, net	68,000,000		68,000,000
Other assets	973,000,000		973,000,000
Accrued liabilities	5,557,000,000		5,557,000,000
Contract with Customer, Liability, Current	(5,652,000,000)		(5,652,000,000)
Other long-term liabilities	1,010,000,000		1,010,000,000
Noncontrolling interest	5,000,000		5,000,000
Retained earnings	(490,000,000)		(490,000,000)				$ 480,000,000
Contract Asset and Liability [Abstract]
Contract with Customer, Asset, Net, Current	3,273,000,000		3,273,000,000
Contract with Customer, Liability, Current	(5,652,000,000)		(5,652,000,000)
Difference between Revenue Guidance in Effect before and after Topic 606 [Member] | Product [Member]
Revenues	114,000,000		205,000,000
Cost of Goods and Services Sold	179,000,000		309,000,000
Difference between Revenue Guidance in Effect before and after Topic 606 [Member] | Service [Member]
Revenues	70,000,000		201,000,000
Cost of Goods and Services Sold	40,000,000		136,000,000
Calculated under Revenue Guidance in Effect before Topic 606 [Member]
Revenues	16,521,000,000		31,541,000,000
Research and development	607,000,000		1,180,000,000
Selling, general and administrative	1,759,000,000		3,470,000,000
Total costs and expenses	14,569,000,000		27,907,000,000
Other income, net	943,000,000		1,175,000,000
Operating profit	2,895,000,000		4,809,000,000
Non-service pension cost (benefit)	(192,000,000)		(383,000,000)
Interest expense, net	234,000,000		463,000,000
Income from operations before income taxes	2,853,000,000		4,729,000,000
Income tax expense	700,000,000		1,218,000,000
Net Income from operations	2,153,000,000		3,511,000,000
Less: Noncontrolling interest in subsidiaries' earnings from operations	87,000,000		156,000,000
Net income attributable to common shareowners	2,066,000,000		3,355,000,000
Accounts receivable, net	13,432,000,000		13,432,000,000
Inventories and contracts in progress, net	11,093,000,000		11,093,000,000
Contract with Customer, Asset, Net, Current	0		0
Other assets, current	1,276,000,000		1,276,000,000
Future income tax benefits	1,600,000,000		1,600,000,000
Intangible assets, net	15,807,000,000		15,807,000,000
Other assets	6,098,000,000		6,098,000,000
Accrued liabilities	14,287,000,000		14,287,000,000
Contract with Customer, Liability, Current	0		0
Other long-term liabilities	12,180,000,000		12,180,000,000
Noncontrolling interest	1,977,000,000		1,977,000,000
Retained earnings	57,517,000,000		57,517,000,000
Contract Asset and Liability [Abstract]
Contract with Customer, Asset, Net, Current	0		0
Contract with Customer, Liability, Current	0		0
Calculated under Revenue Guidance in Effect before Topic 606 [Member] | Product [Member]
Revenues	11,406,000,000		21,573,000,000
Cost of Goods and Services Sold	8,975,000,000		16,861,000,000
Calculated under Revenue Guidance in Effect before Topic 606 [Member] | Service [Member]
Revenues	5,115,000,000		9,968,000,000
Cost of Goods and Services Sold	$ 3,228,000,000		$ 6,396,000,000

Earnings Per Share (Details)

Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Net income attributable to common shareowners:
Net income from continuing operations	$ 2,048	$ 1,439	$ 3,345	$ 2,825
Net income attributable to common shareowners	$ 2,048	$ 1,439	$ 3,345	$ 2,825
Basic weighted average number of shares outstanding	790.5	788.7	790.2	791.1
Stock awards and equity units	9.1	9.5	9.8	9.3
Diluted weighted average number of shares outstanding	799.6	798.2	800	800.4
Earnings Per Share of Common Stock - Basic:
Net income from continuing operations	$ 2.59	$ 1.83	$ 4.23	$ 3.57
Net income attributable to common shareowners	2.59	1.83	4.23	3.57
Earnings Per Share of Common Stock - Diluted:
Net income from continuing operations	2.56	1.80	4.18	3.53
Net income attributable to common shareowners	$ 2.56	$ 1.80	$ 4.18	$ 3.53
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	5.1	5.8	5.1	6.4

Inventories and Contracts in 46

Inventories and Contracts in Progress (Details) - USD ($)	Jun. 30, 2018	Dec. 31, 2017
Inventory Disclosure [Abstract]
Raw materials	$ 2,298,000,000	$ 2,038,000,000
Work-in-process	2,306,000,000	3,366,000,000
Finished goods	4,375,000,000	3,845,000,000
Contracts in progress	0	10,205,000,000
Inventory before payments and billings	8,979,000,000	19,454,000,000
Progress payments, secured by lien, on U.S. Government contracts	0	236,000,000
Billings on contracts in progress	0	9,337,000,000
Inventories and contracts in progress, net	8,979,000,000	9,881,000,000
Inventory [Line Items]
Inventory Costs in Excess of Average Cost Per Unit	0	438,000,000
UTC Aerospace Systems [Member]
Inventory [Line Items]
Other Inventory, Capitalized Costs, Gross	$ 0	$ 127,000,000

Borrowings and Lines of Credi47

Borrowings and Lines of Credit (Short-Term Borrowings) (Details) - USD ($) $ in Millions	Jun. 30, 2018	Dec. 31, 2017
Short-term Debt [Line Items]
Commercial paper	$ 876	$ 300
Other borrowings	109	92
Total short-term borrowings	$ 985	$ 392

Borrowing and Lines of Credit (

Borrowing and Lines of Credit (Narrative) (Details) € in Millions	6 Months Ended
	Jun. 30, 2018USD ($)	Jun. 30, 2018EUR (€)	Sep. 04, 2017USD ($)
Line of Credit Facility [Line Items]
Aggregate Line of Credit Facility Maximum Borrowing Capacity	$ 4,350,000,000
Maximum Commercial Paper Borrowing Authority	4,350,000,000
Commercial paper, euro-denominated	876,000,000	€ 750
Unsecured bridge loan credit agreement			$ 6,500,000,000
Revolving Credit Agreement [Member]
Line of Credit Facility [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity	$ 2,200,000,000
Line of Credit Facility, Expiration Date	Aug. 5, 2021
Multicurrency Revolving Credit Agreement [Member]
Line of Credit Facility [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity	$ 2,150,000,000
Line of Credit Facility, Expiration Date	Aug. 5, 2021

Borrowings and Lines of Credi49

Borrowings and Lines of Credit (Long-Term Debt) (Details) - USD ($) $ in Millions		3 Months Ended	6 Months Ended
		Jun. 30, 2018	Jun. 30, 2018	Dec. 31, 2017
Debt Instrument [Line Items]
Project financing obligations		$ 206	$ 206	$ 158
Other (including capitalized leases)		197	197	195
Total principal long-term debt		27,361	27,361	27,118
Other (fair market value adjustments and discounts)		(37)	(37)	(25)
Total long-term debt		27,324	27,324	27,093
Less: current portion		78	78	2,104
Long-term debt, net of current portion		$ 27,246	$ 27,246	24,989
Notes 6.800% Due 2018 [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage		6.80%	6.80%
Debt Instrument, Maturity Date, Description			2,018
Debt Instrument, Carrying Amount		$ 0	$ 0	99
EURIBOR plus 0.800% floating rate notes due 2018 [Member]
Debt Instrument [Line Items]
Debt Instrument, Maturity Date, Description			2,018
Debt Instrument, Call Feature			The three-month EURIBOR rate as of June 30, 2018 was approximately -0.321%. The notes may be redeemed at our option in whole, but not in part, at any time in the event of certain developments affecting U.S. taxation.
Debt Instrument, Carrying Amount	[1]	$ 0	$ 0	890
Debt Instrument, Interest Rate Terms		EURIBOR plus 0.800% floating rate notes due 2018 (€750 million principal value) 2
Junior subordinated notes 1.778% due 2018 [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage		1.778%	1.778%
Debt Instrument, Maturity Date, Description			2,018
Debt Instrument, Carrying Amount		$ 0	$ 0	1,100
LIBOR plus 0.350% floating rate notes due 2019 [Member]
Debt Instrument [Line Items]
Debt Instrument, Maturity Date, Description			2,019
Debt Instrument, Call Feature			The three-month LIBOR rate as of June 30, 2018 was approximately 2.336%.
Debt Instrument, Carrying Amount	[2]	$ 350	$ 350	350
Debt Instrument, Interest Rate Terms			LIBOR plus 0.350% floating rate notes due 2019 3
Notes 1.500% notes 2019 [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage		1.50%	1.50%
Debt Instrument, Maturity Date, Description			2,019
Debt Instrument, Call Feature			We may redeem these notes at our option pursuant to their terms.
Debt Instrument, Carrying Amount	[3]	$ 650	$ 650	650
EURIBOR plus 0.15% floating rate notes due 2019 [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage		0.15%	0.15%
Debt Instrument, Maturity Date, Description			2,019
Debt Instrument, Call Feature			The three-month EURIBOR rate as of June 30, 2018 was approximately -0.321%. The notes may be redeemed at our option in whole, but not in part, at any time in the event of certain developments affecting U.S. taxation.
Debt Instrument, Carrying Amount	[1]	$ 876	$ 876	890
Debt Instrument, Interest Rate Terms		EURIBOR plus 0.15% floating rate notes due 2019 (€750 million principal value) 2
Notes 8.875% Due 2019 [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage		8.875%	8.875%
Debt Instrument, Maturity Date, Description			2,019
Debt Instrument, Carrying Amount		$ 271	$ 271	271
Notes 4.875% Due 2020 [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage		4.875%	4.875%
Debt Instrument, Maturity Date, Description			2,020
Debt Instrument, Call Feature			We may redeem these notes at our option pursuant to their terms.
Debt Instrument, Carrying Amount	[3]	$ 171	$ 171	171
Notes 4.500% Due 2020 [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage		4.50%	4.50%
Debt Instrument, Maturity Date, Description			2,020
Debt Instrument, Call Feature			We may redeem these notes at our option pursuant to their terms.
Debt Instrument, Carrying Amount	[3]	$ 1,250	$ 1,250	1,250
Notes 1.900% Due 2020 [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage		1.90%	1.90%
Debt Instrument, Maturity Date, Description			2,020
Debt Instrument, Call Feature			We may redeem these notes at our option pursuant to their terms.
Debt Instrument, Carrying Amount	[3]	$ 1,000	$ 1,000	1,000
EURIBOR plus 0.20% floating rate notes due 2020 [Member]
Debt Instrument [Line Items]
Debt Instrument, Maturity Date, Description			2,020
Debt Instrument, Call Feature			The three-month EURIBOR rate as of June 30, 2018 was approximately -0.321%. The notes may be redeemed at our option in whole, but not in part, at any time in the event of certain developments affecting U.S. taxation.
Debt Instrument, Carrying Amount	[1]	$ 876	$ 876	0
Debt Instrument, Interest Rate Terms		EURIBOR plus 0.20% floating rate notes due 2020 (€750 million principal value) 2
Notes 8.750% Due 2021 [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage		8.75%	8.75%
Debt Instrument, Maturity Date, Description			2,021
Debt Instrument, Carrying Amount		$ 250	$ 250	250
Notes 1.950% Due 2021 [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage		1.95%	1.95%
Debt Instrument, Maturity Date, Description			2,021
Debt Instrument, Call Feature			We may redeem these notes at our option pursuant to their terms.
Debt Instrument, Carrying Amount	[3]	$ 750	$ 750	750
Note 1.125% Due 2021 [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage		1.125%	1.125%
Debt Instrument, Maturity Date, Description			2,021
Debt Instrument, Call Feature			We may redeem these notes at our option pursuant to their terms.
Debt Instrument, Carrying Amount	[2]	$ 1,110	$ 1,110	1,127
Notes 2.300% Due 2022 [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage		2.30%	2.30%
Debt Instrument, Maturity Date, Description			2,022
Debt Instrument, Call Feature			We may redeem these notes at our option pursuant to their terms.
Debt Instrument, Carrying Amount	[3]	$ 500	$ 500	500
Notes 3.100% Due 2022 [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage		3.10%	3.10%
Debt Instrument, Maturity Date, Description			2,022
Debt Instrument, Call Feature			We may redeem these notes at our option pursuant to their terms.
Debt Instrument, Carrying Amount	[3]	$ 2,300	$ 2,300	2,300
Notes 1.250% due 2023 [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage		1.25%	1.25%
Debt Instrument, Maturity Date, Description			2,023
Debt Instrument, Call Feature			We may redeem these notes at our option pursuant to their terms.
Debt Instrument, Carrying Amount	[2]	$ 876	$ 876	890
Notes 2.800% Due 2024 [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage		2.80%	2.80%
Debt Instrument, Maturity Date, Description			2,024
Debt Instrument, Call Feature			We may redeem these notes at our option pursuant to their terms.
Debt Instrument, Carrying Amount	[3]	$ 800	$ 800	800
Notes 1.150% Due 2024 [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage		1.15%	1.15%
Debt Instrument, Maturity Date, Description			2,024
Debt Instrument, Call Feature			We may redeem these notes at our option pursuant to their terms.
Debt Instrument, Carrying Amount	[2]	$ 876	$ 876	0
Notes 1.875% Due 2026 [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage		1.875%	1.875%
Debt Instrument, Maturity Date, Description			2,026
Debt Instrument, Call Feature			We may redeem these notes at our option pursuant to their terms.
Debt Instrument, Carrying Amount	[3]	$ 584	$ 584	593
Notes 2.650% Due 2026 [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage		2.65%	2.65%
Debt Instrument, Maturity Date, Description			2,026
Debt Instrument, Call Feature			We may redeem these notes at our option pursuant to their terms.
Debt Instrument, Carrying Amount	[3]	$ 1,150	$ 1,150	1,150
Notes 3.125% Due 2027 [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage		3.125%	3.125%
Debt Instrument, Maturity Date, Description			2,027
Debt Instrument, Call Feature			We may redeem these notes at our option pursuant to their terms.
Debt Instrument, Carrying Amount	[3]	$ 1,100	$ 1,100	1,100
Notes 7.100% Due 2027 [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage		7.10%	7.10%
Debt Instrument, Maturity Date, Description			2,027
Debt Instrument, Carrying Amount		$ 141	$ 141	141
Notes 6.700% Due 2028 [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage		6.70%	6.70%
Debt Instrument, Maturity Date, Description			2,028
Debt Instrument, Carrying Amount		$ 400	$ 400	400
Notes 7.500% Due 2029 [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage		7.50%	7.50%
Debt Instrument, Maturity Date, Description			2,029
Debt Instrument, Call Feature			We may redeem these notes at our option pursuant to their terms.
Debt Instrument, Carrying Amount	[3]	$ 550	$ 550	550
Notes 2.150% Due 2030 [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage		2.15%	2.15%
Debt Instrument, Maturity Date, Description			2,030
Debt Instrument, Call Feature			We may redeem these notes at our option pursuant to their terms.
Debt Instrument, Carrying Amount	[3]	$ 584	$ 584	0
Notes 5.400% Due 2035 [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage		5.40%	5.40%
Debt Instrument, Maturity Date, Description			2,035
Debt Instrument, Call Feature			We may redeem these notes at our option pursuant to their terms.
Debt Instrument, Carrying Amount	[3]	$ 600	$ 600	600
Notes 6.050% Due 2036 [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage		6.05%	6.05%
Debt Instrument, Maturity Date, Description			2,036
Debt Instrument, Call Feature			We may redeem these notes at our option pursuant to their terms.
Debt Instrument, Carrying Amount	[3]	$ 600	$ 600	600
Notes 6.800% Due 2036 [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage		6.80%	6.80%
Debt Instrument, Maturity Date, Description			2,036
Debt Instrument, Call Feature			We may redeem these notes at our option pursuant to their terms.
Debt Instrument, Carrying Amount	[3]	$ 134	$ 134	134
Notes 7.000% Due 2038 [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage		7.00%	7.00%
Debt Instrument, Maturity Date, Description			2,038
Debt Instrument, Carrying Amount		$ 159	$ 159	159
Notes 6.125% Due 2038 [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage		6.125%	6.125%
Debt Instrument, Maturity Date, Description			2,038
Debt Instrument, Call Feature			We may redeem these notes at our option pursuant to their terms.
Debt Instrument, Carrying Amount	[3]	$ 1,000	$ 1,000	1,000
Notes 5.700% Due 2040 [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage		5.70%	5.70%
Debt Instrument, Maturity Date, Description			2,040
Debt Instrument, Call Feature			We may redeem these notes at our option pursuant to their terms.
Debt Instrument, Carrying Amount	[3]	$ 1,000	$ 1,000	1,000
Notes 4.500% Due 2042 [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage		4.50%	4.50%
Debt Instrument, Maturity Date, Description			2,042
Debt Instrument, Call Feature			We may redeem these notes at our option pursuant to their terms.
Debt Instrument, Carrying Amount	[3]	$ 3,500	$ 3,500	3,500
Notes 4.150% Due 2045 [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage		4.15%	4.15%
Debt Instrument, Maturity Date, Description			2,045
Debt Instrument, Call Feature			We may redeem these notes at our option pursuant to their terms.
Debt Instrument, Carrying Amount	[3]	$ 850	$ 850	850
Notes 3.750% Due 2046 [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage		3.75%	3.75%
Debt Instrument, Maturity Date, Description			2,046
Debt Instrument, Call Feature			We may redeem these notes at our option pursuant to their terms.
Debt Instrument, Carrying Amount	[3]	$ 1,100	$ 1,100	1,100
Notes 4.050% Due 2047 [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage		4.05%	4.05%
Debt Instrument, Maturity Date, Description			2,047
Debt Instrument, Call Feature			We may redeem these notes at our option pursuant to their terms.
Debt Instrument, Carrying Amount	[3]	$ 600	$ 600	$ 600
[1]	The three-month EURIBOR rate as of June 30, 2018 was approximately -0.321%. The notes may be redeemed at our option in whole, but not in part, at any time in the event of certain developments affecting U.S. taxation.
[2]	The three-month LIBOR rate as of June 30, 2018 was approximately 2.336%.
[3]	We may redeem these notes at our option pursuant to their terms.

Borrowings and Lines of Credi50

Borrowings and Lines of Credit Borrowings and lines of Credit (Current Year Actions) (Details) € in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018USD ($)	Jun. 30, 2018EUR (€)	Jun. 30, 2017
Debt Instrument [Line Items]
Average Years of Maturity of Long Term Debt			11 years	11 years
Average interest expense rate	3.50%	3.60%	3.50%	3.50%	3.60%
Notes 1.150% Due 2024 [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	1.15%		1.15%	1.15%
Debt Instrument, Maturity Date, Description			2,024	2,024
Proceeds from Issuance of Debt				€ 750
Notes 2.150% Due 2030 [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	2.15%		2.15%	2.15%
Debt Instrument, Maturity Date, Description			2,030	2,030
Proceeds from Issuance of Debt				€ 500
EURIBOR plus 0.20% floating rate notes due 2020 [Member]
Debt Instrument [Line Items]
Debt Instrument, Maturity Date, Description			2,020	2,020
Proceeds from Issuance of Debt				€ 750
Junior subordinated notes 1.778% due 2018 [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	1.778%		1.778%	1.778%
Debt Instrument, Maturity Date, Description			2,018	2,018
Repayments of Debt | $			$ 1,100
Notes 6.800% Due 2018 [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	6.80%		6.80%	6.80%
Debt Instrument, Maturity Date, Description			2,018	2,018
Repayments of Debt | $			$ 99
EURIBOR plus 0.800% floating rate notes due 2018 [Member]
Debt Instrument [Line Items]
Debt Instrument, Maturity Date, Description			2,018	2,018
Repayments of Debt				€ 750

Income Taxes (Unrecognized Tax

Income Taxes (Unrecognized Tax Benefit Changes) (Details) $ in Millions	Jun. 30, 2018USD ($)
Minimum [Member]
Significant Change In Unrecognized Tax Benefits Is Reasonably Possible [Line Items]
Decrease in Unrecognized Tax Benefits is Reasonably Possible, Estimated Range of Change	$ 50
Maximum [Member]
Significant Change In Unrecognized Tax Benefits Is Reasonably Possible [Line Items]
Decrease in Unrecognized Tax Benefits is Reasonably Possible, Estimated Range of Change	$ 625

Employee Benefit Plans (Details

Employee Benefit Plans (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Defined Benefit Plan Disclosure [Line Items]
Research and development	$ 589,000,000	$ 619,000,000	$ 1,143,000,000	$ 1,205,000,000
Pension Contributions			59,000,000	79,000,000
Contributions - Defined benefit plans	22,000,000	33,000,000	59,000,000	79,000,000
Contributions - Defined contribution plans	105,000,000	86,000,000	199,000,000	176,000,000
Selling, general and administrative	1,759,000,000	1,590,000,000	3,470,000,000	3,127,000,000
Other Operating Income	941,000,000	257,000,000	1,172,000,000	845,000,000
Non-service pension cost (benefit)	(192,000,000)	(126,000,000)	(383,000,000)	(249,000,000)
Previously Reported [Member]
Defined Benefit Plan Disclosure [Line Items]
Research and development		609,000,000		1,186,000,000
Selling, general and administrative		1,538,000,000		3,020,000,000
Non-service pension cost (benefit)		0		0
Accounting Standards Update 2017-07 [Member]
Defined Benefit Plan Disclosure [Line Items]
Research and development		10,000,000		19,000,000
Selling, general and administrative		52,000,000		107,000,000
Non-service pension cost (benefit)		(126,000,000)		(249,000,000)
Domestic Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Pension Contributions	0	0	0	0
Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	93,000,000	93,000,000	186,000,000	186,000,000
Interest cost	278,000,000	279,000,000	557,000,000	557,000,000
Expected return on plan assets	562,000,000	541,000,000	1,125,000,000	1,081,000,000
Amortization of prior service credit	(10,000,000)	(9,000,000)	(20,000,000)	(18,000,000)
Recognized actuarial net loss (gain)	(101,000,000)	(143,000,000)	(202,000,000)	(286,000,000)
Net settlement and curtailment (gain) loss	2,000,000	2,000,000	3,000,000	1,000,000
Total net periodic benefit (income) cost	(102,000,000)	(37,000,000)	(203,000,000)	(71,000,000)
Defined Benefit Plan, Accumulated Benefit Obligation, Increase (Decrease) for Plan Amendment			(170,000,000)
Other Postretirement Benefits Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	0	1,000,000	1,000,000	2,000,000
Interest cost	6,000,000	6,000,000	12,000,000	13,000,000
Expected return on plan assets	0	0	0	0
Amortization of prior service credit	(1,000,000)	0	(2,000,000)	0
Recognized actuarial net loss (gain)	2,000,000	2,000,000	4,000,000	5,000,000
Net settlement and curtailment (gain) loss	0	0	0	0
Total net periodic benefit (income) cost	3,000,000	5,000,000	7,000,000	10,000,000
Product [Member]
Defined Benefit Plan Disclosure [Line Items]
Cost of Goods and Services Sold	9,154,000,000	7,957,000,000	17,170,000,000	15,268,000,000
Product [Member] | Previously Reported [Member]
Defined Benefit Plan Disclosure [Line Items]
Cost of Goods and Services Sold		7,907,000,000		15,170,000,000
Product [Member] | Accounting Standards Update 2017-07 [Member]
Defined Benefit Plan Disclosure [Line Items]
Cost of Goods and Services Sold		50,000,000		98,000,000
Service [Member]
Defined Benefit Plan Disclosure [Line Items]
Cost of Goods and Services Sold	$ 3,268,000,000	3,207,000,000	$ 6,532,000,000	6,032,000,000
Service [Member] | Previously Reported [Member]
Defined Benefit Plan Disclosure [Line Items]
Cost of Goods and Services Sold		3,193,000,000		6,007,000,000
Service [Member] | Accounting Standards Update 2017-07 [Member]
Defined Benefit Plan Disclosure [Line Items]
Cost of Goods and Services Sold		$ 14,000,000		$ 25,000,000

Restructuring and Other Costs53

Restructuring and Other Costs (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended	12 Months Ended
	Jun. 30, 2018	Mar. 31, 2018	Jun. 30, 2018	Dec. 31, 2017
Restructuring Cost and Reserve [Line Items]
Restructuring Charges			$ (149)
Cost of Sales [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges			(86)
Selling, General and Administrative Expenses [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges			(65)
Non-service pension cost (benefit) [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges			(2)
Current Year Actions [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges			(73)
Restructuring Reserve	$ 48	$ 8	48
Net pre-tax restructuring costs (reversals)	61	12	73
Utilization and foreign exchange	21		25
Expected Costs	135		135
Remaining Costs	62		62
Current Year Actions [Member] | Cost of Sales [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges			(38)
Current Year Actions [Member] | Selling, General and Administrative Expenses [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges			(37)
Current Year Actions [Member] | Non-service pension cost (benefit) [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges			(2)
Current Year Actions [Member] | Severance [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve	48	8	48
Net pre-tax restructuring costs (reversals)	60		71
Utilization and foreign exchange	20		23
Current Year Actions [Member] | Facility Exit, Lease Termination and Other Costs
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve	0	0	0
Net pre-tax restructuring costs (reversals)	1		2
Utilization and foreign exchange	1		2
Prior Year Actions [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges			(67)
Restructuring Reserve	70	86	70	$ 85
Net pre-tax restructuring costs (reversals)	16	51	67	176
Utilization and foreign exchange	32		82
Expected Costs	325		325
Remaining Costs	82		82
Prior Year Actions [Member] | Cost of Sales [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges			(42)
Prior Year Actions [Member] | Selling, General and Administrative Expenses [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges			(25)
Prior Year Actions [Member] | Severance [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve	73	88	73	84
Net pre-tax restructuring costs (reversals)	8		47
Utilization and foreign exchange	23		58
Prior Year Actions [Member] | Facility Exit, Lease Termination and Other Costs
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve	(3)	(2)	(3)	1
Net pre-tax restructuring costs (reversals)	8		20
Utilization and foreign exchange	9		24
Two Years Prior Actions [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges			(9)
Restructuring Reserve	91		91
Otis [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges			(47)
Otis [Member] | Current Year Actions [Member]
Restructuring Cost and Reserve [Line Items]
Net pre-tax restructuring costs (reversals)	18	9
Expected Costs	31		31
Remaining Costs	4		4
Otis [Member] | Prior Year Actions [Member]
Restructuring Cost and Reserve [Line Items]
Net pre-tax restructuring costs (reversals)	4	15		43
Expected Costs	73		73
Remaining Costs	11		11
UTC Climate, Controls & Security [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges			(35)
UTC Climate, Controls & Security [Member] | Current Year Actions [Member]
Restructuring Cost and Reserve [Line Items]
Net pre-tax restructuring costs (reversals)	23	1
Expected Costs	77		77
Remaining Costs	53		53
UTC Climate, Controls & Security [Member] | Prior Year Actions [Member]
Restructuring Cost and Reserve [Line Items]
Net pre-tax restructuring costs (reversals)	(5)	7		76
Expected Costs	81		81
Remaining Costs	3		3
Pratt & Whitney [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges			(3)
Pratt & Whitney [Member] | Current Year Actions [Member]
Restructuring Cost and Reserve [Line Items]
Net pre-tax restructuring costs (reversals)	3	0
Expected Costs	3		3
Remaining Costs	0		0
Pratt & Whitney [Member] | Prior Year Actions [Member]
Restructuring Cost and Reserve [Line Items]
Net pre-tax restructuring costs (reversals)	0	0		7
Expected Costs	7		7
Remaining Costs	0		0
UTC Aerospace Systems [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges			(60)
UTC Aerospace Systems [Member] | Current Year Actions [Member]
Restructuring Cost and Reserve [Line Items]
Net pre-tax restructuring costs (reversals)	15	0
Expected Costs	20		20
Remaining Costs	5		5
UTC Aerospace Systems [Member] | Prior Year Actions [Member]
Restructuring Cost and Reserve [Line Items]
Net pre-tax restructuring costs (reversals)	17	29		43
Expected Costs	157		157
Remaining Costs	68		68
Eliminations and other [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Charges			(4)
Eliminations and other [Member] | Current Year Actions [Member]
Restructuring Cost and Reserve [Line Items]
Net pre-tax restructuring costs (reversals)	(2)	(2)
Expected Costs	4		4
Remaining Costs	0		0
Eliminations and other [Member] | Prior Year Actions [Member]
Restructuring Cost and Reserve [Line Items]
Net pre-tax restructuring costs (reversals)	0	$ 0		$ 7
Expected Costs	7		7
Remaining Costs	$ 0		$ 0

Financial Instruments (Details)

Financial Instruments (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017	Dec. 31, 2017
Derivatives, Fair Value [Line Items]
Derivatives designated as hedging instruments, Asset Derivatives	$ 50		$ 50		$ 178
Derivatives not designated as hedging instruments, Asset Derivatives	61		61		75
Derivatives designated as hedging instruments, Liability Derivatives	118		118		18
Derivatives not designated as hedging instruments, Liability Derivatives	96		96		60
Four Quarter Rolling Average of Notional Amount of Foreign Exchange Contracts Hedging Foreign Currency Transactions	20,500		$ 20,500		19,100
Description of Net Investment Hedge Activity			We have approximately €4.95 billion of euro-denominated long-term debt and €750 million of euro-denominated commercial paper borrowings outstanding, which qualify as a net investment hedge against our investments in European businesses. As of June 30, 2018, the net investment hedge is deemed to be effective.
Gain (loss) recorded in Accumulated other comprehensive loss	(245)	$ 66	$ (200)	$ 130
(Gain) loss reclassified from Accumulated other comprehensive loss into Product Sales (effective portion)	(1)	5	$ (28)	10
Maximum Length of Time, Foreign Currency Cash Flow Hedge			4 years 22 days
Gain recognized in Other income, net	19	$ 28	$ 70	$ 40
Foreign Currency Cash Flow Hedge Gain (Loss) to be Reclassified During Next 12 Months	(33)		(33)
Other Current Assets [Member]
Derivatives, Fair Value [Line Items]
Derivatives designated as hedging instruments, Asset Derivatives	23		23		77
Derivatives not designated as hedging instruments, Asset Derivatives	39		39		70
Other Noncurrent Assets [Member]
Derivatives, Fair Value [Line Items]
Derivatives designated as hedging instruments, Asset Derivatives	27		27		101
Derivatives not designated as hedging instruments, Asset Derivatives	22		22		5
Accrued Liabilities [Member]
Derivatives, Fair Value [Line Items]
Derivatives designated as hedging instruments, Liability Derivatives	43		43		10
Derivatives not designated as hedging instruments, Liability Derivatives	93		93		57
Other Long-term Liabilities [Member]
Derivatives, Fair Value [Line Items]
Derivatives designated as hedging instruments, Liability Derivatives	75		75		8
Derivatives not designated as hedging instruments, Liability Derivatives	$ 3		$ 3		$ 3

Fair Value Measurements (Fair V

Fair Value Measurements (Fair Value Hierarchy Classification) (Details) - USD ($) $ in Millions	Jun. 30, 2018	Dec. 31, 2017
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Short-term borrowings	$ 985	$ 392
Portion at Other than Fair Value Measurement [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Long-term receivables	132	127
Customer financing notes receivable	577	609
Short-term borrowings	985	392
Long-term debt (excluding capitalized leases)	27,301	27,067
Long-term liabilities	307	362
Estimate of Fair Value, Fair Value Disclosure [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Long-term receivables	122	121
Customer financing notes receivable	554	596
Short-term borrowings	985	392
Long-term debt (excluding capitalized leases)	27,755	29,180
Long-term liabilities	271	330
Fair Value Level 1 [Member] | Estimate of Fair Value, Fair Value Disclosure [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Long-term receivables	0	0
Customer financing notes receivable	0	0
Short-term borrowings	0	0
Long-term debt (excluding capitalized leases)	0	0
Long-term liabilities	0
Fair Value Level 2 [Member] | Estimate of Fair Value, Fair Value Disclosure [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Long-term receivables	122	121
Customer financing notes receivable	554	596
Short-term borrowings	876	300
Long-term debt (excluding capitalized leases)	27,496	28,970
Long-term liabilities	271	330
Fair Value Level 3 [Member] | Estimate of Fair Value, Fair Value Disclosure [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Long-term receivables	0	0
Customer financing notes receivable	0	0
Short-term borrowings	109	92
Long-term debt (excluding capitalized leases)	259	210
Long-term liabilities	0	0
Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	42	64
Derivative Assets	111	253
Fair Value, Measurements, Recurring [Member] | Fair Value Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	42	64
Derivative Assets	0	0
Derivative Liabilities	0	0
Fair Value, Measurements, Recurring [Member] | Fair Value Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	0	0
Derivative Assets	111	253
Derivative Liabilities	214	78
Fair Value, Measurements, Recurring [Member] | Fair Value Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	0	0
Derivative Assets	0	0
Derivative Liabilities	$ 0	$ 0

Fair Value Measurements (Commer

Fair Value Measurements (Commercial Aerospace Financing Commitments) (Details) - USD ($) $ in Billions	Jun. 30, 2018	Dec. 31, 2017
Commercial Aerospace [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing and other contractual commitments	$ 15.2	$ 15.3

Long-Term Financing Receivabl57

Long-Term Financing Receivables (Reserve and Additional Information) (Details) - USD ($) $ in Millions	Jun. 30, 2018	Dec. 31, 2017
Receivables [Abstract]
Long Term Receivables High Credit Risk	$ 140	$ 170
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment	$ 17	$ 17

Long-Term Financing Receivabl58

Long-Term Financing Receivables(Class and Credit Risk Information) (Details) - USD ($) $ in Millions	Jun. 30, 2018	Dec. 31, 2017
Financing Receivable, Recorded Investment [Line Items]
Total long-term receivables	$ 506	$ 1,397
Long-term trade accounts receivable [Member]
Financing Receivable, Recorded Investment [Line Items]
Total long-term receivables	71	973
Notes and leases receivable [Member]
Financing Receivable, Recorded Investment [Line Items]
Total long-term receivables	$ 435	$ 424

Shareowners' Equity and Nonco59

Shareowners' Equity and Noncontrolling Interest (Summary of Changes in Shareowners' Equity and Noncontrolling Interest) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Shareowners' Equity, beginning of period	$ 30,534	$ 27,594	$ 29,610	$ 27,579
Noncontrolling interest, beginning of period	1,958	1,678	1,811	1,590
Total Equity, beginning of period	32,492	29,272	31,421	29,169
Net income, Shareowners' Equity	2,048	1,439	3,345	2,825
Net Income, Noncontrolling Interest	91	93	162	175
Net income, Total Equity	2,139	1,532	3,507	3,000
Total other comprehensive income (loss), Shareowners' Equity	(747)	369	(159)	370
Total other comprehensive income (loss), Noncontrolling Interest	(38)	18	(5)	43
Total other comprehensive income (loss)	(785)	387	(164)	413
Total comprehensive income for the period, Shareowners' Equity	1,301	1,808	3,186	3,195
Total comprehensive income for the period, Noncontrolling Interest	53	111	157	218
Total comprehensive income for the period, Total Equity	1,354	1,919	3,343	3,413
Common Stock issued under employee plans	110	91	181	170
Common Stock repurchased	27	437	52	1,370
Dividends on Common Stock	535	503	1,070	1,008
Dividends on ESOP Common Stock	17	17	35	35
Dividends attributable to noncontrolling interest	73	64	139	112
Noncontrolling Interest, Increase from Capital Contributions	42	0	162	43
Purchase of subsidiary shares from noncontrolling interest, net	0	5	2	6
Non-controlling interest, decrease from disposition of non-controlling interest			8	0
Redeemable noncontrolling interest fair value adjustment	0	94	2	95
Other	0	7	(27)	14
Shareowners' Equity, end of period	31,364	28,442	31,364	28,442
Noncontrolling interest, end of period	1,982	1,713	1,982	1,713
Total Equity, end of period	33,346	30,155	33,346	30,155
Shareowners' Equity
Purchase of subsidiary shares from noncontrolling interest, net	0	1	1	1
Redeemable noncontrolling interest fair value adjustment	0	94	2	95
Other	2	(1)	(27)	(7)
Noncontrolling Interest
Purchase of subsidiary shares from noncontrolling interest, net	0	4	1	5
Redeemable noncontrolling interest fair value adjustment	0	0	0	0
Other	$ (2)	$ 8	0	21
Accounting Standards Update 2014-09 [Member]
Other			$ 480	$ 0

Shareowners' Equity and Nonco60

Shareowners' Equity and Noncontrolling Interest (Summary of Changes in AOCI) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017	Mar. 31, 2018	Dec. 31, 2017	Mar. 31, 2017	Dec. 31, 2016
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated Other Comprehensive Income (Loss), Net of Tax	$ (7,684)	$ (7,964)	$ (7,684)	$ (7,964)	$ (6,937)	$ (7,525)	$ (8,333)	$ (8,334)
Other comprehensive (loss) income before reclassifications, net - Foreign Currency Translation	(602)	249	(193)	395
Amounts reclassified, pretax - Foreign Currency Translation	3	0	3	0
Tax (benefit) expense reclassified - Foreign Currency Translation	(74)	0	56	0
Other comprehensive (loss) income before reclassifications, net - Pension	18	(2)	26	(2)
Amounts reclassified, pretax - Pension	88	132	176	263
Tax (benefit) expense reclassified - Pension	(26)	(50)	(49)	(98)
Other comprehensive (loss) income before reclassifications, net - AFS Securities	0	20	0	(1)
Amounts reclassified, pretax - AFS Securities	0	24	0	407
Tax (benefit) expense reclassified - AFS Securities	0	8	0	155
Other Comprehensive Income (Loss), ASU 2016-01 adoption impact on Securities Arising During Period	0	0	(5)	0
Other comprehensive (loss) income before reclassifications, net - Unrealized Hedging (Losses) Gains	(245)	50	(200)	100
Amounts reclassified, pretax - Unrealized Hedging (Losses) Gains	1	(5)	28	(10)
Tax (benefit) expense reclassified - Unrealized Hedging (Losses) Gains	60	(1)	56	(2)
Other comprehensive (loss) income before reclassifications, net	(791)	299	(362)	449
Amounts reclassified, pretax	(84)	(113)	(145)	134
Tax (benefit) expense reclassified	(40)	(43)	63	55
Other Comprehensive Income (Loss), ASU 2016-01 adoption impact on foreign currency translation Arising During Period			0
Other Comprehensive Income (Loss), ASU 2016-01 adoption impact on Defined Benefit Plan Arising During Period			0
Other Comprehensive Income (Loss), ASU 2016-01 adoption impact on Derivatives Arising During Period			0
Reclassification from OCI, current period, ASU 2016-01 adoption impact			(5)
Foreign Currency Translation
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated Other Comprehensive Income (Loss), Net of Tax	(3,085)	(3,128)	(3,085)	(3,128)	(2,444)	(2,950)	(3,359)	(3,480)
Other comprehensive (loss) income before reclassifications, net - Foreign Currency Translation	(564)	231	(188)	352
Defined Benefit Pension and Post-retirement Plans
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated Other Comprehensive Income (Loss), Net of Tax	(4,499)	(4,882)	(4,499)	(4,882)	(4,579)	(4,652)	(4,962)	(5,045)
Unrealized Gains (Losses) on Available-for-Sale Securities
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated Other Comprehensive Income (Loss), Net of Tax	0	100	0	100	0	5	96	353
Sales of significant investments in AFS securities [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Amounts reclassified, pretax - Unrealized Hedging (Losses) Gains		380
Unrealized hedging (losses) gains
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated Other Comprehensive Income (Loss), Net of Tax	$ (100)	$ (54)	$ (100)	$ (54)	$ 86	$ 72	$ (108)	$ (162)

Variable Interest Entities (Det

Variable Interest Entities (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2018	Dec. 31, 2017
Variable Interest Entity [Line Items]
Total assets	$ 5,487	$ 5,510
Total liabilities	6,552	5,687
Current Assets
Variable Interest Entity [Line Items]
Total assets	4,127	3,976
Current Liabilities
Variable Interest Entity [Line Items]
Total liabilities	4,739	3,601
Noncurrent Assets
Variable Interest Entity [Line Items]
Total assets	1,360	1,534
Noncurrent Liabilities
Variable Interest Entity [Line Items]
Total liabilities	$ 1,813	$ 2,086
IAE International Aero Engines AG
Variable Interest Entity [Line Items]
Variable Interest Entity, Methodology for Determining Whether Entity is Primary Beneficiary	Pratt & Whitney holds a net 61% interest in the IAE International Aero Engines AG (IAE) collaboration with MTU Aero Engines AG (MTU) and Japanese Aero Engines Corporation (JAEC) and a 49.5% ownership interest in IAE. IAE's business purpose is to coordinate the design, development, manufacturing and product support of the V2500 program through involvement with the collaborators.
Variable Interest Entity, Qualitative or Quantitative Information, Ownership Percentage	49.50%
International Aero Engines LLC
Variable Interest Entity [Line Items]
Variable Interest Entity, Methodology for Determining Whether Entity is Primary Beneficiary	Additionally, Pratt & Whitney, JAEC and MTU are participants in International Aero Engines, LLC (IAE LLC), whose business purpose is to coordinate the design, development, manufacturing and product support for the PW1100G-JM engine for the Airbus A320neo aircraft and the PW1400G-JM engine for the Irkut MC21 aircraft. Pratt & Whitney holds a 59% net interest and a 59% ownership interest in IAE LLC. IAE and IAE LLC retain limited equity with the primary economics of the programs passed to the participants.
Variable Interest Entity, Qualitative or Quantitative Information, Ownership Percentage	59.00%

Guarantees (Details)

Guarantees (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Product Warranty Liability [Line Items]
Balance as of January 1	$ 1,146	$ 1,199
Warranties and performance guarantees issued	233	142
Settlements made	200	120
Other	(7)	13
Balance as of June 30	$ 1,172	$ 1,234

Contingent Liabilities (Details

Contingent Liabilities (Details) $ in Millions	6 Months Ended
	Jun. 30, 2018USD ($)
U.S. Defense Contract Management Agency Claim Against Pratt & Whitney [Member]
Loss Contingencies [Line Items]
Loss Contingency Lawsuit Filing Date	December 24, 2013
Loss Contingency Allegations	As previously disclosed, in December 2013, a Divisional Administrative Contracting Officer of the United States Defense Contract Management Agency asserted a claim against Pratt & Whitney to recover overpayments of approximately $177 million plus interest (approximately $76.5 million through June 30, 2018). The claim is based on Pratt & Whitney's alleged noncompliance with cost accounting standards from January 1, 2005 to December 31, 2012, due to its method of determining the cost of collaborator parts used in the calculation of material overhead costs for government contracts.
Loss Contingency Damages Sought	$177 million
Loss Contingency Actions Taken By Defendant	On March 18, 2014, Pratt & Whitney filed an appeal to the Armed Services Board of Contract Appeals. Pratt & Whitney’s appeal is still pending and we continue to believe the government’s claim is without merit.
Estimate of interest on tax benefit	76.5
German Tax Office Against Otis [Member]
Loss Contingencies [Line Items]
Loss Contingency Lawsuit Filing Date	August 3, 2012
Loss Contingency Allegations	As previously disclosed, UTC has been involved in administrative review proceedings with the German Tax Office, which concern approximately €215 million (approximately $252 million) of tax benefits that we have claimed related to a 1998 reorganization of the corporate structure of Otis operations in Germany. Upon audit, these tax benefits were disallowed by the German Tax Office. UTC estimates interest associated with the aforementioned tax benefits is an additional approximately €118 million (approximately $138 million). On August 3, 2012, we filed suit in the local German Tax Court (Berlin-Brandenburg). In March 2016, the local German Tax Court dismissed our suit, and we appealed this decision to the German Federal Tax Court (FTC). The FTC held a hearing on our appeal on July 24, 2018, and we expect it to issue a decision during the third quarter of 2018.
Loss Contingency Damages Sought	€215 million (approximately $252 million)
Loss Contingency Actions Taken By Defendant	In 2015, UTC made tax and interest payments to German tax authorities of €275 million (approximately $300 million) in order to avoid additional interest accruals pending final resolution of this matter.
Estimate of interest on tax benefit	€118 million (approximately $138 million)
Loss Contingency, Interest Paid	€275 million (approximately $300 million)
Asbestos Matter [Member]
Loss Contingencies [Line Items]
Loss Contingency Allegations	As previously disclosed, like many other industrial companies, we and our subsidiaries have been named as defendants in lawsuits alleging personal injury as a result of exposure to asbestos integrated into certain of our products or business premises. While we have never manufactured asbestos and no longer incorporate it in any currently-manufactured products, certain of our historical products, like those of many other manufacturers, have contained components incorporating asbestos. A substantial majority of these asbestos-related claims have been dismissed without payment or were covered in full or in part by insurance or other forms of indemnity. Additional cases were litigated and settled without any insurance reimbursement. The amounts involved in asbestos related claims were not material individually or in the aggregate in any year.
Loss Contingency, Management's Assessment and Process	Our estimated total liability to resolve all pending and unasserted potential future asbestos claims through 2059 is approximately $333 million and is principally recorded in Other long-term liabilities on our Condensed Consolidated Balance Sheet as of June 30, 2018. This amount is on a pre-tax basis, not discounted, and excludes the Company’s legal fees to defend the asbestos claims (which will continue to be expensed by the Company as they are incurred). In addition, the Company has an insurance recovery receivable for probable asbestos related recoveries of approximately $146 million, which is included primarily in Other assets on our Condensed Consolidated Balance Sheet as of June 30, 2018. The amounts recorded by UTC for asbestos-related liabilities and insurance recoveries are based on currently available information and assumptions that we believe are reasonable. Our actual liabilities or insurance recoveries could be higher or lower than those recorded if actual results vary significantly from the assumptions. Key variables in these assumptions include the number and type of new claims to be filed each year, the outcomes or resolution of such claims, the average cost of resolution of each new claim, the amount of insurance available, allocation methodologies, the contractual terms with each insurer with whom we have reached settlements, the resolution of coverage issues with other excess insurance carriers with whom we have not yet achieved settlements, and the solvency risk with respect to our insurance carriers. Other factors that may affect our future liability include uncertainties surrounding the litigation process from jurisdiction to jurisdiction and from case to case, legal rulings that may be made by state and federal courts, and the passage of state or federal legislation. At least annually, the Company evaluates all of these factors and, with input from an outside actuarial expert, makes any necessary adjustments to both our estimated asbestos liabilities and insurance recoveries.
Loss Contingency, Estimate of Possible Loss	$ 333
Loss Contingency, Receivable	$ 146

Segment Financial Data (Details

Segment Financial Data (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Segment Reporting Information [Line Items]
Revenues	$ 16,705	$ 15,280	$ 31,947	$ 29,095
Operating profit	$ 2,876	$ 2,164	$ 4,804	$ 4,308
Operating profit margin	17.20%	14.20%	15.00%	14.80%
Total Segments [Member]
Segment Reporting Information [Line Items]
Revenues	$ 17,077	$ 15,553	$ 32,636	$ 29,618
Operating profit	$ 3,099	$ 2,274	$ 5,142	$ 4,539
Operating profit margin	18.10%	14.60%	15.80%	15.30%
Otis [Member]
Segment Reporting Information [Line Items]
Revenues	$ 3,344	$ 3,131	$ 6,381	$ 5,935
Operating profit	$ 488	$ 539	$ 938	$ 986
Operating profit margin	14.60%	17.20%	14.70%	16.60%
UTC Climate, Controls & Security [Member]
Segment Reporting Information [Line Items]
Revenues	$ 5,035	$ 4,712	$ 9,411	$ 8,604
Operating profit	$ 1,645	$ 837	$ 2,237	$ 1,768
Operating profit margin	32.70%	17.80%	23.80%	20.50%
Pratt & Whitney [Member]
Segment Reporting Information [Line Items]
Revenues	$ 4,736	$ 4,070	$ 9,065	$ 7,828
Operating profit	$ 397	$ 364	$ 810	$ 720
Operating profit margin	8.40%	8.90%	8.90%	9.20%
Eliminations and other [Member]
Segment Reporting Information [Line Items]
Revenues	$ (372)	$ (273)	$ (689)	$ (523)
Operating profit	(97)	(5)	(108)	(23)
General corporate expenses [Member]
Segment Reporting Information [Line Items]
Revenues	0	0	0	0
Operating profit	(126)	(105)	(230)	(208)
UTC Aerospace Systems [Member]
Segment Reporting Information [Line Items]
Revenues	3,962	3,640	7,779	7,251
Operating profit	$ 569	$ 534	$ 1,157	$ 1,065
Operating profit margin	14.40%	14.70%	14.90%	14.70%
United States [Member] | Total Segments [Member]
Segment Reporting Information [Line Items]
Revenues	$ 9,905		$ 18,620
United States [Member] | Otis [Member]
Segment Reporting Information [Line Items]
Revenues	859		1,704
United States [Member] | UTC Climate, Controls & Security [Member]
Segment Reporting Information [Line Items]
Revenues	2,618		4,713
United States [Member] | Pratt & Whitney [Member]
Segment Reporting Information [Line Items]
Revenues	3,652		6,773
United States [Member] | UTC Aerospace Systems [Member]
Segment Reporting Information [Line Items]
Revenues	2,776		5,430
Europe [Member] | Total Segments [Member]
Segment Reporting Information [Line Items]
Revenues	3,220		6,389
Europe [Member] | Otis [Member]
Segment Reporting Information [Line Items]
Revenues	1,054		2,059
Europe [Member] | UTC Climate, Controls & Security [Member]
Segment Reporting Information [Line Items]
Revenues	1,455		2,839
Europe [Member] | Pratt & Whitney [Member]
Segment Reporting Information [Line Items]
Revenues	126		299
Europe [Member] | UTC Aerospace Systems [Member]
Segment Reporting Information [Line Items]
Revenues	585		1,192
Asia Pacific [Member] | Total Segments [Member]
Segment Reporting Information [Line Items]
Revenues	2,286		4,345
Asia Pacific [Member] | Otis [Member]
Segment Reporting Information [Line Items]
Revenues	1,169		2,091
Asia Pacific [Member] | UTC Climate, Controls & Security [Member]
Segment Reporting Information [Line Items]
Revenues	720		1,405
Asia Pacific [Member] | Pratt & Whitney [Member]
Segment Reporting Information [Line Items]
Revenues	312		680
Asia Pacific [Member] | UTC Aerospace Systems [Member]
Segment Reporting Information [Line Items]
Revenues	85		169
Other [Member] | Total Segments [Member]
Segment Reporting Information [Line Items]
Revenues	1,666		3,282
Other [Member] | Otis [Member]
Segment Reporting Information [Line Items]
Revenues	262		527
Other [Member] | UTC Climate, Controls & Security [Member]
Segment Reporting Information [Line Items]
Revenues	242		454
Other [Member] | Pratt & Whitney [Member]
Segment Reporting Information [Line Items]
Revenues	646		1,313
Other [Member] | UTC Aerospace Systems [Member]
Segment Reporting Information [Line Items]
Revenues	516		988
Commercial and industrial, non aerospace [Member] | Total Segments [Member]
Segment Reporting Information [Line Items]
Revenues	8,399		15,848
Commercial and industrial, non aerospace [Member] | Otis [Member]
Segment Reporting Information [Line Items]
Revenues	3,344		6,381
Commercial and industrial, non aerospace [Member] | UTC Climate, Controls & Security [Member]
Segment Reporting Information [Line Items]
Revenues	5,035		9,411
Commercial and industrial, non aerospace [Member] | Pratt & Whitney [Member]
Segment Reporting Information [Line Items]
Revenues	5		26
Commercial and industrial, non aerospace [Member] | UTC Aerospace Systems [Member]
Segment Reporting Information [Line Items]
Revenues	15		30
Commercial Aerospace [Member] | Total Segments [Member]
Segment Reporting Information [Line Items]
Revenues	6,393		12,503
Commercial Aerospace [Member] | Otis [Member]
Segment Reporting Information [Line Items]
Revenues	0		0
Commercial Aerospace [Member] | UTC Climate, Controls & Security [Member]
Segment Reporting Information [Line Items]
Revenues	0		0
Commercial Aerospace [Member] | Pratt & Whitney [Member]
Segment Reporting Information [Line Items]
Revenues	3,369		6,568
Commercial Aerospace [Member] | UTC Aerospace Systems [Member]
Segment Reporting Information [Line Items]
Revenues	3,024		5,935
Military aerospace [Member] | Total Segments [Member]
Segment Reporting Information [Line Items]
Revenues	2,285		4,285
Military aerospace [Member] | Otis [Member]
Segment Reporting Information [Line Items]
Revenues	0		0
Military aerospace [Member] | UTC Climate, Controls & Security [Member]
Segment Reporting Information [Line Items]
Revenues	0		0
Military aerospace [Member] | Pratt & Whitney [Member]
Segment Reporting Information [Line Items]
Revenues	1,362		2,471
Military aerospace [Member] | UTC Aerospace Systems [Member]
Segment Reporting Information [Line Items]
Revenues	923		1,814
Service [Member] | Total Segments [Member]
Segment Reporting Information [Line Items]
Revenues	5,224		10,241
Service [Member] | Otis [Member]
Segment Reporting Information [Line Items]
Revenues	1,819		3,637
Service [Member] | UTC Climate, Controls & Security [Member]
Segment Reporting Information [Line Items]
Revenues	822		1,600
Service [Member] | Pratt & Whitney [Member]
Segment Reporting Information [Line Items]
Revenues	1,961		3,753
Service [Member] | UTC Aerospace Systems [Member]
Segment Reporting Information [Line Items]
Revenues	622		1,251
Product [Member] | Total Segments [Member]
Segment Reporting Information [Line Items]
Revenues	11,853		22,395
Product [Member] | Otis [Member]
Segment Reporting Information [Line Items]
Revenues	1,525		2,744
Product [Member] | UTC Climate, Controls & Security [Member]
Segment Reporting Information [Line Items]
Revenues	4,213		7,811
Product [Member] | Pratt & Whitney [Member]
Segment Reporting Information [Line Items]
Revenues	2,775		5,312
Product [Member] | UTC Aerospace Systems [Member]
Segment Reporting Information [Line Items]
Revenues	$ 3,340		$ 6,528

Accounting Pronouncements (Deta

Accounting Pronouncements (Details)	6 Months Ended
	Jun. 30, 2018
ASU 2016-02 [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
New Accounting Pronouncement or Change in Accounting Principle, Description	In February 2016, the FASB issued ASU 2016-02, Leases (Topic 842). The new standard establishes a right-of-use (ROU) model that requires a lessee to record a ROU asset and a lease liability on the balance sheet for all leases with terms longer than 12 months. Leases will be classified as either finance or operating, with classification affecting the pattern of expense recognition in the Condensed Consolidated Statement of Operations. In addition, this standard requires a lessor to classify leases as either sales-type, finance or operating. A lease will be treated as a sale if it transfers all of the risks and rewards, as well as control of the underlying asset, to the lessee. If risks and rewards are conveyed without the transfer of control, the lease is treated as financing. If the lessor doesn’t convey risks and rewards or control, the lease is treated as operating. ASU 2016-02 is effective for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years. A modified retrospective transition approach is required for lessees for capital and operating leases and lessors for sales-type, direct financing, and operating leases existing at, or entered into after, the beginning of the earliest comparative period presented in the financial statements, with certain practical expedients available. We expect that upon adoption we will recognize ROU assets and lease liabilities and that the amounts could be material. We do not expect the ASU to have a material impact on our cash flows or results of operations.
ASU 2018-02 [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
New Accounting Pronouncement or Change in Accounting Principle, Description	In February 2018, the FASB issued ASU 2018-02, Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income (Topic 220). The new standard allows companies to reclassify to retained earnings the stranded tax effects in accumulated other comprehensive income (AOCI) from the newly-enacted US Tax Cuts and Jobs Act. The new standard is effective for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years, with early adoption permitted. We are still evaluating the impact of our pending adoption of the new standard on our consolidated financial statements. However, we expect that upon adoption we will recognize a reclassification from AOCI to retained earnings that could be material. We do not expect this ASU to have a material impact on our cash flows and results of operations.