RTX (RTX) 10-Q 27 Apr 21 2021 Q1 Quarterly report Financial data

Document and Entity Information

Document and Entity Information	3 Months Ended
	Mar. 31, 2021shares
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Mar. 31, 2021
Document Transition Report	false
Entity File Number	001-00812
Entity Registrant Name	RAYTHEON TECHNOLOGIES CORPORATION
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	06-0570975
Entity Address, Address Line One	870 Winter Street,
Entity Address, City or Town	Waltham,
Entity Address, State or Province	MA
Entity Address, Postal Zip Code	02451
City Area Code	(781)
Local Phone Number	522-3000
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding	1,515,089,870
Amendment Flag	false
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	Q1
Current Fiscal Year End Date	--12-31
Entity Central Index Key	0000101829
Common Stock [Member]
Title of 12(b) Security	Common Stock ($1 par value)
Trading Symbol	RTX
Security Exchange Name	NYSE
Notes 2.150% Due 2030 [Member]
Title of 12(b) Security	2.150% Notes due 2030
Trading Symbol	RTX 30
Security Exchange Name	NYSE

Condensed Consolidated Statemen

Condensed Consolidated Statement of Operations - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Net Sales:
Net sales	$ 15,251	$ 11,360
Costs and Expenses:
Research and development	589	535
Selling, general and administrative	1,220	977
Total costs and expenses	14,346	10,084
Other income, net	108	19
Operating profit	1,013	1,295
Non-service pension benefit	(491)	(168)
Interest expense, net	346	332
Total non-operating expense (income), net	(145)	164
Income from continuing operations before income taxes	1,158	1,131
Income tax expense	345	639
Net income from continuing operations	813	492
Less: Noncontrolling interest in subsidiaries’ earnings from continuing operations	41	54
Income from continuing operations attributable to common shareowners	772	438
Discontinued operations (Note 3):
Loss from discontinued operations, before tax	(20)	(176)
Income tax (benefit) expense from discontinued operations	(1)	302
Net loss from discontinued operations	(19)	(478)
Less: Noncontrolling interest in subsidiaries’ earnings from discontinued operations	0	43
Loss from discontinued operations attributable to common shareowners	(19)	(521)
Net income (loss) attributable to common shareowners	$ 753	$ (83)
Earnings (loss) Per Share attributable to common shareowners - Basic:
Income from continuing operations	$ 0.51	$ 0.51
Loss from discontinued operations	(0.01)	(0.61)
Net income (loss) attributable to common shareowners	0.50	(0.10)
Earnings (loss) Per Share attributable to common shareowners - Diluted:
Income from continuing operations	0.51	0.50
Loss from discontinued operations	(0.01)	(0.60)
Net income (loss) attributable to common shareowners	$ 0.50	$ (0.10)
Product [Member]
Net Sales:
Net sales	$ 11,664	$ 8,165
Costs and Expenses:
Cost of Sales	9,974	6,629
Service [Member]
Net Sales:
Net sales	3,587	3,195
Costs and Expenses:
Cost of Sales	$ 2,563	$ 1,943

Condensed Consolidated Statem_2

Condensed Consolidated Statement of Comprehensive Income (Loss) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Statement of Comprehensive Income [Abstract]
Net income from continuing and discontinued operations	$ 794	$ 14
Other comprehensive income (loss), before tax:
Foreign currency translation adjustments	(176)	(1,453)
Pension and postretirement benefit plans adjustments	54	110
Change in unrealized cash flow hedging	(60)	(374)
Other comprehensive income (loss), before tax	(182)	(1,717)
Income tax (expense) benefit related to items of other comprehensive income (loss)	(5)	70
Other comprehensive income (loss), net of tax	(187)	(1,647)
Comprehensive income (loss)	607	(1,633)
Less: Comprehensive income attributable to noncontrolling interest	41	91
Comprehensive income (loss) attributable to common shareowners	$ 566	$ (1,724)

Condensed Consolidated Balance

Condensed Consolidated Balance Sheet - USD ($) $ in Millions	Mar. 31, 2021	Dec. 31, 2020
Statement of Financial Position [Abstract]
Cash and cash equivalents	$ 8,579	$ 8,802
Accounts receivable, net	10,037	9,254
Contract assets	10,238	9,931
Inventory, net	9,498	9,411
Other assets, current	4,200	5,978
Total Current Assets	42,552	43,376
Customer financing assets	3,079	3,144
Fixed assets	26,554	26,346
Accumulated depreciation	(11,812)	(11,384)
Fixed assets, net	14,742	14,962
Operating lease right-of-use assets	1,913	1,880
Goodwill	54,265	54,285
Intangible assets, net	39,999	40,539
Other assets	4,058	3,967
Total Assets	160,608	162,153
Short-term borrowings	234	247
Accounts payable	9,182	8,639
Accrued employee compensation	2,511	3,006
Other accrued liabilities	10,184	10,517
Contract liabilities	12,879	12,889
Long-term debt currently due	1,369	550
Total Current Liabilities	36,359	35,848
Long-term debt	29,935	31,026
Operating lease liabilities, non-current	1,552	1,516
Future pension and postretirement benefit obligations	9,808	10,342
Other long-term liabilities	9,612	9,537
Total Liabilities	87,266	88,269
Commitments and contingencies (Note 17)
Redeemable noncontrolling interest	34	32
Common Stock	36,997	36,930
Treasury Stock	(10,780)	(10,407)
Retained earnings	49,460	49,423
Unearned ESOP Shares	(46)	(49)
Accumulated other comprehensive loss	(3,921)	(3,734)
Total Shareowners' Equity	71,710	72,163
Noncontrolling interest	1,598	1,689
Total Equity	73,308	73,852
Total Liabilities, Redeemable Noncontrolling Interest and Equity	$ 160,608	$ 162,153

Condensed Consolidated Statem_3

Condensed Consolidated Statement of Cash Flows - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Statement of Cash Flows [Abstract]
Net income from continuing operations	$ 813	$ 492
Adjustments to reconcile net income from continuing operations to net cash flows provided by operating activities:
Depreciation and amortization	1,123	728
Deferred income tax provision	153	392
Stock compensation cost	84	63
Net periodic pension and other postretirement income	(358)	(130)
Change in:
Accounts receivable	(799)	390
Contract assets	(311)	(349)
Inventory	(113)	(395)
Other current assets	(193)	(208)
Accounts payable and accrued liabilities	538	612
Contract liabilities	(56)	(101)
Global pension contributions	(7)	(8)
Other operating activities, net	(151)	(354)
Net cash flows provided by operating activities from continuing operations	723	1,132
Investing Activities:
Capital expenditures	(387)	(325)
Investments in businesses	(6)	0
Dispositions of businesses, net of cash transferred (Note 2)	1,049	0
Increase in customer financing assets, net	(81)	(88)
Increase in collaboration intangible assets	(32)	(78)
Receipts (payments) from settlements of derivative contracts, net	49	(524)
Other investing activities, net	(10)	(25)
Net cash flows provided by (used in) investing activities from continuing operations	582	(1,040)
Financing Activities:
Distribution from discontinued operations	0	17,207
Repayment of long-term debt	(286)	(13,810)
Decrease in short-term borrowings, net	(13)	(663)
Proceeds from Common Stock issued under employee stock plans	1	6
Dividends paid on Common Stock	(705)	(614)
Repurchase of Common Stock	(375)	(47)
Net transfers to discontinued operations	(5)	(1,016)
Other financing activities, net	(161)	(23)
Net cash flows (used in) provided by financing activities from continuing operations	(1,544)	1,040
Discontinued Operations:
Net cash used in operating activities	(5)	(472)
Net cash used in investing activities	0	(241)
Net cash provided by financing activities	5	322
Net cash used in discontinued operations	0	(391)
Effect of foreign exchange rate changes on cash and cash equivalents from continuing operations	23	(19)
Effect of foreign exchange rate changes on cash and cash equivalents from discontinued operations	0	(76)
Net (decrease) increase in cash, cash equivalents and restricted cash	(216)	646
Cash, cash equivalents and restricted cash, beginning of period	8,832	4,961
Cash, cash equivalents and restricted cash within assets related to discontinued operations, beginning of period	0	2,459
Cash, cash equivalents and restricted cash, end of period	8,616	8,066
Less: Restricted cash, included in Other assets	37	48
Less: Cash, cash equivalents and restricted cash for discontinued operations	0	1,993
Cash and cash equivalents, end of period	$ 8,579	$ 6,025

Condensed Consolidated Statem_4

Condensed Consolidated Statement of Changes in Equity Statement - USD ($) shares in Thousands, $ in Millions	Total	Common Stock [Member]	Treasury Stock [Member]	Retained Earnings [Member]	Unearned ESOP Shares [Member]	AOCI Attributable to Parent [Member]	Noncontrolling Interest [Member]
Equity	$ 44,231
Stockholders' Equity Attributable to Parent		$ 23,019	$ (32,626)	$ 61,594	$ (64)	$ (10,149)
Noncontrolling interest							$ 2,457
Common Stock plans activity		81	4		3
Purchase of subsidiary shares from noncontrolling interest, net		(1)
Redeemable noncontrolling interest fair value adjustment				1
Common Stock repurchased			(43)
Net income (loss)	$ (83)			(83)
Dividends on Common Stock				(614)
Dividends on ESOP Common Stock				(17)
Stockholders' Equity, Other			0	(55)
Other comprehensive income (loss), net of tax						(1,639)
Net Income							97
Less: Redeemable noncontrolling interest net income							0
Other comprehensive income (loss), net of tax							(6)
Dividends attributable to noncontrolling interest							(58)
Capital contributions							34
Shares of Common Stock issued under employee plans, net	2,050
Shares of Common Stock repurchased	330
Dividends per share of Common Stock	$ 0.735
Equity	$ 41,935
Stockholders' Equity Attributable to Parent		23,099	(32,665)	60,826	(61)	(11,788)
Noncontrolling interest							2,524
Equity	73,852
Stockholders' Equity Attributable to Parent	72,163	36,930	(10,407)	49,423	(49)	(3,734)
Noncontrolling interest	1,689						1,689
Common Stock plans activity		67	0		3
Purchase of subsidiary shares from noncontrolling interest, net		0
Redeemable noncontrolling interest fair value adjustment				0
Common Stock repurchased			(375)
Net income (loss)	$ 753			753
Dividends on Common Stock				(705)
Dividends on ESOP Common Stock				(11)
Stockholders' Equity, Other			2	0
Other comprehensive income (loss), net of tax						(187)
Net Income							41
Less: Redeemable noncontrolling interest net income							(2)
Other comprehensive income (loss), net of tax							0
Dividends attributable to noncontrolling interest							(130)
Capital contributions							0
Shares of Common Stock issued under employee plans, net	1,043
Shares of Common Stock repurchased	5,197
Dividends per share of Common Stock	$ 0.475
Equity	$ 73,308
Stockholders' Equity Attributable to Parent	71,710	$ 36,997	$ (10,780)	$ 49,460	$ (46)	$ (3,921)
Noncontrolling interest	$ 1,598						$ 1,598

Basis of Presentation

Basis of Presentation	3 Months Ended
	Mar. 31, 2021
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation	Basis of Presentation The Condensed Consolidated Financial Statements at March 31, 2021 and for the quarters ended March 31, 2021 and 2020 are unaudited, and in the opinion of management include adjustments of a normal recurring nature 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 2020 Annual Report on Form 10-K. In addition, we reclassified certain amounts to conform to our current period presentation. Separation Transactions, Distributions and Raytheon Merger. On April 3, 2020, United Technologies Corporation (UTC) completed the separation of its business into three independent, publicly traded companies – UTC, Carrier Global Corporation (Carrier) and Otis Worldwide Corporation (Otis) (the Separation Transactions). UTC distributed all of the outstanding shares of Carrier common stock and all of the outstanding shares of Otis common stock to UTC shareowners who held shares of UTC common stock as of the close of business on March 19, 2020, the record date for the distributions (the Distributions) effective at 12:01 a.m., Eastern Time, on April 3, 2020. Immediately following the Separation Transactions and Distributions, on April 3, 2020, UTC and Raytheon Company completed their all-stock merger of equals transaction (the Raytheon Merger) , pursuant to which Raytheon Company became a wholly-owned subsidiary of UTC and UTC was renamed Raytheon Technologies Corporation. As a result of these transactions, we now operate in four principal business segments: Collins Aerospace Systems (Collins Aerospace), Pratt & Whitney, Raytheon Intelligence & Space (RIS) and Raytheon Missiles & Defense (RMD). UTC was determined to be the accounting acquirer in the Raytheon Merger, and, as a result, the financial statements of Raytheon Technologies include Raytheon Company’s financial position and results of operations for all periods subsequent to the completion of the Raytheon Merger on April 3, 2020. RIS and RMD follow a 4-4-5 fiscal calendar with a quarter end of April 4, 2021 while Collins Aerospace and Pratt & Whitney continue to use a quarter calendar end of March 31, 2021. Throughout this Quarterly Report on Form 10-Q, when we refer to the quarter ended March 31 with respect to RIS or RMD, we are referring to their April 4, 2021 fiscal quarter end. The historical results of Carrier and Otis are presented as discontinued operations and, as such, have been excluded from both continuing operations and segment results for all periods presented. Throughout this Quarterly Report on Form 10-Q, unless otherwise indicated, amounts and activity are presented on a continuing operations basis. Unless the context otherwise requires, the terms “we,” “our,” “us,” “the Company,” “Raytheon Technologies,” and “RTC” mean United Technologies Corporation and its subsidiaries when referring to periods prior to the Raytheon Merger and to the combined company, Raytheon Technologies Corporation, when referring to periods after the Raytheon Merger. Unless the context otherwise requires, the terms “Raytheon Company,” or “Raytheon” mean Raytheon Company and its subsidiaries prior to the Raytheon Merger. COVID-19 Pandemic. In 2020, the coronavirus disease 2019 (COVID-19) negatively impacted both the U.S. and global economy and our business and operations and the industries in which we operate. The continued disruption to air travel and commercial activities and the significant restrictions and limitations on businesses, particularly within the aerospace and commercial airline industries, have negatively impacted global supply, demand and distribution capabilities. In particular, the unprecedented decrease in air travel resulting from the COVID-19 pandemic has adversely affected our airline and airframer customers, and their demand for the products and services of our Collins Aerospace and Pratt & Whitney businesses. We continue to monitor these trends and are working closely with our customers to actively mitigate costs and adjust production schedules to accommodate these declines in demand. Our RIS and RMD businesses, although experiencing minor impacts, have not experienced significant business disruptions as a result of the COVID-19 pandemic. Given the significant reduction in business and leisure passenger air travel, the number of planes temporarily grounded, and continued travel restrictions that have resulted from the ongoing COVID-19 pandemic, and the resulting impacts on our customers and their business activities, we expect our future operating results, particularly those of our Collins Aerospace and Pratt & Whitney businesses, to continue to be negatively impacted when compared to pre-COVID-19 results. Our expectations regarding the COVID-19 pandemic and its potential financial impact are based on available information and assumptions that we believe are reasonable at this time; however, the actual financial impact is highly uncertain and subject to a wide range of factors and future developments. While we believe that the long-term outlook for the aerospace industry remains positive due to the fundamental drivers of air travel demand, there is significant uncertainty with respect to the point at which commercial air traffic capacity will return to and/or exceed pre-COVID-19 levels. While we have begun to see some indications that

Acquisitions, Dispositions, Goo

Acquisitions, Dispositions, Goodwill and Intangible Assets	3 Months Ended
	Mar. 31, 2021
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 Intangible Assets Business Acquisitions. As described above, on April 3, 2020, pursuant to the Agreement and Plan of Merger dated June 9, 2019, as amended (the Raytheon Merger Agreement) UTC and Raytheon Company completed their previously announced all-stock merger of equals, following the completion by UTC of the Separation Transactions and Distributions. Raytheon Company (previously New York Stock Exchange (NYSE): RTN) shares ceased trading prior to the market open on April 3, 2020, and each share of Raytheon common stock was converted in the merger into the right to receive 2.3348 shares of UTC common stock previously traded on the NYSE under the ticker symbol “UTX.” Upon closing of the Raytheon Merger, UTC’s name was changed to “Raytheon Technologies Corporation,” and its shares of common stock began trading as of April 3, 2020 on the NYSE under the ticker symbol “RTX.” Total consideration is calculated as follows: (dollars in millions) Amount Fair value of RTC common stock issued for Raytheon Company outstanding common stock and vested equity awards $ 33,067 Fair value attributable to pre-merger service for replacement equity awards 99 Total merger consideration $ 33,166 The fair value of RTC common stock issued for Raytheon Company outstanding common stock and vested equity awards is calculated as follows: (dollars and shares, in millions, except per share amounts and exchange ratio) Amount Number of Raytheon Company common shares outstanding as of April 3, 2020 277.3 Number of Raytheon Company stock awards vested as a result of the Raytheon Merger (1) 0.4 Total outstanding shares of Raytheon Company common stock and equity awards entitled to merger consideration 277.7 Exchange ratio (2) 2.3348 Shares of RTC common stock issued for Raytheon Company outstanding common stock and vested equity awards 648.4 Price per share of RTC common stock (3) $ 51.00 Fair value of RTC common stock issued for Raytheon Company outstanding common stock and vested equity awards $ 33,067 (1) Represents Raytheon Company stock awards that vested as a result of the Raytheon Merger, which is considered a “change in control” for purposes of the Raytheon 2010 Stock Plan. Certain Raytheon Company restricted stock awards and Raytheon Company restricted stock unit (RSU) awards, issued under the Raytheon 2010 Stock Plan vested on an accelerated basis as a result of the Raytheon Merger. Such vested awards were converted into the right to receive RTC common stock determined as the product of (1) the number of vested awards, and (2) the exchange ratio. (2) The exchange ratio is equal to 2.3348 shares of UTC common stock for each share of Raytheon Company common stock in accordance with the Raytheon Merger Agreement. (3) The price per share of RTC common stock is based on the RTC opening stock price as of April 3, 2020. Allocation of Consideration Transferred to Net Assets Acquired. We accounted for the Raytheon Merger under the acquisition method and are required to measure identifiable assets acquired and liabilities assumed of the acquiree (Raytheon Company) at the fair values on the closing date. During the first quarter of 2021, based on the finalization of our valuation and internal reviews, we completed the purchase price allocation which resulted in a net increase to goodwill of $61 million during the quarter. The final purchase price allocation, net of cash acquired, for the acquisition was as follows: (dollars in millions) Cash and cash equivalents $ 3,208 Accounts receivable 1,997 Inventory 705 Contract assets 6,023 Other assets, current 940 Fixed assets 4,745 Operating lease right-of-use assets 950 Intangible assets: 19,130 Customer relationships 12,900 Tradenames/trademarks 5,430 Developed technology 800 Other assets 1,218 Total identifiable assets acquired 38,916 Accounts payable 1,477 Accrued employee compensation 1,492 Other accrued liabilities 1,921 Contract liabilities 3,002 Long-term debt, including current portion 4,700 Operating lease liabilities, non-current portion 738 Future pension and postretirement benefit obligation 11,607 Other long-term liabilities 2,368 Total liabilities acquired 27,305 Total identifiable net assets 11,611 Goodwill 21,589 Redeemable noncontrolling interest (34) Total consideration transferred $ 33,166 Fair value adjustments to Raytheon Company’s identified assets and liabilities included an increase in fixed assets of $1.1 billion and an increase to future pension and postretirement benefit obligations of $3.6 billion, primarily related to remeasurement of the liability based on market conditions on the Raytheon Merger closing date. For further information, see “Note 10: Employee Benefit Plans.” In determining the fair value of identifiable assets acquired and liabilities assumed, a review was conducted for any significant contingent assets or liabilities existing as of the closing date. The assessment did not note any material contingencies related to existing legal or government action. The fair values of the customer relationship intangible assets were determined by using a discounted cash flow valuation method, which is a form of the income approach. Under this approach, the estimated future cash flows attributable to the asset are adjusted to exclude the future cash flows that can be attributed to supporting assets, such as trade names or fixed assets. Both the amount and the duration of the cash flows are considered from a market participant perspective. Our estimates of market participant future cash flows, which require significant management judgement, included forecasted revenue growth rates, remaining developmental effort, operational performance including company specific synergies, program life cycles, material and labor pricing, and other relevant customer, contractual and market factors. Where appropriate, the net cash flows are probability-adjusted to reflect the uncertainties associated with the underlying assumptions, including cancellation rates related to backlog, government demand for sole-source and recompete contracts and win rates for recompete contracts, as well as the risk profile of the net cash flows utilized in the valuation. The probability-adjusted future cash flows are then discounted to present value, using an appropriate discount rate that requires significant judgment by management. The customer relationship intangible assets are being amortized based on the pattern of economic benefits we expect to realize over the estimated economic life of the underlying programs. The fair value of the tradename intangible assets were determined utilizing the relief from royalty method which is a form of the income approach. Under this method, a royalty rate based on observed market royalties is applied to projected revenue supporting the tradename and discounted to present value, using forecasted revenue growth rate projections and a discount rate, respectively, that requires significant judgment by management. The tradename intangible assets have been determined to have an indefinite life. The developed technology intangible assets are being amortized based on the pattern of economic benefits. The intangible assets included above consist of the following: (dollars in millions) Fair Value Useful Life Acquired customer relationships $ 12,900 25 years Acquired tradenames 5,430 Indefinite Acquired developed technology 800 5 to 7 years Total identifiable intangible assets $ 19,130 We also identified customer contractual obligations on loss making programs and recorded liabilities of $222 million related to these programs based on the difference between the actual expected operating loss and a normalized operating profit. These liabilities will be liquidated based on the expected pattern of expenses incurred on these contracts. We recorded $21.6 billion of goodwill as a result of the Raytheon Merger which primarily relates to expected synergies from combining operations and the value of the existing workforce. The goodwill generated as a result of the Raytheon Merger is nondeductible for tax purposes. Merger-Related Costs. Merger-related costs have been expensed as incurred. In the quarters ended March 31, 2021 and 2020, we recorded $17 million and $29 million, respectively, of transaction and integration costs, which are included in Selling, general and administrative expenses within the Condensed Consolidated Statement of Operations. Supplemental Pro-Forma Data. Raytheon Company’s results of operations have been included in RTC’s financial statements for the period subsequent to the completion of the Raytheon Merger on April 3, 2020. The following unaudited supplemental pro-forma data presents consolidated information as if the Raytheon Merger had been completed on January 1, 2019. The pro-forma results were calculated by combining the results of Raytheon Technologies with the stand-alone results of Raytheon Company for the pre-acquisition periods, which were adjusted to account for certain costs that would have been incurred during this pre-acquisition period. The results below reflect Raytheon Technologies on a continuing operations basis, in order to more accurately represent the structure of Raytheon Technologies after completion of the Separation Transactions, the Distributions and the Raytheon Merger. Quarter Ended March 31, (dollars in millions, except per share amounts) 2020 Net sales $ 18,451 Income from continuing operations attributable to common shareowners 1,239 Basic earnings per share of common stock from continuing operations $ 0.82 Diluted earnings per share of common stock from continuing operations 0.82 The unaudited supplemental pro-forma data above includes the following significant adjustments made to account for certain costs which would have been incurred if the acquisition had been completed on January 1, 2019, as adjusted for the applicable tax impact. Quarter Ended March 31, (dollars in millions) 2020 Amortization of acquired Raytheon Company intangible assets, net (1) $ (270) Amortization of fixed asset fair value adjustment (2) (9) Utilization of contractual customer obligation (3) 8 Deferred revenue fair value adjustment (4) (4) Adjustment to non-service pension (income) expense (5) 239 RTC/Raytheon fees for advisory, legal, accounting services (6) 35 Adjustment to interest expense related to the Raytheon Merger, net (7) 9 Elimination of deferred commission amortization (8) 5 $ 13 (1) Reflects the additional amortization of the acquired Raytheon Company’s intangible assets recognized at fair value in purchase accounting and eliminates the historical Raytheon Company intangible asset amortization expense. (2) Reflects the amortization of the fixed asset fair value adjustment as of the acquisition date. (3) Reflects the additional amortization of liabilities recognized for certain acquired loss making contracts as of the acquisition date. (4) Reflects the difference between prepayments related to extended arrangements and the fair value of the assumed performance obligations as they are satisfied. (5) Represents the elimination of unamortized prior service costs and actuarial losses, as a result of fair value purchase accounting. (6) Reflects the elimination of transaction-related fees incurred by RTC and Raytheon Company in connection with the Raytheon Merger and assumes all of the fees were incurred during the first quarter of 2019. (7) Reflects the amortization of the fair market value adjustment related to Raytheon Company. (8) Reflects the elimination of amortization recognized on deferred commissions that are eliminated in purchase accounting. The unaudited supplemental pro-forma financial information does not reflect the potential realization of cost savings related to the integration of the two companies. Further, the pro-forma data should not be considered indicative of the results that would have occurred if the acquisition had been consummated on January 1, 2019, nor are they indicative of future results. Dispositions. As discussed further in “Note 3: Discontinued Operations,” on April 2, 2020, Carrier and Otis entered into a Separation and Distribution Agreement with UTC (since renamed Raytheon Technologies Corporation), pursuant to which, among other things, UTC agreed to separate into three independent, publicly traded companies – UTC, Carrier and Otis and distribute all of the outstanding common stock of Carrier and Otis to UTC shareowners who held shares of UTC common stock as of the close of business on March 19, 2020. UTC distributed 866,158,910 and 433,079,455 shares of common stock of Carrier and Otis, respectively in the Distributions. As a result of the Distributions, Carrier and Otis are now independent publicly traded companies. In October 2020, we entered into a definitive agreement to sell our Forcepoint business, which we completed on January 8, 2021, for proceeds of $1.0 billion, net of cash transferred. At December 31, 2020, the related assets of approximately $1.9 billion and liabilities of approximately $855 million were accounted for as held for sale at fair value less cost to sell; however, Forcepoint did not qualify for presentation as discontinued operations. These held for sale assets and liabilities are presented in Other assets, current and Other accrued liabilities, respectively, on our December 31, 2020 Condensed Consolidated Balance Sheet. Assets held for sale included $1.4 billion of goodwill and intangible assets. A further breakout of major classes of assets and liabilities has not been provided as the assets and liabilities held for sale are not material. We did not recognize a pre-tax gain or loss within the Condensed Consolidated Statement of Operations related to the sale of Forcepoint. The results of Forcepoint were included in Eliminations and other in our segment results. Goodwill. Changes in our goodwill balances for the quarter ended March 31, 2021 were as follows: (dollars in millions) Balance as of January 1, 2021 Acquisitions and Divestitures Foreign Currency Translation and Other Balance as of March 31, 2021 Collins Aerospace Systems $ 31,571 $ — $ (98) $ 31,473 Pratt & Whitney 1,563 — — 1,563 Raytheon Intelligence & Space (1) 9,522 30 — 9,552 Raytheon Missiles & Defense (1) 11,608 52 — 11,660 Total Segments 54,264 82 (98) 54,248 Eliminations and other 21 — (4) 17 Total $ 54,285 $ 82 $ (102) $ 54,265 (1) In connection with the previously announced January 1, 2021 reorganization of RIS and RMD, goodwill of $282 million was allocated from RMD to RIS on a relative fair value basis and is reflected in the revised balances at January 1, 2021. The Company reviews goodwill for impairment annually or more frequently if events or changes in circumstances indicate the asset might be impaired. In the first quarter of 2020, the company considered the deterioration in general economic and market conditions due to the COVID-19 pandemic to be a triggering event requiring us to reassess our goodwill and intangibles valuations as well as significant assumptions of future income from our underlying assets and potential changes in our liabilities, which resulted in no impairment to our goodwill at that time. We did not have a triggering event in the first quarter of 2021. The Company continuously monitors for events and circumstances that could negatively impact the key assumptions in determining the fair value of goodwill, including long-term revenue growth projections, profitability, discount rates, including changes to U.S. treasury rates and equity risk premiums, recent market valuations from transactions by comparable companies, volatility in the Company’s market capitalization, and general industry, market and macro-economic conditions. It is possible that future changes in such circumstances, including significant future negative developments in the COVID-19 pandemic, or future changes in the variables associated with the judgments, assumptions and estimates used in assessing the fair value of our reporting units, including the expected long-term recovery of airline travel to pre-COVID-19 levels, would require the Company to record a non-cash impairment charge. Intangible Assets. Identifiable intangible assets are comprised of the following: March 31, 2021 December 31, 2020 (dollars in millions) Gross Amount Accumulated Gross Amount Accumulated Amortized: Patents and trademarks $ 48 $ (36) $ 48 $ (35) Collaboration assets 5,047 (1,042) 5,021 (1,024) Exclusivity assets 2,581 (305) 2,541 (295) Developed technology and other 928 (364) 906 (316) Customer relationships 30,237 (5,804) 30,241 (5,262) $ 38,841 $ (7,551) $ 38,757 $ (6,932) Unamortized: Trademarks and other 8,709 — 8,714 — Total $ 47,550 $ (7,551) $ 47,471 $ (6,932) Intangible assets are tested for impairment when events occur that indicate that the net book value may not be recovered from future cash flows. Given the deterioration in general economic and market conditions primarily due to the COVID-19 pandemic, we performed an assessment of our unamortized intangible assets in the first quarter of 2020 and recorded a charge of $40 million related to the impairment of a Collins Aerospace indefinite-lived tradename intangible assets. We will continue to evaluate the impact on our customers and our business in future periods which may result in a different conclusion. Amortization of intangible assets for the quarters ended March 31, 2021 and 2020 were $596 million and $307 million, respectively. The following is the expected amortization of intangible assets for the years 2021 through 2026. (dollars in millions) Remaining 2021 2022 2023 2024 2025 2026 Amortization expense $ 1,862 $ 1,953 $ 2,078 $ 2,139 $ 2,034 $ 1,974

Discontinued Operations and Dis

Discontinued Operations and Disposal Groups	3 Months Ended
	Mar. 31, 2021
Discontinued Operations and Disposal Groups [Abstract]
Disposal Groups, Including Discontinued Operations, Disclosure	Discontinued Operations As discussed above, on April 2, 2020, Carrier and Otis entered into a Separation and Distribution Agreement with UTC (since renamed Raytheon Technologies Corporation), pursuant to which, among other things, UTC agreed to separate into three independent, publicly traded companies – UTC, Carrier and Otis and distribute all of the outstanding common stock of Carrier and Otis to UTC shareowners who held shares of UTC common stock as of the close of business on March 19, 2020. The Separation Transactions and Distributions were completed on April 3, 2020. Carrier and Otis are presented as discontinued operations and, as such, have been excluded from both continuing operations and segment results for all periods presented. Loss from discontinued operations attributable to common shareowners is as follows: Quarter Ended March 31, (dollars in millions) 2021 2020 Otis $ — $ 187 Carrier — 196 Separation related transactions (1) (19) (904) Loss from discontinued operations attributable to common shareowners $ (19) $ (521) (1) Reflects debt extinguishment costs in the quarter ended March 31, 2020 related to the Company’s paydown of debt to not exceed the maximum applicable net indebtedness under the Raytheon Merger Agreement, and unallocable transaction costs incurred by the Company primarily related to professional services costs pertaining to the Separation Transactions and the establishment of Carrier and Otis as stand-alone public companies, facility relocation costs, costs to separate information systems, costs of retention bonuses and tax charges and benefits related to separation activities. The following summarized financial information related to discontinued operations has been reclassified from Income from continuing operations attributable to common shareowners and included in Loss from discontinued operations attributable to common shareowners: Quarter Ended March 31, (dollars in millions) 2021 2020 Otis Product sales $ — $ 1,123 Service sales — 1,843 Cost of products sold — 913 Cost of services sold — 1,157 Research and development — 38 Selling, general and administrative expense — 450 Other income (expense), net — (65) Non-operating (income) expense, net — 3 Income from discontinued operations, before tax — 340 Income tax expense from discontinued operations — 116 Net income from discontinued operations — 224 Less: Noncontrolling interest in subsidiaries earnings from discontinued operations — 37 Income from discontinued operations attributable to common shareowners $ — $ 187 Carrier Product sales $ — $ 3,143 Service sales — 741 Cost of products sold — 2,239 Cost of services sold — 527 Research and development — 98 Selling, general and administrative expense — 669 Other income (expense), net — (30) Non-operating (income) expense, net — 17 Income from discontinued operations, before tax — 304 Income tax expense from discontinued operations — 102 Net income from discontinued operations — 202 Less: Noncontrolling interest in subsidiaries earnings from discontinued operations — 6 Income from discontinued operations attributable to common shareowners $ — $ 196 Separation related transactions (1) Selling, general and administrative expense $ 20 $ 154 Non-operating expense, net — 666 Loss from discontinued operations, before tax (20) (820) Income tax (benefit) expense from discontinued operations (1) 84 Net loss from discontinued operations (19) (904) Total loss from discontinued operations attributable to common shareowners $ (19) $ (521) (1) Reflects debt extinguishment costs in the quarter ended March 31, 2020 related to the Company’s paydown of debt to not exceed the maximum applicable net indebtedness under the Raytheon Merger Agreement, and unallocable transaction costs incurred by the Company primarily related to professional services costs pertaining to the Separation Transactions and the establishment of Carrier and Otis as stand-alone public companies, facility relocation costs, costs to separate information systems, costs of retention bonuses and tax charges and benefits related to separation activities. Selected financial information related to cash flows from discontinued operations is as follows: Quarter Ended March 31, (dollars in millions) 2021 2020 Net cash used in operating activities $ (5) $ (472) Net cash used in investing activities — (241) Net cash provided by financing activities 5 322

Earnings Per Share

Earnings Per Share	3 Months Ended
	Mar. 31, 2021
Earnings Per Share [Abstract]
Earnings Per Share [Text Block]	Earnings Per Share Quarter Ended March 31, (dollars in millions, except per share amounts; shares in millions) 2021 2020 Net income (loss) attributable to common shareowners: Income from continuing operations $ 772 $ 438 Loss from discontinued operations (19) (521) Net income (loss) attributable to common shareowners $ 753 $ (83) Basic weighted average number of shares outstanding 1,511.1 858.4 Stock awards and equity units (share equivalent) 3.0 7.4 Diluted weighted average number of shares outstanding 1,514.1 865.8 Earnings (Loss) Per Share attributable to common shareowners - Basic: Income from continuing operations $ 0.51 $ 0.51 Loss from discontinued operations (0.01) (0.61) Net income (loss) attributable to common shareowners $ 0.50 $ (0.10) Earnings (Loss) Per Share attributable to common shareowners - Diluted: Income from continuing operations $ 0.51 $ 0.50 Loss from discontinued operations (0.01) (0.60) Net income (loss) attributable to common shareowners $ 0.50 $ (0.10) It may not be possible to recalculate earnings per share (EPS) attributable to common shareowners by adjusting EPS from continuing operations by EPS from discontinued operations as each amount is calculated independently. The computation of diluted EPS 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. In addition, the computation of diluted EPS excludes the effect of the potential exercise of stock awards when the awards’ assumed proceeds exceed the average market price of the common shares during the period. For the quarters ended March 31, 2021 and 2020, the number of stock awards excluded from the computation was 26.7 million and 9.3 million, respectively.

Changes in Contract Estimates a

Changes in Contract Estimates at Completion	3 Months Ended
	Mar. 31, 2021
Accounting Policies [Abstract]
Changes in Contract Estimates at Completion	Changes in Contract Estimates at CompletionWe review our Estimates at Completion (EACs) on significant contracts on a periodic basis and for others, no less than annually or when a change in circumstances warrant a modification to a previous estimate. Due to the nature of the work required to be performed on many of the Company’s performance obligations, the estimation of total revenue and cost at completion is complex, subject to many variables and requires significant judgment by management on a contract by contract basis. As part of this process, management reviews information including, but not limited to, any outstanding key contract matters, progress towards completion and the related program schedule, identified risks and opportunities and the related changes in estimates of revenues and costs. The risks and opportunities relate to management’s judgment about the ability and cost to achieve the schedule, consideration of customer-directed delays or reductions in scheduled deliveries, technical requirements, customer activity levels, such as flight hours or aircraft landings, and related variable consideration. Management’s judgment related to these considerations has become increasingly more significant given the current economic environment primarily caused by the COVID-19 pandemic. Management must make assumptions and estimates regarding contract revenue and costs, including estimates of labor productivity and availability, the complexity and scope of the work to be performed, the availability and cost of materials, the length of time to complete the performance obligation, execution by our subcontractors, the availability and timing of funding from our customer, overhead cost rates, and current and past maintenance cost and frequency driven by estimated aircraft and engine utilization and estimated useful lives of components, among others. Cost estimates may also include the estimated cost of satisfying our industrial cooperation agreements, sometimes in the form of either offset obligations or in-country industrial participation (ICIP) agreements, required under certain contracts primarily within our RIS and RMD segments. These obligations may or may not be distinct depending on their nature. If cash is paid to a customer to satisfy our offset obligations it is recorded as a reduction in the transaction price. Changes in estimates of net sales, cost of sales and the related impact to operating profit on contracts recognized over time are recognized on a cumulative catch-up basis, which recognizes the cumulative effect of the profit changes on current and prior periods based on a performance obligation’s percentage of completion in the current period. A significant change in one or more of these estimates could affect the profitability of one or more of our performance obligations. Our EAC adjustments also include the establishment of loss provisions for our contracts accounted for on a percentage of completion basis. Net EAC adjustments had the following impact on our operating results: Quarter Ended March 31, (dollars in millions, except per share amounts) 2021 2020 Operating profit $ 12 $ 21 Income from continuing operations attributable to common shareowners (1) 9 16 Diluted earnings per share from continuing operations attributable to common shareholders (1) $ 0.01 $ 0.02 (1) Amounts reflect a U.S. statutory tax rate of 21%, which approximates our tax rate on our EAC adjustments. In the quarters ended March 31, 2021 and 2020, revenue was increased by $52 million and $17 million, respectively, for performance obligations satisfied (or partially satisfied) in previous periods. This primarily relates to EAC adjustments that impacted revenue. As a result of the Raytheon Merger, Raytheon Company’s contracts accounted for on a percentage of completion basis were reset to zero percent complete as of the date of completion of the Raytheon Merger, since only the unperformed portion of the contract at such date represents the obligation of the Company. For additional information related to the Raytheon Merger, see “Note 2: Acquisitions, Dispositions, Goodwill and Intangible Assets.”

Receivables, Loans, Notes Recei

Receivables, Loans, Notes Receivable, and Others	3 Months Ended
	Mar. 31, 2021
Receivables [Abstract]
Loans, Notes, Trade and Other Receivables Disclosure	Accounts Receivable, Net Accounts receivable, net consisted of the following: (dollars in millions) March 31, 2021 December 31, 2020 Accounts receivable $ 10,557 $ 9,800 Allowance for expected credit losses (520) (546) Total accounts receivable, net $ 10,037 $ 9,254 The Company enters into various factoring agreements with third-party financial institutions to sell certain of its receivables. Under these arrangements, the Company factored receivables of $1.6 billion and $2.7 billion during the quarters ended March 31, 2021 and 2020, respectively. The cash received from these arrangements is reflected as cash provided by operating activities in the Condensed Consolidated Statement of Cash Flows. In certain of these factoring arrangements, for ease of administration, the Company will collect customer payments related to the factored receivables, which it then remits to the financial institutions. At March 31, 2021 and December 31, 2020, the Company had $16 million and $10 million, respectively, that was collected on behalf of the financial institutions and recorded as restricted cash and accrued liabilities. The net cash flows relating to these collections are reported as financing activities in the Condensed Consolidated Statement of Cash Flows. The changes in the allowance for expected credit losses related to Accounts receivable were as follows: Quarter Ended March 31, (dollars in millions) 2021 2020 Balance as of January 1 $ 546 $ 254 Current period provision for expected credit losses, net of recoveries (1) (20) 47 Write-offs charged against the allowance for expected credit losses (5) (2) Other, net (2) (1) 9 Balance as of March 31, $ 520 $ 308 (1) The current provision for expected credit losses for the quarter ended March 31, 2020 includes $38 million of reserves driven by customer bankruptcies and additional reserves for credit losses primarily due to the current economic environment primarily caused by the COVID-19 pandemic.

Contract Assets and Liabilities

Contract Assets and Liabilities	3 Months Ended
	Mar. 31, 2021
Revenue from Contract with Customer [Abstract]
Revenue Recognition [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 March 31, 2021 and December 31, 2020 are as follows: (dollars in millions) March 31, 2021 December 31, 2020 Contract assets $ 10,238 $ 9,931 Contract liabilities (12,879) (12,889) Net contract liabilities $ (2,641) $ (2,958) Contract assets increased $307 million during the quarter ended March 31, 2021 primarily due to the timing of billings on certain long-term maintenance contracts. Contract liabilities were relatively consistent during the quarter ended March 31, 2021 compared to the quarter ended March 31, 2020. We recognized revenue of $1,705 million during the quarter ended March 31, 2021, related to contract liabilities as of January 1, 2021 and $1,183 million during the quarter ended March 31, 2020, related to contract liabilities as of January 1, 2020. As of March 31, 2021, our contract liabilities include approximately $440 million of advance payments received from a certain Middle East customer on contracts for which we no longer believe we will be able to execute on or obtain required regulatory approvals. These advance payments may become refundable to the customer if the contracts are ultimately terminated. Contract assets include an allowance for credit losses of $222 million and $177 million as of March 31, 2021 and December 31, 2020, respectively. Changes in the allowance for credit losses were not material for the quarters ended March 31, 2021 and 2020.

Inventory, Net

Inventory, Net	3 Months Ended
	Mar. 31, 2021
Inventory Disclosure [Abstract]
Inventory [Text Block]	Inventory, net (dollars in millions) March 31, 2021 December 31, 2020 Raw materials $ 2,995 $ 3,015 Work-in-process 3,240 2,924 Finished goods 3,263 3,472 Total inventory, net $ 9,498 $ 9,411 Raw materials, work-in-process and finished goods are net of total valuation reserves of $1,842 million and $1,788 million as of March 31, 2021 and December 31, 2020, respectively.

Borrowings and Lines of Credit

Borrowings and Lines of Credit	3 Months Ended
	Mar. 31, 2021
Debt Disclosure [Abstract]
Borrowings and Lines of Credit [Text Block]	Borrowings and Lines of Credit (dollars in millions) March 31, 2021 December 31, 2020 Commercial paper $ 160 $ 160 Other borrowings 74 87 Total short-term borrowings $ 234 $ 247 As of March 31, 2021, our maximum commercial paper borrowing limit was $5.0 billion as the commercial paper is backed by our $5.0 billion revolving credit agreement. 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 commercial paper notes outstanding have original maturities of not more than 90 days from the date of issuance. As of March 31, 2021, we had revolving credit agreements with various banks permitting aggregate borrowings of up to $7.0 billion consisting of a $5.0 billion revolving credit agreement that became available upon completion of the Raytheon Merger on April 3, 2020, and a $2.0 billion revolving credit agreement that we entered into in May 2020 and there were no borrowings outstanding under these agreements. We did not issue long-term debt during the quarter ended March 31, 2021. In preparation for and in anticipation of the Separation Transactions and Distributions, the Company, Carrier and Otis issued and the Company repaid long-term debt in the quarter ended March 31, 2020, which are included in the tables below. We had the following issuances of long-term debt during the quarter ended March 31, 2020, which is inclusive of issuances made by Carrier and Otis prior to the Distributions, the proceeds of which were primarily used by the Company to extinguish Raytheon Technologies short-term and long-term debt, and therefore, these issuances were treated as a distribution from discontinued operations within financing activities from continuing operations on our Condensed Consolidated Statement of Cash Flows: Issuance Date Description of Notes Aggregate Principal Balance (in millions) March 27, 2020 Term Loan due 2023 (Otis) (1) $ 1,000 Term Loan due 2023 (Carrier) (1) 1,750 February 27, 2020 1.923% notes due 2023 (1) 500 LIBOR plus 0.450% floating rate notes due 2023 (1) 500 2.056% notes due 2025 (1) 1,300 2.242% notes due 2025 (1) 2,000 2.293% notes due 2027 (1) 500 2.493% notes due 2027 (1) 1,250 2.565% notes due 2030 (1) 1,500 2.722% notes due 2030 (1) 2,000 3.112% notes due 2040 (1) 750 3.377% notes due 2040 (1) 1,500 3.362% notes due 2050 (1) 750 3.577% notes due 2050 (1) 2,000 (1) The debt issuances and term loan draws reflect debt incurred by Carrier and Otis. The net proceeds of these issuances were primarily utilized to extinguish Raytheon Technologies short-term and long-term debt in order to not exceed the maximum applicable net indebtedness required by the Raytheon Merger Agreement. We made the following repayments of long-term debt during the quarters ended March 31, 2021 and 2020: Repayment Date Description of Notes Aggregate Principal Balance (in millions) March 1, 2021 8.750% notes due 2021 $ 250 March 29, 2020 4.500% notes due 2020 (1)(2) 1,250 1.125% notes due 2021 (€950 million principal value) (1)(2) 1,082 1.250% notes due 2023 (€750 million principal value) (1)(2) 836 1.150% notes due 2024 (€750 million principal value) (1)(2) 841 1.875% notes due 2026 (€500 million principal value) (1)(2) 567 March 3, 2020 1.900% notes due 2020 (1)(2) 1,000 3.350% notes due 2021 (1)(2) 1,000 LIBOR plus 0.650% floating rate notes due 2021 (1)(2) 750 1.950% notes due 2021 (1)(2) 750 2.300% notes due 2022 (1)(2) 500 3.100% notes due 2022 (1)(2) 2,300 2.800% notes due 2024 (1)(2) 800 March 2, 2020 4.875% notes due 2020 (1)(2) 171 February 28, 2020 3.650% notes due 2023 (1)(2) 1,669 2.650% notes due 2026 (1)(2) 431 (1) In connection with the early repayment of outstanding principal, Raytheon Technologies recorded debt extinguishment costs of $660 million for the quarter ended March 31, 2020, which are classified as discontinued operations in our Condensed Consolidated Statement of Operations as we would not have had to redeem the debt, except for the Separation Transactions. (2) Extinguishment of Raytheon Technologies short-term and long-term debt in order to not exceed the maximum net indebtedness required by the Raytheon Merger Agreement. Long-term debt consisted of the following: (dollars in millions) March 31, 2021 December 31, 2020 8.750% notes due 2021 $ — $ 250 3.100% notes due 2021 250 250 2.800% notes due 2022 1,100 1,100 2.500% notes due 2022 (2) 1,100 1,100 3.650% notes due 2023 (1) 171 171 3.700% notes due 2023 400 400 3.200% notes due 2024 950 950 3.150% notes due 2024 (2) 300 300 3.950% notes due 2025 (1) 1,500 1,500 2.650% notes due 2026 (1) 719 719 3.125% notes due 2027 (1) 1,100 1,100 3.500% notes due 2027 1,300 1,300 7.200% notes due 2027 (2) 382 382 7.100% notes due 2027 141 141 6.700% notes due 2028 400 400 7.000% notes due 2028 (2) 185 185 4.125% notes due 2028 (1) 3,000 3,000 7.500% notes due 2029 (1) 550 550 2.150% notes due 2030 (€500 million principal value) (1) 590 612 2.250% notes due 2030 (1) 1,000 1,000 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 4.450% notes due 2038 (1) 750 750 5.700% notes due 2040 (1) 1,000 1,000 4.875% notes due 2040 (2) 600 600 4.700% notes due 2041 (2) 425 425 4.500% notes due 2042 (1) 3,500 3,500 4.800% notes due 2043 400 400 4.200% notes due 2044 (2) 300 300 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 4.350% notes due 2047 1,000 1,000 4.625% notes due 2048 (1) 1,750 1,750 3.125% notes due 2050 (1) 1,000 1,000 Other (including finance leases) 296 292 Total principal long-term debt 31,202 31,470 Other (fair market value adjustments, (discounts)/premiums, and debt issuance costs) 102 106 Total long-term debt 31,304 31,576 Less: current portion 1,369 550 Long-term debt, net of current portion $ 29,935 $ 31,026 (1) We may redeem these notes at our option pursuant to their terms. (2) Debt assumed in the Raytheon Merger. The average maturity of our long-term debt at March 31, 2021 is approximately 14 years. The average interest expense rate on our total borrowings for the quarters ended March 31, 2021 and 2020 was as follows: Quarter Ended March 31, 2021 2020 Average interest expense rate 4.1 % 3.8 %

Employee Benefit Plans

Employee Benefit Plans	3 Months Ended
	Mar. 31, 2021
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 benefit pension and postretirement benefit (PRB) plans and defined contribution plans. On April 3, 2020, UTC completed the Separation Transactions, which included the transfer of certain defined benefit plans from UTC to Carrier and Otis. The plans transferred were primarily international plans with the majority of the UTC defined benefit liability remaining with Raytheon Technologies. All service cost previously associated with Carrier and Otis was reclassified to discontinued operations. For non-service pension (income) expense and pension liabilities, generally only the portions related to the defined benefit plans transferred to Carrier and Otis as part of the Separation Transactions were reclassified to discontinued operations. Raytheon Company has both funded and unfunded domestic and foreign defined benefit pension and PRB plans. As of the merger date, the Raytheon Company plans were remeasured at fair value using accounting policies consistent with the UTC plans. The deferred pension and PRB plan losses included in Raytheon Company’s accumulated other comprehensive income (loss) as of the merger date were eliminated and are no longer subject to amortization in net periodic benefit (income) expense. Amounts prior to the merger date of April 3, 2020 do not include the Raytheon Company pension plan results. Contributions to our plans were as follows: Quarter Ended March 31, (dollars in millions) 2021 2020 U.S. qualified defined benefit plans $ — $ — International defined benefit plans 7 8 PRB plans — — Defined contribution plans 271 213 Future pension and postretirement benefit obligations on the Condensed Consolidated Balance Sheet consists of the following: (dollars in millions) March 31, 2021 December 31, 2020 Long-term pension liabilities $ 8,669 $ 9,131 Long-term PRB liabilities 1,073 1,072 Other pension and PRB related items 66 139 Total long-term pension and PRB liabilities $ 9,808 $ 10,342 The following table illustrates the components of net periodic benefit (income) expense for our defined pension and PRB plans: Pension Benefits Quarter Ended March 31, PRB Quarter Ended March 31, (dollars in millions) 2021 2020 2021 2020 Operating expense Service cost $ 131 $ 37 $ 2 $ 1 Non-operating expense Interest cost 312 253 6 6 Expected return on plan assets (868) (521) (5) (1) Amortization of prior service cost (credit) (42) 13 (1) (1) Recognized actuarial net loss (gain) 109 86 (2) (3) Net settlement and curtailment loss (gain) — — — — Non-service pension (income) expense (489) (169) (2) 1 Total net periodic benefit (income) expense $ (358) $ (132) $ — $ 2 We have set aside assets in separate trusts, which we expect to be used to pay for certain nonqualified defined benefit and defined contribution plan obligations in excess of qualified plan limits. These assets are included in Other assets, current in our Condensed Consolidated Balance Sheet. The fair value of marketable securities held in trusts consisted of the following: (dollars in millions) March 31, 2021 December 31, 2020 Marketable securities held in trusts $ 879 $ 881

Income Taxes

Income Taxes	3 Months Ended
	Mar. 31, 2021
Income Tax Disclosure [Abstract]
Income Tax Disclosure [Text Block]	Income Taxes Our effective tax rate was 29.8% and 56.5% in the quarters ended March 31, 2021 and 2020, respectively. Tax expense in the quarter ended March 31, 2021 includes tax charges of $148 million associated with the sale of the Forcepoint business. Tax expense in the quarter ended March 31, 2020 includes net deferred tax charges of $415 million resulting from the Separation Transactions, primarily related to the impairment of deferred tax assets. We conduct business globally and, as a result, Raytheon Technologies 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 Canada, China, France, Germany, India, Philippines, Poland, Saudi Arabia, Singapore, 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 2012. 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 $140 million of unrecognized tax benefits may occur within the next 12 months as a result of the revaluation of uncertain tax positions arising from the issuance of legislation, regulatory or other guidance or developments in examinations, in appeals, or in the courts, or the closure of tax statutes. Interest on unrecognized tax benefits during the quarters ended March 31, 2021 and 2020 were $143 million and $97 million, respectively. The amount of interest accrued at March 31, 2021 was $9 million. Management has determined that the distributions of Carrier and Otis on April 3, 2020, and certain related internal business separation transactions, qualified as tax-free under applicable law. In making these determinations, we applied the tax law in the relevant jurisdictions to our facts and circumstances and obtained tax rulings from the relevant taxing authorities, tax opinions, and/or other external tax advice related to the concluded tax treatment. If the completed distributions of Carrier or Otis, in each case, or certain internal business separation transactions, were to fail to qualify for tax-free treatment, the Company could be subject to significant liabilities, and there could be material adverse impacts on the Company’s business, financial condition, results of operations and cash flows in future reporting periods. The Examination Division of the Internal Revenue Service (IRS) is currently auditing Raytheon Technologies tax years 2017 and 2018 and pre-merger Raytheon Company tax periods 2017, 2018 and 2019 as well as certain refund claims of Raytheon Company for tax years 2014, 2015 and 2016 filed prior to the Raytheon Merger. The Examination Division of the IRS is also auditing pre-acquisition Rockwell Collins fiscal tax years 2016 and 2017, which is projected to close in the second half of 2021. As a result of the projected closure of the audit of Rockwell Collins fiscal tax years 2016 and 2017, it is reasonably possible that the Company may recognize non-cash gains in the range of $50 million to $100 million, primarily tax, in the second half of 2021.

Restructuring Costs

Restructuring Costs	3 Months Ended
	Mar. 31, 2021
Restructuring and Related Activities [Abstract]
Restructuring and Other Costs [Text Block]	Restructuring Costs Restructuring costs are generally expensed as incurred. All U.S. government unallowable restructuring costs related to the Raytheon Merger are recorded within Corporate expenses and other unallocated items, as these costs are not included in management’s evaluation of the segments’ performance, and as a result, there are no unallowable restructuring costs at the RIS and RMD segments. During the quarter ended March 31, 2021, we recorded net pre-tax restructuring costs totaling $43 million for new and ongoing restructuring actions. We recorded charges in the segments as follows: (dollars in millions) Quarter Ended March 31, 2021 Pratt & Whitney $ 20 Collins Aerospace Systems 18 Corporate expenses and other unallocated items 5 Total $ 43 Restructuring charges incurred during the quarter ended March 31, 2021 primarily relate to actions initiated during 2021 and 2020, and were recorded as follows: (dollars in millions) Quarter Ended March 31, 2021 Cost of sales $ 20 Selling, general and administrative 23 Total $ 43 2021 Actions. During the quarter ended March 31, 2021, we recorded net pre-tax restructuring costs of $36 million, comprised of $21 million in Cost of sales and $15 million in Selling, general and administrative expenses. The 2021 actions primarily relate to ongoing cost reduction efforts including workforce reductions and the consolidation of facilities. The following table summarizes the accrual balance and utilization for the 2021 restructuring actions for the quarter ended March 31, 2021: (dollars in millions) Severance Facility Exit and Other Costs Total Restructuring accruals at December 31, 2020 $ — $ — $ — Net pre-tax restructuring costs 24 12 36 Utilization, foreign exchange and other costs (1) (3) (4) Balance at March 31, 2021 $ 23 $ 9 $ 32 The following table summarizes expected, incurred and remaining costs for the 2021 restructuring actions by segment: (dollars in millions) Expected Costs Incurred Quarter Ended March 31, 2021 Remaining Costs at March 31, 2021 Pratt & Whitney $ 20 $ (20) $ — Collins Aerospace Systems 49 (16) 33 Corporate expenses and other unallocated items — — — Total $ 69 $ (36) $ 33 We are targeting to complete the majority of the remaining workforce and facility related cost reduction actions during 2021 and 2022. 2020 Actions. During the quarter ended March 31, 2021, we recorded $4 million of net pre-tax restructuring costs for restructuring actions initiated in 2020 comprised of $6 million in Selling, general and administrative expenses and a reversal of $2 million in Cost of sales. The 2020 actions primarily relate to severance and restructuring actions at Pratt & Whitney and Collins Aerospace in response to the impact on our operating results related to the current economic environment primarily caused by the COVID-19 pandemic, the Raytheon Merger, and ongoing cost reduction efforts including workforce reductions and consolidation of field operations. The following table summarizes the accrual balances and utilization for the 2020 restructuring actions for the quarter ended March 31, 2021: (dollars in millions) Severance Facility Exit, and Other Costs Total Restructuring accruals at December 31, 2020 $ 334 $ 6 $ 340 Net pre-tax restructuring costs 1 3 4 Utilization, foreign exchange and other costs (130) (5) (135) Balance at March 31, 2021 $ 205 $ 4 $ 209 The following table summarizes expected, incurred and remaining costs for the 2020 restructuring actions by segment: (dollars in millions) Expected Costs Incurred in 2020 Costs Incurred Quarter Ended March 31, 2021 Remaining Costs at March 31, 2021 Pratt & Whitney $ 205 $ (205) $ — $ — Collins Aerospace Systems 340 (333) 1 8 Corporate expenses and other unallocated items 237 (232) (5) — Total $ 782 $ (770) $ (4) $ 8 2019 and Prior Actions. During the quarter ended March 31, 2021, we had net pre-tax restructuring costs of $3 million for restructuring actions initiated in 2019 and prior. As of March 31, 2021, we have approximately $32 million of accrual balances remaining related to 2019 and prior actions.

Financial Instruments

Financial Instruments	3 Months Ended
	Mar. 31, 2021
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 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 aggregate notional amount of our outstanding foreign currency hedges was $11.1 billion and $11.6 billion at March 31, 2021 and December 31, 2020, respectively. The following table summarizes the fair value and presentation in the Condensed Consolidated Balance Sheet for derivative instruments as of March 31, 2021 and December 31, 2020: (dollars in millions) Balance Sheet Location March 31, 2021 December 31, 2020 Derivatives designated as hedging instruments: Foreign exchange contracts Other assets, current $ 171 $ 197 Other accrued liabilities 105 66 Derivatives not designated as hedging instruments: Foreign exchange contracts Other assets, current $ 22 $ 44 Other accrued liabilities 62 32 The effect of cash flow hedging relationships on Accumulated other comprehensive income (loss) and on the Condensed Consolidated Statement of Operations for the quarters ended March 31, 2021 and 2020 are presented in the table below. The amounts of gain or loss are attributable to foreign exchange contract activity and are generally recorded as a component of Product sales when reclassified from Accumulated other comprehensive income (loss). Quarter Ended March 31, (dollars in millions) 2021 2020 Loss recorded in Accumulated other comprehensive loss $ (46) $ (403) (Gain) loss reclassified from Accumulated other comprehensive loss into Product sales (14) 29 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. As of March 31, 2021, we have €500 million of euro-denominated long-term debt outstanding, which qualifies as a net investment hedge against our investments in European businesses, which is deemed to be effective. Assuming current market conditions continue, $22 million of pre-tax losses 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 March 31, 2021, all derivative contracts accounted for as cash flow hedges will m ature by January 2028. The effect of derivatives not designated as hedging instruments within Other income, net, on the Condensed Consolidated Statement of Operations was as follows: Quarter Ended March 31, (dollars in millions) 2021 2020 Foreign exchange contracts $ (8) $ (39)

Fair Value Measurements

Fair Value Measurements	3 Months Ended
	Mar. 31, 2021
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 basis in our Condensed Consolidated Balance Sheet as of March 31, 2021 and December 31, 2020: March 31, 2021 (dollars in millions) Total Level 1 Level 2 Level 3 Recurring fair value measurements: Marketable securities held in trusts $ 879 $ 813 $ 66 $ — Derivative assets 193 — 193 — Derivative liabilities (167) — (167) — December 31, 2020 (dollars in millions) Total Level 1 Level 2 Level 3 Recurring fair value measurements: Marketable securities held in trusts $ 881 $ 773 $ 108 $ — Derivative assets 241 — 241 — Derivative liabilities (98) — (98) — 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 March 31, 2021, 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 March 31, 2021 and December 31, 2020: March 31, 2021 December 31, 2020 (dollars in millions) Carrying Fair Carrying Fair Customer financing notes receivable $ 313 $ 303 $ 271 $ 264 Short-term borrowings (234) (234) (247) (247) Long-term debt (excluding finance leases) (31,200) (35,633) (31,512) (38,615) Long-term liabilities (28) (27) (27) (25) 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 March 31, 2021 and December 31, 2020: March 31, 2021 (dollars in millions) Total Level 1 Level 2 Level 3 Customer financing notes receivable $ 303 $ — $ 303 $ — Short-term borrowings (234) — (160) (74) Long-term debt (excluding finance leases) (35,633) — (35,559) (74) Long-term liabilities (27) — (27) — December 31, 2020 (dollars in millions) Total Level 1 Level 2 Level 3 Customer financing notes receivable $ 264 $ — $ 264 $ — Short-term borrowings (247) — (160) (87) Long-term debt (excluding finance leases) (38,615) — (38,540) (75) Long-term liabilities (25) — (25) —

Variable Interest Entities

Variable Interest Entities	3 Months Ended
	Mar. 31, 2021
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Variable Interest Entity Disclosure	Variable Interest EntitiesPratt & Whitney holds a 61% program share interest in the 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 engine 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 MC-21 aircraft. Pratt & Whitney holds a 59% program share 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) March 31, 2021 December 31, 2020 Current assets $ 7,670 $ 6,652 Noncurrent assets 853 868 Total assets $ 8,523 $ 7,520 Current liabilities $ 8,372 $ 7,365 Noncurrent liabilities 83 89 Total liabilities $ 8,455 $ 7,454

Guarantees

Guarantees	3 Months Ended
	Mar. 31, 2021
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. These instruments expire on various dates through 2024. Additional guarantees of project performance for which there is no stated value also remain outstanding. As of March 31, 2021 and December 31, 2020, the following guarantees were outstanding: March 31, 2021 December 31, 2020 (dollars in millions) Maximum Potential Payment Carrying Amount of Liability Maximum Potential Payment Carrying Amount of Liability Commercial aerospace financing arrangements $ 314 $ 6 $ 322 $ 6 Third party guarantees 379 2 386 3 We have made residual value and other guarantees related to various commercial aerospace customer financing arrangements. The estimated fair market values of the guaranteed assets equal or exceed the value of the related guarantees, net of existing reserves. Collaboration partners’ share of these financing guarantees is $144 million and $142 million at March 31, 2021 and December 31, 2020, respectively. We also have obligations arising from sales of certain businesses and assets, including those from representations and warranties and related indemnities for environmental, health and safety, tax and employment matters. The maximum potential payment related to these obligations is not a specified amount as a number of the obligations do not contain financial caps. The carrying amount of liabilities related to these obligations was $118 million and $120 million at March 31, 2021 and December 31, 2020, respectively. For additional information regarding the environmental indemnifications, see “Note 17: Commitments and Contingencies.” We accrue for costs associated with guarantees when it is probable that a liability has been incurred and the amount can be reasonably estimated. The most likely cost to be incurred is accrued based on an evaluation of currently available facts, and where no amount within a range of estimates is more likely, the minimum is accrued. We also provide service and warranty policies on our products and extend performance and operating cost guarantees beyond our normal service and warranty policies on some of our products, particularly commercial aircraft engines. In addition, we incur discretionary costs to service our products in connection with specific product performance issues. Liabilities for performance and operating cost guarantees are based upon future product performance and durability, and are largely estimated based upon historical experience. Adjustments are made to accruals as claims data and historical experience warrant. The changes in the carrying amount of service and product warranties and product performance guarantees for the quarters ended March 31, 2021 and 2020 are as follows: (dollars in millions) 2021 2020 Balance as of January 1 $ 1,057 $ 1,033 Warranties and performance guarantees issued 113 90 Settlements (69) (87) Other (1) (11) Balance as of March 31 $ 1,100 $ 1,025

Commitments and Contingencies

Commitments and Contingencies	3 Months Ended
	Mar. 31, 2021
Commitments and Contingencies Disclosure [Abstract]
Contingent Liabilities [Text Block]	Commitments and Contingencies 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, financial condition, results of operations, or liquidity. Environmental. Our operations are subject to environmental regulation by federal, state and local authorities in the United States and regulatory authorities with jurisdiction over our foreign operations. 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. At March 31, 2021 and December 31, 2020, we had $834 million and $835 million, respectively, reserved for environmental remediation. Commercial Aerospace Financing and Other Commitments. We had commercial aerospace financing commitments and other contractual commitments of approximately $13.9 billion and $13.4 billion as of March 31, 2021 and December 31, 2020, respectively, on a gross basis before reduction for our collaboration partners’ share. Aircraft financing commitments, in the form of debt or lease financing, are provided to certain commercial aerospace customers. The extent to which the financing commitments will be utilized is not currently known, since customers may be able to obtain more favorable terms from other financing sources. We may also arrange for third-party investors to assume a portion of these commitments. The majority of financing commitments are collateralized arrangements. We may also lease aircraft and subsequently sublease the aircraft to customers under long-term non-cancelable operating leases. Our financing commitments with customers are contingent upon maintenance of certain levels of financial condition by the customers. Associated risks on these commitments are mitigated due to the fact that 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 financing commitments is expected to equal the amounts funded. In addition, in connection with our 2012 agreement to acquire Rolls-Royce’s ownership and collaboration interests in IAE, additional payments are due to Rolls-Royce contingent upon each hour flown through June 2027 by the V2500-powered aircraft in service as of the acquisition date. These flight hour payments, which are considered in other contractual commitments, are being capitalized as collaboration intangible assets. Other Financing Arrangements. We have entered into standby letters of credit and surety bonds with financial institutions to meet various bid, performance, warranty, retention and advance payment obligations for us or our affiliates. We enter into these agreements to assist certain affiliates in obtaining financing on more favorable terms, making bids on contracts and performing their contractual obligations. The stated values of these letters of credit agreements and surety bonds totaled $4.4 billion as of March 31, 2021. Offset Obligations. We have entered into industrial cooperation agreements, sometimes in the form of either offset agreements or ICIP agreements, as a condition to obtaining orders for our products and services from certain customers in foreign countries. At March 31, 2021, the aggregate amount of our offset agreements, both agreed to and anticipated to be agreed to, had an outstanding notional value of approximately $11.0 billion. These agreements are designed to return economic value to the foreign country by requiring us to engage in activities supporting local defense or commercial industries, promoting a balance of trade, developing in-country technology capabilities or addressing other local development priorities. Offset agreements may be satisfied through activities that do not require a direct cash payment, including transferring technology, providing manufacturing, training and other consulting support to in-country projects, and the purchase by third parties (e.g., our vendors) of supplies from in-country vendors. These agreements may also be satisfied through our use of cash for activities such as subcontracting with local partners, purchasing supplies from in-country vendors, providing financial support for in-country projects and making investments in local ventures. Such activities may also vary by country depending upon requirements as dictated by their governments. We typically do not commit to offset agreements until orders for our products or services are definitive. The amounts ultimately applied against our offset agreements are based on negotiations with the customers and typically require cash outlays that represent only a fraction of the notional value in the offset agreements. Offset programs usually extend over several or more years and may provide for penalties in the event we fail to perform in accordance with offset requirements. Historically, we have not been required to pay any penalties of significance. Government Oversight. 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. Our contracts with the U.S. government are also subject to audits. Agencies that oversee contract performance include: the Defense Contract Audit Agency (DCAA), the Defense Contract Management Agency (DCMA), the Inspectors General of the U.S. Department of Defense (DoD) and other departments and agencies, the Government Accountability Office (GAO), the Department of Justice (DOJ), and Congressional Committees. Other areas of our business operations may also be subject to audit and investigation by these and other agencies. From time to time, agencies investigate or conduct audits to determine whether our operations are being conducted in accordance with applicable requirements. Such investigations and audits may be initiated due to a number of reasons, including as a result of a whistleblower complaint. Such investigations and audits could result in administrative, civil or criminal liabilities, including repayments, fines, treble or other damages, forfeitures, restitution, or penalties being imposed upon us, the suspension of government export licenses or the suspension or debarment from future U.S. government contracting. U.S. government investigations often take years to complete. 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 void any contracts found to be tainted by fraud. Like many defense contractors, we have received audit reports recommending the reduction of certain contract prices because, for example, cost or pricing data or cost accounting practices used to price and negotiate those contracts may not have conformed to government regulations. Some of these audit reports recommend that certain payments be repaid, delayed, or withheld, and may involve substantial amounts. We have made voluntary refunds in those cases we believe appropriate, have settled some allegations and, in some cases, continue to negotiate and/or litigate. The Company may be, and in some cases has been, required to make payments into escrow of disputed liabilities while the related litigation is pending. If the litigation is resolved in the Company’s favor, any such payments will be returned to the Company with interest. Our final allowable incurred costs for each year are also subject to audit and have, from time to time, resulted in disputes between us and the U.S. government, with litigation resulting at the Court of Federal Claims (COFC) or the Armed Services Board of Contract Appeals (ASBCA) or their related courts of appeals. In addition, the DOJ has, from time to time, convened grand juries to investigate possible irregularities by us. We also provide products and services to customers outside of the U.S., and those sales are subject to local government laws, regulations and procurement policies and practices. Our compliance with such local government regulations or any applicable U.S. government regulations (e.g., the Foreign Corrupt Practices Act (FCPA) and International Traffic in Arms Regulations (ITAR)) may also be investigated or audited. In addition, we accrue for liabilities associated with those matters that are probable and can be reasonably estimated. The most likely liability 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 accrue the minimum amount. Other than as specifically disclosed in this Form 10-Q, we do not expect these audits, investigations or disputes to have a material effect on our financial condition, results of operations or liquidity, either individually or in the aggregate. Legal Proceedings. The Company and its subsidiaries are subject to various contract pricing disputes, government investigations and litigation matters across jurisdictions, updates to certain of which are set forth below. Cost Accounting Standards Claims As previously disclosed, in April 2019, a Divisional Administrative Contracting Officer (DACO) of the United States DCMA asserted a claim against Pratt & Whitney to recover overpayments of approximately $1.73 billion plus interest ($675 million at March 31, 2021). The claim is based on Pratt & Whitney’s alleged noncompliance with Cost Accounting Standards (CAS) from January 1, 2007 to March 31, 2019, due to its method of allocating independent research and development costs to government contracts. Pratt & Whitney believes that the claim is without merit and filed an appeal to the ASBCA on June 7, 2019. As previously disclosed, in December 2013, a DCMA DACO asserted a claim against Pratt & Whitney to recover overpayments of approximately $177 million plus interest ($112 million at March 31, 2021). The claim is based on Pratt & Whitney’s alleged noncompliance with CAS 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. In 2014, Pratt & Whitney filed an appeal to the ASBCA. An evidentiary hearing was held and completed in June 2019. The parties concluded post-hearing briefing in January 2020, and now await a decision from the ASBCA. We continue to believe that the claim is without merit. In December 2018, a DCMA DACO issued a second claim against Pratt & Whitney that similarly alleges that its method of determining the cost of collaborator parts does not comply with the CAS for calendar years 2013 through 2017. This second claim demands payment of $269 million plus interest ($72 million at March 31, 2021), which we also believe is without merit and which Pratt & Whitney appealed to the ASBCA in January 2019. Thales-Raytheon Systems Matter As previously disclosed, in 2019, Raytheon Company received a subpoena from the Securities and Exchange Commission (SEC) seeking information in connection with an investigation into whether there were improper payments made by Thales-Raytheon Systems (TRS) or anyone acting on their behalf in connection with TRS or Raytheon Company contracts in certain Middle East countries since 2014. In the first quarter of 2020, the DOJ advised Raytheon Company it had opened a parallel investigation. In the third quarter of 2020, Raytheon Company received an additional subpoena from the SEC, seeking information and documents as part of its ongoing investigation. Raytheon Company maintains a rigorous anti-corruption compliance program, is cooperating fully with the SEC’s inquiry, and is examining whether there has been any conduct that is in violation of Raytheon Company policy. At this time, the Company is unable to predict the outcome of the SEC’s or DOJ’s inquiry. Based on the information available to date, however, we do not believe the results of this inquiry will have a material adverse effect on our financial condition, results of operations or liquidity. DOJ Investigation, Contract Pricing Disputes and Related Civil Litigation As previously disclosed, on October 8, 2020, the Company received a criminal subpoena from the DOJ seeking information and documents in connection with an investigation relating to financial accounting, internal controls over financial reporting, and cost reporting regarding Raytheon Company’s Missiles & Defense business (RMD) since 2009. The investigation includes potential civil defective pricing claims for three RMD contracts entered into between 2011 and 2013. As part of the same investigation, on March 24, 2021, the Company received a second criminal subpoena from the DOJ seeking documents relating to a different RMD contract entered into in 2017. We are cooperating fully with the DOJ’s ongoing investigation. Although we believe we have defenses to the potential claims, the Company has determined that there is a meaningful risk of civil liability for damages, interest and potential penalties. At this time, the Company is unable to predict either the outcome of the criminal investigation or the outcome of any potential civil claims based on facts revealed in, or related to, the investigation. Based on the information available to date, however, we do not believe the results of the investigation or of any potential civil litigation will have a material adverse effect on our financial condition, results of operations or liquidity. Four shareholder lawsuits were filed against the Company after the DOJ investigation was first disclosed. A putative securities class action lawsuit was filed in the United States District Court for the District of Arizona against the Company and certain of its executives alleging that the defendants violated federal securities laws by making material misstatements in regulatory filings regarding internal controls over financial reporting in RMD. Three shareholder derivative lawsuits were filed in the United States District Court for the District of Delaware against the former Raytheon Company Board of Directors, the Company and certain of its executives, each alleging that defendants violated federal securities laws and breached their fiduciary duties by engaging in improper accounting practices, failing to implement sufficient internal financial and compliance controls, and making a series of false and misleading statements in regulatory filings. We believe that each of these lawsuits lacks merit. Darnis, et al. As previously disclosed, August 12, 2020, several former employees of UTC or its subsidiaries filed a putative class action complaint in the United States District Court for the District of Connecticut against the Company, Otis, Carrier, the former members of the UTC Board of Directors, and the members of the Carrier and Otis Boards of Directors (Geraud Darnis, et al. v. Raytheon Technologies Corporation, et al.). The complaint challenges the method by which UTC equity awards were converted to Company, Otis, and Carrier equity awards following the separation of UTC into three independent, publicly-traded companies on April 3, 2020. The complaint claims that the defendants are liable for breach of certain equity compensation plans and for breach of fiduciary duty, and also asserts claims under certain provisions of the Employee Retirement Income Security Act of 1974 (ERISA). We believe that the Company has meritorious defenses to these claims. At this time, the Company is unable to predict the outcome, or the possible range of loss, if any, which could result from this action. Where appropriate, we have recorded loss contingency accruals for the above-referenced matters, and the amount in aggregate is not material. Other. As described in “Note 16: Guarantees,” 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, financial condition, results of operations, or liquidity.

Accumulated Other Comprehensive

Accumulated Other Comprehensive Loss	3 Months Ended
	Mar. 31, 2021
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Accumulated Other Comprehensive Income (Loss) Note [Text Block]	Accumulated Other Comprehensive Loss A summary of the changes in each component of Accumulated other comprehensive loss, net of tax for the quarters ended March 31, 2021 and 2020 is provided below: (dollars in millions) Foreign Currency Translation Defined Benefit Pension and Post-retirement Plans Unrealized Hedging (Losses) Gains Accumulated Other Comprehensive Income (Loss) Balance at December 31, 2020 $ 710 $ (4,483) $ 39 $ (3,734) Other comprehensive income (loss) before (176) (10) (46) (232) Amounts reclassified, pre-tax — 64 (14) 50 Tax benefit (expense) (5) (12) 12 (5) Balance at March 31, 2021 $ 529 $ (4,441) $ (9) $ (3,921) (dollars in millions) Foreign Currency Translation Defined Benefit Pension and Post-retirement Plans Unrealized Hedging (Losses) Gains Accumulated Other Comprehensive Income (Loss) Balance at December 31, 2019 $ (3,211) $ (6,772) $ (166) $ (10,149) Other comprehensive income (loss) before (1,445) 8 (403) (1,840) Amounts reclassified, pre-tax — 102 29 131 Tax expense (benefit) 9 (31) 92 70 Balance at March 31, 2020 $ (4,647) $ (6,693) $ (448) $ (11,788)

Segment Financial Data

Segment Financial Data	3 Months Ended
	Mar. 31, 2021
Segment Reporting [Abstract]
Segment Reporting Disclosure [Text Block]	Segment Financial Data Our operations, for the periods presented herein, are classified into four principal segments: Collins Aerospace, Pratt & Whitney, RIS and RMD. 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. The results of RIS and RMD reflect the period subsequent to the completion of the Raytheon Merger on April 3, 2020. As previously announced, effective January 1, 2021, we reorganized certain product areas of our Raytheon Intelligence & Space (RIS) and Raytheon Missiles & Defense (RMD) businesses to more efficiently leverage our capabilities. The amounts and presentation of our business segments, including intersegment activity, set forth in this Form 10-Q reflect this reorganization. The reorganization does not impact our previously reported consolidated balance sheets, statements of operations or statements of cash flows. As a result of the Raytheon Merger, we now present a FAS/CAS operating adjustment outside of segment results, which represents the difference between the service cost component of our pension and PRB expense under the Financial Accounting Standards (FAS) requirements of U.S. Generally Accepted Accounting Principles (GAAP) and our pension and PRB expense under U.S. government Cost Accounting Standards (CAS) primarily related to our RIS and RMD segments. While the ultimate liability for pension and PRB costs under FAS and CAS is similar, the pattern of cost recognition is different. We generally expect to recover the related RIS and RMD pension and PRB liabilities over time through the pricing of our products and services to the U.S. government. Because the Collins Aerospace and Pratt & Whitney segments generally record pension and PRB expense on a FAS basis, historical results were not impacted by this change in segment reporting. Total sales and operating profit by segment include inter-segment sales which are generally recorded at prices approximating those that the selling entity is able to obtain on external sales for our Collins Aerospace and Pratt & Whitney segments, and at cost-plus a specified fee, which may differ from what the selling entity would be able to obtain on sales to external customers, for our RIS and RMD segments. Results for the quarters ended March 31, 2021 and 2020 are as follows: Net Sales Operating Profit Operating Profit Margins (dollars in millions) 2021 2020 2021 2020 2021 2020 Collins Aerospace Systems $ 4,370 $ 6,438 $ 314 $ 1,246 7.2 % 19.4 % Pratt & Whitney 4,030 5,353 20 475 0.5 % 8.9 % Raytheon Intelligence & Space 3,765 — 388 — 10.3 % — % Raytheon Missiles & Defense 3,793 — 496 — 13.1 % — % Total segment 15,958 11,791 1,218 1,721 7.6 % 14.6 % Eliminations and other (1) (707) (431) (31) (25) Corporate expenses and other unallocated items (2) — — (81) (130) FAS/CAS operating adjustment — — 423 — Acquisition accounting adjustments — — (516) (271) Consolidated $ 15,251 $ 11,360 $ 1,013 $ 1,295 6.6 % 11.4 % (1) Includes the operating results of certain smaller non-reportable business segments. (2) The net expenses related to the U.S. Army’s Lower Tier Air and Missile Defense Sensor (LTAMDS) project of $58 million in the quarter ended March 31, 2021 are included in Corporate operating profit as they are not included in management’s evaluation of business segment results. No amounts were recorded in the quarter ended March 31, 2020. We disaggregate our contracts from customers by geographic location based on customer location, by customer and by sales type. Our geographic location based on customer location uses end user customer location where known or practical to determine, or in instances where the end user customer is not known or not practical to determine, we utilize “ship to” location as the customer location. In addition, for our RIS and RMD segments, we disaggregate our contracts from customers by contract type. We believe these categories best depict how the nature, amount, timing and uncertainty of our revenue and cash flows are affected by economic factors. Historical results have been recast to reflect the presentation of this disaggregation. Segment sales disaggregated by geographic region for the quarters ended March 31, 2021 and 2020 are as follows: 2021 2020 (dollars in millions) Collins Aerospace Systems Pratt & Whitney Raytheon Intelligence & Space Raytheon Missiles & Defense Other Total Collins Aerospace Systems Pratt & Whitney Raytheon Intelligence & Space Raytheon Missiles & Defense Other Total United States $ 2,242 $ 2,159 $ 2,965 $ 2,357 $ 7 $ 9,730 $ 3,144 $ 2,355 $ — $ — $ 5 $ 5,504 Asia Pacific 405 793 204 370 — 1,772 604 1,421 — — — 2,025 Middle East and North Africa 95 104 133 660 — 992 143 172 — — — 315 Europe 1,079 626 114 327 1 2,147 1,745 1,017 — — — 2,762 Canada and All Other 217 348 29 16 — 610 372 382 — — — 754 Consolidated net sales 4,038 4,030 3,445 3,730 8 15,251 6,008 5,347 — — 5 11,360 Inter-segment sales 332 — 320 63 (715) — 430 6 — — (436) — Business segment sales $ 4,370 $ 4,030 $ 3,765 $ 3,793 $ (707) $ 15,251 $ 6,438 $ 5,353 $ — $ — $ (431) $ 11,360 Segment sales disaggregated by customer for the quarters ended March 31, 2021 and 2020 are as follows: 2021 2020 (dollars in millions) Collins Aerospace Systems Pratt & Whitney Raytheon Intelligence & Space Raytheon Missiles & Defense Other Total Collins Aerospace Systems Pratt & Whitney Raytheon Intelligence & Space Raytheon Missiles & Defense Other Total U.S. government (1) $ 1,222 $ 1,262 $ 2,900 $ 2,357 $ 7 $ 7,748 $ 1,289 $ 1,239 $ — $ — $ — $ 2,528 Foreign military sales through the U.S. government 40 242 208 805 — 1,295 55 271 — — — 326 Foreign government direct commercial sales 245 139 229 567 — 1,180 225 138 — — — 363 Commercial aerospace and other commercial 2,531 2,387 108 1 1 5,028 4,439 3,699 — — 5 8,143 Consolidated net sales 4,038 4,030 3,445 3,730 8 15,251 6,008 5,347 — — 5 11,360 Inter-segment sales 332 — 320 63 (715) — 430 6 — — (436) — Business segment sales $ 4,370 $ 4,030 $ 3,765 $ 3,793 $ (707) $ 15,251 $ 6,438 $ 5,353 $ — $ — $ (431) $ 11,360 (1) Excludes foreign military sales through the U.S. government. Segment sales disaggregated by sales type for the quarters ended March 31, 2021 and 2020 are as follows: 2021 2020 (dollars in millions) Collins Aerospace Systems Pratt & Whitney Raytheon Intelligence & Space Raytheon Missiles & Defense Other Total Collins Aerospace Systems Pratt & Whitney Raytheon Intelligence & Space Raytheon Missiles & Defense Other Total Product $ 3,182 $ 2,423 $ 2,676 $ 3,375 $ 8 $ 11,664 $ 4,905 $ 3,255 $ — $ — $ 5 $ 8,165 Service 856 1,607 769 355 — 3,587 1,103 2,092 — — — 3,195 Consolidated net sales 4,038 4,030 3,445 3,730 8 15,251 6,008 5,347 — — 5 11,360 Inter-segment sales 332 — 320 63 (715) — 430 6 — — (436) — Business segment sales $ 4,370 $ 4,030 $ 3,765 $ 3,793 $ (707) $ 15,251 $ 6,438 $ 5,353 $ — $ — $ (431) $ 11,360 RIS and RMD segment sales disaggregated by contract type for the quarter ended March 31, 2021 are as follows: 2021 (dollars in millions) Raytheon Intelligence & Space Raytheon Missiles & Defense Fixed-price $ 1,471 $ 2,251 Cost-type 1,974 1,479 Consolidated net sales $ 3,445 $ 3,730

Remaining Performance Obligatio

Remaining Performance Obligations (RPO)	3 Months Ended
	Mar. 31, 2021
Revenue from Contract with Customer [Abstract]
Remaining Performance Obligation [Text Block]	Remaining Performance Obligations (RPO)RPO represent the aggregate amount of total contract transaction price that is unsatisfied or partially unsatisfied. Total RPO was $147.4 billion and $150.1 billion as of March 31, 2021 and December 31, 2020, respectively. Of the total RPO as of March 31, 2021, we expect approximately 30% will be recognized as sales over the next 12 months. This percentage of RPO to be recognized as sales over the next 12 months depends on future developments, which are highly uncertain and cannot be predicted, including new information which may emerge concerning the scope, severity and duration of the COVID-19 pandemic, as well as any worsening of the pandemic, the effect of mutating strains and whether additional outbreaks of the pandemic will continue to occur, actions to contain the pandemic’s spread or treat its impact, continued availability of vaccines, and their distribution, acceptance and efficacy, and governmental, business and individual personal actions taken in response to the pandemic, which may result in customer delays or order cancellations.

Accounting Pronouncements

Accounting Pronouncements	3 Months Ended
	Mar. 31, 2021
Accounting Standards Update and Change in Accounting Principle [Abstract]
Accounting Pronouncements	Accounting Pronouncements In June 2016, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update (ASU) 2016-13, Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments. This ASU and its related amendments (collectively, the Credit Loss Standard) modifies the impairment model to utilize an expected loss methodology in place of the incurred loss methodology for financial instruments, including trade receivables, contract assets and off-balance sheet credit exposures. The Credit Loss Standard requires consideration of a broader range of information to estimate expected credit losses, including historical information, current economic conditions and a reasonable forecast period. This ASU requires that the statement of operations reflect estimates of expected credit losses for newly recognized financial assets as well as changes in the estimate of expected credit losses that have taken place during the period, which may result in earlier recognition of certain losses. We adopted this standard effective January 1, 2020 utilizing a modified retrospective approach. A cumulative-effect non-cash adjustment to retained earnings as of January 1, 2020 was recorded in the amount of $59 million. The adoption of this standard did not have a material impact on the Company’s Condensed Consolidated Financial Statements. In December 2019, the FASB issued ASU 2019-12, Income Taxes (Topic 740): Simplifying the Accounting for Income Taxes. The amendments in this update remove certain exceptions of Topic 740 including the exception to the incremental approach for intraperiod tax allocation when there is a loss from continuing operations and income from other items; the exception to the requirement to recognize a deferred tax liability for equity method investments when a foreign subsidiary becomes an equity method investment; the exception to the ability to reverse a deferred tax liability for a foreign subsidiary when a foreign equity method investment becomes a subsidiary; and the exception to the general methodology for calculating income taxes in an interim period when a year-to-date loss exceeds the anticipated loss for the year. There are also additional areas of guidance related to franchise and other taxes partially based on income and the interim recognition of enactment of tax laws and rate changes. We adopted the new standard effective January 1, 2021. The adoption of this standard did not, and is not expected to, have an impact on the Company’s Condensed Consolidated Financial Statements. Other new pronouncements issued but not effective until after March 31, 2021 are not expected to have a material impact on our financial condition, results of operations or liquidity.

Acquisitions, Dispositions, G_2

Acquisitions, Dispositions, Goodwill and Intangible Assets (Tables)	3 Months Ended
	Mar. 31, 2021
Business Acquisition, Pro Forma Information, Nonrecurring Adjustment [Line Items]
Schedule of Goodwill [Table Text Block]	Changes in our goodwill balances for the quarter ended March 31, 2021 were as follows: (dollars in millions) Balance as of January 1, 2021 Acquisitions and Divestitures Foreign Currency Translation and Other Balance as of March 31, 2021 Collins Aerospace Systems $ 31,571 $ — $ (98) $ 31,473 Pratt & Whitney 1,563 — — 1,563 Raytheon Intelligence & Space (1) 9,522 30 — 9,552 Raytheon Missiles & Defense (1) 11,608 52 — 11,660 Total Segments 54,264 82 (98) 54,248 Eliminations and other 21 — (4) 17 Total $ 54,285 $ 82 $ (102) $ 54,265 (1) In connection with the previously announced January 1, 2021 reorganization of RIS and RMD, goodwill of $282 million was allocated from RMD to RIS on a relative fair value basis and is reflected in the revised balances at January 1, 2021.
Schedule of Indefinite-Lived Intangible Assets [Table Text Block]	Identifiable intangible assets are comprised of the following: March 31, 2021 December 31, 2020 (dollars in millions) Gross Amount Accumulated Gross Amount Accumulated Amortized: Patents and trademarks $ 48 $ (36) $ 48 $ (35) Collaboration assets 5,047 (1,042) 5,021 (1,024) Exclusivity assets 2,581 (305) 2,541 (295) Developed technology and other 928 (364) 906 (316) Customer relationships 30,237 (5,804) 30,241 (5,262) $ 38,841 $ (7,551) $ 38,757 $ (6,932) Unamortized: Trademarks and other 8,709 — 8,714 — Total $ 47,550 $ (7,551) $ 47,471 $ (6,932)
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block]	The following is the expected amortization of intangible assets for the years 2021 through 2026. (dollars in millions) Remaining 2021 2022 2023 2024 2025 2026 Amortization expense $ 1,862 $ 1,953 $ 2,078 $ 2,139 $ 2,034 $ 1,974
Raytheon Company [Member]
Business Acquisition, Pro Forma Information, Nonrecurring Adjustment [Line Items]
Schedule of Noncash or Part Noncash Acquisitions	Total consideration is calculated as follows: (dollars in millions) Amount Fair value of RTC common stock issued for Raytheon Company outstanding common stock and vested equity awards $ 33,067 Fair value attributable to pre-merger service for replacement equity awards 99 Total merger consideration $ 33,166 The fair value of RTC common stock issued for Raytheon Company outstanding common stock and vested equity awards is calculated as follows: (dollars and shares, in millions, except per share amounts and exchange ratio) Amount Number of Raytheon Company common shares outstanding as of April 3, 2020 277.3 Number of Raytheon Company stock awards vested as a result of the Raytheon Merger (1) 0.4 Total outstanding shares of Raytheon Company common stock and equity awards entitled to merger consideration 277.7 Exchange ratio (2) 2.3348 Shares of RTC common stock issued for Raytheon Company outstanding common stock and vested equity awards 648.4 Price per share of RTC common stock (3) $ 51.00 Fair value of RTC common stock issued for Raytheon Company outstanding common stock and vested equity awards $ 33,067 (1) Represents Raytheon Company stock awards that vested as a result of the Raytheon Merger, which is considered a “change in control” for purposes of the Raytheon 2010 Stock Plan. Certain Raytheon Company restricted stock awards and Raytheon Company restricted stock unit (RSU) awards, issued under the Raytheon 2010 Stock Plan vested on an accelerated basis as a result of the Raytheon Merger. Such vested awards were converted into the right to receive RTC common stock determined as the product of (1) the number of vested awards, and (2) the exchange ratio. (2) The exchange ratio is equal to 2.3348 shares of UTC common stock for each share of Raytheon Company common stock in accordance with the Raytheon Merger Agreement. (3) The price per share of RTC common stock is based on the RTC opening stock price as of April 3, 2020.
Schedule of Recognized Identified Assets Acquired and Liabilities Assumed	The final purchase price allocation, net of cash acquired, for the acquisition was as follows: (dollars in millions) Cash and cash equivalents $ 3,208 Accounts receivable 1,997 Inventory 705 Contract assets 6,023 Other assets, current 940 Fixed assets 4,745 Operating lease right-of-use assets 950 Intangible assets: 19,130 Customer relationships 12,900 Tradenames/trademarks 5,430 Developed technology 800 Other assets 1,218 Total identifiable assets acquired 38,916 Accounts payable 1,477 Accrued employee compensation 1,492 Other accrued liabilities 1,921 Contract liabilities 3,002 Long-term debt, including current portion 4,700 Operating lease liabilities, non-current portion 738 Future pension and postretirement benefit obligation 11,607 Other long-term liabilities 2,368 Total liabilities acquired 27,305 Total identifiable net assets 11,611 Goodwill 21,589 Redeemable noncontrolling interest (34) Total consideration transferred $ 33,166
Finite-Lived and Indefinite-Lived Intangible Assets Acquired as Part of Business Combination	The intangible assets included above consist of the following: (dollars in millions) Fair Value Useful Life Acquired customer relationships $ 12,900 25 years Acquired tradenames 5,430 Indefinite Acquired developed technology 800 5 to 7 years Total identifiable intangible assets $ 19,130
Business Acquisition, Pro Forma Information, Nonrecurring Adjustments [Table Text Block]	The results below reflect Raytheon Technologies on a continuing operations basis, in order to more accurately represent the structure of Raytheon Technologies after completion of the Separation Transactions, the Distributions and the Raytheon Merger. Quarter Ended March 31, (dollars in millions, except per share amounts) 2020 Net sales $ 18,451 Income from continuing operations attributable to common shareowners 1,239 Basic earnings per share of common stock from continuing operations $ 0.82 Diluted earnings per share of common stock from continuing operations 0.82 The unaudited supplemental pro-forma data above includes the following significant adjustments made to account for certain costs which would have been incurred if the acquisition had been completed on January 1, 2019, as adjusted for the applicable tax impact. Quarter Ended March 31, (dollars in millions) 2020 Amortization of acquired Raytheon Company intangible assets, net (1) $ (270) Amortization of fixed asset fair value adjustment (2) (9) Utilization of contractual customer obligation (3) 8 Deferred revenue fair value adjustment (4) (4) Adjustment to non-service pension (income) expense (5) 239 RTC/Raytheon fees for advisory, legal, accounting services (6) 35 Adjustment to interest expense related to the Raytheon Merger, net (7) 9 Elimination of deferred commission amortization (8) 5 $ 13 (1) Reflects the additional amortization of the acquired Raytheon Company’s intangible assets recognized at fair value in purchase accounting and eliminates the historical Raytheon Company intangible asset amortization expense. (2) Reflects the amortization of the fixed asset fair value adjustment as of the acquisition date. (3) Reflects the additional amortization of liabilities recognized for certain acquired loss making contracts as of the acquisition date. (4) Reflects the difference between prepayments related to extended arrangements and the fair value of the assumed performance obligations as they are satisfied. (5) Represents the elimination of unamortized prior service costs and actuarial losses, as a result of fair value purchase accounting. (6) Reflects the elimination of transaction-related fees incurred by RTC and Raytheon Company in connection with the Raytheon Merger and assumes all of the fees were incurred during the first quarter of 2019. (7) Reflects the amortization of the fair market value adjustment related to Raytheon Company. (8) Reflects the elimination of amortization recognized on deferred commissions that are eliminated in purchase accounting.

Discontinued Operations and D_2

Discontinued Operations and Disposal Groups (Tables)	3 Months Ended
	Mar. 31, 2021
Discontinued Operations and Disposal Groups [Abstract]
Schedule of income (loss) from discontinued operations	Carrier and Otis are presented as discontinued operations and, as such, have been excluded from both continuing operations and segment results for all periods presented. Loss from discontinued operations attributable to common shareowners is as follows: Quarter Ended March 31, (dollars in millions) 2021 2020 Otis $ — $ 187 Carrier — 196 Separation related transactions (1) (19) (904) Loss from discontinued operations attributable to common shareowners $ (19) $ (521) (1) Reflects debt extinguishment costs in the quarter ended March 31, 2020 related to the Company’s paydown of debt to not exceed the maximum applicable net indebtedness under the Raytheon Merger Agreement, and unallocable transaction costs incurred by the Company primarily related to professional services costs pertaining to the Separation Transactions and the establishment of Carrier and Otis as stand-alone public companies, facility relocation costs, costs to separate information systems, costs of retention bonuses and tax charges and benefits related to separation activities. The following summarized financial information related to discontinued operations has been reclassified from Income from continuing operations attributable to common shareowners and included in Loss from discontinued operations attributable to common shareowners: Quarter Ended March 31, (dollars in millions) 2021 2020 Otis Product sales $ — $ 1,123 Service sales — 1,843 Cost of products sold — 913 Cost of services sold — 1,157 Research and development — 38 Selling, general and administrative expense — 450 Other income (expense), net — (65) Non-operating (income) expense, net — 3 Income from discontinued operations, before tax — 340 Income tax expense from discontinued operations — 116 Net income from discontinued operations — 224 Less: Noncontrolling interest in subsidiaries earnings from discontinued operations — 37 Income from discontinued operations attributable to common shareowners $ — $ 187 Carrier Product sales $ — $ 3,143 Service sales — 741 Cost of products sold — 2,239 Cost of services sold — 527 Research and development — 98 Selling, general and administrative expense — 669 Other income (expense), net — (30) Non-operating (income) expense, net — 17 Income from discontinued operations, before tax — 304 Income tax expense from discontinued operations — 102 Net income from discontinued operations — 202 Less: Noncontrolling interest in subsidiaries earnings from discontinued operations — 6 Income from discontinued operations attributable to common shareowners $ — $ 196 Separation related transactions (1) Selling, general and administrative expense $ 20 $ 154 Non-operating expense, net — 666 Loss from discontinued operations, before tax (20) (820) Income tax (benefit) expense from discontinued operations (1) 84 Net loss from discontinued operations (19) (904) Total loss from discontinued operations attributable to common shareowners $ (19) $ (521) (1) Reflects debt extinguishment costs in the quarter ended March 31, 2020 related to the Company’s paydown of debt to not exceed the maximum applicable net indebtedness under the Raytheon Merger Agreement, and unallocable transaction costs incurred by the Company primarily related to professional services costs pertaining to the Separation Transactions and the establishment of Carrier and Otis as stand-alone public companies, facility relocation costs, costs to separate information systems, costs of retention bonuses and tax charges and benefits related to separation activities.
Schedule of cash flows from discontinued operations	Selected financial information related to cash flows from discontinued operations is as follows: Quarter Ended March 31, (dollars in millions) 2021 2020 Net cash used in operating activities $ (5) $ (472) Net cash used in investing activities — (241) Net cash provided by financing activities 5 322

Earnings Per Share (Tables)

Earnings Per Share (Tables)	3 Months Ended
	Mar. 31, 2021
Earnings Per Share [Abstract]
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]	Quarter Ended March 31, (dollars in millions, except per share amounts; shares in millions) 2021 2020 Net income (loss) attributable to common shareowners: Income from continuing operations $ 772 $ 438 Loss from discontinued operations (19) (521) Net income (loss) attributable to common shareowners $ 753 $ (83) Basic weighted average number of shares outstanding 1,511.1 858.4 Stock awards and equity units (share equivalent) 3.0 7.4 Diluted weighted average number of shares outstanding 1,514.1 865.8 Earnings (Loss) Per Share attributable to common shareowners - Basic: Income from continuing operations $ 0.51 $ 0.51 Loss from discontinued operations (0.01) (0.61) Net income (loss) attributable to common shareowners $ 0.50 $ (0.10) Earnings (Loss) Per Share attributable to common shareowners - Diluted: Income from continuing operations $ 0.51 $ 0.50 Loss from discontinued operations (0.01) (0.60) Net income (loss) attributable to common shareowners $ 0.50 $ (0.10)

Changes in Contract Estimates_2

Changes in Contract Estimates at Completion (Tables)	3 Months Ended
	Mar. 31, 2021
Accounting Policies [Abstract]
Schedule of Change in Accounting Estimate	Net EAC adjustments had the following impact on our operating results: Quarter Ended March 31, (dollars in millions, except per share amounts) 2021 2020 Operating profit $ 12 $ 21 Income from continuing operations attributable to common shareowners (1) 9 16 Diluted earnings per share from continuing operations attributable to common shareholders (1) $ 0.01 $ 0.02 (1) Amounts reflect a U.S. statutory tax rate of 21%, which approximates our tax rate on our EAC adjustments.

Receivables, Loans, Notes Rec_2

Receivables, Loans, Notes Receivable, and Others (Tables)	3 Months Ended
	Mar. 31, 2021
Receivables [Abstract]
Schedule of Receivables, Net	Accounts receivable, net consisted of the following: (dollars in millions) March 31, 2021 December 31, 2020 Accounts receivable $ 10,557 $ 9,800 Allowance for expected credit losses (520) (546) Total accounts receivable, net $ 10,037 $ 9,254
Accounts Receivable, Allowance for Credit Loss	The changes in the allowance for expected credit losses related to Accounts receivable were as follows: Quarter Ended March 31, (dollars in millions) 2021 2020 Balance as of January 1 $ 546 $ 254 Current period provision for expected credit losses, net of recoveries (1) (20) 47 Write-offs charged against the allowance for expected credit losses (5) (2) Other, net (2) (1) 9 Balance as of March 31, $ 520 $ 308 (1) The current provision for expected credit losses for the quarter ended March 31, 2020 includes $38 million of reserves driven by customer bankruptcies and additional reserves for credit losses primarily due to the current economic environment primarily caused by the COVID-19 pandemic.

Contract Assets and Liabiliti_2

Contract Assets and Liabilities (Tables)	3 Months Ended
	Mar. 31, 2021
Revenue from Contract with Customer [Abstract]
Contract with Customer, Asset and Liability [Table Text Block]	Total contract assets and contract liabilities as of March 31, 2021 and December 31, 2020 are as follows: (dollars in millions) March 31, 2021 December 31, 2020 Contract assets $ 10,238 $ 9,931 Contract liabilities (12,879) (12,889) Net contract liabilities $ (2,641) $ (2,958)

Inventory, Net (Tables)

Inventory, Net (Tables)	3 Months Ended
	Mar. 31, 2021
Inventory Disclosure [Abstract]
Schedule of Inventory, Current [Table Text Block]	(dollars in millions) March 31, 2021 December 31, 2020 Raw materials $ 2,995 $ 3,015 Work-in-process 3,240 2,924 Finished goods 3,263 3,472 Total inventory, net $ 9,498 $ 9,411

Borrowings and Lines of Credit

Borrowings and Lines of Credit (Tables)	3 Months Ended
	Mar. 31, 2021
Debt Disclosure [Abstract]
Schedule of Short-Term Debt [Table Text Block]	(dollars in millions) March 31, 2021 December 31, 2020 Commercial paper $ 160 $ 160 Other borrowings 74 87 Total short-term borrowings $ 234 $ 247
Schedule of Long Term Debt Issuances	We had the following issuances of long-term debt during the quarter ended March 31, 2020, which is inclusive of issuances made by Carrier and Otis prior to the Distributions, the proceeds of which were primarily used by the Company to extinguish Raytheon Technologies short-term and long-term debt, and therefore, these issuances were treated as a distribution from discontinued operations within financing activities from continuing operations on our Condensed Consolidated Statement of Cash Flows: Issuance Date Description of Notes Aggregate Principal Balance (in millions) March 27, 2020 Term Loan due 2023 (Otis) (1) $ 1,000 Term Loan due 2023 (Carrier) (1) 1,750 February 27, 2020 1.923% notes due 2023 (1) 500 LIBOR plus 0.450% floating rate notes due 2023 (1) 500 2.056% notes due 2025 (1) 1,300 2.242% notes due 2025 (1) 2,000 2.293% notes due 2027 (1) 500 2.493% notes due 2027 (1) 1,250 2.565% notes due 2030 (1) 1,500 2.722% notes due 2030 (1) 2,000 3.112% notes due 2040 (1) 750 3.377% notes due 2040 (1) 1,500 3.362% notes due 2050 (1) 750 3.577% notes due 2050 (1) 2,000 (1) The debt issuances and term loan draws reflect debt incurred by Carrier and Otis. The net proceeds of these issuances were primarily utilized to extinguish Raytheon Technologies short-term and long-term debt in order to not exceed the maximum applicable net indebtedness required by the Raytheon Merger Agreement.
Schedule of Long Term Debt Repayments	We made the following repayments of long-term debt during the quarters ended March 31, 2021 and 2020: Repayment Date Description of Notes Aggregate Principal Balance (in millions) March 1, 2021 8.750% notes due 2021 $ 250 March 29, 2020 4.500% notes due 2020 (1)(2) 1,250 1.125% notes due 2021 (€950 million principal value) (1)(2) 1,082 1.250% notes due 2023 (€750 million principal value) (1)(2) 836 1.150% notes due 2024 (€750 million principal value) (1)(2) 841 1.875% notes due 2026 (€500 million principal value) (1)(2) 567 March 3, 2020 1.900% notes due 2020 (1)(2) 1,000 3.350% notes due 2021 (1)(2) 1,000 LIBOR plus 0.650% floating rate notes due 2021 (1)(2) 750 1.950% notes due 2021 (1)(2) 750 2.300% notes due 2022 (1)(2) 500 3.100% notes due 2022 (1)(2) 2,300 2.800% notes due 2024 (1)(2) 800 March 2, 2020 4.875% notes due 2020 (1)(2) 171 February 28, 2020 3.650% notes due 2023 (1)(2) 1,669 2.650% notes due 2026 (1)(2) 431 (1) In connection with the early repayment of outstanding principal, Raytheon Technologies recorded debt extinguishment costs of $660 million for the quarter ended March 31, 2020, which are classified as discontinued operations in our Condensed Consolidated Statement of Operations as we would not have had to redeem the debt, except for the Separation Transactions. (2) Extinguishment of Raytheon Technologies short-term and long-term debt in order to not exceed the maximum net indebtedness required by the Raytheon Merger Agreement.
Schedule of Long-term Debt [Table Text Block]	Long-term debt consisted of the following: (dollars in millions) March 31, 2021 December 31, 2020 8.750% notes due 2021 $ — $ 250 3.100% notes due 2021 250 250 2.800% notes due 2022 1,100 1,100 2.500% notes due 2022 (2) 1,100 1,100 3.650% notes due 2023 (1) 171 171 3.700% notes due 2023 400 400 3.200% notes due 2024 950 950 3.150% notes due 2024 (2) 300 300 3.950% notes due 2025 (1) 1,500 1,500 2.650% notes due 2026 (1) 719 719 3.125% notes due 2027 (1) 1,100 1,100 3.500% notes due 2027 1,300 1,300 7.200% notes due 2027 (2) 382 382 7.100% notes due 2027 141 141 6.700% notes due 2028 400 400 7.000% notes due 2028 (2) 185 185 4.125% notes due 2028 (1) 3,000 3,000 7.500% notes due 2029 (1) 550 550 2.150% notes due 2030 (€500 million principal value) (1) 590 612 2.250% notes due 2030 (1) 1,000 1,000 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 4.450% notes due 2038 (1) 750 750 5.700% notes due 2040 (1) 1,000 1,000 4.875% notes due 2040 (2) 600 600 4.700% notes due 2041 (2) 425 425 4.500% notes due 2042 (1) 3,500 3,500 4.800% notes due 2043 400 400 4.200% notes due 2044 (2) 300 300 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 4.350% notes due 2047 1,000 1,000 4.625% notes due 2048 (1) 1,750 1,750 3.125% notes due 2050 (1) 1,000 1,000 Other (including finance leases) 296 292 Total principal long-term debt 31,202 31,470 Other (fair market value adjustments, (discounts)/premiums, and debt issuance costs) 102 106 Total long-term debt 31,304 31,576 Less: current portion 1,369 550 Long-term debt, net of current portion $ 29,935 $ 31,026 (1) We may redeem these notes at our option pursuant to their terms. (2) Debt assumed in the Raytheon Merger.
Schedule of Weighted average interest rates [Table Text Block]	The average interest expense rate on our total borrowings for the quarters ended March 31, 2021 and 2020 was as follows: Quarter Ended March 31, 2021 2020 Average interest expense rate 4.1 % 3.8 %

Employee Benefit Plans (Tables)

Employee Benefit Plans (Tables)	3 Months Ended
	Mar. 31, 2021
Retirement Benefits [Abstract]
Schedule of contributions to plans	Contributions to our plans were as follows: Quarter Ended March 31, (dollars in millions) 2021 2020 U.S. qualified defined benefit plans $ — $ — International defined benefit plans 7 8 PRB plans — — Defined contribution plans 271 213
Schedule of Amounts Recognized in Balance Sheet	Future pension and postretirement benefit obligations on the Condensed Consolidated Balance Sheet consists of the following: (dollars in millions) March 31, 2021 December 31, 2020 Long-term pension liabilities $ 8,669 $ 9,131 Long-term PRB liabilities 1,073 1,072 Other pension and PRB related items 66 139 Total long-term pension and PRB liabilities $ 9,808 $ 10,342
Schedule of Net Benefit Costs	The following table illustrates the components of net periodic benefit (income) expense for our defined pension and PRB plans: Pension Benefits Quarter Ended March 31, PRB Quarter Ended March 31, (dollars in millions) 2021 2020 2021 2020 Operating expense Service cost $ 131 $ 37 $ 2 $ 1 Non-operating expense Interest cost 312 253 6 6 Expected return on plan assets (868) (521) (5) (1) Amortization of prior service cost (credit) (42) 13 (1) (1) Recognized actuarial net loss (gain) 109 86 (2) (3) Net settlement and curtailment loss (gain) — — — — Non-service pension (income) expense (489) (169) (2) 1 Total net periodic benefit (income) expense $ (358) $ (132) $ — $ 2
Marketable Securities	The fair value of marketable securities held in trusts consisted of the following: (dollars in millions) March 31, 2021 December 31, 2020 Marketable securities held in trusts $ 879 $ 881

Restructuring Costs (Tables)

Restructuring Costs (Tables)	3 Months Ended
	Mar. 31, 2021
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) Quarter Ended March 31, 2021 Pratt & Whitney $ 20 Collins Aerospace Systems 18 Corporate expenses and other unallocated items 5 Total $ 43 Restructuring charges incurred during the quarter ended March 31, 2021 primarily relate to actions initiated during 2021 and 2020, and were recorded as follows: (dollars in millions) Quarter Ended March 31, 2021 Cost of sales $ 20 Selling, general and administrative 23 Total $ 43
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 2021 restructuring actions by segment: (dollars in millions) Expected Costs Incurred Quarter Ended March 31, 2021 Remaining Costs at March 31, 2021 Pratt & Whitney $ 20 $ (20) $ — Collins Aerospace Systems 49 (16) 33 Corporate expenses and other unallocated items — — — Total $ 69 $ (36) $ 33
Schedule of Restructuring Reserve by Type of Cost [Table Text Block]	The following table summarizes the accrual balance and utilization for the 2021 restructuring actions for the quarter ended March 31, 2021: (dollars in millions) Severance Facility Exit and Other Costs Total Restructuring accruals at December 31, 2020 $ — $ — $ — Net pre-tax restructuring costs 24 12 36 Utilization, foreign exchange and other costs (1) (3) (4) Balance at March 31, 2021 $ 23 $ 9 $ 32
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 2020 restructuring actions by segment: (dollars in millions) Expected Costs Incurred in 2020 Costs Incurred Quarter Ended March 31, 2021 Remaining Costs at March 31, 2021 Pratt & Whitney $ 205 $ (205) $ — $ — Collins Aerospace Systems 340 (333) 1 8 Corporate expenses and other unallocated items 237 (232) (5) — Total $ 782 $ (770) $ (4) $ 8
Schedule of Restructuring Reserve by Type of Cost [Table Text Block]	The following table summarizes the accrual balances and utilization for the 2020 restructuring actions for the quarter ended March 31, 2021: (dollars in millions) Severance Facility Exit, and Other Costs Total Restructuring accruals at December 31, 2020 $ 334 $ 6 $ 340 Net pre-tax restructuring costs 1 3 4 Utilization, foreign exchange and other costs (130) (5) (135) Balance at March 31, 2021 $ 205 $ 4 $ 209

Financial Instruments (Tables)

Financial Instruments (Tables)	3 Months Ended
	Mar. 31, 2021
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 Sheet for derivative instruments as of March 31, 2021 and December 31, 2020: (dollars in millions) Balance Sheet Location March 31, 2021 December 31, 2020 Derivatives designated as hedging instruments: Foreign exchange contracts Other assets, current $ 171 $ 197 Other accrued liabilities 105 66 Derivatives not designated as hedging instruments: Foreign exchange contracts Other assets, current $ 22 $ 44 Other accrued liabilities 62 32
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 (loss) and on the Condensed Consolidated Statement of Operations for the quarters ended March 31, 2021 and 2020 are presented in the table below. The amounts of gain or loss are attributable to foreign exchange contract activity and are generally recorded as a component of Product sales when reclassified from Accumulated other comprehensive income (loss). Quarter Ended March 31, (dollars in millions) 2021 2020 Loss recorded in Accumulated other comprehensive loss $ (46) $ (403) (Gain) loss reclassified from Accumulated other comprehensive loss into Product sales (14) 29
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 within Other income, net, on the Condensed Consolidated Statement of Operations was as follows: Quarter Ended March 31, (dollars in millions) 2021 2020 Foreign exchange contracts $ (8) $ (39)

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	3 Months Ended
	Mar. 31, 2021
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 basis in our Condensed Consolidated Balance Sheet as of March 31, 2021 and December 31, 2020: March 31, 2021 (dollars in millions) Total Level 1 Level 2 Level 3 Recurring fair value measurements: Marketable securities held in trusts $ 879 $ 813 $ 66 $ — Derivative assets 193 — 193 — Derivative liabilities (167) — (167) — December 31, 2020 (dollars in millions) Total Level 1 Level 2 Level 3 Recurring fair value measurements: Marketable securities held in trusts $ 881 $ 773 $ 108 $ — Derivative assets 241 — 241 — Derivative liabilities (98) — (98) —
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 March 31, 2021 and December 31, 2020: March 31, 2021 December 31, 2020 (dollars in millions) Carrying Fair Carrying Fair Customer financing notes receivable $ 313 $ 303 $ 271 $ 264 Short-term borrowings (234) (234) (247) (247) Long-term debt (excluding finance leases) (31,200) (35,633) (31,512) (38,615) Long-term liabilities (28) (27) (27) (25) 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 March 31, 2021 and December 31, 2020: March 31, 2021 (dollars in millions) Total Level 1 Level 2 Level 3 Customer financing notes receivable $ 303 $ — $ 303 $ — Short-term borrowings (234) — (160) (74) Long-term debt (excluding finance leases) (35,633) — (35,559) (74) Long-term liabilities (27) — (27) — December 31, 2020 (dollars in millions) Total Level 1 Level 2 Level 3 Customer financing notes receivable $ 264 $ — $ 264 $ — Short-term borrowings (247) — (160) (87) Long-term debt (excluding finance leases) (38,615) — (38,540) (75) Long-term liabilities (25) — (25) —

Variable Interest Entities (Tab

Variable Interest Entities (Tables)	3 Months Ended
	Mar. 31, 2021
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Schedule of Variable Interest Entities	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) March 31, 2021 December 31, 2020 Current assets $ 7,670 $ 6,652 Noncurrent assets 853 868 Total assets $ 8,523 $ 7,520 Current liabilities $ 8,372 $ 7,365 Noncurrent liabilities 83 89 Total liabilities $ 8,455 $ 7,454

Guarantees (Tables)

Guarantees (Tables)	3 Months Ended
	Mar. 31, 2021
Service and Product Warranties and Product Performance Guarantees [Abstract]
Schedule of guarantees	As of March 31, 2021 and December 31, 2020, the following guarantees were outstanding: March 31, 2021 December 31, 2020 (dollars in millions) Maximum Potential Payment Carrying Amount of Liability Maximum Potential Payment Carrying Amount of Liability Commercial aerospace financing arrangements $ 314 $ 6 $ 322 $ 6 Third party guarantees 379 2 386 3
Product Warranty Disclosure [Table Text Block]	The changes in the carrying amount of service and product warranties and product performance guarantees for the quarters ended March 31, 2021 and 2020 are as follows: (dollars in millions) 2021 2020 Balance as of January 1 $ 1,057 $ 1,033 Warranties and performance guarantees issued 113 90 Settlements (69) (87) Other (1) (11) Balance as of March 31 $ 1,100 $ 1,025

Accumulated Other Comprehensi_2

Accumulated Other Comprehensive Loss (Tables)	3 Months Ended
	Mar. 31, 2021
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]	A summary of the changes in each component of Accumulated other comprehensive loss, net of tax for the quarters ended March 31, 2021 and 2020 is provided below: (dollars in millions) Foreign Currency Translation Defined Benefit Pension and Post-retirement Plans Unrealized Hedging (Losses) Gains Accumulated Other Comprehensive Income (Loss) Balance at December 31, 2020 $ 710 $ (4,483) $ 39 $ (3,734) Other comprehensive income (loss) before (176) (10) (46) (232) Amounts reclassified, pre-tax — 64 (14) 50 Tax benefit (expense) (5) (12) 12 (5) Balance at March 31, 2021 $ 529 $ (4,441) $ (9) $ (3,921) (dollars in millions) Foreign Currency Translation Defined Benefit Pension and Post-retirement Plans Unrealized Hedging (Losses) Gains Accumulated Other Comprehensive Income (Loss) Balance at December 31, 2019 $ (3,211) $ (6,772) $ (166) $ (10,149) Other comprehensive income (loss) before (1,445) 8 (403) (1,840) Amounts reclassified, pre-tax — 102 29 131 Tax expense (benefit) 9 (31) 92 70 Balance at March 31, 2020 $ (4,647) $ (6,693) $ (448) $ (11,788)

Segment Financial Data (Tables)

Segment Financial Data (Tables)	3 Months Ended
	Mar. 31, 2021
Segment Reporting [Abstract]
Schedule of Segment Reporting Information, by Segment [Table Text Block]	Results for the quarters ended March 31, 2021 and 2020 are as follows: Net Sales Operating Profit Operating Profit Margins (dollars in millions) 2021 2020 2021 2020 2021 2020 Collins Aerospace Systems $ 4,370 $ 6,438 $ 314 $ 1,246 7.2 % 19.4 % Pratt & Whitney 4,030 5,353 20 475 0.5 % 8.9 % Raytheon Intelligence & Space 3,765 — 388 — 10.3 % — % Raytheon Missiles & Defense 3,793 — 496 — 13.1 % — % Total segment 15,958 11,791 1,218 1,721 7.6 % 14.6 % Eliminations and other (1) (707) (431) (31) (25) Corporate expenses and other unallocated items (2) — — (81) (130) FAS/CAS operating adjustment — — 423 — Acquisition accounting adjustments — — (516) (271) Consolidated $ 15,251 $ 11,360 $ 1,013 $ 1,295 6.6 % 11.4 % (1) Includes the operating results of certain smaller non-reportable business segments. (2) The net expenses related to the U.S. Army’s Lower Tier Air and Missile Defense Sensor (LTAMDS) project of $58 million in the quarter ended March 31, 2021 are included in Corporate operating profit as they are not included in management’s evaluation of business segment results. No amounts were recorded in the quarter ended March 31, 2020.
Disaggregation of Revenue	Segment sales disaggregated by geographic region for the quarters ended March 31, 2021 and 2020 are as follows: 2021 2020 (dollars in millions) Collins Aerospace Systems Pratt & Whitney Raytheon Intelligence & Space Raytheon Missiles & Defense Other Total Collins Aerospace Systems Pratt & Whitney Raytheon Intelligence & Space Raytheon Missiles & Defense Other Total United States $ 2,242 $ 2,159 $ 2,965 $ 2,357 $ 7 $ 9,730 $ 3,144 $ 2,355 $ — $ — $ 5 $ 5,504 Asia Pacific 405 793 204 370 — 1,772 604 1,421 — — — 2,025 Middle East and North Africa 95 104 133 660 — 992 143 172 — — — 315 Europe 1,079 626 114 327 1 2,147 1,745 1,017 — — — 2,762 Canada and All Other 217 348 29 16 — 610 372 382 — — — 754 Consolidated net sales 4,038 4,030 3,445 3,730 8 15,251 6,008 5,347 — — 5 11,360 Inter-segment sales 332 — 320 63 (715) — 430 6 — — (436) — Business segment sales $ 4,370 $ 4,030 $ 3,765 $ 3,793 $ (707) $ 15,251 $ 6,438 $ 5,353 $ — $ — $ (431) $ 11,360 Segment sales disaggregated by customer for the quarters ended March 31, 2021 and 2020 are as follows: 2021 2020 (dollars in millions) Collins Aerospace Systems Pratt & Whitney Raytheon Intelligence & Space Raytheon Missiles & Defense Other Total Collins Aerospace Systems Pratt & Whitney Raytheon Intelligence & Space Raytheon Missiles & Defense Other Total U.S. government (1) $ 1,222 $ 1,262 $ 2,900 $ 2,357 $ 7 $ 7,748 $ 1,289 $ 1,239 $ — $ — $ — $ 2,528 Foreign military sales through the U.S. government 40 242 208 805 — 1,295 55 271 — — — 326 Foreign government direct commercial sales 245 139 229 567 — 1,180 225 138 — — — 363 Commercial aerospace and other commercial 2,531 2,387 108 1 1 5,028 4,439 3,699 — — 5 8,143 Consolidated net sales 4,038 4,030 3,445 3,730 8 15,251 6,008 5,347 — — 5 11,360 Inter-segment sales 332 — 320 63 (715) — 430 6 — — (436) — Business segment sales $ 4,370 $ 4,030 $ 3,765 $ 3,793 $ (707) $ 15,251 $ 6,438 $ 5,353 $ — $ — $ (431) $ 11,360 (1) Excludes foreign military sales through the U.S. government. Segment sales disaggregated by sales type for the quarters ended March 31, 2021 and 2020 are as follows: 2021 2020 (dollars in millions) Collins Aerospace Systems Pratt & Whitney Raytheon Intelligence & Space Raytheon Missiles & Defense Other Total Collins Aerospace Systems Pratt & Whitney Raytheon Intelligence & Space Raytheon Missiles & Defense Other Total Product $ 3,182 $ 2,423 $ 2,676 $ 3,375 $ 8 $ 11,664 $ 4,905 $ 3,255 $ — $ — $ 5 $ 8,165 Service 856 1,607 769 355 — 3,587 1,103 2,092 — — — 3,195 Consolidated net sales 4,038 4,030 3,445 3,730 8 15,251 6,008 5,347 — — 5 11,360 Inter-segment sales 332 — 320 63 (715) — 430 6 — — (436) — Business segment sales $ 4,370 $ 4,030 $ 3,765 $ 3,793 $ (707) $ 15,251 $ 6,438 $ 5,353 $ — $ — $ (431) $ 11,360 RIS and RMD segment sales disaggregated by contract type for the quarter ended March 31, 2021 are as follows: 2021 (dollars in millions) Raytheon Intelligence & Space Raytheon Missiles & Defense Fixed-price $ 1,471 $ 2,251 Cost-type 1,974 1,479 Consolidated net sales $ 3,445 $ 3,730

Acquisitions, Dispositions, G_3

Acquisitions, Dispositions, Goodwill and Intangible Assets (General Information) (Details) - USD ($) $ / shares in Units, $ in Millions	Jan. 08, 2021	Apr. 03, 2020	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020
Business Acquisition [Line Items]
Goodwill			$ 54,265		$ 54,285
Proceeds from Divestiture of Businesses and Interests in Affiliates			1,049	$ 0
Assets			160,608		162,153
Liabilities			87,266		88,269
Forcepoint
Business Acquisition [Line Items]
Proceeds from Divestiture of Businesses and Interests in Affiliates	$ 1,000
Forcepoint | Disposal Group, Held-for-sale, Not Discontinued Operations [Member]
Business Acquisition [Line Items]
Assets					1,900
Liabilities					855
Goodwill and intangible assets					$ 1,400
Carrier [Member]
Business Acquisition [Line Items]
Shares of common stock distributed in the Distribution		866,158,910
Otis [Member]
Business Acquisition [Line Items]
Shares of common stock distributed in the Distribution		433,079,455
Raytheon Company [Member]
Business Acquisition [Line Items]
Business Acquisition UTC stock payable shares		2.3348
Fair value of RTC common stock issued for Raytheon Company outstanding common stock and vested equity awards		$ 33,067
Fair value attributable to pre-merger service for replacement equity awards		99
Total estimated merger consideration		$ 33,166
Common Stock, Shares, Outstanding		277,300,000
Stock awards vested as a result of the Raytheon Merger		400,000
Total outstanding shares entitled to merger consideration		277,700,000
Shares of RTC common stock issued for Raytheon Company outstanding common stock and vested equity awards		648,400,000
Price per share of RTC common stock		$ 51
Goodwill, Purchase Accounting Adjustments			61
Cash and cash equivalents		$ 3,208
Accounts receivable		1,997
Inventory		705
Contract assets		6,023
Other assets, current		940
Fixed assets		4,745
Operating lease right-of-use assets		950
Intangible assets:		19,130
Other assets		1,218
Total identifiable assets acquired		38,916
Accounts payable		1,477
Accrued employee compensation		1,492
Other accrued liabilities		1,921
Contract liabilities		3,002
Long-term debt, including current portion		4,700
Operating lease liabilities, non-current portion		738
Future pension and postretirement benefit obligation		11,607
Other long-term liabilities		2,368
Total liabilities acquired		27,305
Total identifiable net assets		11,611
Goodwill		21,589
Redeemable noncontrolling interest		(34)
Total consideration transferred		33,166
Fair value adjustments to fixed assets		1,100
Fair value adjustment to future pension and postretirement benefit obligations		3,600
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Loss Contracts		222
Business Combination, Acquisition Related Costs			$ 17	29
Net sales				18,451
Income from continuing operations attributable to common shareowners				$ 1,239
Basic earnings per share of common stock from continuing operations				$ 0.82
Diluted earnings per share of common stock from continuing operations				$ 0.82
Amortization of acquired Raytheon Company intangible assets, net (1)				$ (270)
Amortization of fixed asset fair value adjustment (2)				(9)
Utilization of contractual customer obligation (3)				8
Deferred revenue fair value adjustment (4)				(4)
Adjustment to non-service pension (income) expense (5)				239
RTC/Raytheon fees for advisory, legal, accounting services (6)				35
Adjustment to interest expense related to the Raytheon Merger, net (7)				9
Elimination of deferred commission amortization (8)				5
Pro Forma Nonrecurring Adjustments, Net				$ 13
Raytheon Company [Member] | Customer Relationships [Member]
Business Acquisition [Line Items]
Finite-Lived Intangibles		$ 12,900
Finite-Lived Intangible Asset, Useful Life		25 years
Raytheon Company [Member] | Trademarks
Business Acquisition [Line Items]
Finite-Lived Intangibles		$ 5,430
Raytheon Company [Member] | Developed technology and other
Business Acquisition [Line Items]
Finite-Lived Intangibles		$ 800
Raytheon Company [Member] | Developed technology and other | Maximum [Member]
Business Acquisition [Line Items]
Finite-Lived Intangible Asset, Useful Life		7 years
Raytheon Company [Member] | Developed technology and other | Minimum [Member]
Business Acquisition [Line Items]
Finite-Lived Intangible Asset, Useful Life		5 years

Acquisition, Dispositions, Good

Acquisition, Dispositions, Goodwill and Intangible Assets (Goodwill) (Details) $ in Millions	3 Months Ended
	Mar. 31, 2021USD ($)
Goodwill [Line Items]
Goodwill - Beginning Balance	$ 54,285
Goodwill Resulting from Business Combinations	82
Goodwill - Foreign Currency Translation and Other	(102)
Goodwill - Ending Balance	54,265
Collins Aerospace Systems [Member]
Goodwill [Line Items]
Goodwill - Beginning Balance	31,571
Goodwill Resulting from Business Combinations	0
Goodwill - Foreign Currency Translation and Other	(98)
Goodwill - Ending Balance	31,473
Pratt & Whitney [Member]
Goodwill [Line Items]
Goodwill - Beginning Balance	1,563
Goodwill Resulting from Business Combinations	0
Goodwill - Foreign Currency Translation and Other	0
Goodwill - Ending Balance	1,563
Raytheon Intelligence & Space [Member]
Goodwill [Line Items]
Goodwill - Beginning Balance	9,522
Goodwill Resulting from Business Combinations	30
Goodwill - Foreign Currency Translation and Other	0
Goodwill - Ending Balance	9,552
Goodwill, Transfers	282
Raytheon Missiles & Defense
Goodwill [Line Items]
Goodwill - Beginning Balance	11,608
Goodwill Resulting from Business Combinations	52
Goodwill - Foreign Currency Translation and Other	0
Goodwill - Ending Balance	11,660
Goodwill, Transfers	(282)
Total Segments [Member]
Goodwill [Line Items]
Goodwill - Beginning Balance	54,264
Goodwill Resulting from Business Combinations	82
Goodwill - Foreign Currency Translation and Other	(98)
Goodwill - Ending Balance	54,248
Eliminations and other [Member]
Goodwill [Line Items]
Goodwill - Beginning Balance	21
Goodwill Resulting from Business Combinations	0
Goodwill - Foreign Currency Translation and Other	(4)
Goodwill - Ending Balance	$ 17

Acquisitions, Dispositions, G_4

Acquisitions, Dispositions, Goodwill and Intangible Assets (Intangible Assets) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2021	Dec. 31, 2020
Finite-Lived Intangible Assets [Line Items]
Gross Amount		$ 38,841	$ 38,757
Accumulated Amortization		(7,551)	(6,932)
Unamortized: Trademarks and Other		8,709	8,714
Total Intangible Assets Gross Excluding Goodwill		47,550	47,471
Collins Aerospace Systems [Member]
Finite-Lived Intangible Assets [Line Items]
Impairment of Intangible Assets (Excluding Goodwill)	$ 40
Patents and trademarks [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Amount		48	48
Accumulated Amortization		(36)	(35)
Collaboration assets
Finite-Lived Intangible Assets [Line Items]
Gross Amount		5,047	5,021
Accumulated Amortization		(1,042)	(1,024)
Exclusivity assets
Finite-Lived Intangible Assets [Line Items]
Gross Amount		2,581	2,541
Accumulated Amortization		(305)	(295)
Developed technology and other
Finite-Lived Intangible Assets [Line Items]
Gross Amount		928	906
Accumulated Amortization		(364)	(316)
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Gross Amount		30,237	30,241
Accumulated Amortization		$ (5,804)	$ (5,262)

Acquisitions, Dispositions, G_5

Acquisitions, Dispositions, Goodwill and Intangible Assets (Amortization Expense) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net [Abstract]
Amortization of Intangible Assets	$ 596	$ 307
Amortization Expense, Remaining 2021	1,862
Amortization Expense, 2022	1,953
Amortization Expense, 2023	2,078
Amortization Expense, 2024	2,139
Amortization Expense, 2025	2,034
Amortization Expense, 2026	$ 1,974

Discontinued Operations and D_3

Discontinued Operations and Disposal Groups (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Loss from discontinued operations attributable to common shareowners	$ (19)	$ (521)
Income (loss) from discontinued operations, before tax	(20)	(176)
Income tax (benefit) expense from discontinued operations	(1)	302
Income (Loss) from discontinued operations	(19)	(478)
Less: Noncontrolling interest in subsidiaries’ earnings from discontinued operations	0	43
Net cash used in operating activities	(5)	(472)
Net cash used in investing activities	0	(241)
Net cash provided by financing activities	5	322
Otis [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Loss from discontinued operations attributable to common shareowners	0	187
Selling, general and administrative expense	0	450
Other income (expense), net	0	(65)
Income (loss) from discontinued operations, before tax	0	340
Income tax (benefit) expense from discontinued operations	0	116
Income (Loss) from discontinued operations	0	224
Less: Noncontrolling interest in subsidiaries’ earnings from discontinued operations	0	37
Otis [Member] | Research and Development Expense
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Research and development	0	38
Otis [Member] | Nonoperating Income (Expense)
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Non-operating (income) expense, net	0	3
Otis [Member] | Product [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Sales	0	1,123
Costs of Goods Sold	0	913
Otis [Member] | Service [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Sales	0	1,843
Costs of Goods Sold	0	1,157
Carrier [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Loss from discontinued operations attributable to common shareowners	0	196
Selling, general and administrative expense	0	669
Other income (expense), net	0	(30)
Income (loss) from discontinued operations, before tax	0	304
Income tax (benefit) expense from discontinued operations	0	102
Income (Loss) from discontinued operations	0	202
Less: Noncontrolling interest in subsidiaries’ earnings from discontinued operations	0	6
Carrier [Member] | Research and Development Expense
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Research and development	0	98
Carrier [Member] | Nonoperating Income (Expense)
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Non-operating (income) expense, net	0	17
Carrier [Member] | Product [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Sales	0	3,143
Costs of Goods Sold	0	2,239
Carrier [Member] | Service [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Sales	0	741
Costs of Goods Sold	0	527
Separation related transactions
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Loss from discontinued operations attributable to common shareowners	(19)	(904)
Selling, general and administrative expense	20	154
Income (loss) from discontinued operations, before tax	(20)	(820)
Income tax (benefit) expense from discontinued operations	(1)	84
Separation related transactions | Nonoperating Income (Expense)
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Non-operating (income) expense, net	$ 0	$ 666

Earnings Per Share (Details)

Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Net income attributable to common shareowners:
Income from continuing operations attributable to common shareowners	$ 772	$ 438
Loss from discontinued operations attributable to common shareowners	(19)	(521)
Net income attributable to common shareowners	$ 753	$ (83)
Basic weighted average number of shares outstanding	1,511.1	858.4
Stock awards and equity units (share equivalent)	3	7.4
Diluted weighted average number of shares outstanding	1,514.1	865.8
Earnings (loss) Per Share attributable to common shareowners - Basic:
Income from continuing operations	$ 0.51	$ 0.51
Loss from discontinued operations	(0.01)	(0.61)
Earnings Per Share, Basic	0.50	(0.10)
Earnings (loss) Per Share attributable to common shareowners - Diluted:
Income from continuing operations	0.51	0.50
Loss from discontinued operations	(0.01)	(0.60)
Earnings Per Share, Diluted	$ 0.50	$ (0.10)
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	26.7	9.3

Changes in Contract Estimates_3

Changes in Contract Estimates at Completion (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Accounting Policies [Abstract]
Contract with Customer, Performance Obligation Satisfied in Previous Period	$ 52	$ 17

Changes in Contract Estimates_4

Changes in Contract Estimates at Completion (Schedule of Change in Accounting Estimate) (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Change in Accounting Estimate [Line Items]
Operating profit	$ 1,013	$ 1,295
Income from continuing operations attributable to common shareowners	$ 772	$ 438
Diluted earnings per share from continuing operations attributable to common shareholders (1)	$ 0.51	$ 0.50
Contracts Accounted for under Percentage of Completion [Member]
Change in Accounting Estimate [Line Items]
Operating profit	$ 12	$ 21
Income from continuing operations attributable to common shareowners	$ 9	$ 16
Diluted earnings per share from continuing operations attributable to common shareholders (1)	$ 0.01	$ 0.02

Accounts Receivable, Net (Detai

Accounts Receivable, Net (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020
Accounts, Notes, Loans and Financing Receivable [Line Items]
Factored receivables	$ 1,600	$ 2,700
Restricted Cash	37	$ 48
Factored receivables [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Restricted Cash	16		$ 10
Accrued Liabilities	$ 16		$ 10

Accounts Receivable, Net (Sched

Accounts Receivable, Net (Schedule of Receivables, Net) (Details) - USD ($) $ in Millions	Mar. 31, 2021	Dec. 31, 2020	Mar. 31, 2020	Dec. 31, 2019
Receivables [Abstract]
Accounts receivable	$ 10,557	$ 9,800
Allowance for expected credit losses	(520)	(546)	$ (308)	$ (254)
Total accounts receivable, net	$ 10,037	$ 9,254

Accounts Receivable, Net (Allow

Accounts Receivable, Net (Allowance for Credit Loss) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Accounts, Notes, Loans and Financing Receivable [Line Items]
Balance as of January 1	$ 546	$ 254
Current period provision for expected credit losses, net of recoveries (1)	(20)	47
Write-offs charged against the allowance for expected credit losses	(5)	(2)
Other, net(2)	(1)	9
Balance as of March 31,	$ 520	308
ASU 2016-13 [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Other, net(2)		34
COVID-19 [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current period provision for expected credit losses, net of recoveries (1)		$ 38

Contract Asset and Liability (D

Contract Asset and Liability (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020
Revenue from contract with customer [Line Items]
Contract assets	$ 10,238		$ 9,931
Contract liabilities	(12,879)		(12,889)
Net contract liabilities	(2,641)		(2,958)
Contract with Customer, Asset, Change	307
Contract with Customer, Liability, Revenue Recognized	1,705	$ 1,183
Advances received to date on contracts related to precision guided munitions to certain Middle Eastern customers pending U.S. government approval	440
Contract with Customer, Asset, Allowance for Credit Loss	$ 222		$ 177

Inventory, Net (Details)

Inventory, Net (Details) - USD ($) $ in Millions	Mar. 31, 2021	Dec. 31, 2020
Inventory Disclosure [Abstract]
Raw materials	$ 2,995	$ 3,015
Work-in-process	3,240	2,924
Finished goods	3,263	3,472
Inventory, net	9,498	9,411
Inventory Valuation Reserves	$ 1,842	$ 1,788

Borrowings and Lines of Credi_2

Borrowings and Lines of Credit (Short-Term Borrowings) (Details) - USD ($) $ in Millions	Mar. 31, 2021	Dec. 31, 2020
Short-term Debt [Line Items]
Commercial paper	$ 160	$ 160
Other borrowings	74	87
Total short-term borrowings	$ 234	$ 247

Borrowing and Lines of Credit (

Borrowing and Lines of Credit (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Line of Credit Facility [Line Items]
Maximum Commercial Paper Borrowing Authority	$ 5,000
Aggregate Line of Credit Agreements, Maximum Borrowing Capacity	7,000
Borrowings outstanding	0
Proceeds from Issuance of Debt	$ 0
Average Years of Maturity of Long Term Debt	14 years
Average interest expense rate	4.10%	3.80%
5.0B Revolving Credit Agreement [Member]
Line of Credit Facility [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity	$ 5,000
$2.0B May 6, 2020 revolving credit agreement [Member]
Line of Credit Facility [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity	$ 2,000

Borrowings and Lines of Credi_3

Borrowings and Lines of Credit (Long-Term Debt) (Details) € in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2021USD ($)	Mar. 31, 2020USD ($)	Mar. 31, 2021EUR (€)	Dec. 31, 2020USD ($)	Mar. 31, 2020EUR (€)
Debt Instrument [Line Items]
Proceeds from Issuance of Debt	$ 0
Extinguishment of Debt, Amount		$ 660
Other (including finance leases)	296			$ 292
Total principal long-term debt	31,202			31,470
Other (fair market value adjustments, (discounts)/premiums, and debt issuance costs)	102			106
Total long-term debt	31,304			31,576
Less: current portion	1,369			550
Long-term debt, net of current portion	29,935			31,026
Otis 3-Year Term Loan due 2023
Debt Instrument [Line Items]
Proceeds from Issuance of Debt		$ 1,000
Debt Instrument, Maturity Date, Description		2023
Carrier 3-Year Term Loan due 2023
Debt Instrument [Line Items]
Proceeds from Issuance of Debt		$ 1,750
Debt Instrument, Maturity Date, Description		2023
Notes 1.923% Due 2023
Debt Instrument [Line Items]
Proceeds from Issuance of Debt		$ 500
Debt Instrument, Interest Rate, Stated Percentage					1.923%
Debt Instrument, Maturity Date, Description		2023
Libor plus 0.45% floating rates due 2023
Debt Instrument [Line Items]
Proceeds from Issuance of Debt		$ 500
Debt Instrument, Interest Rate, Stated Percentage					0.45%
Debt Instrument, Maturity Date, Description		2023
Notes 2.056% Due 2025
Debt Instrument [Line Items]
Proceeds from Issuance of Debt		$ 1,300
Debt Instrument, Interest Rate, Stated Percentage					2.056%
Debt Instrument, Maturity Date, Description		2025
Notes 2.242% Due 2025
Debt Instrument [Line Items]
Proceeds from Issuance of Debt		$ 2,000
Debt Instrument, Interest Rate, Stated Percentage					2.242%
Debt Instrument, Maturity Date, Description		2025
Notes 2.293% Due 2027
Debt Instrument [Line Items]
Proceeds from Issuance of Debt		$ 500
Debt Instrument, Interest Rate, Stated Percentage					2.293%
Debt Instrument, Maturity Date, Description		2027
Notes 2.493% Due 2027
Debt Instrument [Line Items]
Proceeds from Issuance of Debt		$ 1,250
Debt Instrument, Interest Rate, Stated Percentage					2.493%
Debt Instrument, Maturity Date, Description		2027
Notes 2.565% Due 2030
Debt Instrument [Line Items]
Proceeds from Issuance of Debt		$ 1,500
Debt Instrument, Interest Rate, Stated Percentage					2.565%
Debt Instrument, Maturity Date, Description		2030
Notes 2.722% Due 2030
Debt Instrument [Line Items]
Proceeds from Issuance of Debt		$ 2,000
Debt Instrument, Interest Rate, Stated Percentage					2.722%
Debt Instrument, Maturity Date, Description		2030
Notes 3.112% Due 2040
Debt Instrument [Line Items]
Proceeds from Issuance of Debt		$ 750
Debt Instrument, Interest Rate, Stated Percentage					3.112%
Debt Instrument, Maturity Date, Description		2040
Notes 3.377% Due 2040
Debt Instrument [Line Items]
Proceeds from Issuance of Debt		$ 1,500
Debt Instrument, Interest Rate, Stated Percentage					3.377%
Debt Instrument, Maturity Date, Description		2040
Notes 3.362% Due 2050
Debt Instrument [Line Items]
Proceeds from Issuance of Debt		$ 750
Debt Instrument, Interest Rate, Stated Percentage					3.362%
Debt Instrument, Maturity Date, Description		2050
Notes 3.577% Due 2050
Debt Instrument [Line Items]
Proceeds from Issuance of Debt		$ 2,000
Debt Instrument, Interest Rate, Stated Percentage					3.577%
Debt Instrument, Maturity Date, Description		2050
Notes 8.750% Due 2021 [Member]
Debt Instrument [Line Items]
Repayments of Debt	$ 250
Debt Instrument, Interest Rate, Stated Percentage	8.75%		8.75%
Debt Instrument, Maturity Date, Description	2021
Long-term Debt, Gross	$ 0			250
Notes 4.500% Due 2020 [Member]
Debt Instrument [Line Items]
Repayments of Debt		$ 1,250
Debt Instrument, Interest Rate, Stated Percentage					4.50%
Debt Instrument, Maturity Date, Description		2020
Note 1.125% Due 2021 [Member]
Debt Instrument [Line Items]
Repayments of Debt		$ 1,082
Debt Instrument, Interest Rate, Stated Percentage					1.125%
Debt Instrument, Maturity Date, Description		2021
Long-term Debt, Gross | €					€ 950
Notes 1.250% due 2023 [Member]
Debt Instrument [Line Items]
Repayments of Debt		$ 836
Debt Instrument, Interest Rate, Stated Percentage					1.25%
Debt Instrument, Maturity Date, Description		2023
Long-term Debt, Gross | €					€ 750
Notes 1.150% Due 2024 [Member]
Debt Instrument [Line Items]
Repayments of Debt		$ 841
Debt Instrument, Interest Rate, Stated Percentage					1.15%
Debt Instrument, Maturity Date, Description		2024
Long-term Debt, Gross | €					€ 750
Notes 1.875% Due 2026 [Member]
Debt Instrument [Line Items]
Repayments of Debt		$ 567
Debt Instrument, Interest Rate, Stated Percentage					1.875%
Debt Instrument, Maturity Date, Description		2026
Long-term Debt, Gross | €					€ 500
Notes 1.900% Due 2020 [Member]
Debt Instrument [Line Items]
Repayments of Debt		$ 1,000
Debt Instrument, Interest Rate, Stated Percentage					1.90%
Debt Instrument, Maturity Date, Description		2020
Notes 3.350% Due 2021 [Member]
Debt Instrument [Line Items]
Repayments of Debt		$ 1,000
Debt Instrument, Interest Rate, Stated Percentage					3.35%
Debt Instrument, Maturity Date, Description		2021
LIBOR plus 0.650% floating rate notes due 2021 [Member]
Debt Instrument [Line Items]
Repayments of Debt		$ 750
Debt Instrument, Interest Rate, Stated Percentage					0.65%
Debt Instrument, Maturity Date, Description		2021
Notes 1.950% Due 2021 [Member]
Debt Instrument [Line Items]
Repayments of Debt		$ 750
Debt Instrument, Interest Rate, Stated Percentage					1.95%
Debt Instrument, Maturity Date, Description		2021
Notes 2.300% Due 2022 [Member]
Debt Instrument [Line Items]
Repayments of Debt		$ 500
Debt Instrument, Interest Rate, Stated Percentage					2.30%
Debt Instrument, Maturity Date, Description		2022
Notes 3.100% Due 2022 [Member]
Debt Instrument [Line Items]
Repayments of Debt		$ 2,300
Debt Instrument, Interest Rate, Stated Percentage					3.10%
Debt Instrument, Maturity Date, Description		2022
Notes 2.800% Due 2024 [Member]
Debt Instrument [Line Items]
Repayments of Debt		$ 800
Debt Instrument, Interest Rate, Stated Percentage					2.80%
Debt Instrument, Maturity Date, Description		2024
Notes 4.875% Due 2020 [Member]
Debt Instrument [Line Items]
Repayments of Debt		$ 171
Debt Instrument, Interest Rate, Stated Percentage					4.875%
Debt Instrument, Maturity Date, Description		2020
Notes 3.650% Due 2023 [Member]
Debt Instrument [Line Items]
Repayments of Debt		$ 1,669
Debt Instrument, Interest Rate, Stated Percentage	3.65%		3.65%		3.65%
Debt Instrument, Maturity Date, Description	2023	2023
Long-term Debt, Gross	$ 171			171
Notes 2.650% Due 2026 [Member]
Debt Instrument [Line Items]
Repayments of Debt		$ 431
Debt Instrument, Interest Rate, Stated Percentage	2.65%		2.65%		2.65%
Debt Instrument, Maturity Date, Description	2026	2026
Long-term Debt, Gross	$ 719			719
Notes 3.100% Due 2021 [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	3.10%		3.10%
Debt Instrument, Maturity Date, Description	2021
Long-term Debt, Gross	$ 250			250
Notes 2.800% Due 2022 [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	2.80%		2.80%
Debt Instrument, Maturity Date, Description	2022
Long-term Debt, Gross	$ 1,100			1,100
Notes 2.500% Due 2022
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	2.50%		2.50%
Debt Instrument, Maturity Date, Description	2022
Long-term Debt, Gross	$ 1,100			1,100
Notes 3.700% Due 2023 [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	3.70%		3.70%
Debt Instrument, Maturity Date, Description	2023
Long-term Debt, Gross	$ 400			400
Notes 3.200% Due 2024 [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	3.20%		3.20%
Debt Instrument, Maturity Date, Description	2024
Long-term Debt, Gross	$ 950			950
Notes 3.150% Due 2024
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	3.15%		3.15%
Debt Instrument, Maturity Date, Description	2024
Long-term Debt, Gross	$ 300			300
Notes 3.950% Due 2025 [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	3.95%		3.95%
Debt Instrument, Maturity Date, Description	2025
Long-term Debt, Gross	$ 1,500			1,500
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	2027
Long-term Debt, Gross	$ 1,100			1,100
Notes 3.500% Due 2027 [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	3.50%		3.50%
Debt Instrument, Maturity Date, Description	2027
Long-term Debt, Gross	$ 1,300			1,300
Notes 7.200% Due 2027
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	7.20%		7.20%
Debt Instrument, Maturity Date, Description	2027
Long-term Debt, Gross	$ 382			382
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	2027
Long-term Debt, Gross	$ 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	2028
Long-term Debt, Gross	$ 400			400
Notes 7.000% Due 2028
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	7.00%		7.00%
Debt Instrument, Maturity Date, Description	2028
Long-term Debt, Gross	$ 185			185
Notes 4.125% Due 2028 [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	4.125%		4.125%
Debt Instrument, Maturity Date, Description	2028
Long-term Debt, Gross	$ 3,000			3,000
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	2029
Long-term Debt, Gross	$ 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	2030
Long-term Debt, Gross	$ 590			612
Debt Instrument, Face Amount | €			€ 500
Notes 2.250% Due 2030
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	2.25%		2.25%
Debt Instrument, Maturity Date, Description	2030
Long-term Debt, Gross	$ 1,000			1,000
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	2035
Long-term Debt, Gross	$ 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	2036
Long-term Debt, Gross	$ 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	2036
Long-term Debt, Gross	$ 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	2038
Long-term Debt, Gross	$ 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	2038
Long-term Debt, Gross	$ 1,000			1,000
Notes 4.450% Due 2038 [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	4.45%		4.45%
Debt Instrument, Maturity Date, Description	2038
Long-term Debt, Gross	$ 750			750
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	2040
Long-term Debt, Gross	$ 1,000			1,000
Notes 4.875% Due 2040
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	4.875%		4.875%
Debt Instrument, Maturity Date, Description	2040
Long-term Debt, Gross	$ 600			600
Notes 4.700% Due 2041
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	4.70%		4.70%
Debt Instrument, Maturity Date, Description	2041
Long-term Debt, Gross	$ 425			425
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	2042
Long-term Debt, Gross	$ 3,500			3,500
Notes 4.800% Due 2043 [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	4.80%		4.80%
Debt Instrument, Maturity Date, Description	2043
Long-term Debt, Gross	$ 400			400
Notes 4.200% Due 2044
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	4.20%		4.20%
Debt Instrument, Maturity Date, Description	2044
Long-term Debt, Gross	$ 300			300
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	2045
Long-term Debt, Gross	$ 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	2046
Long-term Debt, Gross	$ 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	2047
Long-term Debt, Gross	$ 600			600
Notes 4.350% Due 2047 [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	4.35%		4.35%
Debt Instrument, Maturity Date, Description	2047
Long-term Debt, Gross	$ 1,000			1,000
Notes 4.625% Due 2048 [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	4.625%		4.625%
Debt Instrument, Maturity Date, Description	2048
Long-term Debt, Gross	$ 1,750			1,750
Notes 3.125% Due 2050
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	3.125%		3.125%
Debt Instrument, Maturity Date, Description	2050
Long-term Debt, Gross	$ 1,000			$ 1,000

Employee Benefit Plans (Details

Employee Benefit Plans (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined benefit plans	$ 7	$ 8
PRB plans	0	0
Defined contribution plans	271	213
Liability, Defined Benefit Pension Plan, Noncurrent	9,808		$ 10,342
Non-service pension (income) expense	(491)	(168)
Total net periodic benefit (income) expense	(358)	(130)
Marketable securities held in trusts	879		881
UNITED STATES
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined benefit plans	0	0
Foreign Plan
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined benefit plans	7	8
Pension Plan [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Liability, Defined Benefit Pension Plan, Noncurrent	8,669		9,131
Service cost	131	37
Interest cost	312	253
Expected return on plan assets	(868)	(521)
Amortization of prior service cost (credit)	(42)	13
Recognized actuarial net loss (gain)	109	86
Net settlement and curtailment loss (gain)	0	0
Non-service pension (income) expense	(489)	(169)
Total net periodic benefit (income) expense	(358)	(132)
Other Postretirement Benefits Plan [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Liability, Defined Benefit Pension Plan, Noncurrent	1,073		1,072
Service cost	2	1
Interest cost	6	6
Expected return on plan assets	(5)	(1)
Amortization of prior service cost (credit)	(1)	(1)
Recognized actuarial net loss (gain)	(2)	(3)
Net settlement and curtailment loss (gain)	0	0
Non-service pension (income) expense	(2)	1
Total net periodic benefit (income) expense	0	$ 2
Other pension and PRB related items
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Liability, Defined Benefit Pension Plan, Noncurrent	$ 66		$ 139

Income Taxes (Unrecognized Tax

Income Taxes (Unrecognized Tax Benefit Changes) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2021
Significant Change In Unrecognized Tax Benefits Is Reasonably Possible [Line Items]
Effective Income Tax Rate Reconciliation, Percent	29.80%	56.50%
Effective Income Tax Rate Reconciliation, Deferred Tax Assets, Amount		$ 415
Unrecognized Tax Benefits, Interest on Income Taxes Expense	$ 143	$ 97
Unrecognized Tax Benefits, Interest on Income Taxes Accrued	9
Forcepoint
Significant Change In Unrecognized Tax Benefits Is Reasonably Possible [Line Items]
Effective Income Tax Rate Reconciliation, Disposition of Business, Amount	148
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
Minimum [Member] | Forecast [Member]
Significant Change In Unrecognized Tax Benefits Is Reasonably Possible [Line Items]
Effective Income Tax Rate Reconciliation, Tax Settlement, Amount			$ 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	$ 140
Maximum [Member] | Forecast [Member]
Significant Change In Unrecognized Tax Benefits Is Reasonably Possible [Line Items]
Effective Income Tax Rate Reconciliation, Tax Settlement, Amount			$ 100

Restructuring Costs (Details)

Restructuring Costs (Details) - USD ($) $ in Millions	3 Months Ended		12 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020
Restructuring Cost and Reserve [Line Items]
Net pre-tax restructuring costs	$ 43
Cost of Sales [Member]
Restructuring Cost and Reserve [Line Items]
Net pre-tax restructuring costs	20
Selling, General and Administrative Expenses [Member]
Restructuring Cost and Reserve [Line Items]
Net pre-tax restructuring costs	23
Pratt & Whitney [Member]
Restructuring Cost and Reserve [Line Items]
Net pre-tax restructuring costs	20
Collins Aerospace Systems [Member]
Restructuring Cost and Reserve [Line Items]
Net pre-tax restructuring costs	18
Eliminations and other [Member]
Restructuring Cost and Reserve [Line Items]
Net pre-tax restructuring costs	5
Current Year Actions [Member]
Restructuring Cost and Reserve [Line Items]
Net pre-tax restructuring costs	36
Utilization, foreign exchange and other costs	(4)
Restructuring Reserve	32		$ 0
Restructuring and Related Cost, Expected Cost [Abstract]
Expected Costs	69
Costs Incurred		$ (36)
Remaining Costs	33
Current Year Actions [Member] | Severance [Member]
Restructuring Cost and Reserve [Line Items]
Net pre-tax restructuring costs	24
Utilization, foreign exchange and other costs	(1)
Restructuring Reserve	23		0
Current Year Actions [Member] | Facility Exit, Lease Termination and Other Costs
Restructuring Cost and Reserve [Line Items]
Net pre-tax restructuring costs	12
Utilization, foreign exchange and other costs	(3)
Restructuring Reserve	9		0
Current Year Actions [Member] | Cost of Sales [Member]
Restructuring Cost and Reserve [Line Items]
Net pre-tax restructuring costs	21
Current Year Actions [Member] | Selling, General and Administrative Expenses [Member]
Restructuring Cost and Reserve [Line Items]
Net pre-tax restructuring costs	15
Current Year Actions [Member] | Pratt & Whitney [Member]
Restructuring and Related Cost, Expected Cost [Abstract]
Expected Costs	20
Costs Incurred		(20)
Remaining Costs	0
Current Year Actions [Member] | Collins Aerospace Systems [Member]
Restructuring and Related Cost, Expected Cost [Abstract]
Expected Costs	49
Costs Incurred		(16)
Remaining Costs	33
Current Year Actions [Member] | Eliminations and other [Member]
Restructuring and Related Cost, Expected Cost [Abstract]
Expected Costs	0
Costs Incurred		$ 0
Remaining Costs	0
Prior Year Actions [Member]
Restructuring Cost and Reserve [Line Items]
Net pre-tax restructuring costs	4
Utilization, foreign exchange and other costs	(135)
Restructuring Reserve	209		340
Restructuring and Related Cost, Expected Cost [Abstract]
Expected Costs	782
Costs Incurred	(4)		(770)
Remaining Costs	8
Prior Year Actions [Member] | Severance [Member]
Restructuring Cost and Reserve [Line Items]
Net pre-tax restructuring costs	1
Utilization, foreign exchange and other costs	(130)
Restructuring Reserve	205		334
Prior Year Actions [Member] | Facility Exit, Lease Termination and Other Costs
Restructuring Cost and Reserve [Line Items]
Net pre-tax restructuring costs	3
Utilization, foreign exchange and other costs	(5)
Restructuring Reserve	4		6
Prior Year Actions [Member] | Cost of Sales [Member]
Restructuring Cost and Reserve [Line Items]
Net pre-tax restructuring costs	(2)
Prior Year Actions [Member] | Selling, General and Administrative Expenses [Member]
Restructuring Cost and Reserve [Line Items]
Net pre-tax restructuring costs	6
Prior Year Actions [Member] | Pratt & Whitney [Member]
Restructuring and Related Cost, Expected Cost [Abstract]
Expected Costs	205
Costs Incurred	0		(205)
Remaining Costs	0
Prior Year Actions [Member] | Collins Aerospace Systems [Member]
Restructuring and Related Cost, Expected Cost [Abstract]
Expected Costs	340
Costs Incurred	1		(333)
Remaining Costs	8
Prior Year Actions [Member] | Eliminations and other [Member]
Restructuring and Related Cost, Expected Cost [Abstract]
Expected Costs	237
Costs Incurred	(5)		$ (232)
Remaining Costs	0
Two Years Prior Actions [Member]
Restructuring Cost and Reserve [Line Items]
Net pre-tax restructuring costs	3
Restructuring Reserve	$ 32

Financial Instruments (Details)

Financial Instruments (Details) € in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2021USD ($)	Mar. 31, 2020USD ($)	Mar. 31, 2021EUR (€)	Dec. 31, 2020USD ($)
Derivatives, Fair Value [Line Items]
Derivative, Notional Amount	$ 11,100			$ 11,600
Gain (loss) recorded in Accumulated other comprehensive loss	(46)	$ (403)
(Gain) loss reclassified from Accumulated other comprehensive loss into Product Sales (effective portion)	(14)	29
Foreign Currency Cash Flow Hedge Loss to be Reclassified During Next 12 Months	22
Gain recognized in Other income, net	(8)	$ (39)
Notes 2.150% Due 2030 [Member]
Derivatives, Fair Value [Line Items]
Long-term debt, euro-denominated | €			€ 500
Other Current Assets [Member]
Derivatives, Fair Value [Line Items]
Derivatives designated as hedging instruments, Asset Derivatives	171			197
Derivatives not designated as hedging instruments, Asset Derivatives	22			44
Accrued Liabilities [Member]
Derivatives, Fair Value [Line Items]
Derivatives designated as hedging instruments, Liability Derivatives	105			66
Derivatives not designated as hedging instruments, Liability Derivatives	$ 62			$ 32

Fair Value Measurements (Fair V

Fair Value Measurements (Fair Value Hierarchy Classification) (Details) - USD ($) $ in Millions	Mar. 31, 2021	Dec. 31, 2020
Portion at Other than Fair Value Measurement [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Customer financing notes receivable	$ 313	$ 271
Short-term borrowings	(234)	(247)
Long-term debt (excluding finance leases)	(31,200)	(31,512)
Long-term liabilities	(28)	(27)
Marketable securities held in trusts	879	881
Short-term borrowings	(234)	(247)
Fair Value [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities held in trusts		881
Derivative assets	193	241
Derivative liabilities	(167)	(98)
Customer financing notes receivable	303	264
Short-term borrowings	(234)	(247)
Long-term debt (excluding finance leases)	(35,633)	(38,615)
Long-term liabilities	(27)	(25)
Fair Value Level 1 [Member] | Fair Value [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities held in trusts	813	773
Derivative assets	0	0
Derivative liabilities	0	0
Customer financing notes receivable	0	0
Short-term borrowings	0	0
Long-term debt (excluding finance leases)	0	0
Long-term liabilities	0	0
Fair Value Level 2 [Member] | Fair Value [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities held in trusts	66	108
Derivative assets	193	241
Derivative liabilities	(167)	(98)
Customer financing notes receivable	303	264
Short-term borrowings	(160)	(160)
Long-term debt (excluding finance leases)	(35,559)	(38,540)
Long-term liabilities	(27)	(25)
Fair Value Level 3 [Member] | Fair Value [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities held in trusts	0	0
Derivative assets	0	0
Derivative liabilities	0	0
Customer financing notes receivable	0	0
Short-term borrowings	(74)	(87)
Long-term debt (excluding finance leases)	(74)	(75)
Long-term liabilities	$ 0	$ 0

Variable Interest Entities (Det

Variable Interest Entities (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Dec. 31, 2020
Variable Interest Entity [Line Items]
Assets, Current	$ 42,552	$ 43,376
Assets	160,608	162,153
Liabilities, Current	36,359	35,848
Liabilities	87,266	88,269
Variable Interest Entity, Primary Beneficiary
Variable Interest Entity [Line Items]
Assets, Current	7,670	6,652
Assets, Noncurrent	853	868
Assets	8,523	7,520
Liabilities, Current	8,372	7,365
Liabilities, Noncurrent	83	89
Liabilities	$ 8,455	$ 7,454
International Aero Engines AG [Member]
Variable Interest Entity [Line Items]
Variable Interest Entity, Qualitative of Quantitative Information, Net Percentage	61.00%
Variable Interest Entity, Qualitative or Quantitative Information, Ownership Percentage	49.50%
International Aero Engines LLC [Member]
Variable Interest Entity [Line Items]
Variable Interest Entity, Qualitative of Quantitative Information, Net Percentage	59.00%
Variable Interest Entity, Qualitative or Quantitative Information, Ownership Percentage	59.00%

Guarantees (Details)

Guarantees (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020
Product Warranty Liability [Line Items]
Balance as of January 1	$ 1,057	$ 1,033
Warranties and performance guarantees issued	113	90
Settlements made	(69)	(87)
Other	(1)	(11)
Balance as of March 31	1,100	$ 1,025
Commercial Aerospace Financing Arrangements
Product Warranty Liability [Line Items]
Maximum Potential Payment	314		$ 322
Carrying Amount of Liability	6		6
Guarantee Type, Other
Product Warranty Liability [Line Items]
Carrying Amount of Liability	118		120
third party guarantees
Product Warranty Liability [Line Items]
Maximum Potential Payment	379		386
Carrying Amount of Liability	2		3
Commercial Aerospace [Member]
Product Warranty Liability [Line Items]
Partner Share of Guarantor Obligations, Maximum Exposure, Undiscounted	$ 144		$ 142

Commitments and Contingencies (

Commitments and Contingencies (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Dec. 31, 2020
Loss Contingencies [Line Items]
Accrual for Environmental Loss Contingencies	$ 834	$ 835
Other Commitment	11,000
Commercial Aerospace [Member]
Loss Contingencies [Line Items]
Financing and other contractual commitments	13,900	$ 13,400
Other Financing Arrangements [Member]
Loss Contingencies [Line Items]
Other Commitment	4,400
2019 U.S. Defense Contract Management Agency Claim Against Pratt & Whitney [Domain]
Loss Contingencies [Line Items]
Loss Contingency, Damages Sought, Value	1,730
Loss Contingency, Interest	675
2013 U.S. Defense Contract Management Agency Claim Against Pratt & Whitney [Member]
Loss Contingencies [Line Items]
Loss Contingency, Damages Sought, Value	177
Loss Contingency, Interest	112
2018 U.S. Defense Contract Management Agency Claim Against Pratt & Whitney [Member]
Loss Contingencies [Line Items]
Loss Contingency, Damages Sought, Value	269
Loss Contingency, Interest	$ 72

Accumulated Other Comprehensi_3

Accumulated Other Comprehensive Loss (Summary of Changes in AOCI) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020	Dec. 31, 2019
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated Other Comprehensive Income (Loss), Net of Tax	$ (3,921)	$ (11,788)	$ (3,734)	$ (10,149)
Other comprehensive (loss) income before reclassifications, net - Foreign Currency Translation	(176)	(1,445)
Amounts reclassified, pretax - Foreign Currency Translation	0	0
Tax benefit (expense) - Foreign Currency Translation	(5)	9
Other comprehensive (loss) income before reclassifications, net - Pension	(10)	8
Amounts reclassified, pretax - Pension	64	102
Tax benefit (expense) - Pension	(12)	(31)
Other comprehensive (loss) income before reclassifications, net - Unrealized Hedging (Losses) Gains	(46)	(403)
Amounts reclassified, pretax - Unrealized Hedging (Losses) Gains	(14)	29
Tax benefit (expense) - Unrealized Hedging (Losses) Gains	12	92
Other comprehensive (loss) income before reclassifications, net	(232)	(1,840)
Amounts reclassified, pre-tax	50	131
Tax benefit (expense)	(5)	70
Foreign Currency Translation
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated Other Comprehensive Income (Loss), Net of Tax	529	(4,647)	710	(3,211)
Defined Benefit Pension and Post-retirement Plans
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated Other Comprehensive Income (Loss), Net of Tax	(4,441)	(6,693)	(4,483)	(6,772)
Unrealized hedging (losses) gains
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated Other Comprehensive Income (Loss), Net of Tax	$ (9)	$ (448)	$ 39	$ (166)

Segment Financial Data (Segment

Segment Financial Data (Segment Operating Performance) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Segment Reporting Information [Line Items]
Revenues	$ 15,251	$ 11,360
Operating profit	$ 1,013	$ 1,295
Operating Profit Margin	6.60%	11.40%
Net expenses related to LTAMDS included in corporate operating income	$ 58	$ 0
Operating Segments
Segment Reporting Information [Line Items]
Revenues	15,958	11,791
Operating profit	$ 1,218	$ 1,721
Operating Profit Margin	7.60%	14.60%
Intersegment Eliminations
Segment Reporting Information [Line Items]
Revenues	$ (707)	$ (431)
Operating profit	(31)	(25)
Corporate, Non-Segment
Segment Reporting Information [Line Items]
Revenues	0	0
Operating profit	(81)	(130)
Collins Aerospace Systems [Member]
Segment Reporting Information [Line Items]
Revenues	4,370	6,438
Operating profit	$ 314	$ 1,246
Operating Profit Margin	7.20%	19.40%
Collins Aerospace Systems [Member] | Operating Segments
Segment Reporting Information [Line Items]
Revenues	$ 4,038	$ 6,008
Collins Aerospace Systems [Member] | Intersegment Eliminations
Segment Reporting Information [Line Items]
Revenues	332	430
Pratt & Whitney [Member]
Segment Reporting Information [Line Items]
Revenues	4,030	5,353
Operating profit	$ 20	$ 475
Operating Profit Margin	0.50%	8.90%
Pratt & Whitney [Member] | Operating Segments
Segment Reporting Information [Line Items]
Revenues	$ 4,030	$ 5,347
Pratt & Whitney [Member] | Intersegment Eliminations
Segment Reporting Information [Line Items]
Revenues	0	6
Raytheon Intelligence & Space [Member]
Segment Reporting Information [Line Items]
Revenues	3,765	0
Operating profit	$ 388	$ 0
Operating Profit Margin	10.30%	0.00%
Raytheon Intelligence & Space [Member] | Operating Segments
Segment Reporting Information [Line Items]
Revenues	$ 3,445	$ 0
Raytheon Intelligence & Space [Member] | Intersegment Eliminations
Segment Reporting Information [Line Items]
Revenues	320	0
Raytheon Missiles & Defense
Segment Reporting Information [Line Items]
Revenues	3,793	0
Operating profit	$ 496	$ 0
Operating Profit Margin	13.10%	0.00%
Raytheon Missiles & Defense | Operating Segments
Segment Reporting Information [Line Items]
Revenues	$ 3,730	$ 0
Raytheon Missiles & Defense | Intersegment Eliminations
Segment Reporting Information [Line Items]
Revenues	63	0
FAS/CAS Operating Adjustment | Segment Reconciling Items
Segment Reporting Information [Line Items]
Revenues	0	0
Operating profit	423	0
Acquisition accounting adjustment member | Segment Reconciling Items
Segment Reporting Information [Line Items]
Revenues	0	0
Operating profit	$ (516)	$ (271)

Segment Financial Data (Disaggr

Segment Financial Data (Disaggregation of Revenue) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Segment Reporting Information [Line Items]
Revenues	$ 15,251	$ 11,360
Product [Member]
Segment Reporting Information [Line Items]
Revenues	11,664	8,165
Service [Member]
Segment Reporting Information [Line Items]
Revenues	3,587	3,195
U.S. Government Sales Excluding Foreign Military Sales Member
Segment Reporting Information [Line Items]
Revenues	7,748	2,528
Foreign Military Sales Through the U.S. Government Member
Segment Reporting Information [Line Items]
Revenues	1,295	326
Foreign Government Direct Commercial Sales Member
Segment Reporting Information [Line Items]
Revenues	1,180	363
Commercial Aerospace and Other Commercial Member
Segment Reporting Information [Line Items]
Revenues	5,028	8,143
UNITED STATES
Segment Reporting Information [Line Items]
Revenues	9,730	5,504
Asia Pacific [Member]
Segment Reporting Information [Line Items]
Revenues	1,772	2,025
Middle East and North Africa Member
Segment Reporting Information [Line Items]
Revenues	992	315
Europe [Member]
Segment Reporting Information [Line Items]
Revenues	2,147	2,762
Canada and All Other [Member]
Segment Reporting Information [Line Items]
Revenues	610	754
Collins Aerospace Systems [Member]
Segment Reporting Information [Line Items]
Revenues	4,370	6,438
Collins Aerospace Systems [Member] | Product [Member]
Segment Reporting Information [Line Items]
Revenues	3,182	4,905
Collins Aerospace Systems [Member] | Service [Member]
Segment Reporting Information [Line Items]
Revenues	856	1,103
Collins Aerospace Systems [Member] | U.S. Government Sales Excluding Foreign Military Sales Member
Segment Reporting Information [Line Items]
Revenues	1,222	1,289
Collins Aerospace Systems [Member] | Foreign Military Sales Through the U.S. Government Member
Segment Reporting Information [Line Items]
Revenues	40	55
Collins Aerospace Systems [Member] | Foreign Government Direct Commercial Sales Member
Segment Reporting Information [Line Items]
Revenues	245	225
Collins Aerospace Systems [Member] | Commercial Aerospace and Other Commercial Member
Segment Reporting Information [Line Items]
Revenues	2,531	4,439
Collins Aerospace Systems [Member] | UNITED STATES
Segment Reporting Information [Line Items]
Revenues	2,242	3,144
Collins Aerospace Systems [Member] | Asia Pacific [Member]
Segment Reporting Information [Line Items]
Revenues	405	604
Collins Aerospace Systems [Member] | Middle East and North Africa Member
Segment Reporting Information [Line Items]
Revenues	95	143
Collins Aerospace Systems [Member] | Europe [Member]
Segment Reporting Information [Line Items]
Revenues	1,079	1,745
Collins Aerospace Systems [Member] | Canada and All Other [Member]
Segment Reporting Information [Line Items]
Revenues	217	372
Pratt & Whitney [Member]
Segment Reporting Information [Line Items]
Revenues	4,030	5,353
Pratt & Whitney [Member] | Product [Member]
Segment Reporting Information [Line Items]
Revenues	2,423	3,255
Pratt & Whitney [Member] | Service [Member]
Segment Reporting Information [Line Items]
Revenues	1,607	2,092
Pratt & Whitney [Member] | U.S. Government Sales Excluding Foreign Military Sales Member
Segment Reporting Information [Line Items]
Revenues	1,262	1,239
Pratt & Whitney [Member] | Foreign Military Sales Through the U.S. Government Member
Segment Reporting Information [Line Items]
Revenues	242	271
Pratt & Whitney [Member] | Foreign Government Direct Commercial Sales Member
Segment Reporting Information [Line Items]
Revenues	139	138
Pratt & Whitney [Member] | Commercial Aerospace and Other Commercial Member
Segment Reporting Information [Line Items]
Revenues	2,387	3,699
Pratt & Whitney [Member] | UNITED STATES
Segment Reporting Information [Line Items]
Revenues	2,159	2,355
Pratt & Whitney [Member] | Asia Pacific [Member]
Segment Reporting Information [Line Items]
Revenues	793	1,421
Pratt & Whitney [Member] | Middle East and North Africa Member
Segment Reporting Information [Line Items]
Revenues	104	172
Pratt & Whitney [Member] | Europe [Member]
Segment Reporting Information [Line Items]
Revenues	626	1,017
Pratt & Whitney [Member] | Canada and All Other [Member]
Segment Reporting Information [Line Items]
Revenues	348	382
Raytheon Intelligence & Space [Member]
Segment Reporting Information [Line Items]
Revenues	3,765	0
Raytheon Intelligence & Space [Member] | Fixed-price Contract
Segment Reporting Information [Line Items]
Revenues	1,471
Raytheon Intelligence & Space [Member] | Cost-type Contract
Segment Reporting Information [Line Items]
Revenues	1,974
Raytheon Intelligence & Space [Member] | Product [Member]
Segment Reporting Information [Line Items]
Revenues	2,676	0
Raytheon Intelligence & Space [Member] | Service [Member]
Segment Reporting Information [Line Items]
Revenues	769	0
Raytheon Intelligence & Space [Member] | U.S. Government Sales Excluding Foreign Military Sales Member
Segment Reporting Information [Line Items]
Revenues	2,900	0
Raytheon Intelligence & Space [Member] | Foreign Military Sales Through the U.S. Government Member
Segment Reporting Information [Line Items]
Revenues	208	0
Raytheon Intelligence & Space [Member] | Foreign Government Direct Commercial Sales Member
Segment Reporting Information [Line Items]
Revenues	229	0
Raytheon Intelligence & Space [Member] | Commercial Aerospace and Other Commercial Member
Segment Reporting Information [Line Items]
Revenues	108	0
Raytheon Intelligence & Space [Member] | UNITED STATES
Segment Reporting Information [Line Items]
Revenues	2,965	0
Raytheon Intelligence & Space [Member] | Asia Pacific [Member]
Segment Reporting Information [Line Items]
Revenues	204	0
Raytheon Intelligence & Space [Member] | Middle East and North Africa Member
Segment Reporting Information [Line Items]
Revenues	133	0
Raytheon Intelligence & Space [Member] | Europe [Member]
Segment Reporting Information [Line Items]
Revenues	114	0
Raytheon Intelligence & Space [Member] | Canada and All Other [Member]
Segment Reporting Information [Line Items]
Revenues	29	0
Raytheon Missiles & Defense
Segment Reporting Information [Line Items]
Revenues	3,793	0
Raytheon Missiles & Defense | Fixed-price Contract
Segment Reporting Information [Line Items]
Revenues	2,251
Raytheon Missiles & Defense | Cost-type Contract
Segment Reporting Information [Line Items]
Revenues	1,479
Raytheon Missiles & Defense | Product [Member]
Segment Reporting Information [Line Items]
Revenues	3,375	0
Raytheon Missiles & Defense | Service [Member]
Segment Reporting Information [Line Items]
Revenues	355	0
Raytheon Missiles & Defense | U.S. Government Sales Excluding Foreign Military Sales Member
Segment Reporting Information [Line Items]
Revenues	2,357	0
Raytheon Missiles & Defense | Foreign Military Sales Through the U.S. Government Member
Segment Reporting Information [Line Items]
Revenues	805	0
Raytheon Missiles & Defense | Foreign Government Direct Commercial Sales Member
Segment Reporting Information [Line Items]
Revenues	567	0
Raytheon Missiles & Defense | Commercial Aerospace and Other Commercial Member
Segment Reporting Information [Line Items]
Revenues	1	0
Raytheon Missiles & Defense | UNITED STATES
Segment Reporting Information [Line Items]
Revenues	2,357	0
Raytheon Missiles & Defense | Asia Pacific [Member]
Segment Reporting Information [Line Items]
Revenues	370	0
Raytheon Missiles & Defense | Middle East and North Africa Member
Segment Reporting Information [Line Items]
Revenues	660	0
Raytheon Missiles & Defense | Europe [Member]
Segment Reporting Information [Line Items]
Revenues	327	0
Raytheon Missiles & Defense | Canada and All Other [Member]
Segment Reporting Information [Line Items]
Revenues	16	0
Other Segments
Segment Reporting Information [Line Items]
Revenues	0	0
Other Segments | Product [Member]
Segment Reporting Information [Line Items]
Revenues	8	5
Other Segments | Service [Member]
Segment Reporting Information [Line Items]
Revenues	0	0
Other Segments | U.S. Government Sales Excluding Foreign Military Sales Member
Segment Reporting Information [Line Items]
Revenues	7	0
Other Segments | Foreign Military Sales Through the U.S. Government Member
Segment Reporting Information [Line Items]
Revenues	0	0
Other Segments | Foreign Government Direct Commercial Sales Member
Segment Reporting Information [Line Items]
Revenues	0	0
Other Segments | Commercial Aerospace and Other Commercial Member
Segment Reporting Information [Line Items]
Revenues	1	5
Other Segments | UNITED STATES
Segment Reporting Information [Line Items]
Revenues	7	5
Other Segments | Asia Pacific [Member]
Segment Reporting Information [Line Items]
Revenues	0	0
Other Segments | Middle East and North Africa Member
Segment Reporting Information [Line Items]
Revenues	0	0
Other Segments | Europe [Member]
Segment Reporting Information [Line Items]
Revenues	1	0
Other Segments | Canada and All Other [Member]
Segment Reporting Information [Line Items]
Revenues	0	0
Operating Segments
Segment Reporting Information [Line Items]
Revenues	15,958	11,791
Operating Segments | Collins Aerospace Systems [Member]
Segment Reporting Information [Line Items]
Revenues	4,038	6,008
Operating Segments | Pratt & Whitney [Member]
Segment Reporting Information [Line Items]
Revenues	4,030	5,347
Operating Segments | Raytheon Intelligence & Space [Member]
Segment Reporting Information [Line Items]
Revenues	3,445	0
Operating Segments | Raytheon Missiles & Defense
Segment Reporting Information [Line Items]
Revenues	3,730	0
Operating Segments | Other Segments
Segment Reporting Information [Line Items]
Revenues	8	5
Intersegment Eliminations
Segment Reporting Information [Line Items]
Revenues	(707)	(431)
Intersegment Eliminations | Collins Aerospace Systems [Member]
Segment Reporting Information [Line Items]
Revenues	332	430
Intersegment Eliminations | Pratt & Whitney [Member]
Segment Reporting Information [Line Items]
Revenues	0	6
Intersegment Eliminations | Raytheon Intelligence & Space [Member]
Segment Reporting Information [Line Items]
Revenues	320	0
Intersegment Eliminations | Raytheon Missiles & Defense
Segment Reporting Information [Line Items]
Revenues	63	0
Intersegment Eliminations | Other Segments
Segment Reporting Information [Line Items]
Revenues	$ (715)	$ (436)

Remaining Performance Obligat_2

Remaining Performance Obligations (RPO) (Details) - USD ($) $ in Billions	Mar. 31, 2021	Dec. 31, 2020
Revenue from Contract with Customer [Abstract]
RPO	$ 147.4	$ 150.1
RPO to be recognized within 12 months	30.00%

Accounting Pronouncements (Deta

Accounting Pronouncements (Details) - USD ($) $ in Millions	Mar. 31, 2021	Dec. 31, 2020
Change in Accounting Estimate [Line Items]
Retained earnings	$ 49,460	$ 49,423
Cumulative Effect, Period of Adoption, Adjustment | ASU 2016-13 [Member]
Change in Accounting Estimate [Line Items]
Retained earnings		$ 59