Honda Motor (HMC) 20-F 19 Jun 20 2020 FY Annual report (foreign) Financial data

Cover Page

Cover Page	12 Months Ended
	Mar. 31, 2020shares
Document Information [Line Items]
Document Type	20-F
Amendment Flag	false
Document Period End Date	Mar. 31, 2020
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	FY
Trading Symbol	HMC
Document Annual Report	true
Document Transition Report	false
Document Shell Company Report	false
Title of 12(b) Security	Common Stock
Entity Registrant Name	HONDA MOTOR CO LTD
Entity Central Index Key	0000715153
Current Fiscal Year End Date	--03-31
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Security Exchange Name	NYSE
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding	1,726,609,786
Entity Address, Country	JP
American Depositary Shares [Member]
Document Information [Line Items]
Entity Common Stock, Shares Outstanding	53,915,262

Consolidated Statements of Fina

Consolidated Statements of Financial Position - JPY (¥) ¥ in Millions	Mar. 31, 2020	Mar. 31, 2019
Current assets:
Cash and cash equivalents	¥ 2,672,353	¥ 2,494,121
Trade receivables	633,909	793,245
Receivables from financial services	1,878,358	1,951,633
Other financial assets	190,053	163,274
Inventories	1,560,568	1,586,787
Other current assets	365,769	358,234
Total current assets	7,301,010	7,347,294
Non-current assets:
Investments accounted for using the equity method	655,475	713,039
Receivables from financial services	3,282,807	3,453,617
Other financial assets	441,724	417,149
Intangible assets	760,434	744,368
Deferred tax assets	132,553	150,318
Other non-current assets	209,695	162,648
Total non-current assets	13,160,455	13,071,828
Total assets	20,461,465	20,419,122
Current liabilities:
Trade payables	958,469	1,184,882
Financing liabilities	3,248,457	3,188,782
Accrued expenses	449,716	476,300
Other financial liabilities	209,065	132,910
Income taxes payable	43,759	49,726
Provisions	287,175	348,763
Other current liabilities	593,447	599,761
Total current liabilities	5,790,088	5,981,124
Non-current liabilities:
Financing liabilities	4,221,229	4,142,338
Other financial liabilities	303,570	63,689
Retirement benefit liabilities	578,909	398,803
Provisions	238,439	220,745
Deferred tax liabilities	698,868	727,411
Other non-current liabilities	344,339	319,222
Total non-current liabilities	6,385,354	5,872,208
Total liabilities	12,175,442	11,853,332
Equity:
Common stock	86,067	86,067
Capital surplus	171,823	171,460
Treasury stock	(273,940)	(177,827)
Retained earnings	8,142,948	7,973,637
Other components of equity	(114,639)	214,383
Equity attributable to owners of the parent	8,012,259	8,267,720
Non-controlling interests	273,764	298,070
Total equity	8,286,023	8,565,790
Total liabilities and equity	20,461,465	20,419,122
Equipment on operating leases [member]
Non-current assets:
Property, plant and equipment	4,626,063	4,448,849
Property, plant and equipment [member]
Non-current assets:
Property, plant and equipment	¥ 3,051,704	¥ 2,981,840

Consolidated Statements of Inco

Consolidated Statements of Income - JPY (¥) ¥ in Millions	12 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2018
Profit or loss [abstract]
Sales revenue	¥ 14,931,009	¥ 15,888,617	¥ 15,361,146
Operating costs and expenses:
Cost of sales	(11,851,659)	(12,580,949)	(12,000,581)
Selling, general and administrative	(1,641,590)	(1,774,393)	(1,775,151)
Research and development	(804,123)	(806,905)	(751,856)
Total operating costs and expenses	(14,297,372)	(15,162,247)	(14,527,588)
Operating profit	633,637	726,370	833,558
Share of profit of investments accounted for using the equity method	164,203	228,827	247,643
Finance income and finance costs:
Interest income	49,412	48,618	41,191
Interest expense	(24,689)	(13,217)	(12,970)
Other, net	(32,645)	(11,223)	5,551
Total finance income and finance costs	(7,922)	24,178	33,772
Profit before income taxes	789,918	979,375	1,114,973
Income tax expense	(279,986)	(303,089)	13,666
Profit for the year	509,932	676,286	1,128,639
Profit for the year attributable to:
Owners of the parent	455,746	610,316	1,059,337
Non-controlling interests	¥ 54,186	¥ 65,970	¥ 69,302
Earnings per share attributable to owners of the parent
Basic and diluted	¥ 260.13	¥ 345.99	¥ 590.79

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income - JPY (¥) ¥ in Millions	12 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2018
Statement of comprehensive income [abstract]
Profit for the year	¥ 509,932	¥ 676,286	¥ 1,128,639
Items that will not be reclassified to profit or loss
Remeasurements of defined benefit plans	(102,983)	(23,745)	13,344
Net changes in revaluation of financial assets measured at fair value through other comprehensive income	(23,361)	(24,046)	19,288
Share of other comprehensive income of investments accounted for using the equity method	(1,550)	(2,837)	1,688
Items that may be reclassified subsequently to profit or loss
Net changes in revaluation of financial assets measured at fair value through other comprehensive income	279	228
Exchange differences on translating foreign operations	(293,201)	95,568	(204,184)
Share of other comprehensive income of investments accounted for using the equity method	(30,393)	(18,847)	10,620
Total other comprehensive income, net of tax	(451,209)	26,321	(159,244)
Comprehensive income for the year	58,723	702,607	969,395
Comprehensive income for the year attributable to:
Owners of the parent	24,287	637,609	899,545
Non-controlling interests	¥ 34,436	¥ 64,998	¥ 69,850

Consolidated Statements of Chan

Consolidated Statements of Changes in Equity - JPY (¥) ¥ in Millions	Total	Common stock [Member]	Capital surplus [Member]	Treasury stock [member]	Retained earnings [Member]	Other components of equity [member]	Equity attributable to owners of the parent [Member]	Non-controlling interests [Member]
Beginning balance at Mar. 31, 2017	¥ 7,569,626	¥ 86,067	¥ 171,118	¥ (26,189)	¥ 6,712,894	¥ 351,406	¥ 7,295,296	¥ 274,330
Comprehensive income for the year
Profit for the year	1,128,639				1,059,337		1,059,337	69,302
Other comprehensive income, net of tax	(159,244)					(159,792)	(159,792)	548
Total comprehensive income for the year	969,395				1,059,337	(159,792)	899,545	69,850
Reclassification to retained earnings					13,322	(13,322)
Transactions with owners and other
Dividends paid	(217,844)				(174,221)		(174,221)	(43,623)
Purchases of treasury stock	(87,083)			(87,083)			(87,083)
Disposal of treasury stock	1			1			1
Total transactions with owners and other	(304,926)			(87,082)	(174,221)		(261,303)	(43,623)
Ending balance (Previously stated [member]) at Mar. 31, 2018	8,234,095	86,067	171,118	(113,271)	7,611,332	178,292	7,933,538	300,557
Ending balance (Effect of changes in accounting policy [member]) at Mar. 31, 2018	(47,035)				(46,833)	(208)	(47,041)	6
Ending balance (Effect of hyperinflation [member]) at Mar. 31, 2018	5,442				(9,454)	14,896	5,442
Ending balance (Adjusted balance [member]) at Mar. 31, 2018	8,192,502	86,067	171,118	(113,271)	7,555,045	192,980	7,891,939	300,563
Comprehensive income for the year
Profit for the year	676,286				610,316		610,316	65,970
Other comprehensive income, net of tax | Effect of changes in accounting policy [member]						(208)
Other comprehensive income, net of tax	26,321					27,293	27,293	(972)
Total comprehensive income for the year	702,607				610,316	27,293	637,609	64,998
Reclassification to retained earnings					5,890	(5,890)
Transactions with owners and other
Dividends paid	(260,281)				(194,271)		(194,271)	(66,010)
Purchases of treasury stock	(64,557)			(64,557)			(64,557)
Disposal of treasury stock	1			1			1
Share-based payment transactions	342		342				342
Total transactions with owners and other	(324,495)		342	(64,556)	(194,271)		(258,485)	(66,010)
Other changes	(4,824)				(3,343)		(3,343)	(1,481)
Ending balance at Mar. 31, 2019	8,565,790	86,067	171,460	(177,827)	7,973,637	214,383	8,267,720	298,070
Comprehensive income for the year
Profit for the year	509,932				455,746		455,746	54,186
Other comprehensive income, net of tax	(451,209)					(431,459)	(431,459)	(19,750)
Total comprehensive income for the year	58,723				455,746	(431,459)	24,287	34,436
Reclassification to retained earnings					(102,437)	102,437
Transactions with owners and other
Dividends paid	(252,488)				(196,795)		(196,795)	(55,693)
Purchases of treasury stock	(96,284)			(96,284)			(96,284)
Disposal of treasury stock	171			171			171
Share-based payment transactions	363		363				363
Equity transactions and others	(3,049)							(3,049)
Total transactions with owners and other	(351,287)		363	(96,113)	(196,795)		(292,545)	(58,742)
Other changes	12,797				12,797		12,797
Ending balance at Mar. 31, 2020	¥ 8,286,023	¥ 86,067	¥ 171,823	¥ (273,940)	¥ 8,142,948	¥ (114,639)	¥ 8,012,259	¥ 273,764

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - JPY (¥) ¥ in Millions	12 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2018	Mar. 31, 2017
Cash flows from operating activities:
Profit before income taxes	¥ 789,918	¥ 979,375	¥ 1,114,973
Depreciation, amortization and impairment losses excluding equipment on operating leases	699,877	721,695	713,093
Share of profit of investments accounted for using the equity method	(164,203)	(228,827)	(247,643)
Finance income and finance costs, net	(47,892)	(88,608)	13,218
Interest income and interest costs from financial services, net	(130,636)	(124,076)	(127,529)
Changes in assets and liabilities
Trade receivables	132,702	9,344	(41,778)
Inventories	(59,931)	(60,906)	(202,916)
Trade payables	(141,159)	(11,816)	69,429
Accrued expenses	(4,529)	25,372	(2,700)
Provisions and retirement benefit liabilities	118	(1,590)	(28,945)
Receivables from financial services	103,614	(260,704)	(174,438)
Equipment on operating leases	(270,677)	(230,311)	(158,337)
Other assets and liabilities	(20,524)	11,045	11,602
Other, net	10,959	3,706	9,314
Dividends received	185,742	175,244	161,106
Interest received	288,821	270,776	245,095
Interest paid	(162,263)	(150,162)	(115,317)
Income taxes paid, net of refund	(230,522)	(263,569)	(250,556)
Net cash provided by operating activities	979,415	775,988	987,671
Cash flows from investing activities:
Payments for additions to property, plant and equipment	(370,195)	(420,768)	(415,563)
Payments for additions to and internally developed intangible assets	(231,063)	(187,039)	(156,927)
Proceeds from sales of property, plant and equipment and intangible assets	17,638	20,765	15,042
Payments for acquisitions of subsidiaries, net of cash and cash equivalents acquired	(3,047)
Payments for acquisitions of investments accounted for using the equity method	(14,584)	(2,401)	(2,450)
Payments for acquisitions of other financial assets	(282,806)	(506,431)	(280,236)
Proceeds from sales and redemptions of other financial assets	265,980	515,670	224,302
Other, net	(1,404)	2,649	719
Net cash used in investing activities	(619,481)	(577,555)	(615,113)
Cash flows from financing activities:
Proceeds from short-term financing liabilities	9,037,608	8,435,249	8,106,505
Repayments of short-term financing liabilities	(9,039,601)	(8,213,698)	(8,004,620)
Proceeds from long-term financing liabilities	2,021,173	1,900,257	1,689,596
Repayments of long-term financing liabilities	(1,676,504)	(1,726,097)	(1,609,554)
Dividends paid to owners of the parent	(196,795)	(194,271)	(174,221)
Dividends paid to non-controlling interests	(54,280)	(66,872)	(48,332)
Purchases and sales of treasury stock, net	(96,113)	(64,556)	(87,082)
Repayments of lease liabilities	(78,659)	(47,088)	(46,626)	¥ (46,626)
Other, net	(4,240)
Net cash provided by (used in) financing activities	(87,411)	22,924	(174,334)
Effect of exchange rate changes on cash and cash equivalents	(94,291)	16,276	(47,712)
Net change in cash and cash equivalents	178,232	237,633	150,512
Cash and cash equivalents at beginning of year	2,494,121	2,256,488	2,105,976
Cash and cash equivalents at end of year	¥ 2,672,353	¥ 2,494,121	¥ 2,256,488	¥ 2,105,976

Reporting Entity

Reporting Entity	12 Months Ended
	Mar. 31, 2020
Text block [abstract]
Reporting Entity	(1) Reporting Entity Honda Motor Co., Ltd. (the “Company”) is a public company domiciled in Japan. The Company and its subsidiaries (collectively “Honda”) develop, manufacture and distribute motorcycles, automobiles, power products and others throughout the world, and also provide financial services to customers and dealers for the sale of those products. Principal manufacturing facilities are located in Japan, the United States of America, Canada, Mexico, the United Kingdom, Turkey, Italy, France, China, India, Indonesia, Malaysia, Thailand, Vietnam, Argentina and Brazil.

Basis of Preparation

Basis of Preparation	12 Months Ended
	Mar. 31, 2020
Text block [abstract]
Basis of Preparation	(2) Basis of Preparation (a) Compliance with International Financial Reporting Standards The Company’s consolidated financial statements have been prepared in accordance with International Financial Reporting Standards (“IFRS”), as issued by the International Accounting Standards Board (“IASB”). The term “IFRS” also includes International Accounting Standards (IASs) and the related interpretations of the interpretations committees (SIC and IFRIC). (b) Basis of Measurement The consolidated financial statements have been prepared on the historical cost basis, except for certain assets and liabilities separately stated in note 3. (c) Functional Currency and Presentation Currency The consolidated financial statements are presented in Japanese yen, which is the functional currency of the Company. All financial information presented in Japanese yen has been rounded to the nearest million Japanese yen, except when otherwise indicated. (d) Changes in Accounting Policies IFRS 16 “Leases” Honda has adopted IFRS 16 “Leases” with a date of initial application of April 1, 2019. Honda used the modified retrospective approach, under which the cumulative effect of initial application was recognized as an adjustment to the opening balance of equity at the date of initial application. Therefore, the comparative information has not been restated and continues to be reported under the previous accounting policy. Previously, Honda determined at contract inception whether an arrangement was or contained a lease under IAS 17 “Leases” and IFRIC 4 “Determining whether an Arrangement contains a Lease”. Honda assesses whether a contract is or contains a lease under IFRS 16 on or after April 1, 2019. Honda applied the practical expedient to grandfather the assessment of which contract was or contained a lease when applying IFRS 16. Therefore, Honda applied IFRS 16 to all contracts entered into prior to April 1, 2019 and identified as leases under IAS 17 and IFRIC 4. IFRS 16 introduced a single on-balance right-of-use right-of-use right-of-use • Applied a single discount rate to a portfolio of leases with reasonably similar characteristics; • Adjusted the right-of-use • Excluded initial direct costs from the measurement of the right-of-use In the consolidated statements of financial position, lease liabilities are included in other financial liabilities and right-of-use Honda recognized additional lease liabilities of ¥272,232 million and total assets, mainly right-of-use The difference between the future minimum lease payments under non-cancelable Yen(millions) Future minimum lease payments under non-cancelable as of March 31, 2019 115,634 Discounted using the incremental borrowing rate as of April 1, 2019 108,147 Add: Finance lease obligations 62,308 Add: Cancelable operating leases 11,612 Add: Extension options reasonably certain to be exercised 152,473 Lease liabilities recognized as of April 1, 2019 334,540 (e) New Accounting Standards and Interpretations Not Yet Adopted None of new or amended standards and interpretations that have been issued as of the date of approval of the consolidated financial statements but are not effective and have not yet been adopted by Honda as of March 31, 2020 have a significant effect on the consolidated financial statements. (f) Use of Estimates and Judgments The preparation of consolidated financial statements in accordance with IFRS requires management to make judgments, estimates and assumptions that affect the application of accounting policies, the reported amount of assets, liabilities, revenues and expenses, and the disclosure of contingent assets and liabilities. Actual results could differ from these estimates. These estimates and underlying assumptions are reviewed on a continuous basis. Changes in these accounting estimates are recognized in the period in which the estimates are revised and in any future periods affected. Due to various responses resulted from the spread of COVID-19 including outing and travel restrictions in various countries, there has been stagnation of consumers’ consumptions and corporate economic activities. As of the date of this report, although it is difficult to reasonably predict the severity and duration of the spread of COVID-19, Honda accounted for estimates using assumptions where corporate economic activities restart and market gradually recovers as the spread of COVID-19 slows down, based upon the information available. In addition, customer credit risk and other factors are affected by changes in forecast, including increase in unemployment rate and decline in used vehicle prices due to the downturn of economy. Honda incorporated forward-looking factors of future economic conditions including aforementioned factors into estimates of credit risk relating to receivables from financial services and operating leases based on the information available as of the date of this report. As uncertainties in market trend and economic conditions may remain persistent considering duration of the spread of COVID-19 and countermeasures taken by each country and region, actual results in any future periods could differ materially from the estimates . Information about judgments that have been made in the process of applying accounting policies and that have significant effects on the amounts reported in the consolidated financial statements is as follows: • Scope of subsidiaries, affiliates and joint ventures (notes 3(a) and 3(b)) • Recognition of intangible assets arising from development (note 3(h)) • Accounting for contracts including lease (note 3(i)) Information about accounting estimates and assumptions that have significant effects on the amounts reported in the consolidated financial statements is as follows: • Valuation of financial assets measured at amortized cost and debt securities classified into financial assets measured at fair value through other comprehensive income (notes 6, 7 and 8) • Fair value of financial instruments (note 26) • Net realizable value of inventories (note 9) • Recoverable amount of non-financial • Measurement of provisions (note 17) • Measurement of net defined benefit liabilities (assets) (note 18) • Estimated amounts of variable consideration (note 20) • Recoverability of deferred tax assets (note 23) • Likelihood and magnitude of outflows of resources embodying economic benefits required to settle contingent liabilities (note 28)

Significant Accounting Policies

Significant Accounting Policies	12 Months Ended
	Mar. 31, 2020
Text block [abstract]
Significant Accounting Policies	(3) Significant Accounting Policies (a) Basis of Consolidation The consolidated financial statements include the accounts of the Company, its subsidiaries which are directly or indirectly controlled by the Company, and those structured entities which are controlled by Honda. All significant intercompany balances and transactions have been eliminated in consolidation. Honda controls an entity when Honda is exposed or has rights to variable returns from involvement with the entity, and has the ability to affect those returns by using its power, which is the current ability to direct the relevant activities, over the entity. To determine whether or not Honda controls an entity, status of voting rights or similar rights, contractual agreements and other specific factors are taken into consideration. Structured entities are entities designed so that voting or similar rights are not the dominant factor in deciding who controls the entity. Honda consolidates structured entities over which it has control, by comprehensively determining whether its control over the entity exists based on any contractual arrangements with such entity as well as the percentage of its voting or similar rights in the entity. The financial statements of subsidiaries are included in the consolidated financial statements from the date when the control is obtained until the date when the control is lost. The financial statements of subsidiaries have been adjusted in order to ensure consistency with the accounting policies adopted by the Company as necessary. Changes in the Company’s ownership interests in subsidiaries that do not result in a loss of control are accounted for as equity transactions. When control over a subsidiary is lost, the investment retained after the loss of control is remeasured at fair value as of the date of the loss of control, and any gain or loss on such remeasurement and disposal of the interest sold is recognized in profit or loss. (b) Investments in Affiliates and Joint Ventures (Investments Accounted for Using the Equity Method) Affiliates are entities over which Honda has a significant influence over the decisions on financial and operating policies, but does not have control or joint control. Joint ventures are joint arrangements whereby the parties including Honda that have joint control have rights to the net assets of the arrangement. Joint arrangements are arrangements of which two or more parties have joint control, and joint control is the contractually agreed sharing of control of an arrangement, which exists only when decisions about the relevant activities require the unanimous consent of the parties sharing control. Investments in affiliates and joint ventures are accounted for using the equity method from the date when the investees are determined to be affiliates or joint ventures until the date when they ceased to be classified as affiliates or joint ventures. Under the equity method, the investment is initially recognized at cost, and the carrying amount is subsequently increased or decreased, to recognize Honda’s share of profit or loss and other comprehensive income of the affiliate or the joint venture after the date of initial recognition. The financial statements of affiliates and joint ventures have been adjusted in order to ensure consistency with the accounting policies adopted by the Company in applying the equity method, as necessary. The use of the equity method is discontinued from the date when the investees are determined to be no longer affiliates or joint ventures. The investment retained after cessation of the equity method is remeasured at fair value, and any gain or loss on such remeasurement and disposal of the investment is recognized in profit or loss. (c) Foreign Currency Translations 1) Foreign currency transactions Foreign currency transactions are translated into the respective functional currencies at the exchange rates prevailing when such transactions occur. All foreign currency receivables and payables are translated into the respective functional currencies at the applicable exchange rates at the end of the reporting period. Gains or losses on exchange differences arising on settlement of foreign currency receivables and payables or on their translations at the end of the reporting date are recognized in profit or loss and they are included in finance income and finance costs-other, net in the consolidated statements of income. 2) Foreign operations All assets and liabilities of foreign subsidiaries, affiliates and joint ventures (collectively “foreign operations”), which use a functional currency other than Japanese yen, are translated into Japanese yen at the exchange rates at the end of the reporting period. All revenues and expenses of foreign operations are translated into Japanese yen at the average exchange rate for the period except when a functional currency is the currency of a hyperinflationary economy. Exchange differences arising from translation are recognized in other comprehensive income and accumulated in other components of equity in the consolidated statements of financial position. When a foreign operation is disposed of, and control, significant influence or joint control over the foreign operation is lost, the cumulative amount of exchange differences relating to the foreign operation is reclassified from equity to profit or loss. (d) Financial Instruments A financial instrument is a contract that gives rise to a financial asset of one entity and a financial liability or equity security of another entity. When Honda becomes a party to the contractual provision of a financial instrument, the financial instrument is recognized either as a financial asset or as a financial liability. When Honda purchases or sells a financial asset, the financial asset is recognized or derecognized at the trade date. 1) Non-derivative Honda classifies financial assets other than derivatives into “financial assets measured at amortized cost”, “financial assets measured at fair value through other comprehensive income” or “financial assets measured at fair value through profit or loss”. Honda determines the classification of financial assets upon initial recognition. Financial assets are derecognized when the contractual rights to cash flows from the financial assets expire, or when the contractual rights to receive the cash flows from the financial assets are transferred and all risks and rewards of ownership of the financial assets are substantially transferred. Financial assets measured at amortized cost A financial asset is classified into financial assets measured at amortized cost when the asset is held within a business model whose objective is to hold the asset in order to collect the contractual cash flows, and the contractual term of the financial asset gives rise on specified dates to cash flows that are solely payments of principal and interest on the principal amount outstanding. Financial assets measured at amortized cost except trade receivables arising from contracts with customers are initially measured at their fair value and trade receivables arising from contracts with customers are initially measured at their transaction price. Financial assets measured at amortized cost are subsequently measured at amortized cost using the effective interest method. Financial assets measured at fair value A financial asset other than a financial asset measured at amortized cost is classified into financial assets measured at fair value. The financial assets measured at fair value are further classified into the following categories: Financial assets measured at fair value through other comprehensive income A debt security is classified into financial assets measured at fair value through other comprehensive income when the asset is held within a business model whose objective is achieved by both collecting contractual cash flows and selling financial assets, and the contractual terms of the financial asset give rise on specified dates to cash flows that are solely payments of principal and interest on the principal amount outstanding. The debt securities are initially measured at their fair value, and subsequent changes in fair value are recognized in other comprehensive income except for impairment gain or loss and foreign exchange gain or loss. When the debt securities are derecognized, the cumulative gain or loss previously recognized in other comprehensive income is reclassified from equity to profit or loss. For the year ended March 31, 2018, the debt securities are classified into financial assets measured at fair value through profit or loss. Honda elects to designate investments in equity securities such as shares, held for maintaining and strengthening the trade relationship as financial assets measured at fair value through other comprehensive income. Equity securities designated as financial assets measured at fair value through other comprehensive income are initially measured at their fair value, and subsequent changes in fair value of the investment are recognized in other comprehensive income. However, dividends from the equity securities are principally recognized in profit or loss. When the equity securities are derecognized, the cumulative gain or loss previously recognized in other comprehensive income is directly reclassified to retained earnings. Financial assets measured at fair value through profit or loss Financial assets measured at fair value other than financial assets measured at fair value through other comprehensive income are classified into financial assets measured at fair value through profit or loss. Financial assets measured at fair value through profit or loss are initially measured at their fair value, and subsequent changes in fair value are recognized in profit or loss. (Cash and cash equivalents) Cash and cash equivalents consist of cash on hand, demand deposits, and short-term highly liquid investments that are readily convertible to known amounts of cash and are subject to insignificant risk of changes in value. Honda includes all highly liquid debt instruments with original maturities of three months or less in cash equivalents. 2) Non-derivative Financial liabilities other than derivatives are initially measured at their fair value, and are subsequently measured at amortized cost using the effective interest method. Financial liabilities are derecognized, when the obligations specified in the contract are discharged, canceled or expire. 3) Derivatives Honda has entered into foreign exchange and interest rate agreements to manage currency and interest rate exposures. These agreements include foreign currency forward exchange contracts, currency option contracts, currency swap agreements and interest rate swap agreements. All these derivatives are initially recognized as assets or liabilities and measured at fair value, when Honda becomes a party to the contractual provision of the derivatives. Subsequent changes in fair value of derivatives are recognized in profit or loss in the period of the changes. Honda has not held any derivatives designated as hedging instruments for the years ended March 31, 2018, 2019 and 2020. 4) Offsetting of financial assets and financial liabilities Financial assets and financial liabilities are offset and the net amount is presented in the consolidated statements of financial position, only when Honda currently has a legally enforceable right to offset the recognized amounts, and intends either to settle on a net basis or to realize the asset and settle the liability simultaneously. (e) Inventories Inventories are measured at the lower of cost and net realizable value. The cost of inventories includes purchase costs and conversion costs, and it is determined principally by using the first-in first-out (f) Equipment on Operating Leases Equipment on operating leases is measured based on the cost model and carried at its cost less accumulated depreciation and impairment losses. A vehicle subject to operating lease is initially measured at its cost. Depreciation of equipment on operating leases is calculated on the straight-line method over the lease term. The depreciable amount is the cost of the vehicle less its residual value which is estimated by using the estimate of future used vehicle value, taking into consideration external industry data and Honda’s historical experience. (g) Property, Plant and Equipment Property, plant and equipment is measured based on the cost model and carried at its cost less accumulated depreciation and impairment losses. Property, plant and equipment is initially measured at its cost. Subsequent expenditures on an item of property, plant and equipment acquired, are recognized in the carrying amount of the item, only when it is probable that the expenditure will generate a future economic benefit. Depreciation of property, plant and equipment, except for land that is not subject to depreciation, is calculated on the straight-line method over the estimated useful life. The depreciable amount is the cost of the asset less the respective estimated residual values. The estimated useful lives used in calculating depreciation of property, plant and equipment are mainly as follows: • Buildings and structures: 3 to 50 years • Machinery and equipment: 2 to 20 years The depreciation method, useful lives and residual values of property, plant and equipment are reviewed annually at each fiscal year end, and adjusted prospectively, if appropriate. Property, plant and equipment in the consolidated statements of financial position include right-of-use right-of-use (h) Intangible Assets Intangible assets are measured based on the cost model and carried at their cost less accumulated amortization and impairment losses. (Research and development) Development expenditure for a product is capitalized only when there is a technical and commercial feasibility of completing the development, Honda has intention, ability and sufficient resources to use the outcome of the development, it is probable that the outcome will generate a future economic benefit, and the cost can be measured reliably. Capitalized development cost is measured at the sum of expenditures for development incurred between when the foregoing conditions for capitalization are initially met and when the development is completed, and includes all directly attributable costs to the development process. Capitalized development cost is amortized using the straight-line method over the expected product life cycle of the developed product ranging mainly from 2 to 6 years. Expenditures on research and other development expenditures which do not meet the foregoing conditions are expensed as incurred. (Other intangible asset) Other intangible assets are initially measured at cost and principally amortized using the straight-line method over their estimated useful lives. Other intangible assets are mainly comprised of software for internal use whose estimated useful lives range from 3 to 5 years. The amortization method and useful lives of intangible assets are reviewed annually at each fiscal year end, and adjusted prospectively, if appropriate. (i) Lease Policy applicable from April 1, 2019 At inception of a contract, Honda assesses whether a contract is, or contains, a lease. A contract is, or contains, a lease if the contract conveys the right to control the use of an identified asset for a period of time in exchange for consideration. When Honda has the right to obtain substantially all of the economic benefits from use of the identified asset throughout the period of use and the right to direct the use of the identified asset, the contract conveys the right to control the use of the identified asset. 1) Lease as a lessee A right-of-use right-of-use non-lease non-lease non-lease The right-of-use right-of-use The lease liability is initially measured at the present value of the lease payments that are not paid at the commencement date, discounted using the interest rate implicit in the lease or, if that rate cannot be readily determined, Honda’s incremental borrowing rate. Lease payments included in the measurement of the lease liability comprise mainly the fixed payments (including the lease payments in an optional renewal period if Honda is reasonably certain to exercise the extension option) and the penalties for termination of a lease unless Honda is reasonably certain not to terminate early. After the initial recognition, the lease liability is measured by increasing the carrying amount to reflect interest that produces a When the lease liability is remeasured, the amount of the remeasurement of the lease liability is recognized as an adjustment to the right-of-use right-of-use 2) Lease as a lessor For a contract that is, or contains a lease, the lease is classified as a finance lease if it transfers substantially all the risks and rewards incidental to ownership of an underlying asset and Honda assesses the lease classification of a sub-lease right-of-use The finance subsidiaries of the Company engage in the business of leasing vehicles as a lessor. A receivable from customer held under a finance lease is initially recognized at the amount of net investment in the lease which is the gross investment in the lease discounted at the interest rate implicit in the lease, and included in receivables from financial services in the consolidated statements of financial position. Vehicles subject to operating leases are presented as equipment on operating leases in the consolidated statements of financial position. If a contract contains lease and non-lease Policy applicable before April 1, 2019 An arrangement that is or contains a lease is determined based on the substance of the arrangement by assessment of whether the fulfillment of that arrangement depends on use of a specific asset or group of assets, and whether a right to use the asset is transferred under the arrangement. When an arrangement is or contains a lease, the lease is classified as a finance lease if it transfers substantially all the risks and rewards incidental to the ownership, based on the substance of the arrangement. Leases other than finance lease are classified as operating lease. 1) Lease as a lessee A leased asset and liability for the future lease payment under a finance lease are initially recognized at the lower of fair value of the leased asset or the present value of the minimum lease payments, each determined at inception of the lease. After the initial recognition, the leased asset is accounted for according to the accounting policies applied to the asset. Lease payments under a finance lease are apportioned between the finance cost and the reduction in the carrying amount of the liability. Lease payments under an operating lease are recognized as an expense on a straight-line basis over the lease term. 2) Lease as a lessor The finance subsidiaries of the Company engage in the business of leasing vehicles as a lessor. A receivable from customer held under a finance lease is initially recognized at the amount of net investment in the lease which is the gross investment in the lease discounted at the interest rate implicit in the lease, and included in receivables from financial services in the consolidated statements of financial position. After the initial recognition, the receivable under finance lease is accounted for in accordance with the accounting policies applied to financial assets. Vehicles subject to operating leases are presented as equipment on operating leases in the consolidated statements of financial position. (j) Impairment 1) Financial assets measured at amortized cost and debt securities classified into financial assets measured at fair value through other comprehensive income Policy applicable from April 1, 2018 The allowance for impairment losses of financial assets measured at amortized cost other than trade receivables and debt securities classified into financial assets measured at fair value through other comprehensive income is measured at amounts according to the three-stage expected credit loss (ECL) model: Stage 1 12-month Stage 2 Lifetime ECL for financial assets with a significant increase in credit risk since initial recognition but that are not credit-impaired Stage 3 Lifetime ECL for credit-impaired financial assets The allowance for impairment losses of trade receivables is continuously measured at amounts equal to lifetime ECL. Lifetime ECL represents ECL that results from all possible default events over the expected life of a financial asset. 12-month Receivables from financial services – Allowance for credit losses The allowance for credit losses is management’s estimate of expected credit loss on receivables from financial services. To determine whether credit risk has increased significantly, consumer finance receivables are assessed both individually and collectively. Individual assessments are based on delinquencies. Consumer finance receivables 30 days or greater past due have historically experienced increased default rates and therefore are considered to have a significant increase in credit risk. Collective assessments are performed for groups of consumer finance receivables with shared risk characteristics such as the period of initial recognition, collateral type, original term, and credit score considering relative changes in expected default rates since initial recognition. Dealer finance receivables are assessed at the individual dealership level to determine whether credit risk has increased significantly considering payment performance and other factors such as changes in the financial condition of the dealership and compliance with debt covenants. Our definition of default on receivables from financial services varies depending on internal risk management practices of each of our finance subsidiaries. Our most significant finance subsidiary located in the United States considers delinquencies of 60 days past due to be in default. Collection efforts on consumer finance receivables are escalated after becoming 60 days past due including repossession of the underlying vehicles if it has been determined that the borrower is unable to perform on their obligations. Defaulted consumer finance receivables are considered to be credit-impaired. Dealer finance receivables are considered to be credit-impaired when there is evidence we will be unable to collect all amounts due in accordance with the original contractual terms including significant financial difficulty of the dealership, a breach of contract, such as a default or delinquency, or bankruptcy. At the finance subsidiary in the United States, the estimated uncollectible portion of consumer finance receivables are written-off written-off At the finance subsidiary in the United States, ECL of consumer finance receivables is measured for groups of financial assets with shared risk characteristics by reflecting historical results, current conditions and forward-looking factors such as unemployment rates, used vehicles prices, and consumer debt service burdens. Receivables from financial services – Allowance for losses on lease residual values The allowance for losses on lease residual values is management’s estimate of probable losses arising from declines in the estimated lease residual values incurred on receivables from finance leases. The finance subsidiaries of the Company purchase insurance to cover a substantial amount of the estimated residual value of a part of vehicles leased as finance leases to customers. The allowance for losses on lease residual values are maintained at an amount management deems adequate to cover estimated losses on the uninsured portion of the vehicles’ lease residual values. The allowance is also based on management’s evaluation of many factors, including current economic conditions, industry experience and the finance subsidiaries’ historical experience with residual value losses. Policy applicable before April 1, 2018 At the end of each reporting period, based on individual assets or assets grouped according to credit risk characteristics, financial assets measured at amortized cost are assessed to determine whether there is objective evidence that a financial asset or group of financial assets is impaired. Objective evidence of impairment includes significant financial difficulty of the issuer or the borrowers, a default or delinquency in interest or principal payments, an increase in the probability of bankruptcy or other financial restructuring of the issuer, and disappearance of an active market for the security. If there is an objective evidence that financial assets measured at amortized cost is impaired, the amount of impairment loss is measured as the difference between the carrying amount of the assets and its present value which is calculated by discounting estimated future cash flows using the asset’s original effective interest rate. The impairment loss is recognized in profit or loss, by deducting the carrying amount of the financial assets directly or through an allowance account. Further, if, in a subsequent period, the amount of impairment loss decreases and the decrease can be related objectively to an event occurring after impairment was recognized, the impairment loss which was recorded in prior periods is reversed and recognized in profit or loss. Receivables from financial services – Allowance for credit losses The allowance for credit losses is management’s estimate of probable losses incurred on receivables from financial services. Estimated losses on past due operating lease rental payments are also recognized through an allowance for credit losses. Consumer finance receivables are collectively evaluated for impairment. Delinquencies and losses are continuously monitored and this historical experience provides the primary basis for estimating the allowance. Various methodologies are utilized when estimating the allowance for credit losses including models that incorporate vintage loss and delinquency migration analysis. The models take into consideration attributes of the portfolio including loan-to-value Dealer finance receivables are individually evaluated for impairment when specifically identified as impaired. Dealer finance receivables are considered to be impaired when it is probable that the finance subsidiaries of the Company will be unable to collect all amounts due according to the original terms of the loan. The determination of whether dealer loans are impaired is based on evaluations of dealerships’ payment history, financial condition and cash flows, and their ability to perform under the terms of the loans. Dealer loans that have not been specifically identified as impaired are collectively evaluated for impairment. Receivables from financial services – Allowance for losses on lease residual values The allowance for losses on lease residual values is management’s estimate of probable losses arising from declines in the estimated lease residual values incurred on receivables from finance leases. The finance subsidiaries of the Company purchase insurance to cover a substantial amount of the estimated residual value of a part of vehicles leased as finance leases to customers. The allowance for losses on lease residual values are maintained at an amount management deems adequate to cover estimated losses on the uninsured portion of the vehicles’ lease residual values. The allowance is also based on management’s evaluation of many factors, including current economic conditions, industry experience and the finance subsidiaries’ historical experience with residual value losses. 2) Non-financial At the end of the reporting period, the carrying amount of non-financial For investments accounted for using the equity method, the entire carrying amount of each investment in affiliates and joint ventures is tested for impairment as a single asset, when there is objective evidence that the investments accounted for using the equity method may be impaired. The recoverable amount of an individual asset or a cash-generating unit is the higher of fair value less costs to sell and value in use. Value in use is determined as the present value of future cash flows expected to be derived from an asset or a cash-generating unit. A cash-generating unit is determined as the smallest identifiable group of assets that generate cash inflows which are largely independent of cash inflows from other assets or a group of assets. When it is not possible to estimate the recoverable amount of the individual asset, the recoverable amount of the cash-generating unit to which the asset belongs is estimated. When the carrying amount of an asset or a cash-generating unit exceeds the recoverable amount, the carrying amount is reduced to the recoverable amount and an impairment loss is recognized in profit or loss. An impairment loss for a cash-generating unit is allocated to the assets on the basis of the relative carrying amount of each asset in the unit. An impairment loss recognized for an asset or a cash-generating unit in prior period is reversed, if there is any indication that the impairment loss may have decreased or may no longer exist, and when the recoverable amount of the asset exceeds the carrying amount. If this is the case, the carrying amount of the asset is increased to its recoverable amount, but the increased carrying amount does not exceed the carrying amount (net of depreciation or amortization) calculated on the basis that no impairment loss had occurred in the prior period. (k) Provisions Provisions are recognized when Honda has present legal or constructive obligation as a result of past events, it is probable that an outflow of resources embodying economic benefits will be required to settle the obligation, and a reliable estimate can be made of the amount of the obligation. Provisions are measured based on the best estimate of expenditure required to settle the present obligation at the end of the reporting period. Where the effect of the time value of money is material, a provision is measured at the present value of the expenditures required to settle the obligation. In calculating the present value, a pre-tax (l) Employee Benefits 1) Short-term employee benefits For short-term employee benefits including salaries, bonuses and paid annual leave, when the employees render related services, the amounts expected to be paid in exchange for those services are recognized as expenses. 2) Post-employment benefits Honda has various post-employment benefit plans including defined benefit plans and defined contribution plans. Defined benefit plans For defined benefit plans, the present value of defined benefit obligations less the fair value of plan assets is recognized as either liability or asset in the consolidated statements of financial position. The present value of defined benefit obligations and service cost are principally determined for each plan using the projected unit credit method. The discount rate is determined by reference to market yields at the end of the reporting period on high quality corporate bonds that is consistent with the currency and estimated term of the post-employment benefit obligation. Net interest on the net defined benefit liability (asset) for the reporting period is determined by multiplying the net defined benefit liability (asset) by the discount rate. Past service cost defined as the change in the present value of the defined benefit obligation resulting from a plan amendment or curtailment is recognized in profit or loss upon occurrence of the plan amendment or curtailment. Honda recognizes the difference arising from remeasurement of present value of the defined benefit obligations and the fair value of the plan assets in other comprehensive income when it is incurred, and reclassifies it immediately to retained earnings. Defined contribution plans For defined contribution plans, when the employees render related services, the contribution payables to defined contribution plan are recognized as expenses. (m) Equity 1) Common share Common share issued by the Company is classified as equity, and the proceeds from issuance of common share are included in common stock and capital surplus. 2) Treasury stock Treasury stock acquired by Honda is recognized at cost and deducted from equity. When treasury stock is sold, the consideration received is recognized as equity with the difference between the carrying amount and the consideration received included in capital surplus. (n) Revenue Recognition 1) Sale of products Sales of products are reported by Motorcycle business, Automobile

Segment Information

Segment Information	12 Months Ended
	Mar. 31, 2020
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Segment Information	(4) Segment Information Honda has four reportable segments: Motorcycle business, Automobile business, Financial services business and Life creation and other businesses, which are based on Honda’s organizational structure and characteristics of products and services. Operating segments are defined as the components of Honda for which separate financial information is available that is evaluated regularly by the chief operating decision maker in deciding how to allocate resources and in assessing performance. The accounting policies used for these reportable segments are consistent with the accounting policies used in the Company’s consolidated financial statements. Principal products and services, and functions of each segment are as follows: Segment Principal products and services Functions Motorcycle Business Motorcycles, all-terrain side-by-sides Research and development Automobile Business Automobiles and relevant parts Research and development Financial Services Business Financial services Retail loan and lease related to Life Creation and Other Businesses Power products and relevant parts, and others Research and development (a) Segment Information Segment information as of and for the years ended March 31, 2018, 2019 and 2020 is as follows: As of and for the year ended March 31, 2018 Yen (millions) Motorcycle Automobile Financial Life Segment Reconciling Consolidated Sales revenue: External customers ¥ 2,038,712 ¥ 10,852,171 ¥ 2,123,194 ¥ 347,069 ¥ 15,361,146 ¥ — ¥ 15,361,146 Intersegment — 193,038 14,071 24,097 231,206 (231,206 ) — Total 2,038,712 11,045,209 2,137,265 371,166 15,592,352 (231,206 ) 15,361,146 Segment profit (loss) ¥ 267,015 ¥ 373,840 ¥ 196,067 ¥ (3,364 ) ¥ 833,558 ¥ — ¥ 833,558 Share of profit of investments accounted for using the equity method ¥ 31,270 ¥ 215,843 ¥ — ¥ 530 ¥ 247,643 ¥ — ¥ 247,643 Segment assets 1,533,367 7,879,769 9,409,243 314,838 19,137,217 211,947 19,349,164 Investments accounted for using the equity method 89,498 584,922 — 5,097 679,517 — 679,517 Depreciation and amortization 74,128 616,321 748,503 15,164 1,454,116 — 1,454,116 Capital expenditures 63,927 514,910 1,801,554 14,243 2,394,634 — 2,394,634 Impairment losses on non-financial 42 3,648 11,911 4 15,605 — 15,605 Provision for credit and lease residual losses on receivables from financial services — — 36,699 — 36,699 — 36,699 As of and for the year ended March 31, 2019 Yen (millions) Motorcycle Automobile Financial Life Segment Reconciling Consolidated Sales revenue: External customers ¥ 2,100,155 ¥ 11,072,117 ¥ 2,365,355 ¥ 350,990 ¥ 15,888,617 ¥ — ¥ 15,888,617 Intersegment — 215,647 14,687 26,266 256,600 (256,600 ) — Total 2,100,155 11,287,764 2,380,042 377,256 16,145,217 (256,600 ) 15,888,617 Segment profit (loss) ¥ 291,642 ¥ 209,694 ¥ 235,945 ¥ (10,911 ) ¥ 726,370 ¥ — ¥ 726,370 Share of profit of investments accounted for using the equity method ¥ 29,704 ¥ 198,505 ¥ — ¥ 618 ¥ 228,827 ¥ — ¥ 228,827 Segment assets 1,523,817 7,923,802 10,236,066 328,870 20,012,555 406,567 20,419,122 Investments accounted for using the equity method 88,494 619,091 — 5,454 713,039 — 713,039 Depreciation and amortization 66,680 603,124 784,683 14,198 1,468,685 — 1,468,685 Capital expenditures 74,024 525,419 2,041,735 16,074 2,657,252 — 2,657,252 Impairment losses on non-financial 1,404 32,674 12,716 14 46,808 — 46,808 Provision for credit and lease residual losses on receivables from financial services — — 34,720 — 34,720 — 34,720 As of and for the year ended March 31, 2020 Yen (millions) Motorcycle Automobile Financial Life Segment Reconciling Consolidated Sales revenue: External customers ¥ 2,059,335 ¥ 9,959,080 ¥ 2,586,965 ¥ 325,629 ¥ 14,931,009 ¥ — ¥ 14,931,009 Intersegment — 235,558 13,972 25,025 274,555 (274,555 ) — Total 2,059,335 10,194,638 2,600,937 350,654 15,205,564 (274,555 ) 14,931,009 Segment profit (loss) ¥ 285,668 ¥ 153,323 ¥ 219,704 ¥ (25,058 ) ¥ 633,637 ¥ — ¥ 633,637 Share of profit of investments accounted for using the equity method ¥ 34,526 ¥ 129,114 ¥ — ¥ 563 ¥ 164,203 ¥ — ¥ 164,203 Segment assets 1,483,888 7,821,499 10,282,136 354,472 19,941,995 519,470 20,461,465 Investments accounted for using the equity method 83,144 566,582 — 5,749 655,475 — 655,475 Depreciation and amortization 67,512 555,153 823,996 14,742 1,461,403 — 1,461,403 Capital expenditures 93,871 498,260 2,248,597 17,611 2,858,339 — 2,858,339 Impairment losses on non-financial 345 57,817 36,039 15 94,216 — 94,216 Provision for credit and lease residual losses on receivables from financial services — — 56,894 — 56,894 — 56,894 Explanatory notes: 1. Segment profit (loss) of each segment is measured in a consistent manner with consolidated operating profit, which is profit before income taxes before share of profit of investments accounted for using the equity method and finance income and finance costs. Expenses not directly associated with specific segments are allocated based on the most reasonable measures applicable. 2. Segment assets of each segment are defined as total assets including investments accounted for using the equity method, derivatives, and deferred tax assets. Segment assets are based on those directly associated with each segment and those not directly associated with specific segments are allocated based on the most reasonable measures applicable except for the corporate assets described below. 3. Intersegment sales revenues are generally made at values that approximate arm’s-length 4. Reconciling items include elimination of intersegment transactions and balances as well as unallocated corporate assets. Unallocated corporate assets, included in reconciling items as of March 31, 2018, 2019 and 2020 amounted to ¥519,780 million, ¥682,842 million and ¥787,022 million, respectively, which consist primarily of the Company’s cash and cash equivalents and financial assets measured at fair value through other comprehensive income. 5. Provisions for product warranties accrued for the years ended March 31, 2018, 2019 and 2020 are ¥219,575 million, ¥247,194 million and ¥21 2 275 6. The amounts of write-down of inventories recognized as an expense for the years ended March 31, 2018, 2019 and 2020 are ¥67,768 million, ¥32,565 million and ¥37,752 million respectively. These are related to Automobile business and aircraft and aircraft engines, which are included in Life creation and other businesses. (b) Product or Service Groups Information Sales revenue by product or service groups of Honda for the years ended March 31, 2018, 2019 and 2020 is as follows: Yen (millions) 2018 2019 2020 Motorcycles and relevant parts ¥ 1,919,232 ¥ 1,986,968 ¥ 1,921,065 All-terrain side-by-sides 119,480 113,187 138,270 Automobiles and relevant parts 11,813,125 12,173,065 11,199,477 Financial services 1,162,240 1,264,407 1,346,568 Power products and relevant parts 266,233 266,012 243,251 Others 80,836 84,978 82,378 Total ¥ 15,361,146 ¥ 15,888,617 ¥ 14,931,009 (c) Geographical Information The sales revenue and carrying amounts of non-current As of and for the year ended March 31, 2018 Yen (millions) Japan United States Other Countries Total Sales revenue ¥ 2,240,033 ¥ 7,028,633 ¥ 6,092,480 ¥ 15,361,146 Non-current ¥ 2,580,515 ¥ 3,784,531 ¥ 1,696,056 ¥ 8,061,102 As of and for the year ended March 31, 2019 Yen (millions) Japan United States Other Countries Total Sales revenue ¥ 2,394,584 ¥ 7,480,382 ¥ 6,013,651 ¥ 15,888,617 Non-current ¥ 2,695,603 ¥ 3,956,228 ¥ 1,685,874 ¥ 8,337,705 As of and for the year ended March 31, 2020 Yen (millions) Japan United States Other Countries Total Sales revenue ¥ 2,307,523 ¥ 7,091,136 ¥ 5,532,350 ¥ 14,931,009 Non-current ¥ 3,003,416 ¥ 4,007,268 ¥ 1,573,982 ¥ 8,584,666 (d) Supplemental Geographical Information In addition to the disclosure required by IFRS, Honda provides the following supplemental information for the financial statements users: Supplemental geographical information based on the location of the Company and its subsidiaries As of and for the year ended March 31, 2018 Yen (millions) Japan North America Europe Asia Other Regions Total Reconciling Items Consolidated Sales revenue: External customers ¥ 2,240,033 ¥ 8,067,455 ¥ 680,497 ¥ 3,541,680 ¥ 831,481 ¥ 15,361,146 ¥ — ¥ 15,361,146 Inter-geographic areas 2,240,651 517,150 236,717 679,340 6,043 3,679,901 (3,679,901 ) — Total 4,480,684 8,584,605 917,214 4,221,020 837,524 19,041,047 (3,679,901 ) 15,361,146 Operating profit (loss) ¥ 86,916 ¥ 278,476 ¥ 15,837 ¥ 402,620 ¥ 43,831 ¥ 827,680 ¥ 5,878 ¥ 833,558 Assets ¥ 4,405,523 ¥ 10,651,191 ¥ 727,045 ¥ 2,942,053 ¥ 659,781 ¥ 19,385,593 ¥ (36,429 ) ¥ 19,349,164 Non-current ¥ 2,580,515 ¥ 4,530,019 ¥ 105,649 ¥ 683,006 ¥ 161,913 ¥ 8,061,102 ¥ — ¥ 8,061,102 As of and for the year ended March 31, 2019 Yen (millions) Japan North America Europe Asia Other Regions Total Reconciling Items Consolidated Sales revenue: External customers ¥ 2,394,584 ¥ 8,526,733 ¥ 652,335 ¥ 3,557,338 ¥ 757,627 ¥ 15,888,617 ¥ — ¥ 15,888,617 Inter-geographic areas 2,453,729 497,231 275,089 714,901 6,826 3,947,776 (3,947,776 ) — Total 4,848,313 9,023,964 927,424 4,272,239 764,453 19,836,393 (3,947,776 ) 15,888,617 Operating profit (loss) ¥ 10 ¥ 299,750 ¥ (6,620 ) ¥ 404,220 ¥ 22,616 ¥ 719,976 ¥ 6,394 ¥ 726,370 Assets ¥ 4,546,640 ¥ 11,418,194 ¥ 694,606 ¥ 3,024,357 ¥ 621,259 ¥ 20,305,056 ¥ 114,066 ¥ 20,419,122 Non-current ¥ 2,695,603 ¥ 4,740,675 ¥ 65,500 ¥ 691,211 ¥ 144,716 ¥ 8,337,705 ¥ — ¥ 8,337,705 As of and for the year ended March 31, 2020 Yen (millions) Japan North Europe Asia Other Total Reconciling Consolidated Sales revenue: External customers ¥ 2,307,523 ¥ 8,167,345 ¥ 561,856 ¥ 3,207,470 ¥ 686,815 ¥ 14,931,009 ¥ — ¥ 14,931,009 Inter-geographic areas 2,115,411 389,474 210,713 652,231 6,825 3,374,654 (3,374,654 ) — Total 4,422,934 8,556,819 772,569 3,859,701 693,640 18,305,663 (3,374,654 ) 14,931,009 Operating profit (loss) ¥ (28,162 ) ¥ 305,315 ¥ 14,996 ¥ 319,565 ¥ 37,289 ¥ 649,003 ¥ (15,366 ) ¥ 633,637 Assets ¥ 4,889,920 ¥ 11,375,801 ¥ 689,158 ¥ 2,851,027 ¥ 518,445 ¥ 20,324,351 ¥ 137,114 ¥ 20,461,465 Non-current ¥ 3,003,416 ¥ 4,755,072 ¥ 58,735 ¥ 658,397 ¥ 109,046 ¥ 8,584,666 ¥ — ¥ 8,584,666 Explanatory notes: 1. Major countries in each geographic area: North America United States, Canada, Mexico Europe United Kingdom, Germany, Belgium, Italy, France Asia Thailand, Indonesia, China, India, Vietnam Other Regions Brazil, Australia 2. Operating profit (loss) of each geographical region is measured in a consistent manner with consolidated operating profit, which is profit before income taxes before share of profit of investments accounted for using the equity method and finance income and finance costs. 3. Assets of each geographical region are defined as total assets including investments accounted for using the equity method, derivatives, and deferred tax assets. 4. Sales revenues between geographic areas are generally made at values that approximate arm’s-length 5. Reconciling items include elimination of inter-geographic transactions and balances as well as unallocated corporate assets. Unallocated corporate assets, included in reconciling items as of March 31, 2018, 2019 and 2020 amounted to ¥519,780 million, ¥682,842 million and ¥787,022 million, respectively, which consist primarily of the Company’s cash and cash equivalents and financial assets measured at fair value through other comprehensive income. (e) Others Impact to Europe related to changes of the global automobile production network and capability In February 2019, the Company announced making changes throughout the global automobile production network based on the direction to optimize production allocation and production capacity on a global basis. As a part of the changes, the Company announced mainly to begin consultation with employees in the direction toward discontinuing automobile production at its certain subsidiaries in Europe in 2021. The Company and its certain subsidiaries recognized ¥68,092 million of losses including an impairment loss on property, plant and equipment, employee benefits and other expenses. Of the total loss and expenses, ¥56,590 million is included in cost of sales and ¥11,502 million is included in selling, general and administrative in the consolidated statements of income for the year ended March 31, 2019.

Cash and Cash Equivalents

Cash and Cash Equivalents	12 Months Ended
	Mar. 31, 2020
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Cash and Cash Equivalents	(5) Cash and Cash Equivalents Cash and cash equivalents as of March 31, 2019 and 2020 consist of the following: Yen (millions) 2019 2020 Cash and deposits ¥ 1,815,920 ¥ 2,017,247 Cash equivalents 678,201 655,106 Total ¥ 2,494,121 ¥ 2,672,353 Cash equivalents held by Honda mainly consist of money market funds and certificates of deposit.

Trade Receivables

Trade Receivables	12 Months Ended
	Mar. 31, 2020
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Trade Receivables	(6) Trade Receivables Trade receivables are classified as financial assets measured at amortized cost. Trade receivables as of March 31, 2019 and 2020 consist of the following: Yen (millions) 2019 2020 Trade accounts and notes receivable ¥ 712,180 ¥ 526,403 Other 93,620 118,808 Allowance for impairment losses (12,555 ) (11,302 ) Total ¥ 793,245 ¥ 633,909 The changes in the allowance for impairment losses on trade receivables for the years ended March 31, 2018, 2019 and 2020 are as follows: Yen (millions) 2018 2019 2020 Balance at beginning of year ¥ 14,510 ¥ 14,389 ¥ 12,555 Remeasurement ¥ 858 ¥ 251 ¥ 589 Write-offs (706 ) (1,590 ) (971 ) Exchange differences on translating foreign operations (273 ) (495 ) (871 ) Balance at end of year ¥ 14,389 ¥ 12,555 ¥ 11,302 Comparative amounts for the year ended March 31, 2018 represent the allowance for impairment losses under IFRS 9 (2013). The allowance for impairment losses on trade receivables for the years ended March 31, 2019 and 2020 are continuously measured at amounts equal to the lifetime expected credit losses.

Receivables from Financial Serv

Receivables from Financial Services	12 Months Ended
	Mar. 31, 2020
Text block [abstract]
Receivables from Financial Services	(7) Receivables from Financial Services The finance subsidiaries of the Company provide various financial services to customers and dealers in order to support the sale of products. These receivables from financial services are categorized as follows: Consumer finance receivables: Retail receivables primarily consist of receivables from installment contracts with customers. Finance lease receivables primarily consist of receivables from non-cancelable Dealer finance receivables: Wholesale receivables primarily consist of financing receivables from dealers for the purchase of inventories and dealer loans. Receivables from financial services are mainly classified into financial assets measured at amortized cost. Receivables from financial services as of March 31, 2019 and 2020 consist of the following: Yen (millions) 2019 2020 Consumer finance receivables: Retail ¥ 4,602,848 ¥ 4,440,364 Finance lease 142,855 125,958 Dealer finance receivables: Wholesale 712,214 666,992 Subtotal ¥ 5,457,917 ¥ 5,233,314 Allowance for credit losses ¥ (43,203 ) ¥ (63,468 ) Allowance for losses on lease residual values (29 ) — Unearned interest income and fees (9,435 ) (8,681 ) Total ¥ 5,405,250 ¥ 5,161,165 Current assets ¥ 1,951,633 ¥ 1,878,358 Non-current 3,453,617 3,282,807 Total ¥ 5,405,250 ¥ 5,161,165 Finance lease receivables The gross investment in the lease and the present value of minimum lease payments receivable as of March 31, 2019 is as follows: Yen (millions) As of March 31, 2019 Gross Unearned interest Unguaranteed Present value of Within 1 year ¥ 52,099 ¥ (1,632 ) ¥ (25,369 ) ¥ 25,098 Between 1 and 5 years 90,658 (7,790 ) (46,662 ) 36,206 Later than 5 years 98 (13 ) — 85 Total ¥ 142,855 ¥ (9,435 ) ¥ (72,031 ) ¥ 61,389 The lease payments receivable under the finance leases by maturity as of March 31, 2020 is as follows: Yen (millions) 2020 Within 1 year ¥ 22,808 Between 1 and 2 years 20,578 Between 2 and 3 years 13,370 Between 3 and 4 years 6,097 Between 4 and 5 years 1,359 Later than 5 years 77 Undiscounted lease payments receivable ¥ 64,289 Unearned finance income ¥ (4,091 ) Unguaranteed residual value ¥ 57,079 Net investment in the lease ¥ 117,277 For the nature of the lessor’s leasing activities and the risk management strategy, see note 3(i) and (j). Allowance for credit losses The changes in the allowance for credit losses on receivables from financial services for the years ended March 31, 2018, 2019 and 2020 are as follows: For the year ended March 31, 2018 Yen (millions) Retail Finance lease Wholesale Total Balance as of April 1, 2017 ¥ 28,867 ¥ 809 ¥ 1,823 ¥ 31,499 Provision ¥ 36,037 ¥ 214 ¥ 336 ¥ 36,587 Write-offs (39,478 ) (299 ) (271 ) (40,048 ) Recoveries 8,368 50 13 8,431 Exchange differences on translating foreign operations (1,718 ) 47 5 (1,666 ) Balance as of March 31, 2018 ¥ 32,076 ¥ 821 ¥ 1,906 ¥ 34,803 For the years ended March 31, 2019 and 2020 Yen (millions) 12-month ECL Lifetime ECL Total Not credit-impaired Credit-impaired Retail: Balance as of April 1, 2018 under IFRS 9 (2013) ¥ 32,076 Effect of adopting IFRS 9 (2014) ¥ 4,599 Balance as of April 1, 2018 under IFRS 9 (2014) ¥ 20,574 ¥ 9,543 ¥ 6,558 ¥ 36,675 Remeasurement ¥ 1,788 ¥ 579 ¥ 31,506 ¥ 33,873 Write-offs — — (30,986 ) (30,986 ) Exchange differences on translating foreign operations 250 285 (337 ) 198 Balance as of March 31, 2019 ¥ 22,612 ¥ 10,407 ¥ 6,741 ¥ 39,760 Remeasurement ¥ 5,547 ¥ 16,637 ¥ 32,649 ¥ 54,833 Write-offs — — (31,436 ) (31,436 ) Exchange differences on translating foreign operations (1,504 ) (412 ) (1,000 ) (2,916 ) Balance as of March 31, 2020 ¥ 26,655 ¥ 26,632 ¥ 6,954 ¥ 60,241 Finance lease: Balance as of April 1, 2018 under IFRS 9 (2013) ¥ 821 Effect of adopting IFRS 9 (2014) ¥ — Balance as of April 1, 2018 under IFRS 9 (2014) ¥ 604 ¥ 78 ¥ 139 ¥ 821 Remeasurement ¥ (19 ) ¥ (3 ) ¥ 114 ¥ 92 Write-offs — — (125 ) (125 ) Exchange differences on translating foreign operations (51 ) (3 ) (4 ) (58 ) Balance as of March 31, 2019 ¥ 534 ¥ 72 ¥ 124 ¥ 730 Remeasurement ¥ (15 ) ¥ 29 ¥ 128 ¥ 142 Write-offs — — (130 ) (130 ) Exchange differences on translating foreign operations (38 ) (5 ) (9 ) (52 ) Balance as of March 31, 2020 ¥ 481 ¥ 96 ¥ 113 ¥ 690 Yen (millions) 12-month ECL Lifetime ECL Total Not credit-impaired Credit-impaired Wholesale: Balance as of April 1, 2018 under IFRS 9 (2013) ¥ 1,906 Effect of adopting IFRS 9 (2014) ¥ — Balance as of April 1, 2018 under IFRS 9 (2014) ¥ 1,553 ¥ 309 ¥ 44 ¥ 1,906 Remeasurement ¥ (49 ) ¥ 35 ¥ 769 ¥ 755 Write-offs — — 153 153 Exchange differences on translating foreign operations (85 ) (15 ) (1 ) (101 ) Balance as of March 31, 2019 ¥ 1,419 ¥ 329 ¥ 965 ¥ 2,713 Remeasurement ¥ 127 ¥ 2 ¥ 1,776 ¥ 1,905 Write-offs — — (1,784 ) (1,784 ) Exchange differences on translating foreign operations (109 ) (13 ) (175 ) (297 ) Balance as of March 31, 2020 ¥ 1,437 ¥ 318 ¥ 782 ¥ 2,537 Total: Balance as of April 1, 2018 under IFRS 9 (2013) ¥ 34,803 Effect of adopting IFRS 9 (2014) ¥ 4,599 Balance as of April 1, 2018 under IFRS 9 (2014) ¥ 22,731 ¥ 9,930 ¥ 6,741 ¥ 39,402 Remeasurement ¥ 1,720 ¥ 611 ¥ 32,389 ¥ 34,720 Write-offs — — (30,958 ) (30,958 ) Exchange differences on translating foreign operations 114 267 (342 ) 39 Balance as of March 31, 2019 ¥ 24,565 ¥ 10,808 ¥ 7,830 ¥ 43,203 Remeasurement ¥ 5,659 ¥ 16,668 ¥ 34,553 ¥ 56,880 Write-offs — — (33,350 ) (33,350 ) Exchange differences on translating foreign operations (1,651 ) (430 ) (1,184 ) (3,265 ) Balance as of March 31, 2020 ¥ 28,573 ¥ 27,046 ¥ 7,849 ¥ 63,468 Comparative amounts for the year ended March 31, 2018 represent the allowance for credit losses under IFRS 9 (2013). For more information on allowance for credit losses, see note 25(c).

Other Financial Assets

Other Financial Assets	12 Months Ended
	Mar. 31, 2020
Text block [abstract]
Other Financial Assets	(8) Other Financial Assets Other financial assets as of March 31, 2019 and 2020 consist of the following: Yen (millions) 2019 2020 Financial assets measured at amortized cost: Receivables other than trade receivables and receivables from ¥ 118,256 ¥ 144,554 Debt securities 54,964 62,204 Guaranty deposits 13,098 12,266 Restricted cash 66,555 64,152 Other 9,776 10,743 Allowance for impairment losses (4,233 ) (3,364 ) Financial assets measured at fair value through other comprehensive income: Debt securities 10,495 9,069 Equity securities 207,035 178,001 Financial assets measured at fair value through profit or loss: Derivatives 46,397 95,804 Debt securities 58,080 58,348 Total ¥ 580,423 ¥ 631,777 Current assets ¥ 163,274 ¥ 190,053 Non-current 417,149 441,724 Total ¥ 580,423 ¥ 631,777 The changes in the allowance for impairment losses on other financial assets for the years ended March 31, 2018, 2019 and 2020 are as follows: Yen (millions) 2018 2019 2020 Balance at beginning of year ¥ 10,964 ¥ 10,145 ¥ 4,233 Remeasurement ¥ 343 ¥ 284 ¥ 600 Write-offs (1,179 ) (6,194 ) (1,463 ) Exchange differences on translating foreign operations 17 (2 ) (6 ) Balance at end of year ¥ 10,145 ¥ 4,233 ¥ 3,364 Comparative amounts for the year ended March 31, 2018 represent the allowance for impairment losses under IFRS 9 (2013). The allowance for impairment losses on other financial assets for the years ended March 31, 2019 and 2020 are mainly for credit-impaired financial assets. Major securities included in the equity securities designated as financial assets measured at fair value through other comprehensive income as of March 31, 2019 and 2020 are as follows: As of March 31, 2019 Yen (millions) Fair value GM Cruise Holdings LLC ¥ 83,242 Stanley Electric Co., Ltd. 27,475 Mitsubishi UFJ Financial Group, Inc. 7,976 NIPPON SEIKI CO., LTD. 6,714 NIKKON Holdings Co., Ltd. 6,414 Tokio Marine Holdings, Inc. 5,859 As of March 31, 2020 Yen (millions) Fair value GM Cruise Holdings LLC ¥ 85,649 Stanley Electric Co., Ltd. 19,690 Mitsubishi UFJ Financial Group, Inc. 5,844 Tokio Marine Holdings, Inc. 5,409 NIKKON Holdings Co., Ltd. 5,184 Daido Steel Co., Ltd. 4,542 Honda sells (derecognizes) the equity securities designated as financial assets measured at fair value through other comprehensive income to improve efficiency and effectiveness in the utilization of resources. The fair values at the date of derecognition and cumulative net gains or losses recognized in other comprehensive income in equity for the years ended March 31, 2018, 2019 and 2020 are as follows: Yen (millions) 2018 2019 2020 Fair value ¥ 431 ¥ 61,038 ¥ 33 Cumulative net gain or loss ¥ 302 ¥ 39,382 ¥ (23 )

Inventories

Inventories	12 Months Ended
	Mar. 31, 2020
Text block [abstract]
Inventories	(9) Inventories Inventories as of March 31, 2019 and 2020 consist of the following: Yen (millions) 2019 2020 Finished goods ¥ 973,797 ¥ 909,076 Work in process 78,006 76,264 Raw materials 534,984 575,228 Total ¥ 1,586,787 ¥ 1,560,568 The amounts of write-down of inventories recognized as an expense for the years ended March 31, 2018, 2019 and 2020 are ¥67,768 million, ¥32,565 million and ¥37,752 million, respectively.

Investments Accounted for Using

Investments Accounted for Using the Equity Method	12 Months Ended
	Mar. 31, 2020
Text block [abstract]
Investments Accounted for Using the Equity Method	(10) Investments accounted for using the equity method Honda’s equity in affiliates and joint ventures as of March 31, 2019 and 2020 is as follows: Yen (millions) 2019 2020 Investments accounted for using the equity method: Affiliates ¥ 382,706 ¥ 378,012 Joint ventures 330,333 277,463 Total ¥ 713,039 ¥ 655,475 Honda’s equity of undistributed earnings: Affiliates ¥ 294,532 ¥ 293,489 Joint ventures 249,284 222,061 Total ¥ 543,816 ¥ 515,550 For the year ended March 31, 2018, the Company recognized reversal of impairment losses of ¥15,782 million, which had been previously recognized, on certain investments accounted for using the equity method mainly due to the recovery of quoted market values. The reversal of impairment losses is included in share of profit of investments accounted for using the equity method in the consolidated statements of income and mainly included in the automobile business segment. For the years ended March 31, 2019 and 2020, the Company did not recognize any significant reversal of impairment losses. Honda’s share of comprehensive income of affiliates and joint ventures for the years ended March 31, 2018, 2019 and 2020 is as follows: Yen (millions) 2018 2019 2020 Profit for the year: Affiliates ¥ 45,501 ¥ 43,137 ¥ (434 ) Joint ventures 202,142 185,690 164,637 Total ¥ 247,643 ¥ 228,827 ¥ 164,203 Other comprehensive income: Affiliates ¥ 4,983 ¥ (13,150 ) ¥ (5,758 ) Joint ventures 7,325 (8,534 ) (26,185 ) Total ¥ 12,308 ¥ (21,684 ) ¥ (31,943 ) Comprehensive income for the year: Affiliates ¥ 50,484 ¥ 29,987 ¥ (6,192 ) Joint ventures 209,467 177,156 138,452 Total ¥ 259,951 ¥ 207,143 ¥ 132,260 Investments accounted for using the equity method, Honda’s equity of undistributed earnings, profit for the year, other comprehensive income and comprehensive income for the year items include a joint venture that is material to the Company. (Material joint venture) Dongfeng Honda Automobile Co., Ltd. is a joint venture that is material to the Company. Dongfeng Honda Automobile Co., Ltd., located in Wuhan City, China, manufactures and sells automobile products. Honda and Dongfeng Motor Corporation each holds 50% equity stake in Dongfeng Honda Automobile Co., Ltd. Summarized financial information of Dongfeng Honda Automobile Co., Ltd. as of March 31, 2019 and 2020 is as follows: Yen (millions) 2019 2020 Current assets ¥ 513,364 ¥ 347,462 Non-current 195,806 196,439 Total assets 709,170 543,901 Current liabilities 369,119 316,519 Non-current 42,264 28,229 Total liabilities 411,383 344,748 Total equity ¥ 297,787 ¥ 199,153 Honda’s share of total equity (50%) 148,893 99,577 Equity method adjustments (1,310 ) (1,204 ) Carrying amount of its interest in the joint venture ¥ 147,583 ¥ 98,373 Cash and cash equivalents included in current assets ¥ 201,698 ¥ 246,736 Financial liabilities (excluding trade payables and provisions) included in current liabilities 4,628 67,414 Summarized financial information of Dongfeng Honda Automobile Co., Ltd. for the years ended March 31, 2018, 2019 and 2020 is as follows: Yen (millions) 2018 2019 2020 Sales revenue ¥ 1,695,603 ¥ 1,696,651 ¥ 1,516,160 Interest income 8,998 6,190 8,019 Depreciation and amortization 16,001 16,091 18,870 Income tax expense 60,295 58,504 48,622 Profit for the year 185,604 176,787 130,327 Other comprehensive income 11,586 (8,354 ) (21,100 ) Comprehensive income for the year ¥ 197,190 ¥ 168,433 ¥ 109,227 Comprehensive income for the year (50%) 98,595 84,217 54,614 Equity method adjustments 842 56 53 Honda’s share of comprehensive income for the year ¥ 99,437 ¥ 84,273 ¥ 54,667 Dividend from the joint venture to Honda ¥ 75,407 ¥ 70,788 ¥ 72,760 Combined financial information in respect of affiliates as of March 31, 2019 and 2020, and for the years ended March 31, 2018, 2019 and 2020 is as follows: Yen (millions) For the year ended March 31, 2018 Motorcycle Automobile Life Creation Total Sales revenue ¥ 168,229 ¥ 2,589,380 ¥ 6,777 ¥ 2,764,386 Profit for the year 11,115 99,119 1,001 111,235 Yen (millions) As of and for the year ended March 31, 2019 Motorcycle Automobile Life Creation Total Current assets ¥ 53,449 ¥ 1,143,390 ¥ 8,897 ¥ 1,205,736 Non-current 31,464 1,069,087 22,821 1,123,372 Total assets 84,913 2,212,477 31,718 2,329,108 Current liabilities 24,307 594,494 2,751 621,552 Non-current 4,414 216,199 1,168 221,781 Total liabilities 28,721 810,693 3,919 843,333 Total equity ¥ 56,192 ¥ 1,401,784 ¥ 27,799 ¥ 1,485,775 Sales revenue ¥ 170,750 ¥ 2,657,023 ¥ 7,004 ¥ 2,834,777 Profit for the year 8,654 143,833 766 153,253 Yen (millions) As of and for the year ended March 31, 2020 Motorcycle Automobile Life Creation Total Current assets ¥ 49,706 ¥ 1,146,286 ¥ 10,010 ¥ 1,206,002 Non-current 28,071 1,083,789 21,565 1,133,425 Total assets 77,777 2,230,075 31,575 2,339,427 Current liabilities 21,337 587,533 2,681 611,551 Non-current 3,844 224,505 1,136 229,485 Total liabilities 25,181 812,038 3,817 841,036 Total equity ¥ 52,596 ¥ 1,418,037 ¥ 27,758 ¥ 1,498,391 Sales revenue ¥ 160,557 ¥ 2,505,819 ¥ 7,342 ¥ 2,673,718 Profit for the year 8,094 69,339 914 78,347 Combined financial information in respect of joint ventures as of March 31, 2019 and 2020, and for the years ended March 31, 2018, 2019 and 2020 is as follows: Yen (millions) For the year ended March 31, 2018 Motorcycle Automobile Life Creation Total Sales revenue ¥ 701,676 ¥ 3,835,476 ¥ 5,151 ¥ 4,542,303 Profit for the year 56,733 347,661 337 404,731 Yen (millions) As of and for the year ended March 31, 2019 Motorcycle Automobile Life Creation Total Current assets ¥ 210,818 ¥ 1,179,520 ¥ 3,112 ¥ 1,393,450 Non-current 119,749 377,019 683 497,451 Total assets 330,567 1,556,539 3,795 1,890,901 Current liabilities 192,951 929,071 1,039 1,123,061 Non-current 10,842 81,316 873 93,031 Total liabilities 203,793 1,010,387 1,912 1,216,092 Total equity ¥ 126,774 ¥ 546,152 ¥ 1,883 ¥ 674,809 Sales revenue ¥ 746,385 ¥ 3,819,913 ¥ 5,907 ¥ 4,572,205 Profit for the year 54,230 316,491 433 371,154 Yen (millions) As of and for the year ended March 31, 2020 Motorcycle Automobile Life Creation Total Current assets ¥ 201,170 ¥ 867,758 ¥ 3,592 ¥ 1,072,520 Non-current 114,106 373,274 661 488,041 Total assets 315,276 1,241,032 4,253 1,560,561 Current liabilities 181,772 766,635 1,190 949,597 Non-current 11,483 49,058 648 61,189 Total liabilities 193,255 815,693 1,838 1,010,786 Total equity ¥ 122,021 ¥ 425,339 ¥ 2,415 ¥ 549,775 Sales revenue ¥ 791,250 ¥ 3,483,024 ¥ 6,413 ¥ 4,280,687 Profit for the year 63,819 264,216 568 328,603 The amounts of a joint venture that is material to the Company are included in above.

Property, Plant and Equipment

Property, Plant and Equipment	12 Months Ended
	Mar. 31, 2020
Equipment on operating leases [member]
Statement [LineItems]
Property, Plant and Equipment	(11) Equipment on Operating Leases Equipment on operating leases are mainly vehicles. The changes in cost, accumulated depreciation and impairment losses, and the carrying amounts of equipment on operating leases for the years ended March 31, 2019 and 2020 are as follows: (Cost) Yen (millions) Balance as of April 1, 2018 ¥ 5,218,446 Additions ¥ 2,038,734 Sales or disposal (1,721,471 ) Exchange differences on translating foreign operations 164,802 Other — Balance as of March 31, 2019 ¥ 5,700,511 Additions ¥ 2,244,893 Sales or disposal (1,914,083 ) Exchange differences on translating foreign operations (127,747 ) Other — Balance as of March 31, 2020 ¥ 5,903,574 (Accumulated depreciation and impairment losses) Yen (millions) Balance as of April 1, 2018 ¥ (1,130,313 ) Depreciation ¥ (781,082 ) Sales or disposal 704,691 Exchange differences on translating foreign operations (32,242 ) Other (12,716 ) Balance as of March 31, 2019 ¥ (1,251,662 ) Depreciation ¥ (819,705 ) Sales or disposal 801,133 Exchange differences on translating foreign operations 28,760 Other (36,037 ) Balance as of March 31, 2020 ¥ (1,277,511 ) (Carrying amount) Yen (millions) Balance as of March 31, 2019 ¥ 4,448,849 Balance as of March 31, 2020 4,626,063 (Future minimum lease payments) Future minimum lease payments expected to be received under non-cancelable Yen (millions) 2019 Within 1 year ¥ 736,650 Between 1 and 5 years 897,789 Later than 5 years — Total ¥ 1,634,439 Future minimum lease payments expected to be received as shown above should not necessarily be considered indicative of future cash collections. (Future lease payments) Future lease payments expected to be received under the operating leases by maturity as of March 31, 2020 consist of the following: Yen (millions) 2020 Within 1 year ¥ 784,148 Between 1 and 2 years 577,856 Between 2 and 3 years 274,122 Between 3 and 4 years 91,320 Between 4 and 5 years 27,421 Later than 5 years — Total ¥ 1,754,867 Future lease payments expected to be received as shown above should not necessarily be considered indicative of future cash collections. (Lease income) Operating leases income for the year ended March 31, 2020 is ¥1,062,879 million.
Property, plant and equipment [member]
Statement [LineItems]
Property, Plant and Equipment	(12) Property, Plant and Equipment The changes in cost, accumulated depreciation and impairment losses, and the carrying amounts of property, plant and equipment for the years ended March 31, 2019 and 2020 are as follows: (Cost) Yen (millions) Land Buildings and Machinery and Construction in Total Balance as of April 1, 2018 ¥ 545,192 ¥ 2,248,793 ¥ 5,380,505 ¥ 192,559 ¥ 8,367,049 Additions ¥ 304 ¥ 10,399 ¥ 174,686 ¥ 281,268 ¥ 466,657 Reclassification 2,421 64,101 194,365 (260,887 ) — Sales or disposal (1,469 ) (11,432 ) (294,761 ) — (307,662 ) Exchange differences on translating foreign operations 307 15,931 63,898 2,647 82,783 Other 128 (269 ) (3,710 ) (1,618 ) (5,469 ) Balance as of March 31, 2019 ¥ 546,883 ¥ 2,327,523 ¥ 5,514,983 ¥ 213,969 ¥ 8,603,358 Effect of adopting IFRS 16 76,774 139,914 41,666 — 258,354 Balance as of April 1, 2019 under IFRS 16 623,657 2,467,437 5,556,649 213,969 8,861,712 Additions 7,519 28,933 125,151 293,566 455,169 Reclassification 87 59,861 215,358 (275,306 ) — Sales or disposal (6,896 ) (19,531 ) (231,388 ) — (257,815 ) Exchange differences on translating foreign operations (7,860 ) (59,431 ) (192,632 ) (9,717 ) (269,640 ) Other (820 ) (9,075 ) (31,325 ) (239 ) (41,459 ) Balance as of March 31, 2020 ¥ 615,687 ¥ 2,468,194 ¥ 5,441,813 ¥ 222,273 ¥ 8,747,967 (Accumulated depreciation and impairment losses) Yen (millions) Land Buildings and Machinery and Construction in Total Balance as of April 1, 2018 ¥ (4,179 ) ¥ (1,270,762 ) ¥ (4,027,490 ) ¥ (2,185 ) ¥ (5,304,616 ) Depreciation ¥ — ¥ (74,391 ) ¥ (424,645 ) ¥ — ¥ (499,036 ) Impairment losses (1,052 ) (6,077 ) (17,944 ) (1,975 ) (27,048 ) Sales or disposal 22 9,665 254,802 — 264,489 Exchange differences on translating foreign operations 9 (9,266 ) (51,094 ) 23 (60,328 ) Other 636 449 3,936 — 5,021 Balance as of March 31, 2019 ¥ (4,564 ) ¥ (1,350,382 ) ¥ (4,262,435 ) ¥ (4,137 ) ¥ (5,621,518 ) Effect of adopting IFRS 16 — — — — — Balance as of April 1, 2019 under IFRS 16 ¥ (4,564 ) ¥ (1,350,382 ) ¥ (4,262,435 ) ¥ (4,137 ) ¥ (5,621,518 ) Depreciation (6,218 ) (88,565 ) (375,537 ) — (470,320 ) Sales or disposal 860 12,673 198,448 — 211,981 Exchange differences on translating foreign operations 156 28,116 144,226 153 172,651 Other (751 ) 3,176 6,369 2,149 10,943 Balance as of March 31, 2020 ¥ (10,517 ) ¥ (1,394,982 ) ¥ (4,288,929 ) ¥ (1,835 ) ¥ (5,696,263 ) (Carrying amount) Yen (millions) Land Buildings and Machinery and Construction in Total Balance as of March 31, 2019 ¥ 542,319 ¥ 977,141 ¥ 1,252,548 ¥ 209,832 ¥ 2,981,840 Balance as of March 31, 2020 605,170 1,073,212 1,152,884 220,438 3,051,704 For commitments for purchases of property, plant and equipment, see note 28. (Right-of-use Property, plant and equipment in the consolidated statements of financial position include the right-of-use Honda leases mainly dealer’s stores, company housing and parking lots, under arrangements that often contain extension and termination options. Since lease contracts are managed at each company and individually negotiated, the lease contracts include various terms. Extension and termination options are included mainly in order to enhance operational flexibly of each company. The changes in the carrying amounts of the right-of-use Yen (millions) Land Buildings and Machinery and Total Balance as of April 1, 2019 ¥ 81,363 ¥ 142,598 ¥ 95,707 ¥ 319,668 Additions 6,263 19,988 53,276 79,527 Depreciation (6,218 ) (14,755 ) (52,437 ) (73,410 ) Other (3,492 ) (5,310 ) (10,941 ) (19,743 ) Balance as of March 31, 2020 ¥ 77,916 ¥ 142,521 ¥ 85,605 ¥ 306,042

Intangible Assets

Intangible Assets	12 Months Ended
	Mar. 31, 2020
Text block [abstract]
Intangible Assets	(13) Intangible Assets The changes in cost, accumulated amortization and impairment losses, and carrying amounts of intangible assets for the years ended March 31, 2019 and 2020 are as follows: (Cost) Yen (millions) Capitalized Software Other Total Balance as of April 1, 2018 ¥ 972,964 ¥ 355,163 ¥ 33,469 ¥ 1,361,596 Additions ¥ — ¥ 11,836 ¥ 3,956 ¥ 15,792 Internally developed 161,232 14,975 — 176,207 Sales or disposal (104,237 ) (5,082 ) (265 ) (109,584 ) Exchange differences on translating foreign 183 2,701 (1,067 ) 1,817 Other — (29 ) 2,195 2,166 Balance as of March 31, 2019 ¥ 1,030,142 ¥ 379,564 ¥ 38,288 ¥ 1,447,994 Additions ¥ — ¥ 14,971 ¥ 14,065 ¥ 29,036 Internally developed 192,397 16,370 — 208,767 Sales or disposal (136,575 ) (9,473 ) (826 ) (146,874 ) Exchange differences on translating foreign (2,439 ) (9,684 ) (2,329 ) (14,452 ) Other — 984 (3,008 ) (2,024 ) Balance as of March 31, 2020 ¥ 1,083,525 ¥ 392,732 ¥ 46,190 ¥ 1,522,447 (Accumulated amortization and impairment losses) Yen (millions) Capitalized Software Other Total Balance as of April 1, 2018 ¥ (374,443 ) ¥ (236,688 ) ¥ (8,951 ) ¥ (620,082 ) Amortization ¥ (148,100 ) ¥ (39,224 ) ¥ (1,243 ) ¥ (188,567 ) Sales or disposal 104,237 2,842 59 107,138 Exchange differences on translating foreign (9 ) (2,040 ) 222 (1,827 ) Other — 612 (900 ) (288 ) Balance as of March 31, 2019 ¥ (418,315 ) ¥ (274,498 ) ¥ (10,813 ) ¥ (703,626 ) Amortization ¥ (136,508 ) ¥ (33,199 ) ¥ (1,671 ) ¥ (171,378 ) Sales or disposal 136,575 7,870 159 144,604 Exchange differences on translating foreign 449 6,787 918 8,154 Other* (38,534 ) (316 ) (917 ) (39,767 ) Balance as of March 31, 2020 ¥ (456,333 ) ¥ (293,356 ) ¥ (12,324 ) ¥ (762,013 ) Explanatory note: * For certain capitalized development costs in progress related to Automobile business segment, the Company recognized the carrying amount in excess of recoverable amount as an expense in the consolidated statement of income for the year ended March 31, 2020. (Carrying amount) Yen (millions) Capitalized Software Other Total Balance as of March 31, 2019 ¥ 611,827 ¥ 105,066 ¥ 27,475 ¥ 744,368 Balance as of March 31, 2020 627,192 99,376 33,866 760,434 Amortization of capitalized development costs is included in research and development, and amortization of other intangible assets is included in cost of sales, selling, general and administrative, and research and development in the consolidated statements of income. For commitments for purchases of intangible assets, see note 28.

Trade Payables

Trade Payables	12 Months Ended
	Mar. 31, 2020
Text block [abstract]
Trade Payables	(14) Trade Payables Trade payables are classified as financial liabilities measured at amortized cost. Trade payables as of March 31, 2019 and 2020 consist of the following: Yen (millions) 2019 2020 Trade accounts and notes payable ¥ 1,056,065 ¥ 844,183 Other 128,817 114,286 Total ¥ 1,184,882 ¥ 958,469

Financing Liabilities

Financing Liabilities	12 Months Ended
	Mar. 31, 2020
Text block [abstract]
Financing Liabilities	(15) Financing Liabilities Financing liabilities are classified as financial liabilities measured at amortized cost. Financing liabilities presented in current liabilities as of March 31, 2019 and 2020 consist of the following: Yen (millions) 2019 2020 Current: Commercial paper ¥ 943,905 ¥ 976,606 Loans 366,620 355,667 Medium-term notes 122,080 32,647 Asset-backed securities 41,019 59,747 Subtotal ¥ 1,473,624 ¥ 1,424,667 Reclassification from non-current ¥ 1,715,158 ¥ 1,823,790 Total ¥ 3,188,782 ¥ 3,248,457 The weighted average interest rates for financing liabilities presented in current liabilities (excluding reclassification from non-current 2019 2020 Weighted average interest rate 1.85 % 1.21 % Financing liabilities presented in non-current Yen (millions) 2019 2020 Non-current: Loans ¥ 1,235,791 ¥ 1,204,588 Medium-term notes 3,151,868 3,169,407 Corporate bonds 444,517 599,426 Asset-backed securities 1,025,320 1,071,598 Subtotal ¥ 5,857,496 ¥ 6,045,019 Reclassification to current liabilities (Current portion) ¥ (1,715,158 ) ¥ (1,823,790 ) Total ¥ 4,142,338 ¥ 4,221,229 The interest rate range and payment due date for financing liabilities presented in non-current 2019 2020 Loans Interest rate: 0.10% - 10.50% Due: 2019 - 2046 Interest rate: 0.07% - 11.00% Due: 2020 - 2046 Medium-term notes Interest rate: 0.35% - 3.88% Due: 2019 - 2028 Interest rate: 0.35% - 3.88% Due: 2020 - 2028 Corporate bonds Interest rate: 0.01% - 0.59% Due: 2019 - 2023 Interest rate: 0.01% - 1.17% Due: 2020 - 2027 Asset-backed securities Interest rate: 0.11% - 3.30% Due: 2019 - 2024 Interest rate: 0.11% - 3.30% Due: 2020 - 2024 (Pledged assets) Pledged assets for financing liabilities as of March 31, 2019 and 2020 are as follows: Yen (millions) 2019 2020 Trade receivables ¥ 26,286 ¥ 22,093 Receivables from financial services 1,134,489 1,140,583 Inventories 26,677 17,956 Equipment on operating leases — 81,501 Property, plant and equipment 55,139 1,478 Total ¥ 1,242,591 ¥ 1,263,611 Receivables from financial services and equipment on operating leases are pledged as collateral for liabilities related to asset-backed securities transactions. Other items are mainly pledged as collateral for secured bank loans. As is customary in Japan, bank loans are extended under general agreements which provide that security and guarantees for present and future indebtedness will be given upon request of the bank, and that the bank shall have the right to offset cash deposits against obligations that have become due or, in the event of default, against all obligations due to the bank. (Reconciliation of liabilities arising from financing activities) The changes in liabilities arising from financing activities for the years ended March 31, 2018, 2019 and 2020 are as follows: For the year ended March 31, 2018 Yen (millions) Balance Cash flows Cash flows Non-cash Balance Acquisitions Changes Changes Other Short-term financing liabilities ¥ 1,162,111 ¥ 101,885 ¥ — ¥ — ¥ (28,854 ) ¥ — ¥ 1,505 ¥ 1,236,647 Long-term financing liabilities 5,647,007 80,042 — — (169,403 ) — 4,717 5,562,363 Lease liabilities 69,364 (47,449 ) — 50,610 (468 ) — 566 72,623 Derivative financial liabilities (assets) *2 25,300 — (3,308 ) — (1,732 ) (36,466 ) — (16,206 ) Total ¥ 6,903,782 ¥ 134,478 ¥ (3,308 ) ¥ 50,610 ¥ (200,457 ) ¥ (36,466 ) ¥ 6,788 ¥ 6,855,427 For the year ended March 31, 2019 Yen (millions) Balance Cash flows Cash flows Non-cash Balance Acquisitions Changes Changes Other Short-term financing liabilities ¥ 1,236,647 ¥ 221,551 ¥ — ¥ — ¥ 14,568 ¥ — ¥ 858 ¥ 1,473,624 Long-term financing liabilities 5,562,363 174,160 — — 118,789 — 2,184 5,857,496 Lease liabilities 72,623 (47,106 ) — 37,028 (237 ) — — 62,308 Derivative financial liabilities (assets) *2 (16,206 ) 3,342 (9,187 ) — (859 ) 47,487 — 24,577 Total ¥ 6,855,427 ¥ 351,947 ¥ (9,187 ) ¥ 37,028 ¥ 132,261 ¥ 47,487 ¥ 3,042 ¥ 7,418,005 For the year ended March 31, 2020 Yen (millions) Balance Cash flows Cash flows Non-cash Balance Acquisitions Changes Changes Other Short-term financing liabilities ¥ 1,473,624 ¥ (1,993 ) ¥ — ¥ — ¥ (42,424 ) ¥ — ¥ (4,540 ) ¥ 1,424,667 Long-term financing liabilities 5,857,496 362,131 — — (170,345 ) — (4,263 ) 6,045,019 Lease liabilities *1 334,540 (78,659 ) — 78,923 (3,987 ) — (777 ) 330,040 Derivative financial liabilities (assets) *2 24,577 (17,462 ) (10,001 ) — (434 ) 14,935 — 11,615 Total ¥ 7,690,237 ¥ 264,017 ¥ (10,001 ) ¥ 78,923 ¥ (217,190 ) ¥ 14,935 ¥ (9,580 ) ¥ 7,811,341 Explanatory notes: *1 Honda has adopted IFRS 16 with a date of initial application of April 1, 2019 and recognized additional lease liabilities of ¥272,232 million as of April 1, 2019. For more details on the amount of the additional lease liabilities, see note “(2) Basis of Preparation (d) Changes in Accounting Policies.” *2 Derivative financial liabilities (assets) are held by the finance subsidiaries of the Company to hedge foreign currency risk for principals and interests payment of long-term financing liabilities. The cash flows related to repayments of principals are included in cash flows from financing activities, while the cash flows related to interest paid are included in cash flows from operating activities.

Other Financial Liabilities

Other Financial Liabilities	12 Months Ended
	Mar. 31, 2020
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Other Financial Liabilities	(16) Other Financial Liabilities Other financial liabilities as of March 31, 2019 and 2020 consist of the following: Yen (millions) 2019 2020 Financial liabilities measured at amortized cost ¥ 64,800 ¥ 67,427 Financial liabilities measured at fair value through profit or loss: Derivatives 69,491 115,168 Lease liabilities 62,308 330,040 Total ¥ 196,599 ¥ 512,635 Current liabilities ¥ 132,910 ¥ 209,065 Non-current 63,689 303,570 Total ¥ 196,599 ¥ 512,635

Provisions

Provisions	12 Months Ended
	Mar. 31, 2020
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Provisions	(17) Provisions The components of and changes in provisions for the year ended March 31, 2020 are as follows: Yen (millions) Product Other Total Balance as of April 1, 2019 ¥ 458,482 ¥ 111,026 ¥ 569,508 Provision ¥ 212,275 ¥ 72,075 ¥ 284,350 Write-offs (250,522 ) (22,497 ) (273,019 ) Reversal (26,843 ) (9,157 ) (36,000 ) Exchange differences on translating foreign operations (12,703 ) (6,522 ) (19,225 ) Balance as of March 31, 2020 ¥ 380,689 ¥ 144,925 ¥ 525,614 Current liabilities and non-current Yen (millions) 2019 2020 Current liabilities ¥ 348,763 ¥ 287,175 Non-current 220,745 238,439 Total ¥ 569,508 ¥ 525,614 Explanatory note: * Honda recognizes provisions for product warranties to cover future product warranty expenses. Honda recognizes costs for general warranties on products Honda sells and for specific warranty programs, including product recalls. Honda recognizes general estimated warranty costs at the time products are sold to customers. Honda also recognizes specific estimated warranty program costs when it is probable that an outflow of resources embodying economic benefits will be required to settle the obligation, and a reliable estimate can be made of the amount of the obligation. These provisions are estimated based on historical warranty claim experience with consideration given to the expected level of future warranty costs as well as current information on repair costs. Provision for product warranties are utilized for expenditures based on the demand from customers and dealers.

Employee Benefits

Employee Benefits	12 Months Ended
	Mar. 31, 2020
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Employee Benefits	(18) Employee Benefits (a) Post-employment Benefits Honda has various pension plans covering substantially all of their employees in Japan and certain employees in foreign countries. The Company and its Japanese subsidiaries provide plans similar to a cash balance pension plan or other defined benefit pension plans in accordance with the Defined-Benefit Corporate Pension Act of Japan. The Company and some of its subsidiaries have retirement pension benefit plans as well as lump-sum The Company’s pension plans are administered by the Honda Pension Fund (the Fund) which is legally independent of the Company. The Director of the Fund has the fiduciary duty to comply with laws, the directives by the Minister of Health, Labour and Welfare, and the Director-Generals of Regional Bureaus of Health and Welfare made pursuant to those laws, and the by-laws 1) Defined benefit obligations and plan assets The changes in present value of defined benefit obligations and fair value of plan assets of the Company and certain of its consolidated subsidiaries for the years ended March 31, 2019 and 2020 are as follows: Yen (millions) 2019 2020 Japanese plans Foreign plans Japanese plans Foreign plans Present value of defined benefit obligations: Balance at beginning of year ¥ 1,331,475 ¥ 1,042,753 ¥ 1,366,380 ¥ 1,086,438 Current service cost 36,300 29,133 36,331 29,063 Past service cost — 338 — (2,254 ) Interest cost 9,535 39,547 7,581 35,635 Plan participants’ contributions — 1,903 — 1,524 Remeasurements: Changes in demographic assumptions (25,360 ) (3,648 ) (6,476 ) (5,990 ) Changes in financial assumptions 34,655 36,157 157 70,892 Other 21,981 8,943 159 14,791 Benefits paid (42,206 ) (96,801 ) (47,088 ) (45,504 ) Exchange differences on translating — 28,113 — (40,684 ) Balance at end of year ¥ 1,366,380 ¥ 1,086,438 ¥ 1,357,044 ¥ 1,143,911 Fair value of plan assets: Balance at beginning of year ¥ 1,219,073 ¥ 807,528 ¥ 1,244,530 ¥ 860,858 Interest income 8,807 30,553 6,967 28,682 Actual return on plan assets, excluding interest income 34,142 10,489 (42,333 ) (10,503 ) Employer contributions 22,109 87,803 22,168 50,926 Plan participants’ contributions — 1,903 — 1,524 Benefits paid (39,601 ) (96,801 ) (43,451 ) (45,504 ) Exchange differences on translating foreign operations — 19,383 — (37,480 ) Balance at end of year ¥ 1,244,530 ¥ 860,858 ¥ 1,187,881 ¥ 848,503 Net defined benefit liabilities ¥ 121,850 ¥ 225,580 ¥ 169,163 ¥ 295,408 2) Fair value of plan assets Honda’s investment policies for the Japanese and foreign pension plan assets are designed to maximize total medium-to-long medium-to-long The fair value of the Japanese and foreign pension plan assets by asset category as of March 31, 2019 and 2020 is as follows: As of March 31, 2019 Yen (millions) Japanese plans Foreign plans Market price in active market Market price in active market Quoted Unquoted Total Quoted Unquoted Total Cash and cash equivalents ¥ 9,207 ¥ — ¥ 9,207 ¥ 36,373 ¥ — ¥ 36,373 Equity securities: Japan 32,885 1 32,886 13,970 — 13,970 United States 234,226 — 234,226 94,332 — 94,332 Other 231,162 242 231,404 112,403 4,614 117,017 Debt securities: Japan 71,487 — 71,487 — 433 433 United States 3,036 143,673 146,709 — 119,942 119,942 Other 181,728 47,845 229,573 — 10,910 10,910 Group annuity insurance: General accounts — 34,663 34,663 — — — Separate accounts — 16,569 16,569 — — — Pooled funds: Real estate funds — — — — 53,100 53,100 Private equity funds — — — — 91,264 91,264 Hedge funds — 116,183 116,183 — 61,520 61,520 Commingled and other mutual funds 3,859 111,914 115,773 8,882 238,504 247,386 Other 32 5,818 5,850 (1,447 ) 16,058 14,611 Total ¥ 767,622 ¥ 476,908 ¥ 1,244,530 ¥ 264,513 ¥ 596,345 ¥ 860,858 As of March 31, 2020 Yen (millions) Japanese plans Foreign plans Market price in active market Market price in active market Quoted Unquoted Total Quoted Unquoted Total Cash and cash equivalents ¥ 7,033 ¥ — ¥ 7,033 ¥ 25,202 ¥ — ¥ 25,202 Equity securities: Japan 29,153 — 29,153 8,673 — 8,673 United States 188,020 — 188,020 60,026 — 60,026 Other 196,401 72 196,473 66,798 — 66,798 Debt securities: Japan 75,526 — 75,526 — 389 389 United States 4,495 156,356 160,851 — 123,331 123,331 Other 168,800 55,601 224,401 — 10,129 10,129 Group annuity insurance: General accounts — 36,991 36,991 — — — Separate accounts — 15,961 15,961 — — — Pooled funds: Real estate funds — 122 122 — 55,802 55,802 Private equity funds — — — — 107,319 107,319 Hedge funds — 117,841 117,841 — 49,198 49,198 Commingled and other 4,476 129,594 134,070 8,151 313,289 321,440 Other 314 1,125 1,439 524 19,672 20,196 Total ¥ 674,218 ¥ 513,663 ¥ 1,187,881 ¥ 169,374 ¥ 679,129 ¥ 848,503 3) Actuarial assumptions The significant actuarial assumptions used to determine the present value of defined benefit obligations as of March 31, 2019 and 2020 are as follows: 2019 2020 Japanese plans Foreign plans Japanese plans Foreign plans Discount rate 0.6 % 2.5 - 3.9% 0.6 % 2.5 - 3.8% Rate of salary increase 1.6 % 2.5 - 3.0% 1.6 % 2.0 - 2.8% 4) Sensitivity analysis The effects on defined benefit obligations of 0.5% increase or decrease in the discount rate as of March 31, 2019 and 2020 are as follows: Yen (millions) 2019 2020 Japanese plans Foreign plans Japanese plans Foreign plans 0.5% decrease ¥ 114,468 increase ¥ 102,878 increase ¥ 110,540 increase ¥ 103,305 increase 0.5% increase ¥ 101,281 decrease ¥ 90,659 decrease ¥ 97,949 decrease ¥ 91,314 decrease This sensitivity analysis shows changes in defined benefit obligations as of March 31, 2019 and 2020, as a result of changes in actuarial assumptions that the Company can reasonably assume. This analysis is based on provisional calculations, and thus actual results may differ from the analysis. In addition, changes in the rate of salary increase are not expected. 5) Cash flows The amount of contributions to plan assets made by the Company and certain of its consolidated subsidiaries are determined based on various factors such as the level of salary and service years of employees, status of plan asset reserve, and actuarial calculations. In accordance with the provisions of the Defined Benefit Corporate Pension Act, the Honda Pension Fund also recalculates the amount of contributions every five years at the end of the reporting period as a base date, in an effort to ensure balanced finances in the future. The Company and certain of its consolidated subsidiaries may make contributions of a necessary amount if the amount of reserve falls below the minimum base amount. The Company and certain of its consolidated subsidiaries expect to contribute ¥21,841 million to its Japanese pension plans and ¥20,333 million to its foreign pension plans in the year ending March 31, 2021. The weighted average duration of defined benefit obligations as of March 31, 2019 and 2020 are as follows: 2019 2020 Japanese plans Foreign plans Japanese plans Foreign plans Weighted average duration of defined benefit obligations 16 years 17 years 15 years 16 years (b) Personnel Expenses Personnel expenses included in the consolidated statements of income for the years ended March 31, 2018, 2019 and 2020 are as follows: Yen (millions) 2018 2019 2020 Personnel expenses ¥ 1,576,012 ¥ 1,634,785 ¥ 1,605,553 Personnel expenses include salaries, bonuses, social security expenses and expenses relating to post-employment benefits.

Equity

Equity	12 Months Ended
	Mar. 31, 2020
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Equity	(19) Equity (a) Management of Capital Honda makes investments in capital and research and development to improve corporate value through growth on a global basis. In order to meet these funding needs, Honda makes capital management through consideration of the balance between financing liabilities and equity. Financing liabilities and equity of Honda as of March 31, 2019 and 2020 are as follows: Yen (millions) 2019 2020 Financing liabilities ¥ 7,331,120 ¥ 7,469,686 Equity 8,565,790 8,286,023 (b) Common Stock The Company’s total number of shares authorized and issued for the years ended March 31, 2018, 2019 and 2020 are as follows: Shares 2018 2019 2020 Total number of authorized shares Balance at end of year Common shares, no par value 7,086,000,000 7,086,000,000 7,086,000,000 Total number of issued shares Balance at beginning of year 1,811,428,430 1,811,428,430 1,811,428,430 Changes during the year — — — Balance at end of year 1,811,428,430 1,811,428,430 1,811,428,430 All of the issued shares as of March 31, 2018, 2019 and 2020 have been paid in full. (c) Capital Surplus and Retained Earnings Capital surplus consists of surplus that is derived from equity transactions and not recorded in common stock, and its primary component is capital reserves. The Companies Act of Japan provides that no less than 50% of the paid-in Retained earnings consist of legal reserves and accumulated earnings. The Companies Act of Japan provides that earnings in an amount equal to 10% of cash dividends from retained earnings shall be appropriated as a capital reserve or a legal reserve on the date of distribution of retained earnings until an aggregated amount of capital reserve and legal reserve equals 25% of common stock. Legal reserves may be used upon approval of the General Meeting of Shareholders. Certain foreign consolidated subsidiaries are also required to appropriate their earnings under the laws of respective countries. (d) Treasury Stock The total number of the Company’s treasury stock held by Honda as of March 31, 2018, 2019 and 2020 is as follows: Shares 2018 2019 2020 Common shares 33,150,615 51,867,045 84,818,644 Under the Companies Act of Japan, the number of shares and total value of treasury stock acquisition may be determined, upon approval of the General Meeting of Shareholders, within the amount available for distribution. Furthermore, treasury stock may be acquired through market transactions or tender offers in accordance with the articles of incorporation within the conditions set forth in the Companies Act, upon approval of the Board of Directors. (e) Other Components of Equity The changes in other components of equity for the years ended March 31, 2018, 2019 and 2020 are as follows: Yen (millions) Remeasurements of Net changes in revaluation of Exchange differences Total Balance as of April 1, 2017 ¥ — ¥ 85,947 ¥ 265,459 ¥ 351,406 Adjustment during the year ¥ 12,125 ¥ 20,655 ¥ (192,572 ) ¥ (159,792 ) Reclassification to retained earnings (12,125 ) (1,197 ) — (13,322 ) Balance as of March 31, 2018 ¥ — ¥ 105,405 ¥ 72,887 ¥ 178,292 Effect of changes in accounting policy ¥ — ¥ (208 ) ¥ — ¥ (208 ) Effect of hyperinflation — — 14,896 14,896 Adjusted balance as of April 1, 2018 ¥ — ¥ 105,197 ¥ 87,783 ¥ 192,980 Adjustment during the year ¥ (23,383 ) ¥ (26,696 ) ¥ 77,372 ¥ 27,293 Reclassification to retained earnings 23,383 (29,273 ) — (5,890 ) Balance as of March 31, 2019 ¥ — ¥ 49,228 ¥ 165,155 ¥ 214,383 Adjustment during the year ¥ (102,230 ) ¥ (24,559 ) ¥ (304,670 ) ¥ (431,459 ) Reclassification to retained earnings 102,230 207 — 102,437 Balance as of March 31, 2020 ¥ — ¥ 24,876 ¥ (139,515 ) ¥ (114,639 ) (f) Other Comprehensive Income Each component of other comprehensive income and related tax effect including non-controlling For the year ended March 31, 2018 Yen (millions) Before-tax Tax benefit Net-of-tax Items that will not be reclassified to profit or loss: Remeasurements of defined benefit plans: Amount incurred during the year ¥ 47,383 ¥ (34,039 ) ¥ 13,344 Net changes 47,383 (34,039 ) 13,344 Net changes in revaluation of financial assets measured at fair value through other comprehensive income: Amount incurred during the year 20,020 (732 ) 19,288 Net changes 20,020 (732 ) 19,288 Share of other comprehensive income of investments accounted for using the equity method: Amount incurred during the year 1,729 (41 ) 1,688 Net changes 1,729 (41 ) 1,688 Items that may be reclassified subsequently to profit or loss: Net changes in revaluation of financial assets measured at fair value through other comprehensive income: Amount incurred during the year — — — Reclassification to profit or loss — — — Net changes — — — Exchange differences on translating foreign operations: Amount incurred during the year (204,372 ) (4 ) (204,376 ) Reclassification to profit or loss 188 4 192 Net changes (204,184 ) — (204,184 ) Share of other comprehensive income of investments accounted for using the equity method: Amount incurred during the year 12,266 (521 ) 11,745 Reclassification to profit or loss (1,155 ) 30 (1,125 ) Net changes 11,111 (491 ) 10,620 Total other comprehensive income ¥ (123,941 ) ¥ (35,303 ) ¥ (159,244 ) For the year ended March 31, 2019 Yen (millions) Before-tax Tax benefit Net-of-tax Items that will not be reclassified to profit or loss: Remeasurements of defined benefit plans: Amount incurred during the year ¥ (25,538 ) ¥ 1,793 ¥ (23,745 ) Net changes (25,538 ) 1,793 (23,745 ) Net changes in revaluation of financial assets measured at fair value through other comprehensive income: Amount incurred during the year (34,898 ) 10,852 (24,046 ) Net changes (34,898 ) 10,852 (24,046 ) Share of other comprehensive income of investments accounted for using the equity method: Amount incurred during the year (3,029 ) 192 (2,837 ) Net changes (3,029 ) 192 (2,837 ) Items that may be reclassified subsequently to profit or loss: Net changes in revaluation of financial assets measured at fair value through other comprehensive income: Amount incurred during the year 378 (55 ) 323 Reclassification to profit or loss (88 ) (7 ) (95 ) Net changes 290 (62 ) 228 Exchange differences on translating foreign operations: Amount incurred during the year 97,122 (443 ) 96,679 Reclassification to profit or loss (1,554 ) 443 (1,111 ) Net changes 95,568 — 95,568 Share of other comprehensive income of investments accounted for using the equity method: Amount incurred during the year (19,793 ) 946 (18,847 ) Reclassification to profit or loss — — — Net changes (19,793 ) 946 (18,847 ) Total other comprehensive income ¥ 12,600 ¥ 13,721 ¥ 26,321 For the year ended March 31, 2020 Yen (millions) Before-tax Tax benefit Net-of-tax Items that will not be reclassified to profit or loss: Remeasurements of defined benefit plans: Amount incurred during the year ¥ (132,188 ) ¥ 29,205 ¥ (102,983 ) Net changes (132,188 ) 29,205 (102,983 ) Net changes in revaluation of financial assets measured at fair value through other comprehensive income: Amount incurred during the year (33,565 ) 10,204 (23,361 ) Net changes (33,565 ) 10,204 (23,361 ) Share of other comprehensive income of investments accounted for using the equity method: Amount incurred during the year (1,735 ) 185 (1,550 ) Net changes (1,735 ) 185 (1,550 ) Items that may be reclassified subsequently to profit or loss: Net changes in revaluation of financial assets measured at fair value through other comprehensive income: Amount incurred during the year 356 (47 ) 309 Reclassification to profit or loss (31 ) 1 (30 ) Net changes 325 (46 ) 279 Exchange differences on translating foreign operations: Amount incurred during the year (292,590 ) (176 ) (292,766 ) Reclassification to profit or loss (611 ) 176 (435 ) Net changes (293,201 ) — (293,201 ) Share of other comprehensive income of investments accounted for using the equity method: Amount incurred during the year (31,054 ) 661 (30,393 ) Reclassification to profit or loss — — — Net changes (31,054 ) 661 (30,393 ) Total other comprehensive income ¥ (491,418 ) ¥ 40,209 ¥ (451,209 ) The components of other comprehensive income included in non-controlling Yen (millions) 2018 2019 2020 Items that will not be reclassified to profit or loss: Remeasurements of defined benefit plans ¥ 1,534 ¥ (338) ¥ (753) Net changes in revaluation of financial assets measured at fair value through other comprehensive income 6 17 (73 ) Items that may be reclassified subsequently to profit or loss: Exchange differences on translating foreign operations (992 ) (651 ) (18,924 ) Total ¥ 548 ¥ (972 ) ¥ (19,750 ) (g) Dividends from Retained Earnings The Company distributes retained earnings within the available amount calculated in accordance with the Companies Act of Japan. The amount of retained earnings available for distribution is calculated based on the amount of retained earnings recorded in the Company’s non-consolidated The amounts recognized as dividends of retained earnings for the years ended March 31, 2018, 2019 and 2020 are as follows: 1) Dividend payout For the year ended March 31, 2018 Resolution The Ordinary General Meeting of Shareholders on June 15, 2017 Type of shares Common shares Total amount of dividends (millions of yen) 43,254 Dividend per share (yen) 24.00 Record date March 31, 2017 Effective date June 16, 2017 Resolution The Board of Directors Meeting on August 1, 2017 Type of shares Common shares Total amount of dividends (millions of yen) 43,254 Dividend per share (yen) 24.00 Record date June 30, 2017 Effective date August 25, 2017 Resolution The Board of Directors Meeting on November 1, 2017 Type of shares Common shares Total amount of dividends (millions of yen) 43,254 Dividend per share (yen) 24.00 Record date September 30, 2017 Effective date November 29, 2017 Resolution The Board of Directors Meeting on February 2, 2018 Type of shares Common shares Total amount of dividends (millions of yen) 44,456 Dividend per share (yen) 25.00 Record date December 31, 2017 Effective date February 28, 2018 For the year ended March 31, 2019 Resolution The Board of Directors Meeting on April 27, 2018 Type of shares Common shares Total amount of dividends (millions of yen) 48,013 Dividend per share (yen) 27.00 Record date March 31, 2018 Effective date May 30, 2018 Resolution The Board of Directors Meeting on July 31, 2018 Type of shares Common shares Total amount of dividends (millions of yen) 47,682 Dividend per share (yen) 27.00 Record date June 30, 2018 Effective date August 28, 2018 Resolution The Board of Directors Meeting on October 30, 2018 Type of shares Common shares Total amount of dividends (millions of yen) 49,287 Dividend per share (yen) 28.00 Record date September 30, 2018 Effective date November 28, 2018 Resolution The Board of Directors Meeting on February 1, 2019 Type of shares Common shares Total amount of dividends (millions of yen) 49,287 Dividend per share (yen) 28.00 Record date December 31, 2018 Effective date February 28, 2019 For the year ended March 31, 2020 Resolution The Board of Directors Meeting on May 8, 2019 Type of shares Common shares Total amount of dividends (millions of yen) 49,287 Dividend per share (yen) 28.00 Record date March 31, 2019 Effective date June 3, 2019 Resolution The Board of Directors Meeting on August 2, 2019 Type of shares Common shares Total amount of dividends (millions of yen) 49,287 Dividend per share (yen) 28.00 Record date June 30, 2019 Effective date August 30, 2019 Resolution The Board of Directors Meeting on November 8, 2019 Type of shares Common shares Total amount of dividends (millions of yen) 49,287 Dividend per share (yen) 28.00 Record date September 30, 2019 Effective date November 29, 2019 Resolution The Board of Directors Meeting on February 7, 2020 Type of shares Common shares Total amount of dividends (millions of yen) 48,932 Dividend per share (yen) 28.00 Record date December 31, 2019 Effective date March 4, 2020 2) Dividends payable of which record date was in the year ended March 31, 2020, effective after the period Resolution The Board of Directors Meeting on May 12, 2020 Type of shares Common shares Resource for dividend Retained earnings Total amount of dividends (millions of yen) 48,363 Dividend per share (yen) 28.00 Record date March 31, 2020 Effective date June 3, 2020

Sales Revenue

Sales Revenue	12 Months Ended
	Mar. 31, 2020
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Sales Revenue	(20) Sales Revenue (a) Disaggregation of revenue As stated in note 4, Honda has four reportable segments: Motorcycle business, Automobile business, Financial services business and Life creation and other businesses. The sales revenue disaggregated by geographical markets based on the location of the customer and the reconciliation of the disaggregated sales revenue with the four reportable segments for the years ended March 31, 2019 and 2020 are as follows: For the year ended March 31, 2019 Yen (millions) Motorcycle Automobile Financial Life Total Revenue arising from contracts with customers Japan ¥ 79,297 ¥ 1,590,032 ¥ 86,437 ¥ 87,503 ¥ 1,843,269 North America 188,022 6,163,120 1,013,987 135,277 7,500,406 Europe 159,645 427,347 — 60,993 647,985 Asia 1,372,583 2,359,557 33 46,402 3,778,575 Other Regions 297,757 521,124 — 20,608 839,489 Total ¥ 2,097,304 ¥ 11,061,180 ¥ 1,100,457 ¥ 350,783 ¥ 14,609,724 Revenue arising from the other sources* 2,851 10,937 1,264,898 207 1,278,893 Total ¥ 2,100,155 ¥ 11,072,117 ¥ 2,365,355 ¥ 350,990 ¥ 15,888,617 Explanatory note: * Revenue arising from the other sources primarily includes lease revenues recognized under IAS 17 and interest recognized under IFRS 9. For the year ended March 31, 2020 Yen (millions) Motorcycle Automobile Financial Life Total Revenue arising from contracts with customers Japan ¥ 77,241 ¥ 1,473,552 ¥ 130,775 ¥ 76,114 ¥ 1,757,682 North America 203,822 5,648,818 1,108,827 133,070 7,094,537 Europe 144,392 359,166 — 53,233 556,791 Asia 1,329,352 2,048,588 11 46,433 3,424,384 Other Regions 295,093 425,900 — 16,200 737,193 Total ¥ 2,049,900 ¥ 9,956,024 ¥ 1,239,613 ¥ 325,050 ¥ 13,570,587 Revenue arising from the other sources* 9,435 3,056 1,347,352 579 1,360,422 Total ¥ 2,059,335 ¥ 9,959,080 ¥ 2,586,965 ¥ 325,629 ¥ 14,931,009 Explanatory note: * Revenue arising from the other sources primarily includes lease revenues recognized under IFRS 16 and interest recognized under IFRS 9. (b) Contract balances The receivables from contracts with customers and contract liabilities for the years ended March 31, 2019 and 2020 are as follows: Yen (millions) 2019 2020 Receivables from contracts with customers: Trade receivables ¥ 707,337 ¥ 516,705 Contract liabilities: Other current liabilities 214,888 221,959 Other noncurrent liabilities 165,722 167,076 The amounts of revenue recognized for the years ended March 31, 2019 and 2020 that were included in the contract liability balances at the beginning of the year are ¥212,303 million and ¥186,581 million, respectively. The amounts of revenue recognized for the years ended March 31, 2019 and 2020 from performance obligations satisfied (or partially satisfied) in previous years were immaterial. In addition, the balances of contract assets were immaterial. (c) Transaction price allocated to the remaining performance obligation The revenue expected to be recognized in the future related to performance obligations that are unsatisfied (or partially unsatisfied) as of March 31, 2019 and 2020 are as follows: Yen (millions) 2019 2020 Within 1 year ¥ 103,734 ¥ 106,745 Between 1 and 5 years 185,456 201,925 Later than 5 12,791 1,860 Total ¥ 301,981 ¥ 310,530 The table does not include the remaining performance obligations that have original expected durations of one year or less and estimated amounts of variable consideration that are constrained from being recognized as revenue. (d) Assets recognized from the costs to obtain or fulfill a contract with a customer The assets recognized from the costs to obtain a contract with a customer as of March 31, 2019 and 2020 are as follows: Yen (millions) 2019 2020 Assets recognized from the costs to obtain a contract with a customer ¥ 105,471 ¥ 100,751 Honda recognizes the incremental costs of obtaining a contract with a customer and the costs incurred in fulfilling a contract with a customer that are directly associated with the contract as an asset, if those costs are expected to be recoverable. The incremental costs of obtaining a contract are those costs that an entity incurs to obtain a contract with a customer that it would not have incurred if the contract had not been obtained. The assets recognized from the costs to obtain a contract are presented in the consolidated statement of financial position mainly as other non-current The amounts of amortization of the assets for the years ended March 31, 2019 and 2020 are ¥35,057 million and ¥35,324 million, respectively.

Research and Development

Research and Development	12 Months Ended
	Mar. 31, 2020
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Research and Development	(21) Research and Development Research and development costs for the years ended March 31, 2018, 2019 and 2020 consist of the following: Yen (millions) 2018 2019 2020 Research and development expenditures incurred during the reporting period ¥ 730,734 ¥ 820,037 ¥ 821,478 Amount capitalized (132,800 ) (161,232 ) (192,397 ) Amortization and impairment losses of capitalized development costs 153,922 148,100 175,042 Total ¥ 751,856 ¥ 806,905 ¥ 804,123

Finance Income and Finance Cost

Finance Income and Finance Costs	12 Months Ended
	Mar. 31, 2020
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Finance Income and Finance Costs	(22) Finance Income and Finance Costs Finance income and finance costs for the years ended March 31, 2018, 2019 and 2020 consist of the followin g Yen (millions) 2018 2019 2020 Interest income: Financial assets measured at amortized cost ¥ 39,645 ¥ 46,862 ¥ 47,679 Financial assets measured at fair value through other comprehensive income — 323 249 Financial assets measured at fair value through profit or loss 1,546 1,433 1,484 Total 41,191 48,618 49,412 Interest expense: Financial liabilities measured at amortized cost (12,970 ) (13,217 ) (15,624 ) Other — — (9,065 ) Total (12,970 ) (13,217 ) (24,689 ) Other, net: Dividends received: Financial assets measured at fair value through other 4,708 5,056 5,169 Financial assets measured at fair value through profit or 15 21 25 Gains (losses) on derivatives: Financial assets and financial liabilities measured at fair value through profit or loss 67,132 (54,897 ) (19,270 ) Gains (losses) on foreign exchange (69,197 ) 31,266 (24,942 ) Other 2,893 7,331 6,373 Total 5,551 (11,223 ) (32,645 ) Total ¥ 33,772 ¥ 24,178 ¥ (7,922 )

Income Taxes

Income Taxes	12 Months Ended
	Mar. 31, 2020
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Income Taxes	(23) Income Taxes (a) Income Tax Expense Profit before income taxes and income tax expense for the years ended March 31, 2018, 2019 and 2020 consist of the following: Yen (millions) 2018 2019 2020 Japan Foreign Total Japan Foreign Total Japan Foreign Total Profit (loss) before income taxes ¥ 126,915 ¥ 988,058 ¥ 1,114,973 ¥ 70,805 ¥ 908,570 ¥ 979,375 ¥ (63,390 ) ¥ 853,308 ¥ 789,918 Income tax expense (benefit): Current taxes (2,956 ) 280,316 277,360 32,937 183,828 216,765 11,036 233,570 244,606 Deferred taxes 25,149 (316,175 ) (291,026 ) 58,121 28,203 86,324 17,470 17,910 35,380 Total ¥ 22,193 ¥ (35,859 ) ¥ (13,666 ) ¥ 91,058 ¥ 212,031 ¥ 303,089 ¥ 28,506 ¥ 251,480 ¥ 279,986 The amount of write-down of deferred tax assets included in income tax expense (deferred taxes) for the year ended March 2019 is ¥50,322 million. The statutory income tax rate in Japan for the years ended March 31, 2018, 2019 and 2020 was 30.4%, 30.2% and 30.2%, respectively. The foreign subsidiaries are subject to taxes based on income at rates ranging from 16.0% to 35.0%. The Japanese statutory income tax rate for the years ended March 31, 2018, 2019 and 2020 differs from the average effective tax rate for the following reasons: 2018 2019 2020 Statutory income tax rate 30.4 % 30.2 % 30.2 % Difference in statutory income tax rates of foreign subsidiaries (1.1 ) (4.3 ) (3.9 ) Effects of investments accounted for using the equity method (6.7 ) (7.1 ) (6.2 ) Effects of undistributed earnings and withholding taxes on royalty 7.0 7.7 8.6 Changes in unrecognized deferred tax assets (0.2 ) 8.3 7.8 Effects of income and expense not taxable and deductible for tax purpose 0.1 0.2 0.8 Effects of tax credit (2.1 ) (3.2 ) (3.0 ) Other adjustments relating to prior years 0.3 (0.1 ) (0.7 ) Adjustments for the uncertain tax treatments on income taxes 0.7 0.8 0.2 Adjustments for the changes in income tax laws* (30.1 ) (2.5 ) 2.3 Other 0.5 0.9 (0.7 ) Average effective tax rate (1.2 )% 30.9 % 35.4 % Explanatory note: * The Tax Cuts and Jobs Act (“the Act”) was enacted in the United States on December 22, 2017. Due to the Act, the federal corporate income tax rate in the United States applicable to the Company’s United States businesses was reduced from 35% to a blended rate of 31.55% for the fiscal year ended March 31, 2018 and to 21% from the fiscal year commencing on April 1, 2018. The Company recognized impacts of the enactment of the Act, including a decrease in income tax expenses of ¥346,129 million, as a result of reevaluating deferred tax assets and liabilities in its consolidated subsidiaries in the United States based on the reduced federal corporate income tax rate, for the fiscal year ended March 31, 2018. (b) Deferred Tax Assets and Deferred Tax Liabilities The components by major factor in deferred tax assets and deferred tax liabilities as of March 31, 2019 and 2020 are as follows: Yen (millions) 2019 2020 Deferred tax assets: Inventories ¥ 39,044 ¥ 29,899 Accrued expenses 75,378 66,115 Provisions 101,780 75,858 Property, plant and equipment 18,462 18,936 Intangible assets 22,776 18,198 Retirement benefit liabilities 95,324 138,735 Carryforward of unused tax losses 54,817 58,023 Carryforward of unused tax credit 43,130 50,472 Other 124,588 107,848 Total ¥ 575,299 ¥ 564,084 Deferred tax liabilities: Property, plant and equipment ¥ 81,472 ¥ 76,126 Intangible assets 180,607 183,985 Other financial assets 21,720 5,468 Finance leases 41,050 40,892 Operating leases 718,981 701,303 Undistributed earnings 58,112 56,136 Other 50,450 66,489 Total ¥ 1,152,392 ¥ 1,130,399 Net deferred tax assets (liabilities) ¥ (577,093 ) ¥ (566,315 ) The changes in deferred tax assets and deferred tax liabilities recognized as income tax expense in the consolidated statements of income for the years ended March 31, 2018, 2019 and 2020 are as follows: Yen (millions) 2018 2019 2020 Inventories ¥ 5,541 ¥ 28,022 ¥ 8,738 Provisions 45,492 20,711 22,185 Property, plant and equipment (27,520 ) (499 ) (3,503 ) Retirement benefit liabilities (623 ) 3,237 (5,597 ) Operating leases (328,950 ) 49,142 (3,697 ) Undistributed earnings 12,655 215 (1,059 ) Carryforward of unused tax losses 9,226 (19,335 ) (6,378 ) Carryforward of unused tax credit (10,300 ) (8,038 ) (8,423 ) Other 3,453 12,869 33,114 Total ¥ (291,026 ) ¥ 86,324 ¥ 35,380 Honda considers the probability that a portion of, or all of, the deductible temporary differences, carryforward of unused tax losses and carryforward of unused tax credit can be utilized against future taxable profits in the recognition of deferred tax assets. In assessing recoverability of deferred tax assets, management considers the scheduled reversal of deferred tax liabilities, projected future taxable profit and tax planning strategies. Based upon the level of historical taxable profit and projections for future taxable profit over the periods for which the deferred tax assets are deductible, management believes it is probable that Honda will utilize the benefits of these deferred tax assets as of March 31, 2019 and 2020. Uncertainty of estimates of future taxable profit could increase due to changes in the economic environment surrounding Honda, effects by market conditions, effects of currency fluctuations or other factors. Deferred tax assets recognized by entities that have suffered a loss in either the preceding or current period are ¥57,410 million and ¥56,912 million as of March 31, 2019 and 2020, respectively. Deductible temporary differences, carryforward of unused tax losses and carryforward of unused tax credit for which deferred tax assets are not recognized as of March 31, 2019 and 2020 are as follows: Yen (millions) 2019 2020 Deductible temporary differences ¥ 560,738 ¥ 665,917 Carryforward of unused tax losses 261,294 391,272 Carryforward of unused tax credit 3,850 1,242 The components by expiry of the carryforward of unused tax losses for which deferred tax assets are not recognized as of March 31, 2019 and 2020 are as follows: Yen (millions) 2019 2020 Within 1 year ¥ 8,759 ¥ 28,613 Between 1 and 5 years 67,352 59,027 Between 5 and 20 years 101,953 164,371 Indefinite periods 83,230 139,261 Total ¥ 261,294 ¥ 391,272 The components by expiry of the carryforward of unused tax credit for which deferred tax assets are not recognized as of March 31, 2019 and 2020 are as follows: Yen (millions) 2019 2020 Within 1 year ¥ 570 ¥ 343 Between 1 and 5 years 1,422 672 Between 5 and 20 years 1,858 227 Indefinite periods — — Total ¥ 3,850 ¥ 1,242 The aggregate amounts of temporary differences relating to investments in subsidiaries and interests in joint ventures for which deferred tax liabilities are not recognized as of March 31, 2019 and 2020 are ¥4,908,449 million and ¥4,718,298 million, respectively.

Earnings Per Share

Earnings Per Share	12 Months Ended
	Mar. 31, 2020
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Earnings Per Share	(24) Earnings Per Share Earnings per share attributable to owners of the parent for the years ended March 31, 2018, 2019 and 2020 are calculated based on the following information. There were no significant dilutive potential common shares outstanding for the years ended March 31, 2018, 2019 and 2020. 2018 2019 2020 Profit for the year attributable to owners of the parent (millions of yen) ¥ 1,059,337 ¥ 610,316 ¥ 455,746 Weighted average number of common shares outstanding, basic (shares) 1,793,088,970 1,763,983,221 1,752,006,211 Basic earnings per share attributable to owners of the parent (yen) ¥ 590.79 ¥ 345.99 ¥ 260.13

Financial Risk Management

Financial Risk Management	12 Months Ended
	Mar. 31, 2020
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Financial Risk Management	(25) Financial Risk Management (a) Risk Management Honda has manufacturing operations throughout the world and sells products and components to various countries. In the course of these activities, Honda holds trade receivables arising from business activities, receivables from financial services, trade payables and financing liabilities, and is thus exposed to market risk, credit risk and liquidity risk associated with the holding of such financial instruments. These risks are evaluated by Honda through periodic monitoring. (b) Market Risk Honda is exposed to the risk that the fair value or future cash flows of a financial instrument fluctuates because of changes in foreign currency exchange rates and interest rates. Honda uses derivatives that consist mainly of foreign currency forward exchange contracts, foreign currency option contracts, currency swap agreements and interest rate swap agreements to reduce primarily the risk that future cash flows of a financial instrument fluctuates because of changes in foreign currency exchange rates and interest rates. Derivatives are used within the scope of actual demand, in accordance with risk management policies. In addition, Honda does not hold any derivatives for trading purpose. 1) Foreign currency exchange rate risk Honda has manufacturing operations throughout the world and exports products and components to various countries. Honda purchases materials and components and sells its products and components in foreign currencies. Therefore, currency fluctuations may affect Honda’s profit and the value of the financial instruments it holds. Foreign currency forward exchange contracts and foreign currency option contracts are used to hedge currency risk of transactions denominated in foreign currencies (principally U.S. dollars). (Foreign currency exchange rate risk sensitivity analysis) Sensitivity analysis of Honda’s foreign currency exchange rate risk associated with holding financial instruments as of March 31, 2019 and 2020 is as follows. The following scenario demonstrates the impact of a 1% appreciation of the Japanese yen against the U.S. dollar on profit before income taxes, holding all variables other than the foreign currency exchange rate constant. Yen (millions) 2019 2020 Impact on profit before income taxes ¥ (777) ¥ (828) 2) Interest rate risk Honda is exposed to market risk for changes in interest rates related primarily to its debt obligations and receivables from financial services. In addition to short-term financing such as commercial paper, Honda has long-term debt with both fixed and floating rates. Honda’s receivables from financial services primarily use fixed rates. Interest rate swap agreements are mainly used to manage interest rate risk exposure of receivables from financial services and to match finance costs with finance income. Currency swap agreements used among different currencies, also serve to hedge foreign currency exchange risk as well as interest rate risk. (Interest rate risk sensitivity analysis) Sensitivity analysis of Honda’s interest rate risk associated with holding financial instruments as of March 31, 2019 and 2020 is as follows. The following scenario demonstrates the impact of a 100 basis point rise in interest rates on profit before income taxes, holding all variables other than interest rates constant. Yen (millions) 2019 2020 Impact on profit before income taxes ¥ (1,915) ¥ (4,861) 3) Equity price risk Honda is exposed to equity price risk as a result of its holdings of marketable equity securities. Marketable equity securities are held for purposes other than trading, and are mainly classified into financial assets measured at fair value through other comprehensive income. (c) Credit Risk Honda is exposed to the risk that one party to a financial instrument causes a financial loss for the other party by failing to discharge an obligation. Honda reduces the risk of financial assets other than derivatives in accordance with credit administration rules. Honda reduces the risk of derivatives by limiting the counterparties to major international banks and financial institutions that meet the internally established credit guidelines. The credit risk is mainly in receivables from financial services. Credit risk of the portfolio of consumer finance receivables can be affected by general economic conditions. Adverse changes such as a rise in unemployment can increase the likelihood of defaults. Declines in used vehicle prices can reduce the amount of recoveries on repossessed collaterals. The finance subsidiaries of the Company manage exposures to credit risk in consumer finance receivables by monitoring and adjusting underwriting standards, which affect the level of credit risk that Honda assumes, pricing contracts for expected losses, and focusing collection efforts to minimize losses. Credit risk on dealer finance receivables is affected primarily by the financial strength of the dealers within the portfolio, the value of collateral securing the financings, and economic and market factors that could affect the creditworthiness of dealers. The finance subsidiaries of the Company manage exposures to credit risk in dealer finance receivables by performing comprehensive reviews of dealers prior to establishing financing arrangements and continuously monitoring the payment performance and creditworthiness of these dealers. Honda has entered into various guarantee agreements, which mainly consist of loan commitments to dealers and guarantees of bank loans of employees for their housing costs. The finance subsidiaries of the Company maintain unused balances on committed lines to dealers based on loan commitment contracts. Although committed lines have been extended, they will not necessarily be withdrawn, as certain contracts contain terms and conditions of withdrawal that require screening of the obligor’s credit standing. There is risk that dealers fail to discharge withdrawn committed lines and cause financial loss for Honda. Regarding the bank loans of employees for their housing costs, if an employee defaults on his/her loan payments, Honda is required to perform under the guarantee. As of March 31, 2020, no amount has been accrued for any estimated losses under the obligations, as it is probable that the employees will be able to make all scheduled payments. 1) Credit risk exposure The analysis of the age of receivables from financial services that are past due as of March 31, 2019 and 2020 is as follows: Yen (millions) As of March 31, 2019 Less than 30 days 30-59 days 60-89 days 90 days and Total Consumer finance receivables: Retail ¥ 204,475 ¥ 35,706 ¥ 7,572 ¥ 6,070 ¥ 253,823 Finance lease 349 108 26 198 681 Dealer finance receivables: Wholesale 21,509 7,407 92 3,858 32,866 Total ¥ 226,333 ¥ 43,221 ¥ 7,690 ¥ 10,126 ¥ 287,370 Yen (millions) As of March 31, 2020 Less than 30 days 30-59 days 60-89 days 90 days and Total Consumer finance receivables: Retail ¥ 199,260 ¥ 38,862 ¥ 9,621 ¥ 6,609 ¥ 254,352 Finance lease 152 31 9 280 472 Dealer finance receivables: Wholesale 16,959 6,254 395 156 23,764 Total ¥ 216,371 ¥ 45,147 ¥ 10,025 ¥ 7,045 ¥ 278,588 The balances of retail receivables included in consumer finance receivables as of March 31, 2019 and 2020 are as follows: Yen (millions) 12-month ECL Lifetime ECL Total As of March 31, 2019 Not credit-impaired Credit-impaired Consumer finance receivables: Retail* ¥ 3,893,725 ¥ 691,401 ¥ 17,722 ¥ 4,602,848 Yen (millions) 12-month ECL Lifetime ECL Total As of March 31, 2020 Not credit-impaired Credit-impaired Consumer finance receivables: Retail* ¥ 2,969,699 ¥ 1,450,663 ¥ 20,002 ¥ 4,440,364 Explanatory note: * The tables above represent the gross amounts of retail receivables by stages of ECL model since the expected credit losses are measured collectively by our finance subsidiaries and the balances of those receivables are not directly allocated to the risk ratings. Dealerships are assigned an internal risk rating based primarily on their financial condition. At a minimum, risk ratings for dealerships are updated annually and more frequently for dealerships with weaker risk ratings. The following table shows the balances of dealer finance receivables and loan commitments classified into Group A or B based on the internal risk ratings. Group A includes the dealer finance receivables and loan commitments of dealerships with high credit quality characteristics. Group B includes the dealer finance receivables and loan commitments of remaining dealerships. The balances of dealer finance receivables and the undiscounted maximum amounts of potential payment for loan commitments by this risk rating as of March 31, 2019 and 2020 are as follows: Yen (millions) 12-month ECL Lifetime ECL Total As of March 31, 2019 Not credit-impaired Credit-impaired Dealer finance receivables: Group A ¥ 469,877 ¥ 9,224 ¥ — ¥ 479,101 Group B 202,993 13,223 16,897 233,113 Total ¥ 672,870 ¥ 22,447 ¥ 16,897 ¥ 712,214 Loan commitments: Group A ¥ 46,962 ¥ — ¥ — ¥ 46,962 Group B 10,479 — — 10,479 Total ¥ 57,441 ¥ — ¥ — ¥ 57,441 The undiscounted maximum amount of potential payment for guarantees of bank loans of employees for their housing costs as of March 31, 2019 is ¥11,953 million. Yen (millions) 12-month ECL Lifetime ECL Total As of March 31, 2020 Not credit-impaired Credit-impaired Dealer finance receivables: Group A ¥ 414,323 ¥ 23,308 ¥ 77 ¥ 437,708 Group B 217,741 9,900 1,643 229,284 Total ¥ 632,064 ¥ 33,208 ¥ 1,720 ¥ 666,992 Loan commitments: Group A ¥ 43,823 ¥ — ¥ — ¥ 43,823 Group B 19,832 — — 19,832 Total ¥ 63,655 ¥ — ¥ — ¥ 63,655 The undiscounted maximum amount of potential payment for guarantees of bank loans of employees for their housing costs as of March 31, 2020 is ¥10,100 million. 2) Collateral held as security The finance subsidiaries of the Company generally hold sold products as collateral for consumer finance receivables. The finance subsidiaries of the Company hold the dealerships’ other assets as collateral in addition to sold products for dealer finance receivables. The extent to which collateral mitigates credit risk is dependent on the value of collateral relative to the outstanding receivables balance at the time of repossession. The estimated fair value of collateral for credit-impaired consumer finance receivables excluding collateral values in excess of carrying amounts as of March 31, 2019 and 2020 are approximately 60%, respectively, and those for dealer finance receivables are approximately 90% and 60% of the carrying amounts, respectively. The extent to which collateral mitigates credit risk is also dependent on finance subsidiaries’ ability to take possession of the collateral. (d) Liquidity Risk Honda raises funds by commercial paper, bank loans, medium-term notes, corporate bonds and securitization of finance receivables and equipment on operating leases. Honda is exposed to the liquidity risk that Honda would not be able to repay liabilities on the due date due to the deterioration of the financing environment. Exposure to liquidity risk is managed by maintaining sufficient capital resources, a sufficient level of liquidity and a sound balance sheet. Honda meets its working capital targets primarily through cash generated by business operations, bank loans, corporate bonds and commercial paper. Honda funds financial programs for customers and dealers primarily from medium-term notes, bank loans, securitization of finance receivables and equipment on operating leases, commercial paper and corporate bonds. The unused portions of the credit facility of Honda’s commercial paper and medium-term note programs as of March 31, 2019 and 2020 are as follows: Yen (millions) 2019 2020 Commercial paper ¥ 602,243 ¥ 481,352 Medium-term notes 1,229,911 2,791,490 Total ¥ 1,832,154 ¥ 3,272,842 Honda is authorized to obtain financing at prevailing interest rates under these programs. Honda is aware of the possibility that various factors, such as recession-induced market contraction and financial and foreign exchange market volatility may adversely affect liquidity. For this reason, Honda has sufficient committed lines of credit that serve as alternative liquidity for the commercial paper issued regularly to replace debt. The unused portions of the committed lines of credit extended by financial institutions to Honda as of March 31, 2019 and 2020 are as follows: Yen (millions) 2019 2020 Commercial paper programs ¥ 1,080,503 ¥ 1,084,917 Other 58,199 63,484 Total ¥ 1,138,702 ¥ 1,148,401 Borrowings under those committed lines of credit generally are available at the prime interest rate. Maturity analysis of financial liabilities 1) Non-derivative Non-derivative Yen (millions) As of March 31, 2019 Carrying amount Within 1 year Between Later than Total contractual Trade payables ¥ 1,184,882 ¥ 1,184,882 ¥ — ¥ — ¥ 1,184,882 Financing liabilities 7,331,120 3,321,576 4,089,215 239,638 7,650,429 Accrued expenses 476,300 476,300 — — 476,300 Other financial liabilities 127,108 66,240 29,615 31,416 127,271 Total ¥ 9,119,410 ¥ 5,048,998 ¥ 4,118,830 ¥ 271,054 ¥ 9,438,882 Yen (millions) As of March 31, 2020 Carrying amount Within 1 year Between Later than Total contractual Trade payables ¥ 958,469 ¥ 958,468 ¥ — ¥ — ¥ 958,468 Financing liabilities 7,469,686 3,341,226 3,964,660 288,041 7,593,927 Accrued expenses 449,716 449,716 — — 449,716 Other financial liabilities 397,467 88,629 98,285 230,562 417,476 Total ¥ 9,275,338 ¥ 4,838,039 ¥ 4,062,945 ¥ 518,603 ¥ 9,419,587 Other financial liabilities include lease liabilities. Lease liabilities by maturity as of March 31, 2020 is as follows: Yen (millions) As of March 31, 2020 Carrying amount Within 1 year Between Later than Total contractual Lease liabilities ¥ 330,04 0 ¥ 55,486 ¥ 90,999 ¥ 203,563 ¥ 350,048 2) Derivative financial liabilities Derivative financial liabilities by maturity as of March 31, 2019 and 2020 are as follows: Yen (millions) As of March 31, 2019 Within 1 year Between 1 and 5 years Later than 5 years Total contractual Derivative financial liabilities ¥ 41,518 ¥ 49,513 ¥ 1,609 ¥ 92,640 Yen (millions) As of March 31, 2020 Within 1 year Between 1 and 5 years Later than 5 years Total contractual Derivative financial liabilities ¥ 51,697 ¥ 69,621 ¥ 365 ¥ 121,683

Fair Value

Fair Value	12 Months Ended
	Mar. 31, 2020
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Fair Value	(26) Fair Value (a) Definition of Fair Value Hierarchy Honda uses a three-level hierarchy when measuring fair value. The following is a description of the three hierarchy levels: Level 1 Quoted prices (unadjusted) in active markets for identical assets or liabilities that the Company has the ability to access as of the measurement date Level 2 Inputs other than quoted prices included within Level 1 that are observable for the assets or liabilities, either directly or indirectly Level 3 Unobservable inputs for the assets or liabilities The level in the fair value hierarchy within which a fair value measurement in its entirety falls is based on the lowest input that is significant to the fair value measurement in its entirety. Honda recognizes the transfers between the levels of the fair value hierarchy at the end of the reporting period during which the change has occurred. (b) Method of Fair Value Measurement The fair values of assets and liabilities are determined based on relevant market information and through the use of an appropriate valuation method. The measurement methods and assumptions used in the measurement of assets and liabilities are as follows: (Cash and cash equivalents, trade receivables and trade payables) The fair values approximate their carrying amounts due to their short-term maturities. (Receivables from financial services) The fair value of receivables from financial services is measured primarily by discounting future cash flows using the current interest rates applicable for these receivables of similar remaining maturities. Fair value measurement for receivables from financial services is classified as Level 3. (Debt securities) Debt securities consist mainly of mutual funds, corporate bonds, local bonds and auction rate securities. The fair value of mutual funds with an active market is measured by using quoted market prices. Fair value measurement for mutual funds with an active market is classified as Level 1. The fair values of corporate bonds and local bonds are measured based on proprietary pricing models provided by specialists and/or market makers and the models obtain a wide array of market observable inputs such as credit ratings and discount rates. Fair value measurements for corporate bonds and local bonds are classified as Level 2. The subsidiary’s auction rate securities are A to AAA rated and are insured by qualified guarantee agencies, and reinsured by the Secretary of Education and the United States government, and guaranteed at approximately 95% by the United States government. To measure fair value of auction rate securities, Honda uses a third-party-developed valuation model which obtains a wide array of market observable inputs, as well as unobservable inputs including probability of passing or failing auction at each auction. Fair value measurement for auction rate securities is classified as Level 3. (Equity securities) The fair value of equity securities with an active market is measured by using quoted market prices. Fair value measurement for equity securities with an active market is classified as Level 1. The fair value of equity securities with no active market is measured mainly by using the comparable company valuation method and other appropriate valuation methods. Fair value measurement for equity securities with no active market is classified as Level 3. In addition, in the case that cost represents the best estimate of fair value, fair value for the equity securities with no active market is measured at cost. Price book-value ratio (PBR) of a comparable company are used as a significant unobservable input in the fair value measurement of equity securities classified as Level 3. The fair value increases (decreases) as PBR of a comparable company rise (decline). Such fair value measurements are conducted in accordance with the group accounting policy approved by the appropriate person of authority and based upon valuation methods determined by personnel in accounting divisions of Honda. (Derivatives) Derivatives consist mainly of foreign currency forward exchange contracts, foreign currency option contracts, currency swap agreements and interest rate swap agreements. The fair values of foreign currency forward exchange contracts and foreign currency option contracts are measured by using market observable inputs such as spot exchange rates, discount rates and implied volatility. The fair values of currency swap agreements and interest rate swap agreements are measured by discounting future cash flows using market observable inputs such as LIBOR rates, swap rates, and foreign exchange rates. Fair value measurements for these derivatives are classified as Level 2. The credit risk of the counterparties is considered in the valuation of derivatives. (Financing liabilities) The fair value of financing liabilities is measured by discounting future cash flows using interest rates currently available for liabilities of similar terms and remaining maturities. Fair value measurement of financing liabilities is mainly classified as Level 2. (c) Assets and Liabilities Measured at Fair Value on a recurring basis Assets and liabilities measured at fair value on a recurring basis as of March 31, 2019 and 2020 consist of the following: Yen (millions) As of March 31, 2019 Level 1 Level 2 Level 3 Total Other financial assets: Financial assets measured at fair value through profit or loss: Derivatives Foreign exchange instruments ¥ — ¥ 12,233 ¥ — ¥ 12,233 Interest rate instruments — 34,164 — 34,164 Total — 46,397 — 46,397 Debt securities 21,090 31,551 5,439 58,080 Financial assets measured at fair value through other Debt securities — 10,495 — 10,495 Equity securities 108,879 — 98,156 207,035 Total ¥ 129,969 ¥ 88,443 ¥ 103,595 ¥ 322,007 Other financial liabilities: Financial liabilities measured at fair value through profit or loss: Derivatives Foreign exchange instruments ¥ — ¥ 35,449 ¥ — ¥ 35,449 Interest rate instruments — 34,042 — 34,042 Total — 69,491 — 69,491 Total ¥ — ¥ 69,491 ¥ — ¥ 69,491 There were no transfers between Level 1 and Level 2 for the year ended March 31, 2019. Yen (millions) As of March 31, 2020 Level 1 Level 2 Level 3 Total Other financial assets: Financial assets measured at fair value through profit or loss: Derivatives Foreign exchange instruments ¥ — ¥ 19,215 ¥ — ¥ 19,215 Interest rate instruments — 76,589 — 76,589 Total — 95,804 — 95,804 Debt securities 18,175 34,949 5,224 58,348 Financial assets measured at fair value through other Debt securities — 9,069 — 9,069 Equity securities 78,493 — 99,508 178,001 Total ¥ 96,668 ¥ 139,822 ¥ 104,732 ¥ 341,222 Other financial liabilities: Financial liabilities measured at fair value through profit or loss: Derivatives Foreign exchange instruments ¥ — ¥ 24,834 ¥ — ¥ 24,834 Interest rate instruments — 90,334 — 90,334 Total — 115,168 — 115,168 Total ¥ — ¥ 115,168 ¥ — ¥ 115,168 There were no transfers between Level 1 and Level 2 for the year ended March 31, 2020. The changes in Level 3 assets and liabilities measured at fair value on a recurring basis for the years ended March 31, 2019 and 2020 are as follows: Yen (millions) For the year ended March 31, 2019 Debt securities Equity securities Balance as of April 1, 2018 ¥ 5,206 ¥ 12,671 Total gains or losses: Profit or loss (42 ) — Other comprehensive income — (3,824 ) Purchases — 89,651 Sales — (295 ) Exchange differences on translating foreign operations 275 (47 ) Balance as of March 31, 2019 ¥ 5,439 ¥ 98,156 Unrealized gains or losses included in profit or loss on assets held at March 31, 2019 ¥ (42 ) ¥ — Yen (millions) For the year ended March 31, 2020 Debt securities Equity securities Balance as of April 1, 2019 ¥ 5,439 ¥ 98,156 Total gains or losses: Profit or loss (28 ) — Other comprehensive income — (3,584 ) Purchases — 5,222 Sales — (40 ) Exchange differences on translating foreign operations (187 ) (246 ) Balance as of March 31, 2020 ¥ 5,224 ¥ 99,508 Unrealized gains or losses included in profit or loss on assets held at March 31, 2020 ¥ (28 ) ¥ — Explanatory notes: 1. Gains or losses included in profit or loss for the years ended March 31, 2019 and 2020 are included in other, net in finance income and finance costs in the consolidated statements of income. 2. Gains or losses on equity securities included in other comprehensive income for the years ended March 31, 2019 and 2020 are included in net changes in revaluation of financial assets measured at fair value through other comprehensive income under items that will not be reclassified to profit or loss in the consolidated statements of comprehensive income. (d) Financial Assets and Financial Liabilities measured at amortized cost The carrying amounts and fair values of financial assets and financial liabilities measured at amortized cost as of March 31, 2019 and 2020 are as follows: Yen (millions) 2019 2020 Carrying Fair value Carrying Fair value Receivables from financial services ¥ 5,405,250 ¥ 5,417,297 ¥ 5,161,165 ¥ 5,173,553 Debt securities 54,964 54,952 62,204 62,210 Financing liabilities 7,331,120 7,355,632 7,469,686 7,408,800 The table does not include financial assets and financial liabilities measured at amortized cost whose fair values approximate their carrying amounts.

Offsetting of Financial Assets

Offsetting of Financial Assets and Financial Liabilities	12 Months Ended
	Mar. 31, 2020
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Offsetting of Financial Assets and Financial Liabilities	(27) Offsetting of Financial Assets and Financial Liabilities The offsetting information regarding financial assets and financial liabilities as of March 31, 2019 and 2020 is as follows: Yen (millions) As of March 31, 2019 Gross amounts of Amounts offset Net amounts presented Amounts not offset due to not Net Amounts Other financial assets Derivatives ¥ 46,397 ¥ — ¥ 46,397 ¥ (34,407 ) ¥ 11,990 Other financial Derivatives 69,491 — 69,491 (34,407 ) 35,084 Yen (millions) As of March 31, 2020 Gross amounts of Amounts offset Net amounts presented Amounts not offset due to not Net Amounts Other financial assets Derivatives ¥ 95,804 ¥ — ¥ 95,804 ¥ ( 81 059 ) ¥ 1 4 745 Other financial Derivatives 115,168 — 115,168 (8 1 059 ) 3 4 109 Generally, the set-off

Commitments and Contingent Liab

Commitments and Contingent Liabilities	12 Months Ended
	Mar. 31, 2020
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Commitments and Contingent Liabilities	(28) Commitments and Contingent Liabilities (a) Commitments 1) Purchase commitments Commitments for purchases of property, plant and equipment and other commitments as of March 31, 2019 and 2020 are as follows: Yen (millions) 2019 2020 Commitments for purchases of property, plant and equipment and other commitments ¥ 99,379 ¥ 80,670 2) Non-cancellable Honda is the lessee under several operating leases, primarily for office and other facilities, and certain office equipment. Future minimum lease payments under non-cancelable Yen (millions) 2019 Within 1 year ¥ 23,733 Between 1 and 5 years 47,556 Later than 5 years 44,345 Total ¥ 115,634 Lease payments under operating leases recognized as expenses for the years ended March 31, 2018 and 2019 are as follows: Yen (millions) 2018 2019 Lease payments under operating leases recognized as expenses ¥ 35,180 ¥ 41,529 For the amounts of the lease liabilities by maturity as of March 31, 2020, see note “(25) Financial risk management (d) Liquidity Risk (1) Non-derivative (b) Claims and Lawsuits Honda is subject to potential liability under various lawsuits and claims. Honda recognizes a provision for loss contingencies when it is probable that an outflow of resources embodying economic benefits will be required to settle the obligation, and a reliable estimate can be made of the amount of the obligation. Honda reviews these pending lawsuits and claims periodically and adjusts the amounts recognized for these contingent liabilities, if necessary, by considering the nature of lawsuits and claims, the progress of the case and the opinions of legal counsel. With respect to product liability, personal injury claims or lawsuits, Honda believes that any judgment that may be recovered by any plaintiff for general and special damages and court costs will be adequately covered by Honda’s insurance and provision. Punitive damages are claimed in certain of these lawsuits. After consultation with legal counsel, and taking into account all known factors pertaining to existing lawsuits and claims, Honda believes that the ultimate outcome of such lawsuits and pending claims should not result in liability to Honda that would be likely to have an adverse material effect on its consolidated financial position or results of operations. Loss related to airbag inflators Honda has been conducting market-based measures in relation to airbag inflators. Honda recognizes a provision for specific warranty costs when it is probable that an outflow of resources embodying economic benefits will be required to settle the obligation, and a reliable estimate can be made of the amount of the obligation. There is a possibility that Honda will need to recognize additional provisions when new evidence related to the product recalls arise, however, it is not possible for Honda to reasonably estimate the amount and timing of potential future losses as of the date of this report. In the United States and Canada, various class action lawsuits and civil lawsuits related to the above mentioned market-based measures were filed against Honda. The plaintiffs claimed for properly functioning airbag inflators, compensation of economic losses including incurred costs and the decline in the value of vehicles, as well as punitive damages. Most of the class action lawsuits in the United States were transferred to the United States District Court for the Southern District of Florida and consolidated into a multidistrict class action litigation. For the year ended March 31, 2018, Honda has reached a settlement with the plaintiffs of the multidistrict class action litigation in the United States. Honda recognized the settlement of ¥53,739 million as selling, general and administrative expenses, which includes funds contributed to enhance airbag inflator recall activities. The final approval of the settlement from court was completed as July 31, 2018 (U.S. local time).

Structured Entities

Structured Entities	12 Months Ended
	Mar. 31, 2020
Investments accounted for using equity method [abstract]
Structured Entities	(29) Structured Entities Honda considers whether its control over structured entities exists under IFRS 10 “Consolidated Financial Statements”. Honda consolidates structured entities over which it has control, by comprehensively determining whether its control over the entity exists based on any contractual arrangements with such entity as well as the percentage of its voting or similar rights in the entity. The finance subsidiaries of the Company periodically securitize finance receivables and operating lease assets for liquidity and funding purposes. Securitized assets are transferred to structured entities that are established with the limited purpose of issuing asset-backed securities. The finance subsidiaries of the Company are deemed to have the power to direct the activities of these structured entities that most significantly impact the entities’ economic performance as they retain servicing rights, including the management of delinquencies and defaults of the finance receivables and beneficial interests in operating lease assets. Furthermore, the finance subsidiaries of the Company are deemed to have the obligation to absorb losses and the right to receive variable returns from these structured entities that could potentially be significant to these structured entities by retaining certain subordinated interests of these structured entities. Therefore, the Company is deemed to have substantial control over these entities and consolidates them. Investors in the asset-backed securities issued by these structured entities do not have recourse to the finance subsidiaries’ general credit with the exception of representations and warranties customary in the industry provided by the finance subsidiaries. There were no significant unconsolidated structured entities as of March 31, 2019 and 2020.

Related Parties

Related Parties	12 Months Ended
	Mar. 31, 2020
Text block [abstract]
Related Parties	(30) Related Parties (a) Related Party Transactions Honda mainly purchases materials, supplies and services from affiliates and joint ventures, and sells finished goods, parts used in its products, equipment and services to them in the ordinary course of business. Transactions with affiliates and joint ventures are generally made at values that approximate arm’s-length The balances of receivables and payables with affiliates and joint ventures as of March 31, 2019 and 2020 are as follows: Yen (millions) 2019 2020 Receivables: Affiliates ¥ 22,518 ¥ 19,120 Joint ventures 237,880 204,126 Total ¥ 260,398 ¥ 223,246 Payables: Affiliates ¥ 141,576 ¥ 108,267 Joint ventures 35,044 27,128 Total ¥ 176,620 ¥ 135,395 The amount of the transactions with affiliates and joint ventures for the years ended March 31, 2018, 2019 and 2020 are as follows: Yen (millions) 2018 2019 2020 Sales revenue: Affiliates ¥ 119,725 ¥ 113,814 ¥ 109,615 Joint ventures 744,435 724,712 722,896 Total ¥ 864,160 ¥ 838,526 ¥ 832,511 Purchase: Affiliates ¥ 1,407,755 ¥ 1,416,729 ¥ 1,241,314 Joint ventures 143,800 135,787 166,885 Total ¥ 1,551,555 ¥ 1,552,516 ¥ 1,408,199 Unrecognized commitment At the Board of Directors Meeting held on October 30, 2019, Honda has determined to conduct tender offers targeting our affiliates which are Keihin Corporation, Showa Corporation and Nissin Kogyo Co., Ltd. (collectively, the “Target Companies”), to obtain all of the common shares of the Target Companies (excluding the common shares of the Target Companies owned by Honda and treasury shares owned by the Target Companies), and to make the Target Companies our consolidated subsidiaries. Honda, Hitachi Automotive Systems, Ltd. (a consolidated subsidiary of Hitachi, Ltd.), the Target Companies and Hitachi, Ltd. entered into the basic contract (the “Basic Contract”) to conduct a management integration through implementation of the absorption-type merger in which Hitachi Automotive Systems, Ltd. will be the surviving company, and the Target Companies will be the disappearing companies (the “Absorption-type Merger”) after making the Target Companies our consolidated subsidiaries. Honda and Hitachi, Ltd. have agreed in the Basic Contract that in the Absorption-type Merger, common shares of the surviving company after the Absorption-type Merger (the “Integrated Company”) will be allotted to Honda as the consideration for the merger, in a merger ratio where the number of voting rights of the Integrated Company held by Honda will account for 33.4% of the number of voting rights held by all shareholders of the Integrated Company. Consequently, the Integrated Company will be our affiliate. Furthermore, the ratio of the total share value of the Target Companies as of the effective time of the Absorption-type Merger to Hitachi Automotive Systems, Ltd.’s share value does not necessarily correspond to the above merger ratio. Given the above, in order to have the ratio of the total share value of the Target Companies to Hitachi Automotive Systems, Ltd.’s share value correspond to the above merger ratio, the share values of the Target Companies will be adjusted through acquisitions of treasury shares by the Target Companies. The Basic Contract contains the terms that Honda to provide financial assistance including loans to the Target Companies at the interest rate generally available for other transaction and other terms and conditions depending upon the Target Companies’ financial need to achieve the adjustment of the share value. (b) Compensation to Key Management Compensation paid to the directors of the Company for the years ended March 31, 2018, 2019 and 2020 are as follows: Yen (millions) 2018 2019 2020 Remuneration ¥ 719 ¥ 732 ¥ 691 Bonus 231 172 101 Stock compensation — 125 140 Total ¥ 950 ¥ 1,029 ¥ 932 (c) Major Consolidated Subsidiaries Major consolidated subsidiaries as of March 31, 2020 are as follows: Company Country of Function Percentage Honda R&D Co., Ltd. Japan Research & Development 100.0 Honda Finance Co., Ltd. Japan Finance 100.0 American Honda Motor Co., Inc. U.S.A. Sales 100.0 Honda Aero., Inc. U.S.A. Manufacturing 100.0 Honda North America, Inc. U.S.A. Coordination of Subsidiaries Operation 100.0 Honda of America Mfg., Inc. U.S.A. Manufacturing 100.0 American Honda Finance Corporation U.S.A. Finance 100.0 Honda Aircraft Company, LLC U.S.A. Research & Development, Manufacturing and Sales 100.0 Honda Manufacturing of Alabama, LLC U.S.A. Manufacturing 100.0 Honda Manufacturing of Indiana, LLC U.S.A. Manufacturing 100.0 Honda Transmission Mfg. of America, Inc. U.S.A. Manufacturing 100.0 Honda R&D Americas, Inc. U.S.A. Research & Development 100.0 Honda Canada Inc. Canada Manufacturing and Sales 100.0 Honda Canada Finance Inc. Canada Finance 100.0 Honda de Mexico, S.A. de C.V. Mexico Manufacturing and Sales 100.0 Honda Motor Europe Limited U.K. Coordination of Subsidiaries 100.0 Honda of the U.K. Manufacturing Ltd. U.K. Manufacturing 100.0 Honda Finance Europe plc U.K. Finance 100.0 Honda Bank GmbH Germany Finance 100.0 Honda Turkiye A.S Turkey Manufacturing and Sales 100.0 Honda Motor (China) Investment Co., Ltd. China Coordination of Subsidiaries 100.0 Honda Auto Parts Manufacturing Co., Ltd. China Manufacturing 100.0 Honda Motorcycle & Scooter India (Private) Ltd. India Manufacturing and Sales 100.0 Honda Cars India Limited India Manufacturing and Sales 100.0 P.T. Honda Precision Parts Manufacturing Indonesia Manufacturing 100.0 P.T. Honda Prospect Motor Indonesia Manufacturing and Sales 51.0 Honda Malaysia Sdn Bhd Malaysia Manufacturing and Sales 51.0 Honda Taiwan Co., Ltd. Taiwan Sales 100.0 Asian Honda Motor Co., Ltd. Thailand Coordination of Subsidiaries Operation and Sales 100.0 Honda Leasing (Thailand) Co., Ltd. Thailand Finance 100.0 Honda Automobile (Thailand) Co., Ltd. Thailand Manufacturing and Sales 89.0 Thai Honda Manufacturing Co., Ltd. Thailand Manufacturing 83.0 A.P. Honda Co., Ltd. Thailand Sales 61.0 Honda Vietnam Co., Ltd. Vietnam Manufacturing and Sales 70.0 Honda Motor de Argentina S.A. Argentina Manufacturing and Sales 100.0 Honda South America Ltda. Brazil Coordination of Subsidiaries Operation 100.0 Banco Honda S.A. Brazil Finance 100.0 Honda Automoveis do Brasil Ltda. Brazil Manufacturing and Sales 100.0 Moto Honda da Amazonia Ltda. Brazil Manufacturing and Sales 100.0

Approval of Release of Consolid

Approval of Release of Consolidated Financial Statements	12 Months Ended
	Mar. 31, 2020
Text block [abstract]
Approval of Release of Consolidated Financial Statements	(31) Approval of Release of Consolidated Financial Statements The release of the consolidated financial statements was approved by Takahiro Hachigo, President and Representative Director, Chief Executive Officer and Kohei Takeuchi, Senior Managing Director and Chief Financial Officer on June 19, 2020.

Significant Accounting Polici_2

Significant Accounting Policies (Policies)	12 Months Ended
	Mar. 31, 2020
Statement [LineItems]
Basis of Consolidation	(a) Basis of Consolidation The consolidated financial statements include the accounts of the Company, its subsidiaries which are directly or indirectly controlled by the Company, and those structured entities which are controlled by Honda. All significant intercompany balances and transactions have been eliminated in consolidation. Honda controls an entity when Honda is exposed or has rights to variable returns from involvement with the entity, and has the ability to affect those returns by using its power, which is the current ability to direct the relevant activities, over the entity. To determine whether or not Honda controls an entity, status of voting rights or similar rights, contractual agreements and other specific factors are taken into consideration. Structured entities are entities designed so that voting or similar rights are not the dominant factor in deciding who controls the entity. Honda consolidates structured entities over which it has control, by comprehensively determining whether its control over the entity exists based on any contractual arrangements with such entity as well as the percentage of its voting or similar rights in the entity. The financial statements of subsidiaries are included in the consolidated financial statements from the date when the control is obtained until the date when the control is lost. The financial statements of subsidiaries have been adjusted in order to ensure consistency with the accounting policies adopted by the Company as necessary. Changes in the Company’s ownership interests in subsidiaries that do not result in a loss of control are accounted for as equity transactions. When control over a subsidiary is lost, the investment retained after the loss of control is remeasured at fair value as of the date of the loss of control, and any gain or loss on such remeasurement and disposal of the interest sold is recognized in profit or loss.
Investments in Affiliates and Joint Ventures (Investments Accounted for Using the Equity Method)	(b) Investments in Affiliates and Joint Ventures (Investments Accounted for Using the Equity Method) Affiliates are entities over which Honda has a significant influence over the decisions on financial and operating policies, but does not have control or joint control. Joint ventures are joint arrangements whereby the parties including Honda that have joint control have rights to the net assets of the arrangement. Joint arrangements are arrangements of which two or more parties have joint control, and joint control is the contractually agreed sharing of control of an arrangement, which exists only when decisions about the relevant activities require the unanimous consent of the parties sharing control. Investments in affiliates and joint ventures are accounted for using the equity method from the date when the investees are determined to be affiliates or joint ventures until the date when they ceased to be classified as affiliates or joint ventures. Under the equity method, the investment is initially recognized at cost, and the carrying amount is subsequently increased or decreased, to recognize Honda’s share of profit or loss and other comprehensive income of the affiliate or the joint venture after the date of initial recognition. The financial statements of affiliates and joint ventures have been adjusted in order to ensure consistency with the accounting policies adopted by the Company in applying the equity method, as necessary. The use of the equity method is discontinued from the date when the investees are determined to be no longer affiliates or joint ventures. The investment retained after cessation of the equity method is remeasured at fair value, and any gain or loss on such remeasurement and disposal of the investment is recognized in profit or loss.
Foreign Currency Translations	(c) Foreign Currency Translations 1) Foreign currency transactions Foreign currency transactions are translated into the respective functional currencies at the exchange rates prevailing when such transactions occur. All foreign currency receivables and payables are translated into the respective functional currencies at the applicable exchange rates at the end of the reporting period. Gains or losses on exchange differences arising on settlement of foreign currency receivables and payables or on their translations at the end of the reporting date are recognized in profit or loss and they are included in finance income and finance costs-other, net in the consolidated statements of income. 2) Foreign operations All assets and liabilities of foreign subsidiaries, affiliates and joint ventures (collectively “foreign operations”), which use a functional currency other than Japanese yen, are translated into Japanese yen at the exchange rates at the end of the reporting period. All revenues and expenses of foreign operations are translated into Japanese yen at the average exchange rate for the period except when a functional currency is the currency of a hyperinflationary economy. Exchange differences arising from translation are recognized in other comprehensive income and accumulated in other components of equity in the consolidated statements of financial position. When a foreign operation is disposed of, and control, significant influence or joint control over the foreign operation is lost, the cumulative amount of exchange differences relating to the foreign operation is reclassified from equity to profit or loss.
Financial Instruments	(d) Financial Instruments A financial instrument is a contract that gives rise to a financial asset of one entity and a financial liability or equity security of another entity. When Honda becomes a party to the contractual provision of a financial instrument, the financial instrument is recognized either as a financial asset or as a financial liability. When Honda purchases or sells a financial asset, the financial asset is recognized or derecognized at the trade date. 1) Non-derivative Honda classifies financial assets other than derivatives into “financial assets measured at amortized cost”, “financial assets measured at fair value through other comprehensive income” or “financial assets measured at fair value through profit or loss”. Honda determines the classification of financial assets upon initial recognition. Financial assets are derecognized when the contractual rights to cash flows from the financial assets expire, or when the contractual rights to receive the cash flows from the financial assets are transferred and all risks and rewards of ownership of the financial assets are substantially transferred. Financial assets measured at amortized cost A financial asset is classified into financial assets measured at amortized cost when the asset is held within a business model whose objective is to hold the asset in order to collect the contractual cash flows, and the contractual term of the financial asset gives rise on specified dates to cash flows that are solely payments of principal and interest on the principal amount outstanding. Financial assets measured at amortized cost except trade receivables arising from contracts with customers are initially measured at their fair value and trade receivables arising from contracts with customers are initially measured at their transaction price. Financial assets measured at amortized cost are subsequently measured at amortized cost using the effective interest method. Financial assets measured at fair value A financial asset other than a financial asset measured at amortized cost is classified into financial assets measured at fair value. The financial assets measured at fair value are further classified into the following categories: Financial assets measured at fair value through other comprehensive income A debt security is classified into financial assets measured at fair value through other comprehensive income when the asset is held within a business model whose objective is achieved by both collecting contractual cash flows and selling financial assets, and the contractual terms of the financial asset give rise on specified dates to cash flows that are solely payments of principal and interest on the principal amount outstanding. The debt securities are initially measured at their fair value, and subsequent changes in fair value are recognized in other comprehensive income except for impairment gain or loss and foreign exchange gain or loss. When the debt securities are derecognized, the cumulative gain or loss previously recognized in other comprehensive income is reclassified from equity to profit or loss. For the year ended March 31, 2018, the debt securities are classified into financial assets measured at fair value through profit or loss. Honda elects to designate investments in equity securities such as shares, held for maintaining and strengthening the trade relationship as financial assets measured at fair value through other comprehensive income. Equity securities designated as financial assets measured at fair value through other comprehensive income are initially measured at their fair value, and subsequent changes in fair value of the investment are recognized in other comprehensive income. However, dividends from the equity securities are principally recognized in profit or loss. When the equity securities are derecognized, the cumulative gain or loss previously recognized in other comprehensive income is directly reclassified to retained earnings. Financial assets measured at fair value through profit or loss Financial assets measured at fair value other than financial assets measured at fair value through other comprehensive income are classified into financial assets measured at fair value through profit or loss. Financial assets measured at fair value through profit or loss are initially measured at their fair value, and subsequent changes in fair value are recognized in profit or loss. (Cash and cash equivalents) Cash and cash equivalents consist of cash on hand, demand deposits, and short-term highly liquid investments that are readily convertible to known amounts of cash and are subject to insignificant risk of changes in value. Honda includes all highly liquid debt instruments with original maturities of three months or less in cash equivalents. 2) Non-derivative Financial liabilities other than derivatives are initially measured at their fair value, and are subsequently measured at amortized cost using the effective interest method. Financial liabilities are derecognized, when the obligations specified in the contract are discharged, canceled or expire. 3) Derivatives Honda has entered into foreign exchange and interest rate agreements to manage currency and interest rate exposures. These agreements include foreign currency forward exchange contracts, currency option contracts, currency swap agreements and interest rate swap agreements. All these derivatives are initially recognized as assets or liabilities and measured at fair value, when Honda becomes a party to the contractual provision of the derivatives. Subsequent changes in fair value of derivatives are recognized in profit or loss in the period of the changes. Honda has not held any derivatives designated as hedging instruments for the years ended March 31, 2018, 2019 and 2020. 4) Offsetting of financial assets and financial liabilities Financial assets and financial liabilities are offset and the net amount is presented in the consolidated statements of financial position, only when Honda currently has a legally enforceable right to offset the recognized amounts, and intends either to settle on a net basis or to realize the asset and settle the liability simultaneously.
Inventories	(e) Inventories Inventories are measured at the lower of cost and net realizable value. The cost of inventories includes purchase costs and conversion costs, and it is determined principally by using the first-in first-out
Intangible Assets	(h) Intangible Assets Intangible assets are measured based on the cost model and carried at their cost less accumulated amortization and impairment losses. (Research and development) Development expenditure for a product is capitalized only when there is a technical and commercial feasibility of completing the development, Honda has intention, ability and sufficient resources to use the outcome of the development, it is probable that the outcome will generate a future economic benefit, and the cost can be measured reliably. Capitalized development cost is measured at the sum of expenditures for development incurred between when the foregoing conditions for capitalization are initially met and when the development is completed, and includes all directly attributable costs to the development process. Capitalized development cost is amortized using the straight-line method over the expected product life cycle of the developed product ranging mainly from 2 to 6 years. Expenditures on research and other development expenditures which do not meet the foregoing conditions are expensed as incurred. (Other intangible asset) Other intangible assets are initially measured at cost and principally amortized using the straight-line method over their estimated useful lives. Other intangible assets are mainly comprised of software for internal use whose estimated useful lives range from 3 to 5 years. The amortization method and useful lives of intangible assets are reviewed annually at each fiscal year end, and adjusted prospectively, if appropriate.
Lease	(i) Lease Policy applicable from April 1, 2019 At inception of a contract, Honda assesses whether a contract is, or contains, a lease. A contract is, or contains, a lease if the contract conveys the right to control the use of an identified asset for a period of time in exchange for consideration. When Honda has the right to obtain substantially all of the economic benefits from use of the identified asset throughout the period of use and the right to direct the use of the identified asset, the contract conveys the right to control the use of the identified asset. 1) Lease as a lessee A right-of-use right-of-use non-lease non-lease non-lease The right-of-use right-of-use The lease liability is initially measured at the present value of the lease payments that are not paid at the commencement date, discounted using the interest rate implicit in the lease or, if that rate cannot be readily determined, Honda’s incremental borrowing rate. Lease payments included in the measurement of the lease liability comprise mainly the fixed payments (including the lease payments in an optional renewal period if Honda is reasonably certain to exercise the extension option) and the penalties for termination of a lease unless Honda is reasonably certain not to terminate early. After the initial recognition, the lease liability is measured by increasing the carrying amount to reflect interest that produces a When the lease liability is remeasured, the amount of the remeasurement of the lease liability is recognized as an adjustment to the right-of-use right-of-use 2) Lease as a lessor For a contract that is, or contains a lease, the lease is classified as a finance lease if it transfers substantially all the risks and rewards incidental to ownership of an underlying asset and Honda assesses the lease classification of a sub-lease right-of-use The finance subsidiaries of the Company engage in the business of leasing vehicles as a lessor. A receivable from customer held under a finance lease is initially recognized at the amount of net investment in the lease which is the gross investment in the lease discounted at the interest rate implicit in the lease, and included in receivables from financial services in the consolidated statements of financial position. Vehicles subject to operating leases are presented as equipment on operating leases in the consolidated statements of financial position. If a contract contains lease and non-lease Policy applicable before April 1, 2019 An arrangement that is or contains a lease is determined based on the substance of the arrangement by assessment of whether the fulfillment of that arrangement depends on use of a specific asset or group of assets, and whether a right to use the asset is transferred under the arrangement. When an arrangement is or contains a lease, the lease is classified as a finance lease if it transfers substantially all the risks and rewards incidental to the ownership, based on the substance of the arrangement. Leases other than finance lease are classified as operating lease. 1) Lease as a lessee A leased asset and liability for the future lease payment under a finance lease are initially recognized at the lower of fair value of the leased asset or the present value of the minimum lease payments, each determined at inception of the lease. After the initial recognition, the leased asset is accounted for according to the accounting policies applied to the asset. Lease payments under a finance lease are apportioned between the finance cost and the reduction in the carrying amount of the liability. Lease payments under an operating lease are recognized as an expense on a straight-line basis over the lease term. 2) Lease as a lessor The finance subsidiaries of the Company engage in the business of leasing vehicles as a lessor. A receivable from customer held under a finance lease is initially recognized at the amount of net investment in the lease which is the gross investment in the lease discounted at the interest rate implicit in the lease, and included in receivables from financial services in the consolidated statements of financial position. After the initial recognition, the receivable under finance lease is accounted for in accordance with the accounting policies applied to financial assets. Vehicles subject to operating leases are presented as equipment on operating leases in the consolidated statements of financial position.
Impairment	(j) Impairment 1) Financial assets measured at amortized cost and debt securities classified into financial assets measured at fair value through other comprehensive income Policy applicable from April 1, 2018 The allowance for impairment losses of financial assets measured at amortized cost other than trade receivables and debt securities classified into financial assets measured at fair value through other comprehensive income is measured at amounts according to the three-stage expected credit loss (ECL) model: Stage 1 12-month Stage 2 Lifetime ECL for financial assets with a significant increase in credit risk since initial recognition but that are not credit-impaired Stage 3 Lifetime ECL for credit-impaired financial assets The allowance for impairment losses of trade receivables is continuously measured at amounts equal to lifetime ECL. Lifetime ECL represents ECL that results from all possible default events over the expected life of a financial asset. 12-month Receivables from financial services – Allowance for credit losses The allowance for credit losses is management’s estimate of expected credit loss on receivables from financial services. To determine whether credit risk has increased significantly, consumer finance receivables are assessed both individually and collectively. Individual assessments are based on delinquencies. Consumer finance receivables 30 days or greater past due have historically experienced increased default rates and therefore are considered to have a significant increase in credit risk. Collective assessments are performed for groups of consumer finance receivables with shared risk characteristics such as the period of initial recognition, collateral type, original term, and credit score considering relative changes in expected default rates since initial recognition. Dealer finance receivables are assessed at the individual dealership level to determine whether credit risk has increased significantly considering payment performance and other factors such as changes in the financial condition of the dealership and compliance with debt covenants. Our definition of default on receivables from financial services varies depending on internal risk management practices of each of our finance subsidiaries. Our most significant finance subsidiary located in the United States considers delinquencies of 60 days past due to be in default. Collection efforts on consumer finance receivables are escalated after becoming 60 days past due including repossession of the underlying vehicles if it has been determined that the borrower is unable to perform on their obligations. Defaulted consumer finance receivables are considered to be credit-impaired. Dealer finance receivables are considered to be credit-impaired when there is evidence we will be unable to collect all amounts due in accordance with the original contractual terms including significant financial difficulty of the dealership, a breach of contract, such as a default or delinquency, or bankruptcy. At the finance subsidiary in the United States, the estimated uncollectible portion of consumer finance receivables are written-off written-off At the finance subsidiary in the United States, ECL of consumer finance receivables is measured for groups of financial assets with shared risk characteristics by reflecting historical results, current conditions and forward-looking factors such as unemployment rates, used vehicles prices, and consumer debt service burdens. Receivables from financial services – Allowance for losses on lease residual values The allowance for losses on lease residual values is management’s estimate of probable losses arising from declines in the estimated lease residual values incurred on receivables from finance leases. The finance subsidiaries of the Company purchase insurance to cover a substantial amount of the estimated residual value of a part of vehicles leased as finance leases to customers. The allowance for losses on lease residual values are maintained at an amount management deems adequate to cover estimated losses on the uninsured portion of the vehicles’ lease residual values. The allowance is also based on management’s evaluation of many factors, including current economic conditions, industry experience and the finance subsidiaries’ historical experience with residual value losses. Policy applicable before April 1, 2018 At the end of each reporting period, based on individual assets or assets grouped according to credit risk characteristics, financial assets measured at amortized cost are assessed to determine whether there is objective evidence that a financial asset or group of financial assets is impaired. Objective evidence of impairment includes significant financial difficulty of the issuer or the borrowers, a default or delinquency in interest or principal payments, an increase in the probability of bankruptcy or other financial restructuring of the issuer, and disappearance of an active market for the security. If there is an objective evidence that financial assets measured at amortized cost is impaired, the amount of impairment loss is measured as the difference between the carrying amount of the assets and its present value which is calculated by discounting estimated future cash flows using the asset’s original effective interest rate. The impairment loss is recognized in profit or loss, by deducting the carrying amount of the financial assets directly or through an allowance account. Further, if, in a subsequent period, the amount of impairment loss decreases and the decrease can be related objectively to an event occurring after impairment was recognized, the impairment loss which was recorded in prior periods is reversed and recognized in profit or loss. Receivables from financial services – Allowance for credit losses The allowance for credit losses is management’s estimate of probable losses incurred on receivables from financial services. Estimated losses on past due operating lease rental payments are also recognized through an allowance for credit losses. Consumer finance receivables are collectively evaluated for impairment. Delinquencies and losses are continuously monitored and this historical experience provides the primary basis for estimating the allowance. Various methodologies are utilized when estimating the allowance for credit losses including models that incorporate vintage loss and delinquency migration analysis. The models take into consideration attributes of the portfolio including loan-to-value Dealer finance receivables are individually evaluated for impairment when specifically identified as impaired. Dealer finance receivables are considered to be impaired when it is probable that the finance subsidiaries of the Company will be unable to collect all amounts due according to the original terms of the loan. The determination of whether dealer loans are impaired is based on evaluations of dealerships’ payment history, financial condition and cash flows, and their ability to perform under the terms of the loans. Dealer loans that have not been specifically identified as impaired are collectively evaluated for impairment. Receivables from financial services – Allowance for losses on lease residual values The allowance for losses on lease residual values is management’s estimate of probable losses arising from declines in the estimated lease residual values incurred on receivables from finance leases. The finance subsidiaries of the Company purchase insurance to cover a substantial amount of the estimated residual value of a part of vehicles leased as finance leases to customers. The allowance for losses on lease residual values are maintained at an amount management deems adequate to cover estimated losses on the uninsured portion of the vehicles’ lease residual values. The allowance is also based on management’s evaluation of many factors, including current economic conditions, industry experience and the finance subsidiaries’ historical experience with residual value losses. 2) Non-financial At the end of the reporting period, the carrying amount of non-financial For investments accounted for using the equity method, the entire carrying amount of each investment in affiliates and joint ventures is tested for impairment as a single asset, when there is objective evidence that the investments accounted for using the equity method may be impaired. The recoverable amount of an individual asset or a cash-generating unit is the higher of fair value less costs to sell and value in use. Value in use is determined as the present value of future cash flows expected to be derived from an asset or a cash-generating unit. A cash-generating unit is determined as the smallest identifiable group of assets that generate cash inflows which are largely independent of cash inflows from other assets or a group of assets. When it is not possible to estimate the recoverable amount of the individual asset, the recoverable amount of the cash-generating unit to which the asset belongs is estimated. When the carrying amount of an asset or a cash-generating unit exceeds the recoverable amount, the carrying amount is reduced to the recoverable amount and an impairment loss is recognized in profit or loss. An impairment loss for a cash-generating unit is allocated to the assets on the basis of the relative carrying amount of each asset in the unit. An impairment loss recognized for an asset or a cash-generating unit in prior period is reversed, if there is any indication that the impairment loss may have decreased or may no longer exist, and when the recoverable amount of the asset exceeds the carrying amount. If this is the case, the carrying amount of the asset is increased to its recoverable amount, but the increased carrying amount does not exceed the carrying amount (net of depreciation or amortization) calculated on the basis that no impairment loss had occurred in the prior period.
Provisions	(k) Provisions Provisions are recognized when Honda has present legal or constructive obligation as a result of past events, it is probable that an outflow of resources embodying economic benefits will be required to settle the obligation, and a reliable estimate can be made of the amount of the obligation. Provisions are measured based on the best estimate of expenditure required to settle the present obligation at the end of the reporting period. Where the effect of the time value of money is material, a provision is measured at the present value of the expenditures required to settle the obligation. In calculating the present value, a pre-tax
Employee Benefits	(l) Employee Benefits 1) Short-term employee benefits For short-term employee benefits including salaries, bonuses and paid annual leave, when the employees render related services, the amounts expected to be paid in exchange for those services are recognized as expenses. 2) Post-employment benefits Honda has various post-employment benefit plans including defined benefit plans and defined contribution plans. Defined benefit plans For defined benefit plans, the present value of defined benefit obligations less the fair value of plan assets is recognized as either liability or asset in the consolidated statements of financial position. The present value of defined benefit obligations and service cost are principally determined for each plan using the projected unit credit method. The discount rate is determined by reference to market yields at the end of the reporting period on high quality corporate bonds that is consistent with the currency and estimated term of the post-employment benefit obligation. Net interest on the net defined benefit liability (asset) for the reporting period is determined by multiplying the net defined benefit liability (asset) by the discount rate. Past service cost defined as the change in the present value of the defined benefit obligation resulting from a plan amendment or curtailment is recognized in profit or loss upon occurrence of the plan amendment or curtailment. Honda recognizes the difference arising from remeasurement of present value of the defined benefit obligations and the fair value of the plan assets in other comprehensive income when it is incurred, and reclassifies it immediately to retained earnings. Defined contribution plans For defined contribution plans, when the employees render related services, the contribution payables to defined contribution plan are recognized as expenses.
Equity	(m) Equity 1) Common share Common share issued by the Company is classified as equity, and the proceeds from issuance of common share are included in common stock and capital surplus. 2) Treasury stock Treasury stock acquired by Honda is recognized at cost and deducted from equity. When treasury stock is sold, the consideration received is recognized as equity with the difference between the carrying amount and the consideration received included in capital surplus.
Revenue Recognition	(n) Revenue Recognition 1) Sale of products Sales of products are reported by Motorcycle business, Automobile business, Life creation business and other businesses. For details of the information on each business, see note 4. Honda recognizes revenue when control over products is transferred to customers. This transfer generally corresponds to the date of delivery of products to customers. Revenue is measured based on consideration specified in a contract with customer and excludes amounts collected on behalf of third parties. The total consideration in the contract is allocated to all products and services based on their stand-alone selling prices. The stand-alone selling prices are determined with reference to the selling prices of similar products or services and other reasonably available information. For the year ended March 31, 2018, revenue from sale of products was recognized when the significant risks and rewards of ownership of products were transferred to the customer, Honda retained neither continuous involvement nor effective control over the product, the amount of revenue and the corresponding cost could be measured reliably and collection of the relevant receivable was reasonably assured. This generally corresponded to the date of delivery of products to customers. Honda provides dealer incentives, which generally represent discounts provided from Honda to the dealer. Honda also provides incentive programs generally in the form of below-market interest rate loans or lease programs for the retail customers to enhance dealer’s sales activities. The amount incurred for these programs is calculated based on the difference between the interest or lease rate offered to retail customers and the market-based interest or lease rate. These incentives are considered variable consideration when determining the transaction price and they are deducted from sales revenue recognized when products are sold to the dealers. Revenue is recognized only to the extent that it is highly probable that a significant reversal will not occur when the uncertainty associated with the variable consideration is subsequently resolved. For the year ended March 31, 2018, these incentives were estimated and recognized at the time the product was sold to the dealer and were deducted from sales revenue. Customers usually pay consideration for sales of products within 30 days from the transfers of control over the products to customers. In addition, product sales contracts with customers include warranty clauses to guarantee that the products comply with agreed-upon specifications and Honda recognizes provisions for product warranties to meet these guarantees. For more information on product warranties, see note 17. 2) Rendering of financial services Interest income from receivables from financial services is recognized using the effective interest method. Finance receivable origination fees and certain direct origination costs are included in the calculation of the effective interest rate, and the net fee or cost is amortized using the effective interest method over the contractual term of the finance receivables. The finance subsidiaries of the Company offer financial services that contain a lease. Interest income from receivables held under a finance lease is recognized using the effective interest method. When Honda is the manufacturer or dealer lessor, sales revenue and the corresponding cost for a portion identified as sale of products is recognized in profit or loss in accordance with the policy on revenue recognition for sale of products. Revenue from operating leases is recognized on a straight-line basis over the term of the lease.
Income Taxes	(o) Income Taxes Income tax expenses are presented as the aggregate amount of current taxes and deferred taxes. Current taxes and deferred taxes are recognized in profit or loss, except for the tax arising from a transaction which is recognized either in other comprehensive income or directly in equity. Current taxes are measured at the amount expected to be paid to (or recovered from) the taxation authorities in respect of the taxable profit (or tax loss) for the reporting period, using the tax rates and tax laws enacted or substantively enacted at the end of the reporting period. Deferred tax assets and liabilities are recognized for future tax consequences attributable to temporary differences between the carrying amount of assets or liabilities in the consolidated statements of financial position and the tax base of the assets or liabilities and carryforward of unused tax losses and tax credits. Deferred tax assets are recognized to the extent that it is probable that taxable profit will be available against which the deductible temporary differences, unused tax losses, and unused tax credits can be utilized. Deferred tax liabilities for taxable temporary differences related to investments in subsidiaries and affiliates, and interest in joint ventures are not recognized to the extent that Honda is able to control the timing of the reversal of the temporary differences and it is probable that they will not reverse in the foreseeable future. Deferred tax assets for deductible temporary differences arising from investments in subsidiaries and affiliates, and interest in joint ventures are recognized to the extent that it is probable that the temporary differences will reverse in the foreseeable future and taxable profit will be available against which they can be utilized. Deferred tax assets and liabilities are measured at the tax rates that are expected to apply in the period when the assets are realized or the liabilities are settled, based on the tax rates and tax laws enacted or substantively enacted at the end of the reporting period. The measurement of deferred tax assets and liabilities reflects the tax consequences that would follow from the manner in which Honda expects, at the end of reporting period, to recover or settle the carrying amount of its assets and liabilities. Honda reviews the carrying amount of deferred tax assets at the end of each reporting period, and reduces the carrying amount of deferred tax assets to the extent that it is no longer probable that sufficient taxable profit will be available to allow the benefit of part or all of that deferred tax assets to be utilized. Deferred tax assets and deferred tax liabilities are offset, only when Honda has a legally enforceable right to set off current tax assets against current tax liabilities, and the same taxation authority levies income taxes either on the same taxable entity or on different taxable entity which intends either to settle current tax liabilities and assets on a net basis or to realize the assets and settle the liabilities simultaneously. Honda reflects the effect of uncertainty in the consolidated financial statements if Honda concludes it is not probable that the taxation authority will accept the tax treatment.
Earnings per Share	(p) Earnings per Share Basic earnings per share is calculated by dividing profit for the year attributable to owners of the parent by the weighted average number of common shares outstanding during the period.
Equipment on operating leases [member]
Statement [LineItems]
Property, Plant and Equipment	(f) Equipment on Operating Leases Equipment on operating leases is measured based on the cost model and carried at its cost less accumulated depreciation and impairment losses. A vehicle subject to operating lease is initially measured at its cost. Depreciation of equipment on operating leases is calculated on the straight-line method over the lease term. The depreciable amount is the cost of the vehicle less its residual value which is estimated by using the estimate of future used vehicle value, taking into consideration external industry data and Honda’s historical experience.
Property, plant and equipment [member]
Statement [LineItems]
Property, Plant and Equipment	(g) Property, Plant and Equipment Property, plant and equipment is measured based on the cost model and carried at its cost less accumulated depreciation and impairment losses. Property, plant and equipment is initially measured at its cost. Subsequent expenditures on an item of property, plant and equipment acquired, are recognized in the carrying amount of the item, only when it is probable that the expenditure will generate a future economic benefit. Depreciation of property, plant and equipment, except for land that is not subject to depreciation, is calculated on the straight-line method over the estimated useful life. The depreciable amount is the cost of the asset less the respective estimated residual values. The estimated useful lives used in calculating depreciation of property, plant and equipment are mainly as follows: • Buildings and structures: 3 to 50 years • Machinery and equipment: 2 to 20 years The depreciation method, useful lives and residual values of property, plant and equipment are reviewed annually at each fiscal year end, and adjusted prospectively, if appropriate. Property, plant and equipment in the consolidated statements of financial position include right-of-use right-of-use

Basis of Preparation (Tables)

Basis of Preparation (Tables)	12 Months Ended
	Mar. 31, 2020
Text block [abstract]
Summary of reconcilation of lease liabilities after adoption of new standard	The difference between the future minimum lease payments under non-cancelable Yen(millions) Future minimum lease payments under non-cancelable as of March 31, 2019 115,634 Discounted using the incremental borrowing rate as of April 1, 2019 108,147 Add: Finance lease obligations 62,308 Add: Cancelable operating leases 11,612 Add: Extension options reasonably certain to be exercised 152,473 Lease liabilities recognized as of April 1, 2019 334,540

Segment Information (Tables)

Segment Information (Tables)	12 Months Ended
	Mar. 31, 2020
Text block [abstract]
Summary of Segment Information	Segment information as of and for the years ended March 31, 2018, 2019 and 2020 is as follows: As of and for the year ended March 31, 2018 Yen (millions) Motorcycle Automobile Financial Life Segment Reconciling Consolidated Sales revenue: External customers ¥ 2,038,712 ¥ 10,852,171 ¥ 2,123,194 ¥ 347,069 ¥ 15,361,146 ¥ — ¥ 15,361,146 Intersegment — 193,038 14,071 24,097 231,206 (231,206 ) — Total 2,038,712 11,045,209 2,137,265 371,166 15,592,352 (231,206 ) 15,361,146 Segment profit (loss) ¥ 267,015 ¥ 373,840 ¥ 196,067 ¥ (3,364 ) ¥ 833,558 ¥ — ¥ 833,558 Share of profit of investments accounted for using the equity method ¥ 31,270 ¥ 215,843 ¥ — ¥ 530 ¥ 247,643 ¥ — ¥ 247,643 Segment assets 1,533,367 7,879,769 9,409,243 314,838 19,137,217 211,947 19,349,164 Investments accounted for using the equity method 89,498 584,922 — 5,097 679,517 — 679,517 Depreciation and amortization 74,128 616,321 748,503 15,164 1,454,116 — 1,454,116 Capital expenditures 63,927 514,910 1,801,554 14,243 2,394,634 — 2,394,634 Impairment losses on non-financial 42 3,648 11,911 4 15,605 — 15,605 Provision for credit and lease residual losses on receivables from financial services — — 36,699 — 36,699 — 36,699 As of and for the year ended March 31, 2019 Yen (millions) Motorcycle Automobile Financial Life Segment Reconciling Consolidated Sales revenue: External customers ¥ 2,100,155 ¥ 11,072,117 ¥ 2,365,355 ¥ 350,990 ¥ 15,888,617 ¥ — ¥ 15,888,617 Intersegment — 215,647 14,687 26,266 256,600 (256,600 ) — Total 2,100,155 11,287,764 2,380,042 377,256 16,145,217 (256,600 ) 15,888,617 Segment profit (loss) ¥ 291,642 ¥ 209,694 ¥ 235,945 ¥ (10,911 ) ¥ 726,370 ¥ — ¥ 726,370 Share of profit of investments accounted for using the equity method ¥ 29,704 ¥ 198,505 ¥ — ¥ 618 ¥ 228,827 ¥ — ¥ 228,827 Segment assets 1,523,817 7,923,802 10,236,066 328,870 20,012,555 406,567 20,419,122 Investments accounted for using the equity method 88,494 619,091 — 5,454 713,039 — 713,039 Depreciation and amortization 66,680 603,124 784,683 14,198 1,468,685 — 1,468,685 Capital expenditures 74,024 525,419 2,041,735 16,074 2,657,252 — 2,657,252 Impairment losses on non-financial 1,404 32,674 12,716 14 46,808 — 46,808 Provision for credit and lease residual losses on receivables from financial services — — 34,720 — 34,720 — 34,720 As of and for the year ended March 31, 2020 Yen (millions) Motorcycle Automobile Financial Life Segment Reconciling Consolidated Sales revenue: External customers ¥ 2,059,335 ¥ 9,959,080 ¥ 2,586,965 ¥ 325,629 ¥ 14,931,009 ¥ — ¥ 14,931,009 Intersegment — 235,558 13,972 25,025 274,555 (274,555 ) — Total 2,059,335 10,194,638 2,600,937 350,654 15,205,564 (274,555 ) 14,931,009 Segment profit (loss) ¥ 285,668 ¥ 153,323 ¥ 219,704 ¥ (25,058 ) ¥ 633,637 ¥ — ¥ 633,637 Share of profit of investments accounted for using the equity method ¥ 34,526 ¥ 129,114 ¥ — ¥ 563 ¥ 164,203 ¥ — ¥ 164,203 Segment assets 1,483,888 7,821,499 10,282,136 354,472 19,941,995 519,470 20,461,465 Investments accounted for using the equity method 83,144 566,582 — 5,749 655,475 — 655,475 Depreciation and amortization 67,512 555,153 823,996 14,742 1,461,403 — 1,461,403 Capital expenditures 93,871 498,260 2,248,597 17,611 2,858,339 — 2,858,339 Impairment losses on non-financial 345 57,817 36,039 15 94,216 — 94,216 Provision for credit and lease residual losses on receivables from financial services — — 56,894 — 56,894 — 56,894 Explanatory notes: 1. Segment profit (loss) of each segment is measured in a consistent manner with consolidated operating profit, which is profit before income taxes before share of profit of investments accounted for using the equity method and finance income and finance costs. Expenses not directly associated with specific segments are allocated based on the most reasonable measures applicable. 2. Segment assets of each segment are defined as total assets including investments accounted for using the equity method, derivatives, and deferred tax assets. Segment assets are based on those directly associated with each segment and those not directly associated with specific segments are allocated based on the most reasonable measures applicable except for the corporate assets described below. 3. Intersegment sales revenues are generally made at values that approximate arm’s-length 4. Reconciling items include elimination of intersegment transactions and balances as well as unallocated corporate assets. Unallocated corporate assets, included in reconciling items as of March 31, 2018, 2019 and 2020 amounted to ¥519,780 million, ¥682,842 million and ¥787,022 million, respectively, which consist primarily of the Company’s cash and cash equivalents and financial assets measured at fair value through other comprehensive income. 5. Provisions for product warranties accrued for the years ended March 31, 2018, 2019 and 2020 are ¥219,575 million, ¥247,194 million and ¥21 2 275 6. The amounts of write-down of inventories recognized as an expense for the years ended March 31, 2018, 2019 and 2020 are ¥67,768 million, ¥32,565 million and ¥37,752 million respectively. These are related to Automobile business and aircraft and aircraft engines, which are included in Life creation and other businesses.
Sales Revenue by Product or Service Groups	Sales revenue by product or service groups of Honda for the years ended March 31, 2018, 2019 and 2020 is as follows: Yen (millions) 2018 2019 2020 Motorcycles and relevant parts ¥ 1,919,232 ¥ 1,986,968 ¥ 1,921,065 All-terrain side-by-sides 119,480 113,187 138,270 Automobiles and relevant parts 11,813,125 12,173,065 11,199,477 Financial services 1,162,240 1,264,407 1,346,568 Power products and relevant parts 266,233 266,012 243,251 Others 80,836 84,978 82,378 Total ¥ 15,361,146 ¥ 15,888,617 ¥ 14,931,009
Sales Revenue and Carrying Amounts of Non-current Assets Other Than Financial Instruments and Deferred Tax Assets Based on Location	The sales revenue and carrying amounts of non-current As of and for the year ended March 31, 2018 Yen (millions) Japan United States Other Countries Total Sales revenue ¥ 2,240,033 ¥ 7,028,633 ¥ 6,092,480 ¥ 15,361,146 Non-current ¥ 2,580,515 ¥ 3,784,531 ¥ 1,696,056 ¥ 8,061,102 As of and for the year ended March 31, 2019 Yen (millions) Japan United States Other Countries Total Sales revenue ¥ 2,394,584 ¥ 7,480,382 ¥ 6,013,651 ¥ 15,888,617 Non-current ¥ 2,695,603 ¥ 3,956,228 ¥ 1,685,874 ¥ 8,337,705 As of and for the year ended March 31, 2020 Yen (millions) Japan United States Other Countries Total Sales revenue ¥ 2,307,523 ¥ 7,091,136 ¥ 5,532,350 ¥ 14,931,009 Non-current ¥ 3,003,416 ¥ 4,007,268 ¥ 1,573,982 ¥ 8,584,666
Supplemental Geographical Information Based on Location	Supplemental geographical information based on the location of the Company and its subsidiaries As of and for the year ended March 31, 2018 Yen (millions) Japan North America Europe Asia Other Regions Total Reconciling Items Consolidated Sales revenue: External customers ¥ 2,240,033 ¥ 8,067,455 ¥ 680,497 ¥ 3,541,680 ¥ 831,481 ¥ 15,361,146 ¥ — ¥ 15,361,146 Inter-geographic areas 2,240,651 517,150 236,717 679,340 6,043 3,679,901 (3,679,901 ) — Total 4,480,684 8,584,605 917,214 4,221,020 837,524 19,041,047 (3,679,901 ) 15,361,146 Operating profit (loss) ¥ 86,916 ¥ 278,476 ¥ 15,837 ¥ 402,620 ¥ 43,831 ¥ 827,680 ¥ 5,878 ¥ 833,558 Assets ¥ 4,405,523 ¥ 10,651,191 ¥ 727,045 ¥ 2,942,053 ¥ 659,781 ¥ 19,385,593 ¥ (36,429 ) ¥ 19,349,164 Non-current ¥ 2,580,515 ¥ 4,530,019 ¥ 105,649 ¥ 683,006 ¥ 161,913 ¥ 8,061,102 ¥ — ¥ 8,061,102 As of and for the year ended March 31, 2019 Yen (millions) Japan North America Europe Asia Other Regions Total Reconciling Items Consolidated Sales revenue: External customers ¥ 2,394,584 ¥ 8,526,733 ¥ 652,335 ¥ 3,557,338 ¥ 757,627 ¥ 15,888,617 ¥ — ¥ 15,888,617 Inter-geographic areas 2,453,729 497,231 275,089 714,901 6,826 3,947,776 (3,947,776 ) — Total 4,848,313 9,023,964 927,424 4,272,239 764,453 19,836,393 (3,947,776 ) 15,888,617 Operating profit (loss) ¥ 10 ¥ 299,750 ¥ (6,620 ) ¥ 404,220 ¥ 22,616 ¥ 719,976 ¥ 6,394 ¥ 726,370 Assets ¥ 4,546,640 ¥ 11,418,194 ¥ 694,606 ¥ 3,024,357 ¥ 621,259 ¥ 20,305,056 ¥ 114,066 ¥ 20,419,122 Non-current ¥ 2,695,603 ¥ 4,740,675 ¥ 65,500 ¥ 691,211 ¥ 144,716 ¥ 8,337,705 ¥ — ¥ 8,337,705 As of and for the year ended March 31, 2020 Yen (millions) Japan North Europe Asia Other Total Reconciling Consolidated Sales revenue: External customers ¥ 2,307,523 ¥ 8,167,345 ¥ 561,856 ¥ 3,207,470 ¥ 686,815 ¥ 14,931,009 ¥ — ¥ 14,931,009 Inter-geographic areas 2,115,411 389,474 210,713 652,231 6,825 3,374,654 (3,374,654 ) — Total 4,422,934 8,556,819 772,569 3,859,701 693,640 18,305,663 (3,374,654 ) 14,931,009 Operating profit (loss) ¥ (28,162 ) ¥ 305,315 ¥ 14,996 ¥ 319,565 ¥ 37,289 ¥ 649,003 ¥ (15,366 ) ¥ 633,637 Assets ¥ 4,889,920 ¥ 11,375,801 ¥ 689,158 ¥ 2,851,027 ¥ 518,445 ¥ 20,324,351 ¥ 137,114 ¥ 20,461,465 Non-current ¥ 3,003,416 ¥ 4,755,072 ¥ 58,735 ¥ 658,397 ¥ 109,046 ¥ 8,584,666 ¥ — ¥ 8,584,666 Explanatory notes: 1. Major countries in each geographic area: North America United States, Canada, Mexico Europe United Kingdom, Germany, Belgium, Italy, France Asia Thailand, Indonesia, China, India, Vietnam Other Regions Brazil, Australia 2. Operating profit (loss) of each geographical region is measured in a consistent manner with consolidated operating profit, which is profit before income taxes before share of profit of investments accounted for using the equity method and finance income and finance costs. 3. Assets of each geographical region are defined as total assets including investments accounted for using the equity method, derivatives, and deferred tax assets. 4. Sales revenues between geographic areas are generally made at values that approximate arm’s-length 5. Reconciling items include elimination of inter-geographic transactions and balances as well as unallocated corporate assets. Unallocated corporate assets, included in reconciling items as of March 31, 2018, 2019 and 2020 amounted to ¥519,780 million, ¥682,842 million and ¥787,022 million, respectively, which consist primarily of the Company’s cash and cash equivalents and financial assets measured at fair value through other comprehensive income.

Cash and Cash Equivalents (Tabl

Cash and Cash Equivalents (Tables)	12 Months Ended
	Mar. 31, 2020
Text block [abstract]
Summary of Cash and Cash Equivalents	Cash and cash equivalents as of March 31, 2019 and 2020 consist of the following: Yen (millions) 2019 2020 Cash and deposits ¥ 1,815,920 ¥ 2,017,247 Cash equivalents 678,201 655,106 Total ¥ 2,494,121 ¥ 2,672,353

Trade Receivables (Tables)

Trade Receivables (Tables) - Trade receivables [member]	12 Months Ended
	Mar. 31, 2020
Statement [LineItems]
Summary of Financial Assets	Trade receivables as of March 31, 2019 and 2020 consist of the following: Yen (millions) 2019 2020 Trade accounts and notes receivable ¥ 712,180 ¥ 526,403 Other 93,620 118,808 Allowance for impairment losses (12,555 ) (11,302 ) Total ¥ 793,245 ¥ 633,909
Changes in Allowance for Doubtful Accounts	The changes in the allowance for impairment losses on trade receivables for the years ended March 31, 2018, 2019 and 2020 are as follows: Yen (millions) 2018 2019 2020 Balance at beginning of year ¥ 14,510 ¥ 14,389 ¥ 12,555 Remeasurement ¥ 858 ¥ 251 ¥ 589 Write-offs (706 ) (1,590 ) (971 ) Exchange differences on translating foreign operations (273 ) (495 ) (871 ) Balance at end of year ¥ 14,389 ¥ 12,555 ¥ 11,302

Receivables from Financial Se_2

Receivables from Financial Services (Tables)	12 Months Ended
	Mar. 31, 2020
Statement [LineItems]
Summary of Receivables from Financial Services	Receivables from financial services as of March 31, 2019 and 2020 consist of the following: Yen (millions) 2019 2020 Consumer finance receivables: Retail ¥ 4,602,848 ¥ 4,440,364 Finance lease 142,855 125,958 Dealer finance receivables: Wholesale 712,214 666,992 Subtotal ¥ 5,457,917 ¥ 5,233,314 Allowance for credit losses ¥ (43,203 ) ¥ (63,468 ) Allowance for losses on lease residual values (29 ) — Unearned interest income and fees (9,435 ) (8,681 ) Total ¥ 5,405,250 ¥ 5,161,165 Current assets ¥ 1,951,633 ¥ 1,878,358 Non-current 3,453,617 3,282,807 Total ¥ 5,405,250 ¥ 5,161,165
Gross Investment in Lease and Present Value of Minimum Lease Payments Receivable	The gross investment in the lease and the present value of minimum lease payments receivable as of March 31, 2019 is as follows: Yen (millions) As of March 31, 2019 Gross Unearned interest Unguaranteed Present value of Within 1 year ¥ 52,099 ¥ (1,632 ) ¥ (25,369 ) ¥ 25,098 Between 1 and 5 years 90,658 (7,790 ) (46,662 ) 36,206 Later than 5 years 98 (13 ) — 85 Total ¥ 142,855 ¥ (9,435 ) ¥ (72,031 ) ¥ 61,389 The lease payments receivable under the finance leases by maturity as of March 31, 2020 is as follows: Yen (millions) 2020 Within 1 year ¥ 22,808 Between 1 and 2 years 20,578 Between 2 and 3 years 13,370 Between 3 and 4 years 6,097 Between 4 and 5 years 1,359 Later than 5 years 77 Undiscounted lease payments receivable ¥ 64,289 Unearned finance income ¥ (4,091 ) Unguaranteed residual value ¥ 57,079 Net investment in the lease ¥ 117,277
Receivables from financial services [Member]
Statement [LineItems]
Changes in Allowance for Doubtful Accounts	The changes in the allowance for credit losses on receivables from financial services for the years ended March 31, 2018, 2019 and 2020 are as follows: For the year ended March 31, 2018 Yen (millions) Retail Finance lease Wholesale Total Balance as of April 1, 2017 ¥ 28,867 ¥ 809 ¥ 1,823 ¥ 31,499 Provision ¥ 36,037 ¥ 214 ¥ 336 ¥ 36,587 Write-offs (39,478 ) (299 ) (271 ) (40,048 ) Recoveries 8,368 50 13 8,431 Exchange differences on translating foreign operations (1,718 ) 47 5 (1,666 ) Balance as of March 31, 2018 ¥ 32,076 ¥ 821 ¥ 1,906 ¥ 34,803 For the years ended March 31, 2019 and 2020 Yen (millions) 12-month ECL Lifetime ECL Total Not credit-impaired Credit-impaired Retail: Balance as of April 1, 2018 under IFRS 9 (2013) ¥ 32,076 Effect of adopting IFRS 9 (2014) ¥ 4,599 Balance as of April 1, 2018 under IFRS 9 (2014) ¥ 20,574 ¥ 9,543 ¥ 6,558 ¥ 36,675 Remeasurement ¥ 1,788 ¥ 579 ¥ 31,506 ¥ 33,873 Write-offs — — (30,986 ) (30,986 ) Exchange differences on translating foreign operations 250 285 (337 ) 198 Balance as of March 31, 2019 ¥ 22,612 ¥ 10,407 ¥ 6,741 ¥ 39,760 Remeasurement ¥ 5,547 ¥ 16,637 ¥ 32,649 ¥ 54,833 Write-offs — — (31,436 ) (31,436 ) Exchange differences on translating foreign operations (1,504 ) (412 ) (1,000 ) (2,916 ) Balance as of March 31, 2020 ¥ 26,655 ¥ 26,632 ¥ 6,954 ¥ 60,241 Finance lease: Balance as of April 1, 2018 under IFRS 9 (2013) ¥ 821 Effect of adopting IFRS 9 (2014) ¥ — Balance as of April 1, 2018 under IFRS 9 (2014) ¥ 604 ¥ 78 ¥ 139 ¥ 821 Remeasurement ¥ (19 ) ¥ (3 ) ¥ 114 ¥ 92 Write-offs — — (125 ) (125 ) Exchange differences on translating foreign operations (51 ) (3 ) (4 ) (58 ) Balance as of March 31, 2019 ¥ 534 ¥ 72 ¥ 124 ¥ 730 Remeasurement ¥ (15 ) ¥ 29 ¥ 128 ¥ 142 Write-offs — — (130 ) (130 ) Exchange differences on translating foreign operations (38 ) (5 ) (9 ) (52 ) Balance as of March 31, 2020 ¥ 481 ¥ 96 ¥ 113 ¥ 690 Yen (millions) 12-month ECL Lifetime ECL Total Not credit-impaired Credit-impaired Wholesale: Balance as of April 1, 2018 under IFRS 9 (2013) ¥ 1,906 Effect of adopting IFRS 9 (2014) ¥ — Balance as of April 1, 2018 under IFRS 9 (2014) ¥ 1,553 ¥ 309 ¥ 44 ¥ 1,906 Remeasurement ¥ (49 ) ¥ 35 ¥ 769 ¥ 755 Write-offs — — 153 153 Exchange differences on translating foreign operations (85 ) (15 ) (1 ) (101 ) Balance as of March 31, 2019 ¥ 1,419 ¥ 329 ¥ 965 ¥ 2,713 Remeasurement ¥ 127 ¥ 2 ¥ 1,776 ¥ 1,905 Write-offs — — (1,784 ) (1,784 ) Exchange differences on translating foreign operations (109 ) (13 ) (175 ) (297 ) Balance as of March 31, 2020 ¥ 1,437 ¥ 318 ¥ 782 ¥ 2,537 Total: Balance as of April 1, 2018 under IFRS 9 (2013) ¥ 34,803 Effect of adopting IFRS 9 (2014) ¥ 4,599 Balance as of April 1, 2018 under IFRS 9 (2014) ¥ 22,731 ¥ 9,930 ¥ 6,741 ¥ 39,402 Remeasurement ¥ 1,720 ¥ 611 ¥ 32,389 ¥ 34,720 Write-offs — — (30,958 ) (30,958 ) Exchange differences on translating foreign operations 114 267 (342 ) 39 Balance as of March 31, 2019 ¥ 24,565 ¥ 10,808 ¥ 7,830 ¥ 43,203 Remeasurement ¥ 5,659 ¥ 16,668 ¥ 34,553 ¥ 56,880 Write-offs — — (33,350 ) (33,350 ) Exchange differences on translating foreign operations (1,651 ) (430 ) (1,184 ) (3,265 ) Balance as of March 31, 2020 ¥ 28,573 ¥ 27,046 ¥ 7,849 ¥ 63,468

Other Financial Assets (Tables)

Other Financial Assets (Tables)	12 Months Ended
	Mar. 31, 2020
Statement [LineItems]
Summary of Other Financial Assets	Other financial assets as of March 31, 2019 and 2020 consist of the following: Yen (millions) 2019 2020 Financial assets measured at amortized cost: Receivables other than trade receivables and receivables from ¥ 118,256 ¥ 144,554 Debt securities 54,964 62,204 Guaranty deposits 13,098 12,266 Restricted cash 66,555 64,152 Other 9,776 10,743 Allowance for impairment losses (4,233 ) (3,364 ) Financial assets measured at fair value through other comprehensive income: Debt securities 10,495 9,069 Equity securities 207,035 178,001 Financial assets measured at fair value through profit or loss: Derivatives 46,397 95,804 Debt securities 58,080 58,348 Total ¥ 580,423 ¥ 631,777 Current assets ¥ 163,274 ¥ 190,053 Non-current 417,149 441,724 Total ¥ 580,423 ¥ 631,777
Major Securities Included in Equity Securities Designated as Financial Assets Measured at Fair Value Through Other Comprehensive Income	Major securities included in the equity securities designated as financial assets measured at fair value through other comprehensive income as of March 31, 2019 and 2020 are as follows: As of March 31, 2019 Yen (millions) Fair value GM Cruise Holdings LLC ¥ 83,242 Stanley Electric Co., Ltd. 27,475 Mitsubishi UFJ Financial Group, Inc. 7,976 NIPPON SEIKI CO., LTD. 6,714 NIKKON Holdings Co., Ltd. 6,414 Tokio Marine Holdings, Inc. 5,859 As of March 31, 2020 Yen (millions) Fair value GM Cruise Holdings LLC ¥ 85,649 Stanley Electric Co., Ltd. 19,690 Mitsubishi UFJ Financial Group, Inc. 5,844 Tokio Marine Holdings, Inc. 5,409 NIKKON Holdings Co., Ltd. 5,184 Daido Steel Co., Ltd. 4,542
Summary of Fair Values at Date of Derecognition and Cumulative Net Gains or Losses Recognized in Other Comprehensive Income in Equity	The fair values at the date of derecognition and cumulative net gains or losses recognized in other comprehensive income in equity for the years ended March 31, 2018, 2019 and 2020 are as follows: Yen (millions) 2018 2019 2020 Fair value ¥ 431 ¥ 61,038 ¥ 33 Cumulative net gain or loss ¥ 302 ¥ 39,382 ¥ (23 )
Other financial assets [member]
Statement [LineItems]
Summary of Changes in Allowance for Impairment Losses	The changes in the allowance for impairment losses on other financial assets for the years ended March 31, 2018, 2019 and 2020 are as follows: Yen (millions) 2018 2019 2020 Balance at beginning of year ¥ 10,964 ¥ 10,145 ¥ 4,233 Remeasurement ¥ 343 ¥ 284 ¥ 600 Write-offs (1,179 ) (6,194 ) (1,463 ) Exchange differences on translating foreign operations 17 (2 ) (6 ) Balance at end of year ¥ 10,145 ¥ 4,233 ¥ 3,364

Inventories (Tables)

Inventories (Tables)	12 Months Ended
	Mar. 31, 2020
Text block [abstract]
Summary of Inventories	Inventories as of March 31, 2019 and 2020 consist of the following: Yen (millions) 2019 2020 Finished goods ¥ 973,797 ¥ 909,076 Work in process 78,006 76,264 Raw materials 534,984 575,228 Total ¥ 1,586,787 ¥ 1,560,568

Investments Accounted for Usi_2

Investments Accounted for Using the Equity Method (Tables)	12 Months Ended
	Mar. 31, 2020
Text block [abstract]
Equity in Affiliates and Joint Ventures	Honda’s equity in affiliates and joint ventures as of March 31, 2019 and 2020 is as follows: Yen (millions) 2019 2020 Investments accounted for using the equity method: Affiliates ¥ 382,706 ¥ 378,012 Joint ventures 330,333 277,463 Total ¥ 713,039 ¥ 655,475 Honda’s equity of undistributed earnings: Affiliates ¥ 294,532 ¥ 293,489 Joint ventures 249,284 222,061 Total ¥ 543,816 ¥ 515,550
Share of Comprehensive Income of Affiliates and Joint Ventures	Honda’s share of comprehensive income of affiliates and joint ventures for the years ended March 31, 2018, 2019 and 2020 is as follows: Yen (millions) 2018 2019 2020 Profit for the year: Affiliates ¥ 45,501 ¥ 43,137 ¥ (434 ) Joint ventures 202,142 185,690 164,637 Total ¥ 247,643 ¥ 228,827 ¥ 164,203 Other comprehensive income: Affiliates ¥ 4,983 ¥ (13,150 ) ¥ (5,758 ) Joint ventures 7,325 (8,534 ) (26,185 ) Total ¥ 12,308 ¥ (21,684 ) ¥ (31,943 ) Comprehensive income for the year: Affiliates ¥ 50,484 ¥ 29,987 ¥ (6,192 ) Joint ventures 209,467 177,156 138,452 Total ¥ 259,951 ¥ 207,143 ¥ 132,260
Summarized Financial Information	Summarized financial information of Dongfeng Honda Automobile Co., Ltd. as of March 31, 2019 and 2020 is as follows: Yen (millions) 2019 2020 Current assets ¥ 513,364 ¥ 347,462 Non-current 195,806 196,439 Total assets 709,170 543,901 Current liabilities 369,119 316,519 Non-current 42,264 28,229 Total liabilities 411,383 344,748 Total equity ¥ 297,787 ¥ 199,153 Honda’s share of total equity (50%) 148,893 99,577 Equity method adjustments (1,310 ) (1,204 ) Carrying amount of its interest in the joint venture ¥ 147,583 ¥ 98,373 Cash and cash equivalents included in current assets ¥ 201,698 ¥ 246,736 Financial liabilities (excluding trade payables and provisions) included in current liabilities 4,628 67,414 Summarized financial information of Dongfeng Honda Automobile Co., Ltd. for the years ended March 31, 2018, 2019 and 2020 is as follows: Yen (millions) 2018 2019 2020 Sales revenue ¥ 1,695,603 ¥ 1,696,651 ¥ 1,516,160 Interest income 8,998 6,190 8,019 Depreciation and amortization 16,001 16,091 18,870 Income tax expense 60,295 58,504 48,622 Profit for the year 185,604 176,787 130,327 Other comprehensive income 11,586 (8,354 ) (21,100 ) Comprehensive income for the year ¥ 197,190 ¥ 168,433 ¥ 109,227 Comprehensive income for the year (50%) 98,595 84,217 54,614 Equity method adjustments 842 56 53 Honda’s share of comprehensive income for the year ¥ 99,437 ¥ 84,273 ¥ 54,667 Dividend from the joint venture to Honda ¥ 75,407 ¥ 70,788 ¥ 72,760
Combined Financial Information of Affiliates and Joint Ventures	Combined financial information in respect of affiliates as of March 31, 2019 and 2020, and for the years ended March 31, 2018, 2019 and 2020 is as follows: Yen (millions) For the year ended March 31, 2018 Motorcycle Automobile Life Creation Total Sales revenue ¥ 168,229 ¥ 2,589,380 ¥ 6,777 ¥ 2,764,386 Profit for the year 11,115 99,119 1,001 111,235 Yen (millions) As of and for the year ended March 31, 2019 Motorcycle Automobile Life Creation Total Current assets ¥ 53,449 ¥ 1,143,390 ¥ 8,897 ¥ 1,205,736 Non-current 31,464 1,069,087 22,821 1,123,372 Total assets 84,913 2,212,477 31,718 2,329,108 Current liabilities 24,307 594,494 2,751 621,552 Non-current 4,414 216,199 1,168 221,781 Total liabilities 28,721 810,693 3,919 843,333 Total equity ¥ 56,192 ¥ 1,401,784 ¥ 27,799 ¥ 1,485,775 Sales revenue ¥ 170,750 ¥ 2,657,023 ¥ 7,004 ¥ 2,834,777 Profit for the year 8,654 143,833 766 153,253 Yen (millions) As of and for the year ended March 31, 2020 Motorcycle Automobile Life Creation Total Current assets ¥ 49,706 ¥ 1,146,286 ¥ 10,010 ¥ 1,206,002 Non-current 28,071 1,083,789 21,565 1,133,425 Total assets 77,777 2,230,075 31,575 2,339,427 Current liabilities 21,337 587,533 2,681 611,551 Non-current 3,844 224,505 1,136 229,485 Total liabilities 25,181 812,038 3,817 841,036 Total equity ¥ 52,596 ¥ 1,418,037 ¥ 27,758 ¥ 1,498,391 Sales revenue ¥ 160,557 ¥ 2,505,819 ¥ 7,342 ¥ 2,673,718 Profit for the year 8,094 69,339 914 78,347 Combined financial information in respect of joint ventures as of March 31, 2019 and 2020, and for the years ended March 31, 2018, 2019 and 2020 is as follows: Yen (millions) For the year ended March 31, 2018 Motorcycle Automobile Life Creation Total Sales revenue ¥ 701,676 ¥ 3,835,476 ¥ 5,151 ¥ 4,542,303 Profit for the year 56,733 347,661 337 404,731 Yen (millions) As of and for the year ended March 31, 2019 Motorcycle Automobile Life Creation Total Current assets ¥ 210,818 ¥ 1,179,520 ¥ 3,112 ¥ 1,393,450 Non-current 119,749 377,019 683 497,451 Total assets 330,567 1,556,539 3,795 1,890,901 Current liabilities 192,951 929,071 1,039 1,123,061 Non-current 10,842 81,316 873 93,031 Total liabilities 203,793 1,010,387 1,912 1,216,092 Total equity ¥ 126,774 ¥ 546,152 ¥ 1,883 ¥ 674,809 Sales revenue ¥ 746,385 ¥ 3,819,913 ¥ 5,907 ¥ 4,572,205 Profit for the year 54,230 316,491 433 371,154 Yen (millions) As of and for the year ended March 31, 2020 Motorcycle Automobile Life Creation Total Current assets ¥ 201,170 ¥ 867,758 ¥ 3,592 ¥ 1,072,520 Non-current 114,106 373,274 661 488,041 Total assets 315,276 1,241,032 4,253 1,560,561 Current liabilities 181,772 766,635 1,190 949,597 Non-current 11,483 49,058 648 61,189 Total liabilities 193,255 815,693 1,838 1,010,786 Total equity ¥ 122,021 ¥ 425,339 ¥ 2,415 ¥ 549,775 Sales revenue ¥ 791,250 ¥ 3,483,024 ¥ 6,413 ¥ 4,280,687 Profit for the year 63,819 264,216 568 328,603

Property, Plant and Equipment (

Property, Plant and Equipment (Tables)	12 Months Ended
	Mar. 31, 2020
Statement [LineItems]
Future Minimum Lease Payments Expected to be Received under Non-cancellable Operating Leases to be Received	Future minimum lease payments expected to be received under non-cancelable Yen (millions) 2019 Within 1 year ¥ 736,650 Between 1 and 5 years 897,789 Later than 5 years — Total ¥ 1,634,439 Future minimum lease payments expected to be received as shown above should not necessarily be considered indicative of future cash collections. (Future lease payments) Future lease payments expected to be received under the operating leases by maturity as of March 31, 2020 consist of the following: Yen (millions) 2020 Within 1 year ¥ 784,148 Between 1 and 2 years 577,856 Between 2 and 3 years 274,122 Between 3 and 4 years 91,320 Between 4 and 5 years 27,421 Later than 5 years — Total ¥ 1,754,867
Equipment on operating leases [member]
Statement [LineItems]
Summary of Property, Plant and Equipment	The changes in cost, accumulated depreciation and impairment losses, and the carrying amounts of equipment on operating leases for the years ended March 31, 2019 and 2020 are as follows: (Cost) Yen (millions) Balance as of April 1, 2018 ¥ 5,218,446 Additions ¥ 2,038,734 Sales or disposal (1,721,471 ) Exchange differences on translating foreign operations 164,802 Other — Balance as of March 31, 2019 ¥ 5,700,511 Additions ¥ 2,244,893 Sales or disposal (1,914,083 ) Exchange differences on translating foreign operations (127,747 ) Other — Balance as of March 31, 2020 ¥ 5,903,574 (Accumulated depreciation and impairment losses) Yen (millions) Balance as of April 1, 2018 ¥ (1,130,313 ) Depreciation ¥ (781,082 ) Sales or disposal 704,691 Exchange differences on translating foreign operations (32,242 ) Other (12,716 ) Balance as of March 31, 2019 ¥ (1,251,662 ) Depreciation ¥ (819,705 ) Sales or disposal 801,133 Exchange differences on translating foreign operations 28,760 Other (36,037 ) Balance as of March 31, 2020 ¥ (1,277,511 ) (Carrying amount) Yen (millions) Balance as of March 31, 2019 ¥ 4,448,849 Balance as of March 31, 2020 4,626,063
Property, plant and equipment [member]
Statement [LineItems]
Summary of Property, Plant and Equipment	The changes in cost, accumulated depreciation and impairment losses, and the carrying amounts of property, plant and equipment for the years ended March 31, 2019 and 2020 are as follows: (Cost) Yen (millions) Land Buildings and Machinery and Construction in Total Balance as of April 1, 2018 ¥ 545,192 ¥ 2,248,793 ¥ 5,380,505 ¥ 192,559 ¥ 8,367,049 Additions ¥ 304 ¥ 10,399 ¥ 174,686 ¥ 281,268 ¥ 466,657 Reclassification 2,421 64,101 194,365 (260,887 ) — Sales or disposal (1,469 ) (11,432 ) (294,761 ) — (307,662 ) Exchange differences on translating foreign operations 307 15,931 63,898 2,647 82,783 Other 128 (269 ) (3,710 ) (1,618 ) (5,469 ) Balance as of March 31, 2019 ¥ 546,883 ¥ 2,327,523 ¥ 5,514,983 ¥ 213,969 ¥ 8,603,358 Effect of adopting IFRS 16 76,774 139,914 41,666 — 258,354 Balance as of April 1, 2019 under IFRS 16 623,657 2,467,437 5,556,649 213,969 8,861,712 Additions 7,519 28,933 125,151 293,566 455,169 Reclassification 87 59,861 215,358 (275,306 ) — Sales or disposal (6,896 ) (19,531 ) (231,388 ) — (257,815 ) Exchange differences on translating foreign operations (7,860 ) (59,431 ) (192,632 ) (9,717 ) (269,640 ) Other (820 ) (9,075 ) (31,325 ) (239 ) (41,459 ) Balance as of March 31, 2020 ¥ 615,687 ¥ 2,468,194 ¥ 5,441,813 ¥ 222,273 ¥ 8,747,967 (Accumulated depreciation and impairment losses) Yen (millions) Land Buildings and Machinery and Construction in Total Balance as of April 1, 2018 ¥ (4,179 ) ¥ (1,270,762 ) ¥ (4,027,490 ) ¥ (2,185 ) ¥ (5,304,616 ) Depreciation ¥ — ¥ (74,391 ) ¥ (424,645 ) ¥ — ¥ (499,036 ) Impairment losses (1,052 ) (6,077 ) (17,944 ) (1,975 ) (27,048 ) Sales or disposal 22 9,665 254,802 — 264,489 Exchange differences on translating foreign operations 9 (9,266 ) (51,094 ) 23 (60,328 ) Other 636 449 3,936 — 5,021 Balance as of March 31, 2019 ¥ (4,564 ) ¥ (1,350,382 ) ¥ (4,262,435 ) ¥ (4,137 ) ¥ (5,621,518 ) Effect of adopting IFRS 16 — — — — — Balance as of April 1, 2019 under IFRS 16 ¥ (4,564 ) ¥ (1,350,382 ) ¥ (4,262,435 ) ¥ (4,137 ) ¥ (5,621,518 ) Depreciation (6,218 ) (88,565 ) (375,537 ) — (470,320 ) Sales or disposal 860 12,673 198,448 — 211,981 Exchange differences on translating foreign operations 156 28,116 144,226 153 172,651 Other (751 ) 3,176 6,369 2,149 10,943 Balance as of March 31, 2020 ¥ (10,517 ) ¥ (1,394,982 ) ¥ (4,288,929 ) ¥ (1,835 ) ¥ (5,696,263 ) (Carrying amount) Yen (millions) Land Buildings and Machinery and Construction in Total Balance as of March 31, 2019 ¥ 542,319 ¥ 977,141 ¥ 1,252,548 ¥ 209,832 ¥ 2,981,840 Balance as of March 31, 2020 605,170 1,073,212 1,152,884 220,438 3,051,704
Summary of carrying amounts of the right-of-use assets	The changes in the carrying amounts of the right-of-use Yen (millions) Land Buildings and Machinery and Total Balance as of April 1, 2019 ¥ 81,363 ¥ 142,598 ¥ 95,707 ¥ 319,668 Additions 6,263 19,988 53,276 79,527 Depreciation (6,218 ) (14,755 ) (52,437 ) (73,410 ) Other (3,492 ) (5,310 ) (10,941 ) (19,743 ) Balance as of March 31, 2020 ¥ 77,916 ¥ 142,521 ¥ 85,605 ¥ 306,042

Intangible Assets (Tables)

Intangible Assets (Tables)	12 Months Ended
	Mar. 31, 2020
Text block [abstract]
Changes in Cost, Accumulated Amortization and Impairment Losses, and Carrying Amounts of Intangible Assets	The changes in cost, accumulated amortization and impairment losses, and carrying amounts of intangible assets for the years ended March 31, 2019 and 2020 are as follows: (Cost) Yen (millions) Capitalized Software Other Total Balance as of April 1, 2018 ¥ 972,964 ¥ 355,163 ¥ 33,469 ¥ 1,361,596 Additions ¥ — ¥ 11,836 ¥ 3,956 ¥ 15,792 Internally developed 161,232 14,975 — 176,207 Sales or disposal (104,237 ) (5,082 ) (265 ) (109,584 ) Exchange differences on translating foreign 183 2,701 (1,067 ) 1,817 Other — (29 ) 2,195 2,166 Balance as of March 31, 2019 ¥ 1,030,142 ¥ 379,564 ¥ 38,288 ¥ 1,447,994 Additions ¥ — ¥ 14,971 ¥ 14,065 ¥ 29,036 Internally developed 192,397 16,370 — 208,767 Sales or disposal (136,575 ) (9,473 ) (826 ) (146,874 ) Exchange differences on translating foreign (2,439 ) (9,684 ) (2,329 ) (14,452 ) Other — 984 (3,008 ) (2,024 ) Balance as of March 31, 2020 ¥ 1,083,525 ¥ 392,732 ¥ 46,190 ¥ 1,522,447 (Accumulated amortization and impairment losses) Yen (millions) Capitalized Software Other Total Balance as of April 1, 2018 ¥ (374,443 ) ¥ (236,688 ) ¥ (8,951 ) ¥ (620,082 ) Amortization ¥ (148,100 ) ¥ (39,224 ) ¥ (1,243 ) ¥ (188,567 ) Sales or disposal 104,237 2,842 59 107,138 Exchange differences on translating foreign (9 ) (2,040 ) 222 (1,827 ) Other — 612 (900 ) (288 ) Balance as of March 31, 2019 ¥ (418,315 ) ¥ (274,498 ) ¥ (10,813 ) ¥ (703,626 ) Amortization ¥ (136,508 ) ¥ (33,199 ) ¥ (1,671 ) ¥ (171,378 ) Sales or disposal 136,575 7,870 159 144,604 Exchange differences on translating foreign 449 6,787 918 8,154 Other* (38,534 ) (316 ) (917 ) (39,767 ) Balance as of March 31, 2020 ¥ (456,333 ) ¥ (293,356 ) ¥ (12,324 ) ¥ (762,013 ) Explanatory note: * For certain capitalized development costs in progress related to Automobile business segment, the Company recognized the carrying amount in excess of recoverable amount as an expense in the consolidated statement of income for the year ended March 31, 2020. (Carrying amount) Yen (millions) Capitalized Software Other Total Balance as of March 31, 2019 ¥ 611,827 ¥ 105,066 ¥ 27,475 ¥ 744,368 Balance as of March 31, 2020 627,192 99,376 33,866 760,434

Trade Payables (Tables)

Trade Payables (Tables)	12 Months Ended
	Mar. 31, 2020
Text block [abstract]
Summary of Trade Payables	Trade payables as of March 31, 2019 and 2020 consist of the following: Yen (millions) 2019 2020 Trade accounts and notes payable ¥ 1,056,065 ¥ 844,183 Other 128,817 114,286 Total ¥ 1,184,882 ¥ 958,469

Financing Liabilities (Tables)

Financing Liabilities (Tables)	12 Months Ended
	Mar. 31, 2020
Statement [LineItems]
Pledged Assets for Financing Liabilities	Pledged assets for financing liabilities as of March 31, 2019 and 2020 are as follows: Yen (millions) 2019 2020 Trade receivables ¥ 26,286 ¥ 22,093 Receivables from financial services 1,134,489 1,140,583 Inventories 26,677 17,956 Equipment on operating leases — 81,501 Property, plant and equipment 55,139 1,478 Total ¥ 1,242,591 ¥ 1,263,611
The Changes in Liabilities Arising from Financing Activities	The changes in liabilities arising from financing activities for the years ended March 31, 2018, 2019 and 2020 are as follows: For the year ended March 31, 2018 Yen (millions) Balance Cash flows Cash flows Non-cash Balance Acquisitions Changes Changes Other Short-term financing liabilities ¥ 1,162,111 ¥ 101,885 ¥ — ¥ — ¥ (28,854 ) ¥ — ¥ 1,505 ¥ 1,236,647 Long-term financing liabilities 5,647,007 80,042 — — (169,403 ) — 4,717 5,562,363 Lease liabilities 69,364 (47,449 ) — 50,610 (468 ) — 566 72,623 Derivative financial liabilities (assets) *2 25,300 — (3,308 ) — (1,732 ) (36,466 ) — (16,206 ) Total ¥ 6,903,782 ¥ 134,478 ¥ (3,308 ) ¥ 50,610 ¥ (200,457 ) ¥ (36,466 ) ¥ 6,788 ¥ 6,855,427 For the year ended March 31, 2019 Yen (millions) Balance Cash flows Cash flows Non-cash Balance Acquisitions Changes Changes Other Short-term financing liabilities ¥ 1,236,647 ¥ 221,551 ¥ — ¥ — ¥ 14,568 ¥ — ¥ 858 ¥ 1,473,624 Long-term financing liabilities 5,562,363 174,160 — — 118,789 — 2,184 5,857,496 Lease liabilities 72,623 (47,106 ) — 37,028 (237 ) — — 62,308 Derivative financial liabilities (assets) *2 (16,206 ) 3,342 (9,187 ) — (859 ) 47,487 — 24,577 Total ¥ 6,855,427 ¥ 351,947 ¥ (9,187 ) ¥ 37,028 ¥ 132,261 ¥ 47,487 ¥ 3,042 ¥ 7,418,005 For the year ended March 31, 2020 Yen (millions) Balance Cash flows Cash flows Non-cash Balance Acquisitions Changes Changes Other Short-term financing liabilities ¥ 1,473,624 ¥ (1,993 ) ¥ — ¥ — ¥ (42,424 ) ¥ — ¥ (4,540 ) ¥ 1,424,667 Long-term financing liabilities 5,857,496 362,131 — — (170,345 ) — (4,263 ) 6,045,019 Lease liabilities *1 334,540 (78,659 ) — 78,923 (3,987 ) — (777 ) 330,040 Derivative financial liabilities (assets) *2 24,577 (17,462 ) (10,001 ) — (434 ) 14,935 — 11,615 Total ¥ 7,690,237 ¥ 264,017 ¥ (10,001 ) ¥ 78,923 ¥ (217,190 ) ¥ 14,935 ¥ (9,580 ) ¥ 7,811,341 Explanatory notes: *1 Honda has adopted IFRS 16 with a date of initial application of April 1, 2019 and recognized additional lease liabilities of ¥272,232 million as of April 1, 2019. For more details on the amount of the additional lease liabilities, see note “(2) Basis of Preparation (d) Changes in Accounting Policies.” *2 Derivative financial liabilities (assets) are held by the finance subsidiaries of the Company to hedge foreign currency risk for principals and interests payment of long-term financing liabilities. The cash flows related to repayments of principals are included in cash flows from financing activities, while the cash flows related to interest paid are included in cash flows from operating activities.
Current borrowings [member]
Statement [LineItems]
Summary of Financing Liabilities	Financing liabilities presented in current liabilities as of March 31, 2019 and 2020 consist of the following: Yen (millions) 2019 2020 Current: Commercial paper ¥ 943,905 ¥ 976,606 Loans 366,620 355,667 Medium-term notes 122,080 32,647 Asset-backed securities 41,019 59,747 Subtotal ¥ 1,473,624 ¥ 1,424,667 Reclassification from non-current ¥ 1,715,158 ¥ 1,823,790 Total ¥ 3,188,782 ¥ 3,248,457
Interest Rates for Financing Liabilities	The weighted average interest rates for financing liabilities presented in current liabilities (excluding reclassification from non-current 2019 2020 Weighted average interest rate 1.85 % 1.21 %
Non-current liabilities [member]
Statement [LineItems]
Summary of Financing Liabilities	Financing liabilities presented in non-current Yen (millions) 2019 2020 Non-current: Loans ¥ 1,235,791 ¥ 1,204,588 Medium-term notes 3,151,868 3,169,407 Corporate bonds 444,517 599,426 Asset-backed securities 1,025,320 1,071,598 Subtotal ¥ 5,857,496 ¥ 6,045,019 Reclassification to current liabilities (Current portion) ¥ (1,715,158 ) ¥ (1,823,790 ) Total ¥ 4,142,338 ¥ 4,221,229
Interest Rates for Financing Liabilities	The interest rate range and payment due date for financing liabilities presented in non-current 2019 2020 Loans Interest rate: 0.10% - 10.50% Due: 2019 - 2046 Interest rate: 0.07% - 11.00% Due: 2020 - 2046 Medium-term notes Interest rate: 0.35% - 3.88% Due: 2019 - 2028 Interest rate: 0.35% - 3.88% Due: 2020 - 2028 Corporate bonds Interest rate: 0.01% - 0.59% Due: 2019 - 2023 Interest rate: 0.01% - 1.17% Due: 2020 - 2027 Asset-backed securities Interest rate: 0.11% - 3.30% Due: 2019 - 2024 Interest rate: 0.11% - 3.30% Due: 2020 - 2024

Other Financial Liabilities (Ta

Other Financial Liabilities (Tables)	12 Months Ended
	Mar. 31, 2020
Text block [abstract]
Summary of Other Financial Liabilities	Other financial liabilities as of March 31, 2019 and 2020 consist of the following: Yen (millions) 2019 2020 Financial liabilities measured at amortized cost ¥ 64,800 ¥ 67,427 Financial liabilities measured at fair value through profit or loss: Derivatives 69,491 115,168 Lease liabilities 62,308 330,040 Total ¥ 196,599 ¥ 512,635 Current liabilities ¥ 132,910 ¥ 209,065 Non-current 63,689 303,570 Total ¥ 196,599 ¥ 512,635

Provisions (Tables)

Provisions (Tables)	12 Months Ended
	Mar. 31, 2020
Text block [abstract]
Components of and Changes in Provisions	The components of and changes in provisions for the year ended March 31, 2020 are as follows: Yen (millions) Product Other Total Balance as of April 1, 2019 ¥ 458,482 ¥ 111,026 ¥ 569,508 Provision ¥ 212,275 ¥ 72,075 ¥ 284,350 Write-offs (250,522 ) (22,497 ) (273,019 ) Reversal (26,843 ) (9,157 ) (36,000 ) Exchange differences on translating foreign operations (12,703 ) (6,522 ) (19,225 ) Balance as of March 31, 2020 ¥ 380,689 ¥ 144,925 ¥ 525,614 Explanatory note: * Honda recognizes provisions for product warranties to cover future product warranty expenses. Honda recognizes costs for general warranties on products Honda sells and for specific warranty programs, including product recalls. Honda recognizes general estimated warranty costs at the time products are sold to customers. Honda also recognizes specific estimated warranty program costs when it is probable that an outflow of resources embodying economic benefits will be required to settle the obligation, and a reliable estimate can be made of the amount of the obligation. These provisions are estimated based on historical warranty claim experience with consideration given to the expected level of future warranty costs as well as current information on repair costs. Provision for product warranties are utilized for expenditures based on the demand from customers and dealers.
Current Liabilities and Non-current Liabilities of Provisions	Current liabilities and non-current Yen (millions) 2019 2020 Current liabilities ¥ 348,763 ¥ 287,175 Non-current 220,745 238,439 Total ¥ 569,508 ¥ 525,614

Employee Benefits (Tables)

Employee Benefits (Tables)	12 Months Ended
	Mar. 31, 2020
Text block [abstract]
Changes in Present Value of Defined Benefit Obligations and Fair Value of Plan Assets	The changes in present value of defined benefit obligations and fair value of plan assets of the Company and certain of its consolidated subsidiaries for the years ended March 31, 2019 and 2020 are as follows: Yen (millions) 2019 2020 Japanese plans Foreign plans Japanese plans Foreign plans Present value of defined benefit obligations: Balance at beginning of year ¥ 1,331,475 ¥ 1,042,753 ¥ 1,366,380 ¥ 1,086,438 Current service cost 36,300 29,133 36,331 29,063 Past service cost — 338 — (2,254 ) Interest cost 9,535 39,547 7,581 35,635 Plan participants’ contributions — 1,903 — 1,524 Remeasurements: Changes in demographic assumptions (25,360 ) (3,648 ) (6,476 ) (5,990 ) Changes in financial assumptions 34,655 36,157 157 70,892 Other 21,981 8,943 159 14,791 Benefits paid (42,206 ) (96,801 ) (47,088 ) (45,504 ) Exchange differences on translating — 28,113 — (40,684 ) Balance at end of year ¥ 1,366,380 ¥ 1,086,438 ¥ 1,357,044 ¥ 1,143,911 Fair value of plan assets: Balance at beginning of year ¥ 1,219,073 ¥ 807,528 ¥ 1,244,530 ¥ 860,858 Interest income 8,807 30,553 6,967 28,682 Actual return on plan assets, excluding interest income 34,142 10,489 (42,333 ) (10,503 ) Employer contributions 22,109 87,803 22,168 50,926 Plan participants’ contributions — 1,903 — 1,524 Benefits paid (39,601 ) (96,801 ) (43,451 ) (45,504 ) Exchange differences on translating foreign operations — 19,383 — (37,480 ) Balance at end of year ¥ 1,244,530 ¥ 860,858 ¥ 1,187,881 ¥ 848,503 Net defined benefit liabilities ¥ 121,850 ¥ 225,580 ¥ 169,163 ¥ 295,408
Fair Value of Japanese and Foreign Pension Plan Assets By Asset Category	The fair value of the Japanese and foreign pension plan assets by asset category as of March 31, 2019 and 2020 is as follows: As of March 31, 2019 Yen (millions) Japanese plans Foreign plans Market price in active market Market price in active market Quoted Unquoted Total Quoted Unquoted Total Cash and cash equivalents ¥ 9,207 ¥ — ¥ 9,207 ¥ 36,373 ¥ — ¥ 36,373 Equity securities: Japan 32,885 1 32,886 13,970 — 13,970 United States 234,226 — 234,226 94,332 — 94,332 Other 231,162 242 231,404 112,403 4,614 117,017 Debt securities: Japan 71,487 — 71,487 — 433 433 United States 3,036 143,673 146,709 — 119,942 119,942 Other 181,728 47,845 229,573 — 10,910 10,910 Group annuity insurance: General accounts — 34,663 34,663 — — — Separate accounts — 16,569 16,569 — — — Pooled funds: Real estate funds — — — — 53,100 53,100 Private equity funds — — — — 91,264 91,264 Hedge funds — 116,183 116,183 — 61,520 61,520 Commingled and other mutual funds 3,859 111,914 115,773 8,882 238,504 247,386 Other 32 5,818 5,850 (1,447 ) 16,058 14,611 Total ¥ 767,622 ¥ 476,908 ¥ 1,244,530 ¥ 264,513 ¥ 596,345 ¥ 860,858 As of March 31, 2020 Yen (millions) Japanese plans Foreign plans Market price in active market Market price in active market Quoted Unquoted Total Quoted Unquoted Total Cash and cash equivalents ¥ 7,033 ¥ — ¥ 7,033 ¥ 25,202 ¥ — ¥ 25,202 Equity securities: Japan 29,153 — 29,153 8,673 — 8,673 United States 188,020 — 188,020 60,026 — 60,026 Other 196,401 72 196,473 66,798 — 66,798 Debt securities: Japan 75,526 — 75,526 — 389 389 United States 4,495 156,356 160,851 — 123,331 123,331 Other 168,800 55,601 224,401 — 10,129 10,129 Group annuity insurance: General accounts — 36,991 36,991 — — — Separate accounts — 15,961 15,961 — — — Pooled funds: Real estate funds — 122 122 — 55,802 55,802 Private equity funds — — — — 107,319 107,319 Hedge funds — 117,841 117,841 — 49,198 49,198 Commingled and other 4,476 129,594 134,070 8,151 313,289 321,440 Other 314 1,125 1,439 524 19,672 20,196 Total ¥ 674,218 ¥ 513,663 ¥ 1,187,881 ¥ 169,374 ¥ 679,129 ¥ 848,503
Significant Actuarial Assumptions Used to Determine Present Value of Defined Benefit Obligations	The significant actuarial assumptions used to determine the present value of defined benefit obligations as of March 31, 2019 and 2020 are as follows: 2019 2020 Japanese plans Foreign plans Japanese plans Foreign plans Discount rate 0.6 % 2.5 - 3.9% 0.6 % 2.5 - 3.8% Rate of salary increase 1.6 % 2.5 - 3.0% 1.6 % 2.0 - 2.8%
Effects on Defined Benefit Obligations Due to Increase or Decrease in Discount Rate	The effects on defined benefit obligations of 0.5% increase or decrease in the discount rate as of March 31, 2019 and 2020 are as follows: Yen (millions) 2019 2020 Japanese plans Foreign plans Japanese plans Foreign plans 0.5% decrease ¥ 114,468 increase ¥ 102,878 increase ¥ 110,540 increase ¥ 103,305 increase 0.5% increase ¥ 101,281 decrease ¥ 90,659 decrease ¥ 97,949 decrease ¥ 91,314 decrease
Weighted Average Duration of Defined Benefit Obligations	The weighted average duration of defined benefit obligations as of March 31, 2019 and 2020 are as follows: 2019 2020 Japanese plans Foreign plans Japanese plans Foreign plans Weighted average duration of defined benefit obligations 16 years 17 years 15 years 16 years
Personnel Expenses Included in Consolidated Statements of Income	Personnel expenses included in the consolidated statements of income for the years ended March 31, 2018, 2019 and 2020 are as follows: Yen (millions) 2018 2019 2020 Personnel expenses ¥ 1,576,012 ¥ 1,634,785 ¥ 1,605,553

Equity (Tables)

Equity (Tables)	12 Months Ended
	Mar. 31, 2020
Text block [abstract]
Financial Liabilities and Equity	Financing liabilities and equity of Honda as of March 31, 2019 and 2020 are as follows: Yen (millions) 2019 2020 Financing liabilities ¥ 7,331,120 ¥ 7,469,686 Equity 8,565,790 8,286,023
Total Number of Shares Authorized and Issued	The Company’s total number of shares authorized and issued for the years ended March 31, 2018, 2019 and 2020 are as follows: Shares 2018 2019 2020 Total number of authorized shares Balance at end of year Common shares, no par value 7,086,000,000 7,086,000,000 7,086,000,000 Total number of issued shares Balance at beginning of year 1,811,428,430 1,811,428,430 1,811,428,430 Changes during the year — — — Balance at end of year 1,811,428,430 1,811,428,430 1,811,428,430
Total Number of Treasury Stock Held	The total number of the Company’s treasury stock held by Honda as of March 31, 2018, 2019 and 2020 is as follows: Shares 2018 2019 2020 Common shares 33,150,615 51,867,045 84,818,644
Changes in Other Components of Equity	The changes in other components of equity for the years ended March 31, 2018, 2019 and 2020 are as follows: Yen (millions) Remeasurements of Net changes in revaluation of Exchange differences Total Balance as of April 1, 2017 ¥ — ¥ 85,947 ¥ 265,459 ¥ 351,406 Adjustment during the year ¥ 12,125 ¥ 20,655 ¥ (192,572 ) ¥ (159,792 ) Reclassification to retained earnings (12,125 ) (1,197 ) — (13,322 ) Balance as of March 31, 2018 ¥ — ¥ 105,405 ¥ 72,887 ¥ 178,292 Effect of changes in accounting policy ¥ — ¥ (208 ) ¥ — ¥ (208 ) Effect of hyperinflation — — 14,896 14,896 Adjusted balance as of April 1, 2018 ¥ — ¥ 105,197 ¥ 87,783 ¥ 192,980 Adjustment during the year ¥ (23,383 ) ¥ (26,696 ) ¥ 77,372 ¥ 27,293 Reclassification to retained earnings 23,383 (29,273 ) — (5,890 ) Balance as of March 31, 2019 ¥ — ¥ 49,228 ¥ 165,155 ¥ 214,383 Adjustment during the year ¥ (102,230 ) ¥ (24,559 ) ¥ (304,670 ) ¥ (431,459 ) Reclassification to retained earnings 102,230 207 — 102,437 Balance as of March 31, 2020 ¥ — ¥ 24,876 ¥ (139,515 ) ¥ (114,639 )
Each Component of Other Comprehensive Income and Related Tax Effect Including Non-controlling Interests	Each component of other comprehensive income and related tax effect including non-controlling For the year ended March 31, 2018 Yen (millions) Before-tax Tax benefit Net-of-tax Items that will not be reclassified to profit or loss: Remeasurements of defined benefit plans: Amount incurred during the year ¥ 47,383 ¥ (34,039 ) ¥ 13,344 Net changes 47,383 (34,039 ) 13,344 Net changes in revaluation of financial assets measured at fair value through other comprehensive income: Amount incurred during the year 20,020 (732 ) 19,288 Net changes 20,020 (732 ) 19,288 Share of other comprehensive income of investments accounted for using the equity method: Amount incurred during the year 1,729 (41 ) 1,688 Net changes 1,729 (41 ) 1,688 Items that may be reclassified subsequently to profit or loss: Net changes in revaluation of financial assets measured at fair value through other comprehensive income: Amount incurred during the year — — — Reclassification to profit or loss — — — Net changes — — — Exchange differences on translating foreign operations: Amount incurred during the year (204,372 ) (4 ) (204,376 ) Reclassification to profit or loss 188 4 192 Net changes (204,184 ) — (204,184 ) Share of other comprehensive income of investments accounted for using the equity method: Amount incurred during the year 12,266 (521 ) 11,745 Reclassification to profit or loss (1,155 ) 30 (1,125 ) Net changes 11,111 (491 ) 10,620 Total other comprehensive income ¥ (123,941 ) ¥ (35,303 ) ¥ (159,244 ) For the year ended March 31, 2019 Yen (millions) Before-tax Tax benefit Net-of-tax Items that will not be reclassified to profit or loss: Remeasurements of defined benefit plans: Amount incurred during the year ¥ (25,538 ) ¥ 1,793 ¥ (23,745 ) Net changes (25,538 ) 1,793 (23,745 ) Net changes in revaluation of financial assets measured at fair value through other comprehensive income: Amount incurred during the year (34,898 ) 10,852 (24,046 ) Net changes (34,898 ) 10,852 (24,046 ) Share of other comprehensive income of investments accounted for using the equity method: Amount incurred during the year (3,029 ) 192 (2,837 ) Net changes (3,029 ) 192 (2,837 ) Items that may be reclassified subsequently to profit or loss: Net changes in revaluation of financial assets measured at fair value through other comprehensive income: Amount incurred during the year 378 (55 ) 323 Reclassification to profit or loss (88 ) (7 ) (95 ) Net changes 290 (62 ) 228 Exchange differences on translating foreign operations: Amount incurred during the year 97,122 (443 ) 96,679 Reclassification to profit or loss (1,554 ) 443 (1,111 ) Net changes 95,568 — 95,568 Share of other comprehensive income of investments accounted for using the equity method: Amount incurred during the year (19,793 ) 946 (18,847 ) Reclassification to profit or loss — — — Net changes (19,793 ) 946 (18,847 ) Total other comprehensive income ¥ 12,600 ¥ 13,721 ¥ 26,321 For the year ended March 31, 2020 Yen (millions) Before-tax Tax benefit Net-of-tax Items that will not be reclassified to profit or loss: Remeasurements of defined benefit plans: Amount incurred during the year ¥ (132,188 ) ¥ 29,205 ¥ (102,983 ) Net changes (132,188 ) 29,205 (102,983 ) Net changes in revaluation of financial assets measured at fair value through other comprehensive income: Amount incurred during the year (33,565 ) 10,204 (23,361 ) Net changes (33,565 ) 10,204 (23,361 ) Share of other comprehensive income of investments accounted for using the equity method: Amount incurred during the year (1,735 ) 185 (1,550 ) Net changes (1,735 ) 185 (1,550 ) Items that may be reclassified subsequently to profit or loss: Net changes in revaluation of financial assets measured at fair value through other comprehensive income: Amount incurred during the year 356 (47 ) 309 Reclassification to profit or loss (31 ) 1 (30 ) Net changes 325 (46 ) 279 Exchange differences on translating foreign operations: Amount incurred during the year (292,590 ) (176 ) (292,766 ) Reclassification to profit or loss (611 ) 176 (435 ) Net changes (293,201 ) — (293,201 ) Share of other comprehensive income of investments accounted for using the equity method: Amount incurred during the year (31,054 ) 661 (30,393 ) Reclassification to profit or loss — — — Net changes (31,054 ) 661 (30,393 ) Total other comprehensive income ¥ (491,418 ) ¥ 40,209 ¥ (451,209 )
Components of Other Comprehensive Income Included in Non-controlling Interests	The components of other comprehensive income included in non-controlling Yen (millions) 2018 2019 2020 Items that will not be reclassified to profit or loss: Remeasurements of defined benefit plans ¥ 1,534 ¥ (338) ¥ (753) Net changes in revaluation of financial assets measured at fair value through other comprehensive income 6 17 (73 ) Items that may be reclassified subsequently to profit or loss: Exchange differences on translating foreign operations (992 ) (651 ) (18,924 ) Total ¥ 548 ¥ (972 ) ¥ (19,750 )
Dividends from Retained Earnings	The amounts recognized as dividends of retained earnings for the years ended March 31, 2018, 2019 and 2020 are as follows: 1) Dividend payout For the year ended March 31, 2018 Resolution The Ordinary General Meeting of Shareholders on June 15, 2017 Type of shares Common shares Total amount of dividends (millions of yen) 43,254 Dividend per share (yen) 24.00 Record date March 31, 2017 Effective date June 16, 2017 Resolution The Board of Directors Meeting on August 1, 2017 Type of shares Common shares Total amount of dividends (millions of yen) 43,254 Dividend per share (yen) 24.00 Record date June 30, 2017 Effective date August 25, 2017 Resolution The Board of Directors Meeting on November 1, 2017 Type of shares Common shares Total amount of dividends (millions of yen) 43,254 Dividend per share (yen) 24.00 Record date September 30, 2017 Effective date November 29, 2017 Resolution The Board of Directors Meeting on February 2, 2018 Type of shares Common shares Total amount of dividends (millions of yen) 44,456 Dividend per share (yen) 25.00 Record date December 31, 2017 Effective date February 28, 2018 For the year ended March 31, 2019 Resolution The Board of Directors Meeting on April 27, 2018 Type of shares Common shares Total amount of dividends (millions of yen) 48,013 Dividend per share (yen) 27.00 Record date March 31, 2018 Effective date May 30, 2018 Resolution The Board of Directors Meeting on July 31, 2018 Type of shares Common shares Total amount of dividends (millions of yen) 47,682 Dividend per share (yen) 27.00 Record date June 30, 2018 Effective date August 28, 2018 Resolution The Board of Directors Meeting on October 30, 2018 Type of shares Common shares Total amount of dividends (millions of yen) 49,287 Dividend per share (yen) 28.00 Record date September 30, 2018 Effective date November 28, 2018 Resolution The Board of Directors Meeting on February 1, 2019 Type of shares Common shares Total amount of dividends (millions of yen) 49,287 Dividend per share (yen) 28.00 Record date December 31, 2018 Effective date February 28, 2019 For the year ended March 31, 2020 Resolution The Board of Directors Meeting on May 8, 2019 Type of shares Common shares Total amount of dividends (millions of yen) 49,287 Dividend per share (yen) 28.00 Record date March 31, 2019 Effective date June 3, 2019 Resolution The Board of Directors Meeting on August 2, 2019 Type of shares Common shares Total amount of dividends (millions of yen) 49,287 Dividend per share (yen) 28.00 Record date June 30, 2019 Effective date August 30, 2019 Resolution The Board of Directors Meeting on November 8, 2019 Type of shares Common shares Total amount of dividends (millions of yen) 49,287 Dividend per share (yen) 28.00 Record date September 30, 2019 Effective date November 29, 2019 Resolution The Board of Directors Meeting on February 7, 2020 Type of shares Common shares Total amount of dividends (millions of yen) 48,932 Dividend per share (yen) 28.00 Record date December 31, 2019 Effective date March 4, 2020 2) Dividends payable of which record date was in the year ended March 31, 2020, effective after the period Resolution The Board of Directors Meeting on May 12, 2020 Type of shares Common shares Resource for dividend Retained earnings Total amount of dividends (millions of yen) 48,363 Dividend per share (yen) 28.00 Record date March 31, 2020 Effective date June 3, 2020

Sales Revenue (Tables)

Sales Revenue (Tables)	12 Months Ended
	Mar. 31, 2020
Text block [abstract]
Summary of Reconciliation of the Disaggregated Sales Revenue with the Four Reportable Segments	The sales revenue disaggregated by geographical markets based on the location of the customer and the reconciliation of the disaggregated sales revenue with the four reportable segments for the years ended March 31, 2019 and 2020 are as follows: For the year ended March 31, 2019 Yen (millions) Motorcycle Automobile Financial Life Total Revenue arising from contracts with customers Japan ¥ 79,297 ¥ 1,590,032 ¥ 86,437 ¥ 87,503 ¥ 1,843,269 North America 188,022 6,163,120 1,013,987 135,277 7,500,406 Europe 159,645 427,347 — 60,993 647,985 Asia 1,372,583 2,359,557 33 46,402 3,778,575 Other Regions 297,757 521,124 — 20,608 839,489 Total ¥ 2,097,304 ¥ 11,061,180 ¥ 1,100,457 ¥ 350,783 ¥ 14,609,724 Revenue arising from the other sources* 2,851 10,937 1,264,898 207 1,278,893 Total ¥ 2,100,155 ¥ 11,072,117 ¥ 2,365,355 ¥ 350,990 ¥ 15,888,617 Explanatory note: * Revenue arising from the other sources primarily includes lease revenues recognized under IAS 17 and interest recognized under IFRS 9. For the year ended March 31, 2020 Yen (millions) Motorcycle Automobile Financial Life Total Revenue arising from contracts with customers Japan ¥ 77,241 ¥ 1,473,552 ¥ 130,775 ¥ 76,114 ¥ 1,757,682 North America 203,822 5,648,818 1,108,827 133,070 7,094,537 Europe 144,392 359,166 — 53,233 556,791 Asia 1,329,352 2,048,588 11 46,433 3,424,384 Other Regions 295,093 425,900 — 16,200 737,193 Total ¥ 2,049,900 ¥ 9,956,024 ¥ 1,239,613 ¥ 325,050 ¥ 13,570,587 Revenue arising from the other sources* 9,435 3,056 1,347,352 579 1,360,422 Total ¥ 2,059,335 ¥ 9,959,080 ¥ 2,586,965 ¥ 325,629 ¥ 14,931,009 Explanatory note: * Revenue arising from the other sources primarily includes lease revenues recognized under IFRS 16 and interest recognized under IFRS 9.
Summary of Information Regarding Receivables from Contracts with Customers and Contract Liabilities	The receivables from contracts with customers and contract liabilities for the years ended March 31, 2019 and 2020 are as follows: Yen (millions) 2019 2020 Receivables from contracts with customers: Trade receivables ¥ 707,337 ¥ 516,705 Contract liabilities: Other current liabilities 214,888 221,959 Other noncurrent liabilities 165,722 167,076
Summary of Revenue Expected to be Recognized in the Future Related to Performance Obligations that are Unsatisfied (or Partially Unsatisfied)	The revenue expected to be recognized in the future related to performance obligations that are unsatisfied (or partially unsatisfied) as of March 31, 2019 and 2020 are as follows: Yen (millions) 2019 2020 Within 1 year ¥ 103,734 ¥ 106,745 Between 1 and 5 years 185,456 201,925 Later than 5 12,791 1,860 Total ¥ 301,981 ¥ 310,530
Summary of Assets Recognized Costs Obtain a Contract With Customer	The assets recognized from the costs to obtain a contract with a customer as of March 31, 2019 and 2020 are as follows: Yen (millions) 2019 2020 Assets recognized from the costs to obtain a contract with a customer ¥ 105,471 ¥ 100,751

Research and Development (Table

Research and Development (Tables)	12 Months Ended
	Mar. 31, 2020
Text block [abstract]
Summary of Research and Development Costs	Research and development costs for the years ended March 31, 2018, 2019 and 2020 consist of the following: Yen (millions) 2018 2019 2020 Research and development expenditures incurred during the reporting period ¥ 730,734 ¥ 820,037 ¥ 821,478 Amount capitalized (132,800 ) (161,232 ) (192,397 ) Amortization and impairment losses of capitalized development costs 153,922 148,100 175,042 Total ¥ 751,856 ¥ 806,905 ¥ 804,123

Finance Income and Finance Co_2

Finance Income and Finance Costs (Tables)	12 Months Ended
	Mar. 31, 2020
Text block [abstract]
Summary of Finance Income and Finance Costs	Finance income and finance costs for the years ended March 31, 2018, 2019 and 2020 consist of the followin g Yen (millions) 2018 2019 2020 Interest income: Financial assets measured at amortized cost ¥ 39,645 ¥ 46,862 ¥ 47,679 Financial assets measured at fair value through other comprehensive income — 323 249 Financial assets measured at fair value through profit or loss 1,546 1,433 1,484 Total 41,191 48,618 49,412 Interest expense: Financial liabilities measured at amortized cost (12,970 ) (13,217 ) (15,624 ) Other — — (9,065 ) Total (12,970 ) (13,217 ) (24,689 ) Other, net: Dividends received: Financial assets measured at fair value through other 4,708 5,056 5,169 Financial assets measured at fair value through profit or 15 21 25 Gains (losses) on derivatives: Financial assets and financial liabilities measured at fair value through profit or loss 67,132 (54,897 ) (19,270 ) Gains (losses) on foreign exchange (69,197 ) 31,266 (24,942 ) Other 2,893 7,331 6,373 Total 5,551 (11,223 ) (32,645 ) Total ¥ 33,772 ¥ 24,178 ¥ (7,922 )

Income Taxes (Tables)

Income Taxes (Tables)	12 Months Ended
	Mar. 31, 2020
Text block [abstract]
Profit Before Income Taxes and Income Tax Expense	Profit before income taxes and income tax expense for the years ended March 31, 2018, 2019 and 2020 consist of the following: Yen (millions) 2018 2019 2020 Japan Foreign Total Japan Foreign Total Japan Foreign Total Profit (loss) before income taxes ¥ 126,915 ¥ 988,058 ¥ 1,114,973 ¥ 70,805 ¥ 908,570 ¥ 979,375 ¥ (63,390 ) ¥ 853,308 ¥ 789,918 Income tax expense (benefit): Current taxes (2,956 ) 280,316 277,360 32,937 183,828 216,765 11,036 233,570 244,606 Deferred taxes 25,149 (316,175 ) (291,026 ) 58,121 28,203 86,324 17,470 17,910 35,380 Total ¥ 22,193 ¥ (35,859 ) ¥ (13,666 ) ¥ 91,058 ¥ 212,031 ¥ 303,089 ¥ 28,506 ¥ 251,480 ¥ 279,986
Reconciliation of Statutory Income Tax Rate to Average Effective Tax Rate	The Japanese statutory income tax rate for the years ended March 31, 2018, 2019 and 2020 differs from the average effective tax rate for the following reasons: 2018 2019 2020 Statutory income tax rate 30.4 % 30.2 % 30.2 % Difference in statutory income tax rates of foreign subsidiaries (1.1 ) (4.3 ) (3.9 ) Effects of investments accounted for using the equity method (6.7 ) (7.1 ) (6.2 ) Effects of undistributed earnings and withholding taxes on royalty 7.0 7.7 8.6 Changes in unrecognized deferred tax assets (0.2 ) 8.3 7.8 Effects of income and expense not taxable and deductible for tax purpose 0.1 0.2 0.8 Effects of tax credit (2.1 ) (3.2 ) (3.0 ) Other adjustments relating to prior years 0.3 (0.1 ) (0.7 ) Adjustments for the uncertain tax treatments on income taxes 0.7 0.8 0.2 Adjustments for the changes in income tax laws* (30.1 ) (2.5 ) 2.3 Other 0.5 0.9 (0.7 ) Average effective tax rate (1.2 )% 30.9 % 35.4 % Explanatory note: * The Tax Cuts and Jobs Act (“the Act”) was enacted in the United States on December 22, 2017. Due to the Act, the federal corporate income tax rate in the United States applicable to the Company’s United States businesses was reduced from 35% to a blended rate of 31.55% for the fiscal year ended March 31, 2018 and to 21% from the fiscal year commencing on April 1, 2018. The Company recognized impacts of the enactment of the Act, including a decrease in income tax expenses of ¥346,129 million, as a result of reevaluating deferred tax assets and liabilities in its consolidated subsidiaries in the United States based on the reduced federal corporate income tax rate, for the fiscal year ended March 31, 2018.
Components by Major Factor in Deferred Tax Assets and Deferred Tax Liabilities	The components by major factor in deferred tax assets and deferred tax liabilities as of March 31, 2019 and 2020 are as follows: Yen (millions) 2019 2020 Deferred tax assets: Inventories ¥ 39,044 ¥ 29,899 Accrued expenses 75,378 66,115 Provisions 101,780 75,858 Property, plant and equipment 18,462 18,936 Intangible assets 22,776 18,198 Retirement benefit liabilities 95,324 138,735 Carryforward of unused tax losses 54,817 58,023 Carryforward of unused tax credit 43,130 50,472 Other 124,588 107,848 Total ¥ 575,299 ¥ 564,084 Deferred tax liabilities: Property, plant and equipment ¥ 81,472 ¥ 76,126 Intangible assets 180,607 183,985 Other financial assets 21,720 5,468 Finance leases 41,050 40,892 Operating leases 718,981 701,303 Undistributed earnings 58,112 56,136 Other 50,450 66,489 Total ¥ 1,152,392 ¥ 1,130,399 Net deferred tax assets (liabilities) ¥ (577,093 ) ¥ (566,315 )
Changes in Deferred Tax Assets and Deferred Tax Liabilities Recognized as Income Tax Expense in the Consolidated Statements of Income	The changes in deferred tax assets and deferred tax liabilities recognized as income tax expense in the consolidated statements of income for the years ended March 31, 2018, 2019 and 2020 are as follows: Yen (millions) 2018 2019 2020 Inventories ¥ 5,541 ¥ 28,022 ¥ 8,738 Provisions 45,492 20,711 22,185 Property, plant and equipment (27,520 ) (499 ) (3,503 ) Retirement benefit liabilities (623 ) 3,237 (5,597 ) Operating leases (328,950 ) 49,142 (3,697 ) Undistributed earnings 12,655 215 (1,059 ) Carryforward of unused tax losses 9,226 (19,335 ) (6,378 ) Carryforward of unused tax credit (10,300 ) (8,038 ) (8,423 ) Other 3,453 12,869 33,114 Total ¥ (291,026 ) ¥ 86,324 ¥ 35,380
Deductible Temporary Differences, Carryforward of Unused Tax Losses and Unused Tax Credit for which Deferred Tax Assets are not Recognized	Deductible temporary differences, carryforward of unused tax losses and carryforward of unused tax credit for which deferred tax assets are not recognized as of March 31, 2019 and 2020 are as follows: Yen (millions) 2019 2020 Deductible temporary differences ¥ 560,738 ¥ 665,917 Carryforward of unused tax losses 261,294 391,272 Carryforward of unused tax credit 3,850 1,242
Components by Expiry of the Carryforward of Unused Tax Losses for which Deferred Tax Assets are not Recognized	The components by expiry of the carryforward of unused tax losses for which deferred tax assets are not recognized as of March 31, 2019 and 2020 are as follows: Yen (millions) 2019 2020 Within 1 year ¥ 8,759 ¥ 28,613 Between 1 and 5 years 67,352 59,027 Between 5 and 20 years 101,953 164,371 Indefinite periods 83,230 139,261 Total ¥ 261,294 ¥ 391,272
Components by Expiry of Carryforward of Unused Tax Credits for which Deferred Tax Assets are not Recognized	The components by expiry of the carryforward of unused tax credit for which deferred tax assets are not recognized as of March 31, 2019 and 2020 are as follows: Yen (millions) 2019 2020 Within 1 year ¥ 570 ¥ 343 Between 1 and 5 years 1,422 672 Between 5 and 20 years 1,858 227 Indefinite periods — — Total ¥ 3,850 ¥ 1,242

Earnings Per Share (Tables)

Earnings Per Share (Tables)	12 Months Ended
	Mar. 31, 2020
Text block [abstract]
Summary of Earnings Per Share	Earnings per share attributable to owners of the parent for the years ended March 31, 2018, 2019 and 2020 are calculated based on the following information. There were no significant dilutive potential common shares outstanding for the years ended March 31, 2018, 2019 and 2020. 2018 2019 2020 Profit for the year attributable to owners of the parent (millions of yen) ¥ 1,059,337 ¥ 610,316 ¥ 455,746 Weighted average number of common shares outstanding, basic (shares) 1,793,088,970 1,763,983,221 1,752,006,211 Basic earnings per share attributable to owners of the parent (yen) ¥ 590.79 ¥ 345.99 ¥ 260.13

Financial Risk Management (Tabl

Financial Risk Management (Tables)	12 Months Ended
	Mar. 31, 2020
Statement [LineItems]
Analysis of the Age of Receivables from Financial Services that are Past Due	The analysis of the age of receivables from financial services that are past due as of March 31, 2019 and 2020 is as follows: Yen (millions) As of March 31, 2019 Less than 30 days 30-59 days 60-89 days 90 days and Total Consumer finance receivables: Retail ¥ 204,475 ¥ 35,706 ¥ 7,572 ¥ 6,070 ¥ 253,823 Finance lease 349 108 26 198 681 Dealer finance receivables: Wholesale 21,509 7,407 92 3,858 32,866 Total ¥ 226,333 ¥ 43,221 ¥ 7,690 ¥ 10,126 ¥ 287,370 Yen (millions) As of March 31, 2020 Less than 30 days 30-59 days 60-89 days 90 days and Total Consumer finance receivables: Retail ¥ 199,260 ¥ 38,862 ¥ 9,621 ¥ 6,609 ¥ 254,352 Finance lease 152 31 9 280 472 Dealer finance receivables: Wholesale 16,959 6,254 395 156 23,764 Total ¥ 216,371 ¥ 45,147 ¥ 10,025 ¥ 7,045 ¥ 278,588
Summary of retail receivables included in consumer finance receivables	The balances of retail receivables included in consumer finance receivables as of March 31, 2019 and 2020 are as follows: Yen (millions) 12-month ECL Lifetime ECL Total As of March 31, 2019 Not credit-impaired Credit-impaired Consumer finance receivables: Retail* ¥ 3,893,725 ¥ 691,401 ¥ 17,722 ¥ 4,602,848 Yen (millions) 12-month ECL Lifetime ECL Total As of March 31, 2020 Not credit-impaired Credit-impaired Consumer finance receivables: Retail* ¥ 2,969,699 ¥ 1,450,663 ¥ 20,002 ¥ 4,440,364 Explanatory note: * The tables above represent the gross amounts of retail receivables by stages of ECL model since the expected credit losses are measured collectively by our finance subsidiaries and the balances of those receivables are not directly allocated to the risk ratings.
Dealer Finance Receivables and Undiscounted Maximum Amounts of Potential Payment for Loan Commitments	The balances of dealer finance receivables and the undiscounted maximum amounts of potential payment for loan commitments by this risk rating as of March 31, 2019 and 2020 are as follows: Yen (millions) 12-month ECL Lifetime ECL Total As of March 31, 2019 Not credit-impaired Credit-impaired Dealer finance receivables: Group A ¥ 469,877 ¥ 9,224 ¥ — ¥ 479,101 Group B 202,993 13,223 16,897 233,113 Total ¥ 672,870 ¥ 22,447 ¥ 16,897 ¥ 712,214 Loan commitments: Group A ¥ 46,962 ¥ — ¥ — ¥ 46,962 Group B 10,479 — — 10,479 Total ¥ 57,441 ¥ — ¥ — ¥ 57,441 The undiscounted maximum amount of potential payment for guarantees of bank loans of employees for their housing costs as of March 31, 2019 is ¥11,953 million. Yen (millions) 12-month ECL Lifetime ECL Total As of March 31, 2020 Not credit-impaired Credit-impaired Dealer finance receivables: Group A ¥ 414,323 ¥ 23,308 ¥ 77 ¥ 437,708 Group B 217,741 9,900 1,643 229,284 Total ¥ 632,064 ¥ 33,208 ¥ 1,720 ¥ 666,992 Loan commitments: Group A ¥ 43,823 ¥ — ¥ — ¥ 43,823 Group B 19,832 — — 19,832 Total ¥ 63,655 ¥ — ¥ — ¥ 63,655
Non-derivative Financial Liabilities by Maturity	Non-derivative Yen (millions) As of March 31, 2019 Carrying amount Within 1 year Between Later than Total contractual Trade payables ¥ 1,184,882 ¥ 1,184,882 ¥ — ¥ — ¥ 1,184,882 Financing liabilities 7,331,120 3,321,576 4,089,215 239,638 7,650,429 Accrued expenses 476,300 476,300 — — 476,300 Other financial liabilities 127,108 66,240 29,615 31,416 127,271 Total ¥ 9,119,410 ¥ 5,048,998 ¥ 4,118,830 ¥ 271,054 ¥ 9,438,882 Yen (millions) As of March 31, 2020 Carrying amount Within 1 year Between Later than Total contractual Trade payables ¥ 958,469 ¥ 958,468 ¥ — ¥ — ¥ 958,468 Financing liabilities 7,469,686 3,341,226 3,964,660 288,041 7,593,927 Accrued expenses 449,716 449,716 — — 449,716 Other financial liabilities 397,467 88,629 98,285 230,562 417,476 Total ¥ 9,275,338 ¥ 4,838,039 ¥ 4,062,945 ¥ 518,603 ¥ 9,419,587
Derivative Financial Liabilities by Maturity	Derivative financial liabilities by maturity as of March 31, 2019 and 2020 are as follows: Yen (millions) As of March 31, 2019 Within 1 year Between 1 and 5 years Later than 5 years Total contractual Derivative financial liabilities ¥ 41,518 ¥ 49,513 ¥ 1,609 ¥ 92,640 Yen (millions) As of March 31, 2020 Within 1 year Between 1 and 5 years Later than 5 years Total contractual Derivative financial liabilities ¥ 51,697 ¥ 69,621 ¥ 365 ¥ 121,683
Summary of Lease liabilities by maturity	Other financial liabilities include lease liabilities. Lease liabilities by maturity as of March 31, 2020 is as follows: Yen (millions) As of March 31, 2020 Carrying amount Within 1 year Between Later than Total contractual Lease liabilities ¥ 330,04 0 ¥ 55,486 ¥ 90,999 ¥ 203,563 ¥ 350,048
Currency risk [member]
Statement [LineItems]
Market Risk Sensitivity Analysis	The following scenario demonstrates the impact of a 1% appreciation of the Japanese yen against the U.S. dollar on profit before income taxes, holding all variables other than the foreign currency exchange rate constant. Yen (millions) 2019 2020 Impact on profit before income taxes ¥ (777) ¥ (828)
Interest rate risk [member]
Statement [LineItems]
Market Risk Sensitivity Analysis	The following scenario demonstrates the impact of a 100 basis point rise in interest rates on profit before income taxes, holding all variables other than interest rates constant. Yen (millions) 2019 2020 Impact on profit before income taxes ¥ (1,915) ¥ (4,861)
Credit facility [member]
Statement [LineItems]
Unused Portions of Credit Facility	The unused portions of the credit facility of Honda’s commercial paper and medium-term note programs as of March 31, 2019 and 2020 are as follows: Yen (millions) 2019 2020 Commercial paper ¥ 602,243 ¥ 481,352 Medium-term notes 1,229,911 2,791,490 Total ¥ 1,832,154 ¥ 3,272,842
Committed lines of credit [member]
Statement [LineItems]
Unused Portions of Credit Facility	The unused portions of the committed lines of credit extended by financial institutions to Honda as of March 31, 2019 and 2020 are as follows: Yen (millions) 2019 2020 Commercial paper programs ¥ 1,080,503 ¥ 1,084,917 Other 58,199 63,484 Total ¥ 1,138,702 ¥ 1,148,401

Fair Value (Tables)

Fair Value (Tables)	12 Months Ended
	Mar. 31, 2020
Measured at fair value on a recurring basis [member]
Statement [LineItems]
Financial Assets and Financial Liabilities	Assets and liabilities measured at fair value on a recurring basis as of March 31, 2019 and 2020 consist of the following: Yen (millions) As of March 31, 2019 Level 1 Level 2 Level 3 Total Other financial assets: Financial assets measured at fair value through profit or loss: Derivatives Foreign exchange instruments ¥ — ¥ 12,233 ¥ — ¥ 12,233 Interest rate instruments — 34,164 — 34,164 Total — 46,397 — 46,397 Debt securities 21,090 31,551 5,439 58,080 Financial assets measured at fair value through other Debt securities — 10,495 — 10,495 Equity securities 108,879 — 98,156 207,035 Total ¥ 129,969 ¥ 88,443 ¥ 103,595 ¥ 322,007 Other financial liabilities: Financial liabilities measured at fair value through profit or loss: Derivatives Foreign exchange instruments ¥ — ¥ 35,449 ¥ — ¥ 35,449 Interest rate instruments — 34,042 — 34,042 Total — 69,491 — 69,491 Total ¥ — ¥ 69,491 ¥ — ¥ 69,491 Yen (millions) As of March 31, 2020 Level 1 Level 2 Level 3 Total Other financial assets: Financial assets measured at fair value through profit or loss: Derivatives Foreign exchange instruments ¥ — ¥ 19,215 ¥ — ¥ 19,215 Interest rate instruments — 76,589 — 76,589 Total — 95,804 — 95,804 Debt securities 18,175 34,949 5,224 58,348 Financial assets measured at fair value through other Debt securities — 9,069 — 9,069 Equity securities 78,493 — 99,508 178,001 Total ¥ 96,668 ¥ 139,822 ¥ 104,732 ¥ 341,222 Other financial liabilities: Financial liabilities measured at fair value through profit or loss: Derivatives Foreign exchange instruments ¥ — ¥ 24,834 ¥ — ¥ 24,834 Interest rate instruments — 90,334 — 90,334 Total — 115,168 — 115,168 Total ¥ — ¥ 115,168 ¥ — ¥ 115,168
Measured at fair value on a recurring basis [member] | Level 3 [member]
Statement [LineItems]
Financial Assets and Financial Liabilities	The changes in Level 3 assets and liabilities measured at fair value on a recurring basis for the years ended March 31, 2019 and 2020 are as follows: Yen (millions) For the year ended March 31, 2019 Debt securities Equity securities Balance as of April 1, 2018 ¥ 5,206 ¥ 12,671 Total gains or losses: Profit or loss (42 ) — Other comprehensive income — (3,824 ) Purchases — 89,651 Sales — (295 ) Exchange differences on translating foreign operations 275 (47 ) Balance as of March 31, 2019 ¥ 5,439 ¥ 98,156 Unrealized gains or losses included in profit or loss on assets held at March 31, 2019 ¥ (42 ) ¥ — Yen (millions) For the year ended March 31, 2020 Debt securities Equity securities Balance as of April 1, 2019 ¥ 5,439 ¥ 98,156 Total gains or losses: Profit or loss (28 ) — Other comprehensive income — (3,584 ) Purchases — 5,222 Sales — (40 ) Exchange differences on translating foreign operations (187 ) (246 ) Balance as of March 31, 2020 ¥ 5,224 ¥ 99,508 Unrealized gains or losses included in profit or loss on assets held at March 31, 2020 ¥ (28 ) ¥ — Explanatory notes: 1. Gains or losses included in profit or loss for the years ended March 31, 2019 and 2020 are included in other, net in finance income and finance costs in the consolidated statements of income. 2. Gains or losses on equity securities included in other comprehensive income for the years ended March 31, 2019 and 2020 are included in net changes in revaluation of financial assets measured at fair value through other comprehensive income under items that will not be reclassified to profit or loss in the consolidated statements of comprehensive income.
At cost [member]
Statement [LineItems]
Financial Assets and Financial Liabilities	The carrying amounts and fair values of financial assets and financial liabilities measured at amortized cost as of March 31, 2019 and 2020 are as follows: Yen (millions) 2019 2020 Carrying Fair value Carrying Fair value Receivables from financial services ¥ 5,405,250 ¥ 5,417,297 ¥ 5,161,165 ¥ 5,173,553 Debt securities 54,964 54,952 62,204 62,210 Financing liabilities 7,331,120 7,355,632 7,469,686 7,408,800

Offsetting of Financial Asset_2

Offsetting of Financial Assets and Financial Liabilities (Tables)	12 Months Ended
	Mar. 31, 2020
Text block [abstract]
Offsetting Information Regarding Financial Assets and Financial Liabilities	The offsetting information regarding financial assets and financial liabilities as of March 31, 2019 and 2020 is as follows: Yen (millions) As of March 31, 2019 Gross amounts of Amounts offset Net amounts presented Amounts not offset due to not Net Amounts Other financial assets Derivatives ¥ 46,397 ¥ — ¥ 46,397 ¥ (34,407 ) ¥ 11,990 Other financial Derivatives 69,491 — 69,491 (34,407 ) 35,084 Yen (millions) As of March 31, 2020 Gross amounts of Amounts offset Net amounts presented Amounts not offset due to not Net Amounts Other financial assets Derivatives ¥ 95,804 ¥ — ¥ 95,804 ¥ ( 81 059 ) ¥ 1 4 745 Other financial Derivatives 115,168 — 115,168 (8 1 059 ) 3 4 109

Commitments and Contingent Li_2

Commitments and Contingent Liabilities (Tables)	12 Months Ended
	Mar. 31, 2020
Text block [abstract]
Commitments for Purchases of Property, Plant and Equipment and Other Commitments	Commitments for purchases of property, plant and equipment and other commitments as of March 31, 2019 and 2020 are as follows: Yen (millions) 2019 2020 Commitments for purchases of property, plant and equipment and other commitments ¥ 99,379 ¥ 80,670
Future Minimum Lease Payments Under Non-cancelable Operating Leases	Future minimum lease payments under non-cancelable Yen (millions) 2019 Within 1 year ¥ 23,733 Between 1 and 5 years 47,556 Later than 5 years 44,345 Total ¥ 115,634
Lease Payments under Operating Leases Recognized as Expenses	Lease payments under operating leases recognized as expenses for the years ended March 31, 2018 and 2019 are as follows: Yen (millions) 2018 2019 Lease payments under operating leases recognized as expenses ¥ 35,180 ¥ 41,529

Related Parties (Tables)

Related Parties (Tables)	12 Months Ended
	Mar. 31, 2020
Text block [abstract]
Balances of Receivables and Payables with Affiliates and Joint Ventures	The balances of receivables and payables with affiliates and joint ventures as of March 31, 2019 and 2020 are as follows: Yen (millions) 2019 2020 Receivables: Affiliates ¥ 22,518 ¥ 19,120 Joint ventures 237,880 204,126 Total ¥ 260,398 ¥ 223,246 Payables: Affiliates ¥ 141,576 ¥ 108,267 Joint ventures 35,044 27,128 Total ¥ 176,620 ¥ 135,395
Amount of Transactions with Affiliates and Joint Ventures	The amount of the transactions with affiliates and joint ventures for the years ended March 31, 2018, 2019 and 2020 are as follows: Yen (millions) 2018 2019 2020 Sales revenue: Affiliates ¥ 119,725 ¥ 113,814 ¥ 109,615 Joint ventures 744,435 724,712 722,896 Total ¥ 864,160 ¥ 838,526 ¥ 832,511 Purchase: Affiliates ¥ 1,407,755 ¥ 1,416,729 ¥ 1,241,314 Joint ventures 143,800 135,787 166,885 Total ¥ 1,551,555 ¥ 1,552,516 ¥ 1,408,199
Compensation Paid to Directors	Compensation paid to the directors of the Company for the years ended March 31, 2018, 2019 and 2020 are as follows: Yen (millions) 2018 2019 2020 Remuneration ¥ 719 ¥ 732 ¥ 691 Bonus 231 172 101 Stock compensation — 125 140 Total ¥ 950 ¥ 1,029 ¥ 932
Major Consolidated Subsidiaries	Major consolidated subsidiaries as of March 31, 2020 are as follows: Company Country of Function Percentage Honda R&D Co., Ltd. Japan Research & Development 100.0 Honda Finance Co., Ltd. Japan Finance 100.0 American Honda Motor Co., Inc. U.S.A. Sales 100.0 Honda Aero., Inc. U.S.A. Manufacturing 100.0 Honda North America, Inc. U.S.A. Coordination of Subsidiaries Operation 100.0 Honda of America Mfg., Inc. U.S.A. Manufacturing 100.0 American Honda Finance Corporation U.S.A. Finance 100.0 Honda Aircraft Company, LLC U.S.A. Research & Development, Manufacturing and Sales 100.0 Honda Manufacturing of Alabama, LLC U.S.A. Manufacturing 100.0 Honda Manufacturing of Indiana, LLC U.S.A. Manufacturing 100.0 Honda Transmission Mfg. of America, Inc. U.S.A. Manufacturing 100.0 Honda R&D Americas, Inc. U.S.A. Research & Development 100.0 Honda Canada Inc. Canada Manufacturing and Sales 100.0 Honda Canada Finance Inc. Canada Finance 100.0 Honda de Mexico, S.A. de C.V. Mexico Manufacturing and Sales 100.0 Honda Motor Europe Limited U.K. Coordination of Subsidiaries 100.0 Honda of the U.K. Manufacturing Ltd. U.K. Manufacturing 100.0 Honda Finance Europe plc U.K. Finance 100.0 Honda Bank GmbH Germany Finance 100.0 Honda Turkiye A.S Turkey Manufacturing and Sales 100.0 Honda Motor (China) Investment Co., Ltd. China Coordination of Subsidiaries 100.0 Honda Auto Parts Manufacturing Co., Ltd. China Manufacturing 100.0 Honda Motorcycle & Scooter India (Private) Ltd. India Manufacturing and Sales 100.0 Honda Cars India Limited India Manufacturing and Sales 100.0 P.T. Honda Precision Parts Manufacturing Indonesia Manufacturing 100.0 P.T. Honda Prospect Motor Indonesia Manufacturing and Sales 51.0 Honda Malaysia Sdn Bhd Malaysia Manufacturing and Sales 51.0 Honda Taiwan Co., Ltd. Taiwan Sales 100.0 Asian Honda Motor Co., Ltd. Thailand Coordination of Subsidiaries Operation and Sales 100.0 Honda Leasing (Thailand) Co., Ltd. Thailand Finance 100.0 Honda Automobile (Thailand) Co., Ltd. Thailand Manufacturing and Sales 89.0 Thai Honda Manufacturing Co., Ltd. Thailand Manufacturing 83.0 A.P. Honda Co., Ltd. Thailand Sales 61.0 Honda Vietnam Co., Ltd. Vietnam Manufacturing and Sales 70.0 Honda Motor de Argentina S.A. Argentina Manufacturing and Sales 100.0 Honda South America Ltda. Brazil Coordination of Subsidiaries Operation 100.0 Banco Honda S.A. Brazil Finance 100.0 Honda Automoveis do Brasil Ltda. Brazil Manufacturing and Sales 100.0 Moto Honda da Amazonia Ltda. Brazil Manufacturing and Sales 100.0

Basis of Preparation - Summary

Basis of Preparation - Summary of reconcilation of lease liabilities after adoption of new standard (Detail) - JPY (¥) ¥ in Millions	Mar. 31, 2020	Apr. 01, 2019	Mar. 31, 2019
Disclosure Of Reconcilation Of Lease Liabilities After Adoption Of New Standard [Abstract]
Future minimum lease payments under non-cancelable operating leases as of March 31, 2019	¥ 330,040	¥ 334,540	¥ 115,634
Discounted using the incremental borrowing rate as of April 1, 2019		108,147
Add: Finance lease obligations		62,308
Add: Cancelable operating leases		11,612
Add: Extension options reasonably certain to be exercised		152,473
Lease liabilities recognized as of April 1, 2019	¥ 330,040	¥ 334,540	¥ 115,634

Basis of Preparation - Addition

Basis of Preparation - Additional Information (Detail) - JPY (¥) ¥ in Millions	Mar. 31, 2020	Apr. 01, 2019	Mar. 31, 2019
Basis of preparation [line items]
Lease liabilities	¥ 330,040	¥ 334,540	¥ 115,634
Right-of-use assets	¥ 306,042		¥ 319,668
Weighted average rate		1.19%
Estimated Amount [member]
Basis of preparation [line items]
Lease liabilities		¥ 272,232
Right-of-use assets		¥ 272,232

Significant Accounting Polici_3

Significant Accounting Policies - Additional Information (Detail)	12 Months Ended
	Mar. 31, 2020
Accounting Policies [Line Items]
Consideration payment period	30 days
Capitalized development costs [member] | Bottom of range [member]
Accounting Policies [Line Items]
Estimated useful lives of intangible assets	2 years
Capitalized development costs [member] | Top of range [member]
Accounting Policies [Line Items]
Estimated useful lives of intangible assets	6 years
Other [member] | Bottom of range [member]
Accounting Policies [Line Items]
Estimated useful lives of intangible assets	3 years
Other [member] | Top of range [member]
Accounting Policies [Line Items]
Estimated useful lives of intangible assets	5 years
Buildings and structures [member] | Bottom of range [member]
Accounting Policies [Line Items]
Estimated useful lives of property, plant and equipment	3 years
Buildings and structures [member] | Top of range [member]
Accounting Policies [Line Items]
Estimated useful lives of property, plant and equipment	50 years
Machinery and equipment [member] | Bottom of range [member]
Accounting Policies [Line Items]
Estimated useful lives of property, plant and equipment	2 years
Machinery and equipment [member] | Top of range [member]
Accounting Policies [Line Items]
Estimated useful lives of property, plant and equipment	20 years

Segment Information - Additiona

Segment Information - Additional Information (Detail) ¥ in Millions	12 Months Ended
	Mar. 31, 2020Segments	Mar. 31, 2019JPY (¥)Segments
Disclosure of operating segments [line items]
Number of reportable segments | Segments	4	4
Impairment loss, employee benefits and other expenses		¥ 68,092
Cost of sales [member]
Disclosure of operating segments [line items]
Impairment loss, employee benefits and other expenses		56,590
Selling, general and administrative expenses [member]
Disclosure of operating segments [line items]
Impairment loss, employee benefits and other expenses		¥ 11,502

Segment Information - Summary o

Segment Information - Summary of Segment Information (Detail) - JPY (¥) ¥ in Millions	12 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2018
Disclosure of operating segments [line items]
Sales revenue	¥ 14,931,009	¥ 15,888,617	¥ 15,361,146
Segment profit (loss)	633,637	726,370	833,558
Share of profit of investments accounted for using the equity method	164,203	228,827	247,643
Segment assets	20,461,465	20,419,122	19,349,164
Investments accounted for using the equity method	655,475	713,039	679,517
Depreciation and amortization	1,461,403	1,468,685	1,454,116
Capital expenditures	2,858,339	2,657,252	2,394,634
Impairment losses on non-financial assets	94,216	46,808	15,605
Provision for credit and lease residual losses on receivables from financial services	56,894	34,720	36,699
External customers [member]
Disclosure of operating segments [line items]
Sales revenue	14,931,009	15,888,617	15,361,146
Intersegment [member]
Disclosure of operating segments [line items]
Sales revenue	0
Operating segments [member]
Disclosure of operating segments [line items]
Sales revenue	15,205,564	16,145,217	15,592,352
Segment profit (loss)	633,637	726,370	833,558
Share of profit of investments accounted for using the equity method	164,203	228,827	247,643
Segment assets	19,941,995	20,012,555	19,137,217
Investments accounted for using the equity method	655,475	713,039	679,517
Depreciation and amortization	1,461,403	1,468,685	1,454,116
Capital expenditures	2,858,339	2,657,252	2,394,634
Impairment losses on non-financial assets	94,216	46,808	15,605
Provision for credit and lease residual losses on receivables from financial services	56,894	34,720	36,699
Operating segments [member] | External customers [member]
Disclosure of operating segments [line items]
Sales revenue	14,931,009	15,888,617	15,361,146
Operating segments [member] | Intersegment [member]
Disclosure of operating segments [line items]
Sales revenue	274,555	256,600	231,206
Operating segments [member] | Motorcycle business [member]
Disclosure of operating segments [line items]
Sales revenue	2,059,335	2,100,155	2,038,712
Segment profit (loss)	285,668	291,642	267,015
Share of profit of investments accounted for using the equity method	34,526	29,704	31,270
Segment assets	1,483,888	1,523,817	1,533,367
Investments accounted for using the equity method	83,144	88,494	89,498
Depreciation and amortization	67,512	66,680	74,128
Capital expenditures	93,871	74,024	63,927
Impairment losses on non-financial assets	345	1,404	42
Provision for credit and lease residual losses on receivables from financial services	0
Operating segments [member] | Motorcycle business [member] | External customers [member]
Disclosure of operating segments [line items]
Sales revenue	2,059,335	2,100,155	2,038,712
Operating segments [member] | Motorcycle business [member] | Intersegment [member]
Disclosure of operating segments [line items]
Sales revenue	0
Operating segments [member] | Automobile business [member]
Disclosure of operating segments [line items]
Sales revenue	10,194,638	11,287,764	11,045,209
Segment profit (loss)	153,323	209,694	373,840
Share of profit of investments accounted for using the equity method	129,114	198,505	215,843
Segment assets	7,821,499	7,923,802	7,879,769
Investments accounted for using the equity method	566,582	619,091	584,922
Depreciation and amortization	555,153	603,124	616,321
Capital expenditures	498,260	525,419	514,910
Impairment losses on non-financial assets	57,817	32,674	3,648
Provision for credit and lease residual losses on receivables from financial services	0
Operating segments [member] | Automobile business [member] | External customers [member]
Disclosure of operating segments [line items]
Sales revenue	9,959,080	11,072,117	10,852,171
Operating segments [member] | Automobile business [member] | Intersegment [member]
Disclosure of operating segments [line items]
Sales revenue	235,558	215,647	193,038
Operating segments [member] | Financial services business [member]
Disclosure of operating segments [line items]
Sales revenue	2,600,937	2,380,042	2,137,265
Segment profit (loss)	219,704	235,945	196,067
Share of profit of investments accounted for using the equity method	0
Segment assets	10,282,136	10,236,066	9,409,243
Investments accounted for using the equity method	0
Depreciation and amortization	823,996	784,683	748,503
Capital expenditures	2,248,597	2,041,735	1,801,554
Impairment losses on non-financial assets	36,039	12,716	11,911
Provision for credit and lease residual losses on receivables from financial services	56,894	34,720	36,699
Operating segments [member] | Financial services business [member] | External customers [member]
Disclosure of operating segments [line items]
Sales revenue	2,586,965	2,365,355	2,123,194
Operating segments [member] | Financial services business [member] | Intersegment [member]
Disclosure of operating segments [line items]
Sales revenue	13,972	14,687	14,071
Operating segments [member] | Life creation and other businesses [member]
Disclosure of operating segments [line items]
Sales revenue	350,654	377,256	371,166
Segment profit (loss)	(25,058)	(10,911)	(3,364)
Share of profit of investments accounted for using the equity method	563	618	530
Segment assets	354,472	328,870	314,838
Investments accounted for using the equity method	5,749	5,454	5,097
Depreciation and amortization	14,742	14,198	15,164
Capital expenditures	17,611	16,074	14,243
Impairment losses on non-financial assets	15	14	4
Provision for credit and lease residual losses on receivables from financial services	0
Operating segments [member] | Life creation and other businesses [member] | External customers [member]
Disclosure of operating segments [line items]
Sales revenue	325,629	350,990	347,069
Operating segments [member] | Life creation and other businesses [member] | Intersegment [member]
Disclosure of operating segments [line items]
Sales revenue	25,025	26,266	24,097
Reconciling items [member]
Disclosure of operating segments [line items]
Sales revenue	(274,555)	(256,600)	(231,206)
Segment profit (loss)	0
Share of profit of investments accounted for using the equity method	0
Segment assets	519,470	406,567	211,947
Investments accounted for using the equity method	0
Depreciation and amortization	0
Capital expenditures	0
Impairment losses on non-financial assets	0
Provision for credit and lease residual losses on receivables from financial services	0
Reconciling items [member] | External customers [member]
Disclosure of operating segments [line items]
Sales revenue	0
Reconciling items [member] | Intersegment [member]
Disclosure of operating segments [line items]
Sales revenue	¥ (274,555)	¥ (256,600)	¥ (231,206)

Segment Information - Summary_2

Segment Information - Summary of Segment Information (Parenthetical) (Detail) - JPY (¥) ¥ in Millions	12 Months Ended
	Mar. 31, 2020		Mar. 31, 2019	Mar. 31, 2018
Disclosure of operating segments [line items]
Segment assets	¥ 20,461,465		¥ 20,419,122	¥ 19,349,164
Provisions for product warranties	284,350
Write-down of inventories recognized as an expense	37,752		32,565	67,768
Unallocated corporate assets [member]
Disclosure of operating segments [line items]
Segment assets	787,022		682,842	519,780
Product warranties [member]
Disclosure of operating segments [line items]
Provisions for product warranties	¥ 212,275	[1]	¥ 247,194	¥ 219,575
[1]	Honda recognizes provisions for product warranties to cover future product warranty expenses. Honda recognizes costs for general warranties on products Honda sells and for specific warranty programs, including product recalls. Honda recognizes general estimated warranty costs at the time products are sold to customers. Honda also recognizes specific estimated warranty program costs when it is probable that an outflow of resources embodying economic benefits will be required to settle the obligation, and a reliable estimate can be made of the amount of the obligation. These provisions are estimated based on historical warranty claim experience with consideration given to the expected level of future warranty costs as well as current information on repair costs. Provision for product warranties are utilized for expenditures based on the demand from customers and dealers.

Segment Information - Sales Rev

Segment Information - Sales Revenue by Product or Service Groups (Detail) - JPY (¥) ¥ in Millions	12 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2018
Disclosure of products and services [line items]
Sales revenue	¥ 14,931,009	¥ 15,888,617	¥ 15,361,146
Motorcycles and relevant parts [member]
Disclosure of products and services [line items]
Sales revenue	1,921,065	1,986,968	1,919,232
All-terrain vehicles (ATVs), side-by-sides (SxS) and relevant parts [member]
Disclosure of products and services [line items]
Sales revenue	138,270	113,187	119,480
Automobiles and relevant parts [member]
Disclosure of products and services [line items]
Sales revenue	11,199,477	12,173,065	11,813,125
Financial services [member]
Disclosure of products and services [line items]
Sales revenue	1,346,568	1,264,407	1,162,240
Power products and relevant parts [member]
Disclosure of products and services [line items]
Sales revenue	243,251	266,012	266,233
Others [member]
Disclosure of products and services [line items]
Sales revenue	¥ 82,378	¥ 84,978	¥ 80,836

Segment Information - Sales R_2

Segment Information - Sales Revenue and Carrying Amounts of Non-current Assets Other Than Financial Instruments and Deferred Tax Assets Based on Location (Detail) - JPY (¥) ¥ in Millions	12 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2018
Disclosure of geographical areas [line items]
Sales revenue	¥ 14,931,009	¥ 15,888,617	¥ 15,361,146
Non-current assets other than financial instruments, deferred tax assets and net defined benefit assets	8,584,666	8,337,705	8,061,102
External customers [member]
Disclosure of geographical areas [line items]
Sales revenue	14,931,009	15,888,617	15,361,146
Japan [member]
Disclosure of geographical areas [line items]
Non-current assets other than financial instruments, deferred tax assets and net defined benefit assets	3,003,416	2,695,603	2,580,515
Japan [member] | External customers [member]
Disclosure of geographical areas [line items]
Sales revenue	2,307,523	2,394,584	2,240,033
United States [member]
Disclosure of geographical areas [line items]
Non-current assets other than financial instruments, deferred tax assets and net defined benefit assets	4,007,268	3,956,228	3,784,531
United States [member] | External customers [member]
Disclosure of geographical areas [line items]
Sales revenue	7,091,136	7,480,382	7,028,633
Other [member]
Disclosure of geographical areas [line items]
Non-current assets other than financial instruments, deferred tax assets and net defined benefit assets	1,573,982	1,685,874	1,696,056
Other [member] | External customers [member]
Disclosure of geographical areas [line items]
Sales revenue	¥ 5,532,350	¥ 6,013,651	¥ 6,092,480

Segment Information - Supplemen

Segment Information - Supplemental Geographical Information Based on Location (Detail) - JPY (¥) ¥ in Millions	12 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2018
Disclosure of geographical areas [line items]
Sales revenue	¥ 14,931,009	¥ 15,888,617	¥ 15,361,146
Operating profit (loss)	633,637	726,370	833,558
Assets	20,461,465	20,419,122	19,349,164
Non-current assets other than financial instruments, deferred tax assets and net defined benefit assets	8,584,666	8,337,705	8,061,102
External customers [member]
Disclosure of geographical areas [line items]
Sales revenue	14,931,009	15,888,617	15,361,146
Inter-geographic area [member]
Disclosure of geographical areas [line items]
Sales revenue	0
Japan [member]
Disclosure of geographical areas [line items]
Non-current assets other than financial instruments, deferred tax assets and net defined benefit assets	3,003,416	2,695,603	2,580,515
Japan [member] | External customers [member]
Disclosure of geographical areas [line items]
Sales revenue	2,307,523	2,394,584	2,240,033
Geographical consolidation [member]
Disclosure of geographical areas [line items]
Sales revenue	18,305,663	19,836,393	19,041,047
Operating profit (loss)	649,003	719,976	827,680
Assets	20,324,351	20,305,056	19,385,593
Non-current assets other than financial instruments, deferred tax assets and net defined benefit assets	8,584,666	8,337,705	8,061,102
Geographical consolidation [member] | External customers [member]
Disclosure of geographical areas [line items]
Sales revenue	14,931,009	15,888,617	15,361,146
Geographical consolidation [member] | Inter-geographic area [member]
Disclosure of geographical areas [line items]
Sales revenue	3,374,654	3,947,776	3,679,901
Geographical consolidation [member] | Japan [member]
Disclosure of geographical areas [line items]
Sales revenue	4,422,934	4,848,313	4,480,684
Operating profit (loss)	(28,162)	10	86,916
Assets	4,889,920	4,546,640	4,405,523
Non-current assets other than financial instruments, deferred tax assets and net defined benefit assets	3,003,416	2,695,603	2,580,515
Geographical consolidation [member] | Japan [member] | External customers [member]
Disclosure of geographical areas [line items]
Sales revenue	2,307,523	2,394,584	2,240,033
Geographical consolidation [member] | Japan [member] | Inter-geographic area [member]
Disclosure of geographical areas [line items]
Sales revenue	2,115,411	2,453,729	2,240,651
Geographical consolidation [member] | North America [member]
Disclosure of geographical areas [line items]
Sales revenue	8,556,819	9,023,964	8,584,605
Operating profit (loss)	305,315	299,750	278,476
Assets	11,375,801	11,418,194	10,651,191
Non-current assets other than financial instruments, deferred tax assets and net defined benefit assets	4,755,072	4,740,675	4,530,019
Geographical consolidation [member] | North America [member] | External customers [member]
Disclosure of geographical areas [line items]
Sales revenue	8,167,345	8,526,733	8,067,455
Geographical consolidation [member] | North America [member] | Inter-geographic area [member]
Disclosure of geographical areas [line items]
Sales revenue	389,474	497,231	517,150
Geographical consolidation [member] | Europe [member]
Disclosure of geographical areas [line items]
Sales revenue	772,569	927,424	917,214
Operating profit (loss)	14,996	(6,620)	15,837
Assets	689,158	694,606	727,045
Non-current assets other than financial instruments, deferred tax assets and net defined benefit assets	58,735	65,500	105,649
Geographical consolidation [member] | Europe [member] | External customers [member]
Disclosure of geographical areas [line items]
Sales revenue	561,856	652,335	680,497
Geographical consolidation [member] | Europe [member] | Inter-geographic area [member]
Disclosure of geographical areas [line items]
Sales revenue	210,713	275,089	236,717
Geographical consolidation [member] | Asia [member]
Disclosure of geographical areas [line items]
Sales revenue	3,859,701	4,272,239	4,221,020
Operating profit (loss)	319,565	404,220	402,620
Assets	2,851,027	3,024,357	2,942,053
Non-current assets other than financial instruments, deferred tax assets and net defined benefit assets	658,397	691,211	683,006
Geographical consolidation [member] | Asia [member] | External customers [member]
Disclosure of geographical areas [line items]
Sales revenue	3,207,470	3,557,338	3,541,680
Geographical consolidation [member] | Asia [member] | Inter-geographic area [member]
Disclosure of geographical areas [line items]
Sales revenue	652,231	714,901	679,340
Geographical consolidation [member] | Other regions [member]
Disclosure of geographical areas [line items]
Sales revenue	693,640	764,453	837,524
Operating profit (loss)	37,289	22,616	43,831
Assets	518,445	621,259	659,781
Non-current assets other than financial instruments, deferred tax assets and net defined benefit assets	109,046	144,716	161,913
Geographical consolidation [member] | Other regions [member] | External customers [member]
Disclosure of geographical areas [line items]
Sales revenue	686,815	757,627	831,481
Geographical consolidation [member] | Other regions [member] | Inter-geographic area [member]
Disclosure of geographical areas [line items]
Sales revenue	6,825	6,826	6,043
Reconciling items [member]
Disclosure of geographical areas [line items]
Sales revenue	(3,374,654)	(3,947,776)	(3,679,901)
Operating profit (loss)	(15,366)	6,394	5,878
Assets	137,114	114,066	(36,429)
Non-current assets other than financial instruments, deferred tax assets and net defined benefit assets	0
Reconciling items [member] | External customers [member]
Disclosure of geographical areas [line items]
Sales revenue	0
Reconciling items [member] | Inter-geographic area [member]
Disclosure of geographical areas [line items]
Sales revenue	¥ (3,374,654)	¥ (3,947,776)	¥ (3,679,901)

Segment Information - Supplem_2

Segment Information - Supplemental Geographical Information Based on Location (Parenthetical) (Detail) - JPY (¥) ¥ in Millions	Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2018
Disclosure of geographical areas [line items]
Assets	¥ 20,461,465	¥ 20,419,122	¥ 19,349,164
Unallocated corporate assets [member]
Disclosure of geographical areas [line items]
Assets	¥ 787,022	¥ 682,842	¥ 519,780

Cash and Cash Equivalents - Sum

Cash and Cash Equivalents - Summary of Cash and Cash Equivalents (Detail) - JPY (¥) ¥ in Millions	Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2018	Mar. 31, 2017
Cash and cash equivalents [abstract]
Cash and deposits	¥ 2,017,247	¥ 1,815,920
Cash equivalents	655,106	678,201
Total	¥ 2,672,353	¥ 2,494,121	¥ 2,256,488	¥ 2,105,976

Trade Receivables - Summary of

Trade Receivables - Summary of Trade Receivables (Detail) - JPY (¥) ¥ in Millions	Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2018	Mar. 31, 2017
Disclosure of financial assets [line items]
Trade receivables	¥ 633,909	¥ 793,245
Trade receivables [member]
Disclosure of financial assets [line items]
Allowance for impairment losses	(11,302)	(12,555)	¥ (14,389)	¥ (14,510)
Gross carrying amount [member] | Trade accounts and notes receivable [member]
Disclosure of financial assets [line items]
Trade receivables	526,403	712,180
Gross carrying amount [member] | Other [member]
Disclosure of financial assets [line items]
Trade receivables	¥ 118,808	¥ 93,620

Trade Receivables - Changes in

Trade Receivables - Changes in Allowance for Impairment Losses on Trade Receivables (Detail) - Trade receivables [member] - JPY (¥) ¥ in Millions	12 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2018
Disclosure of financial assets [line items]
Balance at beginning of year	¥ 12,555	¥ 14,389	¥ 14,510
Remeasurement	589	251	858
Write-offs	(971)	(1,590)	(706)
Exchange differences on translating foreign operations	(871)	(495)	(273)
Balance at end of year	¥ 11,302	¥ 12,555	¥ 14,389

Receivables from Financial Se_3

Receivables from Financial Services - Summary of Receivables from Financial Services (Detail) - JPY (¥) ¥ in Millions		Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2018	Mar. 31, 2017
Disclosure of financial assets [line items]
Receivables from financial services		¥ 5,161,165	¥ 5,405,250
Allowance for losses on lease residual values			(29)
Unearned interest income and fees		(8,681)	(9,435)
Current assets		1,878,358	1,951,633
Non-current assets		3,282,807	3,453,617
Receivables from financial services		5,161,165	5,405,250
Retail [member]
Disclosure of financial assets [line items]
Receivables from financial services	[1]	4,440,364	4,602,848
Allowance for credit losses		(60,241)	(39,760)	¥ (36,675)	¥ (28,867)
Receivables from financial services	[1]	4,440,364	4,602,848
Finance lease [member]
Disclosure of financial assets [line items]
Allowance for credit losses		(690)	(730)	(821)	(809)
Wholesale [member]
Disclosure of financial assets [line items]
Receivables from financial services		666,992	712,214
Allowance for credit losses		(2,537)	(2,713)	¥ (1,906)	¥ (1,823)
Receivables from financial services		666,992	712,214
Gross carrying amount [member]
Disclosure of financial assets [line items]
Receivables from financial services		5,233,314	5,457,917
Receivables from financial services		5,233,314	5,457,917
Gross carrying amount [member] | Retail [member]
Disclosure of financial assets [line items]
Receivables from financial services		4,440,364	4,602,848
Receivables from financial services		4,440,364	4,602,848
Gross carrying amount [member] | Finance lease [member]
Disclosure of financial assets [line items]
Receivables from financial services		125,958	142,855
Receivables from financial services		125,958	142,855
Gross carrying amount [member] | Wholesale [member]
Disclosure of financial assets [line items]
Receivables from financial services		666,992	712,214
Receivables from financial services		666,992	712,214
Financial Services receivables [member]
Disclosure of financial assets [line items]
Allowance for credit losses		¥ (63,468)	¥ (43,203)
[1]	The tables above represent the gross amounts of retail receivables by stages of ECL model since the expected credit losses are measured collectively by our finance subsidiaries and the balances of those receivables are not directly allocated to the risk ratings.

Receivables from Financial Se_4

Receivables from Financial Services - Gross Investment in Lease and Present Value of Minimum Lease Payments Receivable (Detail) - JPY (¥) ¥ in Millions	Mar. 31, 2020	Mar. 31, 2019
Disclosure of maturity analysis of finance lease payments receivable [line items]
Gross investment in the lease		¥ 142,855
Unearned interest income and fees	¥ (8,681)	(9,435)
Unguaranteed residual values	57,079	(72,031)
Present value of minimum lease payments receivable		61,389
Undiscounted lease payments receivable	64,289
Unearned finance income	(4,091)
Net investment in the lease	117,277
Within 1 year [member]
Disclosure of maturity analysis of finance lease payments receivable [line items]
Gross investment in the lease		52,099
Unearned interest income and fees		(1,632)
Unguaranteed residual values		(25,369)
Present value of minimum lease payments receivable		25,098
Undiscounted lease payments receivable	22,808
Between 1 and 5 years [member]
Disclosure of maturity analysis of finance lease payments receivable [line items]
Gross investment in the lease		90,658
Unearned interest income and fees		(7,790)
Unguaranteed residual values		(46,662)
Present value of minimum lease payments receivable		36,206
Between 1 and 2 years [member]
Disclosure of maturity analysis of finance lease payments receivable [line items]
Undiscounted lease payments receivable	20,578
Between 2 and 3 years [member]
Disclosure of maturity analysis of finance lease payments receivable [line items]
Undiscounted lease payments receivable	13,370
Between 3 and 4 years [member]
Disclosure of maturity analysis of finance lease payments receivable [line items]
Undiscounted lease payments receivable	6,097
Between 4 and 5 years [member]
Disclosure of maturity analysis of finance lease payments receivable [line items]
Undiscounted lease payments receivable	1,359
Later than 5 years [member]
Disclosure of maturity analysis of finance lease payments receivable [line items]
Gross investment in the lease		98
Unearned interest income and fees		(13)
Unguaranteed residual values
Present value of minimum lease payments receivable		¥ 85
Undiscounted lease payments receivable	¥ 77

Receivables from Financial Se_5

Receivables from Financial Services - Changes in Allowance for Credit Losses on Receivables from Financial Services (Detail) - JPY (¥) ¥ in Millions	12 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2018
Retail [member]
Disclosure of financial assets [line items]
Balance at beginning of year	¥ 39,760	¥ 36,675	¥ 28,867
Provision			36,037
Remeasurement	54,833	33,873
Write-offs	(31,436)	(30,986)	(39,478)
Recoveries			8,368
Exchange differences on translating foreign operations	(2,916)	198	(1,718)
Balance at end of year	60,241	39,760	36,675
Finance lease [member]
Disclosure of financial assets [line items]
Balance at beginning of year	730	821	809
Provision			214
Remeasurement	142	92
Write-offs	(130)	(125)	(299)
Recoveries			50
Exchange differences on translating foreign operations	(52)	(58)	47
Balance at end of year	690	730	821
Wholesale [member]
Disclosure of financial assets [line items]
Balance at beginning of year	2,713	1,906	1,823
Provision			336
Remeasurement	1,905	755
Write-offs	(1,784)	153	(271)
Recoveries			13
Exchange differences on translating foreign operations	(297)	(101)	5
Balance at end of year	2,537	2,713	1,906
Financial Services receivables [member]
Disclosure of financial assets [line items]
Balance at beginning of year	43,203	39,402	31,499
Provision			36,587
Remeasurement	56,880	34,720
Write-offs	(33,350)	(30,958)	(40,048)
Recoveries			8,431
Exchange differences on translating foreign operations	(3,265)	39	(1,666)
Balance at end of year	63,468	43,203	39,402
Previously stated [member] | Retail [member]
Disclosure of financial assets [line items]
Balance at beginning of year		32,076
Balance at end of year			32,076
Previously stated [member] | Finance lease [member]
Disclosure of financial assets [line items]
Balance at beginning of year		821
Balance at end of year			821
Previously stated [member] | Wholesale [member]
Disclosure of financial assets [line items]
Balance at beginning of year		1,906
Balance at end of year			1,906
Previously stated [member] | Financial Services receivables [member]
Disclosure of financial assets [line items]
Balance at beginning of year		34,803
Balance at end of year			34,803
Effect of changes in accounting policy [member] | Retail [member]
Disclosure of financial assets [line items]
Balance at beginning of year		4,599
Balance at end of year			4,599
Effect of changes in accounting policy [member] | Finance lease [member]
Disclosure of financial assets [line items]
Balance at beginning of year
Balance at end of year
Effect of changes in accounting policy [member] | Wholesale [member]
Disclosure of financial assets [line items]
Balance at beginning of year
Balance at end of year
Effect of changes in accounting policy [member] | Financial Services receivables [member]
Disclosure of financial assets [line items]
Balance at beginning of year		4,599
Balance at end of year			4,599
12-month expected credit losses [member] | Retail [member]
Disclosure of financial assets [line items]
Balance at beginning of year	22,612	20,574
Remeasurement	5,547	1,788
Write-offs
Exchange differences on translating foreign operations	(1,504)	250
Balance at end of year	26,655	22,612	20,574
12-month expected credit losses [member] | Finance lease [member]
Disclosure of financial assets [line items]
Balance at beginning of year	534	604
Remeasurement	(15)	(19)
Write-offs
Exchange differences on translating foreign operations	(38)	(51)
Balance at end of year	481	534	604
12-month expected credit losses [member] | Wholesale [member]
Disclosure of financial assets [line items]
Balance at beginning of year	1,419	1,553
Remeasurement	127	(49)
Write-offs
Exchange differences on translating foreign operations	(109)	(85)
Balance at end of year	1,437	1,419	1,553
12-month expected credit losses [member] | Financial Services receivables [member]
Disclosure of financial assets [line items]
Balance at beginning of year	24,565	22,731
Remeasurement	5,659	1,720
Write-offs
Exchange differences on translating foreign operations	(1,651)	114
Balance at end of year	28,573	24,565	22,731
Lifetime expected credit losses [member] | Not credit impaired [member] | Retail [member]
Disclosure of financial assets [line items]
Balance at beginning of year	10,407	9,543
Remeasurement	16,637	579
Write-offs
Exchange differences on translating foreign operations	(412)	285
Balance at end of year	26,632	10,407	9,543
Lifetime expected credit losses [member] | Not credit impaired [member] | Finance lease [member]
Disclosure of financial assets [line items]
Balance at beginning of year	72	78
Remeasurement	29	(3)
Write-offs
Exchange differences on translating foreign operations	(5)	(3)
Balance at end of year	96	72	78
Lifetime expected credit losses [member] | Not credit impaired [member] | Wholesale [member]
Disclosure of financial assets [line items]
Balance at beginning of year	329	309
Remeasurement	2	35
Write-offs
Exchange differences on translating foreign operations	(13)	(15)
Balance at end of year	318	329	309
Lifetime expected credit losses [member] | Not credit impaired [member] | Financial Services receivables [member]
Disclosure of financial assets [line items]
Balance at beginning of year	10,808	9,930
Remeasurement	16,668	611
Write-offs
Exchange differences on translating foreign operations	(430)	267
Balance at end of year	27,046	10,808	9,930
Lifetime expected credit losses [member] | Credit impaired [member] | Retail [member]
Disclosure of financial assets [line items]
Balance at beginning of year	6,741	6,558
Remeasurement	32,649	31,506
Write-offs	(31,436)	(30,986)
Exchange differences on translating foreign operations	(1,000)	(337)
Balance at end of year	6,954	6,741	6,558
Lifetime expected credit losses [member] | Credit impaired [member] | Finance lease [member]
Disclosure of financial assets [line items]
Balance at beginning of year	124	139
Remeasurement	128	114
Write-offs	(130)	(125)
Exchange differences on translating foreign operations	(9)	(4)
Balance at end of year	113	124	139
Lifetime expected credit losses [member] | Credit impaired [member] | Wholesale [member]
Disclosure of financial assets [line items]
Balance at beginning of year	965	44
Remeasurement	1,776	769
Write-offs	(1,784)	153
Exchange differences on translating foreign operations	(175)	(1)
Balance at end of year	782	965	44
Lifetime expected credit losses [member] | Credit impaired [member] | Financial Services receivables [member]
Disclosure of financial assets [line items]
Balance at beginning of year	7,830	6,741
Remeasurement	34,553	32,389
Write-offs	(33,350)	(30,958)
Exchange differences on translating foreign operations	(1,184)	(342)
Balance at end of year	¥ 7,849	¥ 7,830	¥ 6,741

Other Financial Assets - Summar

Other Financial Assets - Summary of Other Financial Assets (Detail) - JPY (¥) ¥ in Millions	Mar. 31, 2020	Mar. 31, 2019
Disclosure of financial assets [line items]
Other financial assets	¥ 631,777	¥ 580,423
Current assets	190,053	163,274
Non-current assets	441,724	417,149
Financial assets measured at amortized cost [member] | Receivables other than trade receivables and receivables from financial services [member]
Disclosure of financial assets [line items]
Other financial assets	144,554	118,256
Financial assets measured at amortized cost [member] | Debt securities [member]
Disclosure of financial assets [line items]
Other financial assets	62,204	54,964
Financial assets measured at amortized cost [member] | Guaranty deposits [member]
Disclosure of financial assets [line items]
Other financial assets	12,266	13,098
Financial assets measured at amortized cost [member] | Restricted cash [member]
Disclosure of financial assets [line items]
Other financial assets	64,152	66,555
Financial assets measured at amortized cost [member] | Other financial assets [member]
Disclosure of financial assets [line items]
Other financial assets	10,743	9,776
Financial assets measured at amortized cost [member] | Allowance for impairment losses [member]
Disclosure of financial assets [line items]
Other financial assets	(3,364)	(4,233)
Financial assets measured at fair value through other comprehensive income [member] | Debt securities [member]
Disclosure of financial assets [line items]
Other financial assets	9,069	10,495
Financial assets measured at fair value through other comprehensive income [member] | Equity securities [member]
Disclosure of financial assets [line items]
Other financial assets	178,001	207,035
Financial assets measured at fair value through profit or loss [member] | Derivatives [member]
Disclosure of financial assets [line items]
Other financial assets	95,804	46,397
Financial assets measured at fair value through profit or loss [member] | Debt securities [member]
Disclosure of financial assets [line items]
Other financial assets	¥ 58,348	¥ 58,080

Other Financial Assets - Summ_2

Other Financial Assets - Summary of Changes in Allowance for Impairment Losses (Detail) - Other financial assets [member] - JPY (¥) ¥ in Millions	12 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2018
Disclosure of Doubtful Accounts for Other Financial Assets [line items]
Balance at beginning of year	¥ 4,233	¥ 10,145	¥ 10,964
Remeasurement	600	284	343
Write-offs	(1,463)	(6,194)	(1,179)
Exchange differences on translating foreign operations	(6)	(2)	17
Balance at end of year	¥ 3,364	¥ 4,233	¥ 10,145

Other Financial Assets - Major

Other Financial Assets - Major Securities Included in Equity Securities Designated as Financial Assets Measured at Fair Value Through Other Comprehensive Income (Detail) - JPY (¥) ¥ in Millions	Mar. 31, 2020	Mar. 31, 2019
GM Cruise Holdings LLC [member]
Disclosure of Doubtful Accounts for Other Financial Assets [line items]
Financial assets measured at fair value through other comprehensive income	¥ 85,649	¥ 83,242
Stanley Electric Co., Ltd. [member]
Disclosure of Doubtful Accounts for Other Financial Assets [line items]
Financial assets measured at fair value through other comprehensive income	19,690	27,475
Mitsubishi UFJ Financial Group, Inc. [member]
Disclosure of Doubtful Accounts for Other Financial Assets [line items]
Financial assets measured at fair value through other comprehensive income	5,844	7,976
NIPPON SEIKI CO., LTD. [member]
Disclosure of Doubtful Accounts for Other Financial Assets [line items]
Financial assets measured at fair value through other comprehensive income		6,714
NIKKON Holdings Co., Ltd. [member]
Disclosure of Doubtful Accounts for Other Financial Assets [line items]
Financial assets measured at fair value through other comprehensive income	5,184	6,414
Tokio Marine Holdings, Inc. [member]
Disclosure of Doubtful Accounts for Other Financial Assets [line items]
Financial assets measured at fair value through other comprehensive income	5,409	¥ 5,859
Daido Steel Co., Ltd. [member]
Disclosure of Doubtful Accounts for Other Financial Assets [line items]
Financial assets measured at fair value through other comprehensive income	¥ 4,542

Other Financial Assets - Summ_3

Other Financial Assets - Summary of Fair Values at Date of Derecognition and Cumulative Net Gains or Losses Recognized in Other Comprehensive Income in Equity (Detail) - JPY (¥) ¥ in Millions	12 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2018
Disclosure of financial assets [abstract]
Fair value	¥ 33	¥ 61,038	¥ 431
Cumulative net gain or loss	¥ (23)	¥ 39,382	¥ 302

Inventories - Summary of Invent

Inventories - Summary of Inventories (Detail) - JPY (¥) ¥ in Millions	Mar. 31, 2020	Mar. 31, 2019
Classes of current inventories [abstract]
Finished goods	¥ 909,076	¥ 973,797
Work in process	76,264	78,006
Raw materials	575,228	534,984
Total	¥ 1,560,568	¥ 1,586,787

Inventories - Additional Inform

Inventories - Additional Information (Detail) - JPY (¥) ¥ in Millions	12 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2018
Classes of current inventories [abstract]
Write-down of inventories recognized as an expense	¥ 37,752	¥ 32,565	¥ 67,768

Investments Accounted for Usi_3

Investments Accounted for Using the Equity Method - Equity in Affiliates and Joint Ventures (Detail) - JPY (¥) ¥ in Millions	Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2018
Investments accounted for using equity method [abstract]
Investments accounted for using the equity method, Affiliates	¥ 378,012	¥ 382,706
Investments accounted for using the equity method, Joint ventures	277,463	330,333
Investments accounted for using the equity method, Total	655,475	713,039	¥ 679,517
Honda's equity of undistributed earnings, Affiliates	293,489	294,532
Honda's equity of undistributed earnings, Joint ventures	222,061	249,284
Honda's equity of undistributed earnings, Total	¥ 515,550	¥ 543,816

Investments Accounted for Usi_4

Investments Accounted for Using the Equity Method - Additional Information (Detail) - JPY (¥) ¥ in Millions	12 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2018
Disclosure of investments accounted for using equity method [line items]
Proportion of ownership interest in joint venture	50.00%
Investments accounted for using equity method [member]
Disclosure of investments accounted for using equity method [line items]
Reversal of impairment losses	¥ 0	¥ 0	¥ 15,782

Investments Accounted for Usi_5

Investments Accounted for Using the Equity Method - Share of Comprehensive Income of Affiliates and Joint Ventures (Detail) - JPY (¥) ¥ in Millions	12 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2018
Disclosure of investments accounted for using equity method [line items]
Profit for the year	¥ 164,203	¥ 228,827	¥ 247,643
Other comprehensive income	(31,943)	(21,684)	12,308
Comprehensive income for the year	132,260	207,143	259,951
Affiliates [member]
Disclosure of investments accounted for using equity method [line items]
Profit for the year	(434)	43,137	45,501
Other comprehensive income	(5,758)	(13,150)	4,983
Comprehensive income for the year	(6,192)	29,987	50,484
Joint ventures [member]
Disclosure of investments accounted for using equity method [line items]
Profit for the year	164,637	185,690	202,142
Other comprehensive income	(26,185)	(8,534)	7,325
Comprehensive income for the year	¥ 138,452	¥ 177,156	¥ 209,467

Investments Accounted for Usi_6

Investments Accounted for Using the Equity Method - Summarized Financial Information (Detail) - JPY (¥) ¥ in Millions	12 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2018	Mar. 31, 2017
Disclosure of investments accounted for using equity method [line items]
Current assets	¥ 7,301,010	¥ 7,347,294
Non-current assets	13,160,455	13,071,828
Total assets	20,461,465	20,419,122	¥ 19,349,164
Current liabilities	5,790,088	5,981,124
Non-current liabilities	6,385,354	5,872,208
Total liabilities	12,175,442	11,853,332
Total equity	8,286,023	8,565,790		¥ 7,569,626
Cash and cash equivalents included in current assets	2,672,353	2,494,121	2,256,488	¥ 2,105,976
Sales revenue	14,931,009	15,888,617	15,361,146
Depreciation and amortization	1,461,403	1,468,685	1,454,116
Income tax expense	279,986	303,089	(13,666)
Profit for the year	509,932	676,286	1,128,639
Other comprehensive income	(451,209)	26,321	(159,244)
Comprehensive income for the year	58,723	702,607	969,395
Honda's share of comprehensive income for the year	132,260	207,143	259,951
Dongfeng Honda Automobile Co Ltd [member]
Disclosure of investments accounted for using equity method [line items]
Current assets	347,462	513,364
Non-current assets	196,439	195,806
Total assets	543,901	709,170
Current liabilities	316,519	369,119
Non-current liabilities	28,229	42,264
Total liabilities	344,748	411,383
Total equity	199,153	297,787
Carrying amount of its interest in the joint venture	98,373	147,583
Cash and cash equivalents included in current assets	246,736	201,698
Financial liabilities (excluding trade payables and provisions) included in current liabilities	67,414	4,628
Sales revenue	1,516,160	1,696,651	1,695,603
Interest income	8,019	6,190	8,998
Depreciation and amortization	18,870	16,091	16,001
Income tax expense	48,622	58,504	60,295
Profit for the year	130,327	176,787	185,604
Other comprehensive income	(21,100)	(8,354)	11,586
Comprehensive income for the year	109,227	168,433	197,190
Honda's share of comprehensive income for the year	54,667	84,273	99,437
Dividend from the joint venture to Honda	72,760	70,788	75,407
Dongfeng Honda Automobile Co Ltd [member] | Equity attributable to owners of the parent [Member]
Disclosure of investments accounted for using equity method [line items]
Total equity	99,577	148,893
Comprehensive income for the year	54,614	84,217	98,595
Dongfeng Honda Automobile Co Ltd [member] | Equity Method Adjustments [member]
Disclosure of investments accounted for using equity method [line items]
Total equity	(1,204)	(1,310)
Comprehensive income for the year	¥ 53	¥ 56	¥ 842

Investments Accounted for Usi_7

Investments Accounted for Using the Equity Method - Combined Financial Information of Affiliates and Joint Ventures (Detail) - JPY (¥) ¥ in Millions	12 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2018	Mar. 31, 2017
Disclosure of investments accounted for using equity method [line items]
Current assets	¥ 7,301,010	¥ 7,347,294
Non-current assets	13,160,455	13,071,828
Total assets	20,461,465	20,419,122	¥ 19,349,164
Current liabilities	5,790,088	5,981,124
Non-current liabilities	6,385,354	5,872,208
Total liabilities	12,175,442	11,853,332
Total equity	8,286,023	8,565,790		¥ 7,569,626
Sales revenue	14,931,009	15,888,617	15,361,146
Profit for the year	509,932	676,286	1,128,639
Affiliates [member]
Disclosure of investments accounted for using equity method [line items]
Current assets	1,206,002	1,205,736
Non-current assets	1,133,425	1,123,372
Total assets	2,339,427	2,329,108
Current liabilities	611,551	621,552
Non-current liabilities	229,485	221,781
Total liabilities	841,036	843,333
Total equity	1,498,391	1,485,775
Sales revenue	2,673,718	2,834,777	2,764,386
Profit for the year	78,347	153,253	111,235
Affiliates [member] | Motorcycle business [member]
Disclosure of investments accounted for using equity method [line items]
Current assets	49,706	53,449
Non-current assets	28,071	31,464
Total assets	77,777	84,913
Current liabilities	21,337	24,307
Non-current liabilities	3,844	4,414
Total liabilities	25,181	28,721
Total equity	52,596	56,192
Sales revenue	160,557	170,750	168,229
Profit for the year	8,094	8,654	11,115
Affiliates [member] | Automobile business [member]
Disclosure of investments accounted for using equity method [line items]
Current assets	1,146,286	1,143,390
Non-current assets	1,083,789	1,069,087
Total assets	2,230,075	2,212,477
Current liabilities	587,533	594,494
Non-current liabilities	224,505	216,199
Total liabilities	812,038	810,693
Total equity	1,418,037	1,401,784
Sales revenue	2,505,819	2,657,023	2,589,380
Profit for the year	69,339	143,833	99,119
Affiliates [member] | Life creation and other businesses [member]
Disclosure of investments accounted for using equity method [line items]
Current assets	10,010	8,897
Non-current assets	21,565	22,821
Total assets	31,575	31,718
Current liabilities	2,681	2,751
Non-current liabilities	1,136	1,168
Total liabilities	3,817	3,919
Total equity	27,758	27,799
Sales revenue	7,342	7,004	6,777
Profit for the year	914	766	1,001
Joint ventures [member]
Disclosure of investments accounted for using equity method [line items]
Current assets	1,072,520	1,393,450
Non-current assets	488,041	497,451
Total assets	1,560,561	1,890,901
Current liabilities	949,597	1,123,061
Non-current liabilities	61,189	93,031
Total liabilities	1,010,786	1,216,092
Total equity	549,775	674,809
Sales revenue	4,280,687	4,572,205	4,542,303
Profit for the year	328,603	371,154	404,731
Joint ventures [member] | Motorcycle business [member]
Disclosure of investments accounted for using equity method [line items]
Current assets	201,170	210,818
Non-current assets	114,106	119,749
Total assets	315,276	330,567
Current liabilities	181,772	192,951
Non-current liabilities	11,483	10,842
Total liabilities	193,255	203,793
Total equity	122,021	126,774
Sales revenue	791,250	746,385	701,676
Profit for the year	63,819	54,230	56,733
Joint ventures [member] | Automobile business [member]
Disclosure of investments accounted for using equity method [line items]
Current assets	867,758	1,179,520
Non-current assets	373,274	377,019
Total assets	1,241,032	1,556,539
Current liabilities	766,635	929,071
Non-current liabilities	49,058	81,316
Total liabilities	815,693	1,010,387
Total equity	425,339	546,152
Sales revenue	3,483,024	3,819,913	3,835,476
Profit for the year	264,216	316,491	347,661
Joint ventures [member] | Life creation and other businesses [member]
Disclosure of investments accounted for using equity method [line items]
Current assets	3,592	3,112
Non-current assets	661	683
Total assets	4,253	3,795
Current liabilities	1,190	1,039
Non-current liabilities	648	873
Total liabilities	1,838	1,912
Total equity	2,415	1,883
Sales revenue	6,413	5,907	5,151
Profit for the year	¥ 568	¥ 433	¥ 337

Equipment on Operating Leases -

Equipment on Operating Leases - Changes in Cost, Accumulated Depreciation and Impairment Losses, and the Carrying Amounts of Equipment on Operating Leases (Detail) - Equipment on operating leases [member] - JPY (¥) ¥ in Millions	12 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Disclosure of detailed information about property, plant and equipment [line items]
Beginning balance	¥ 4,448,849
Ending balance	4,626,063	¥ 4,448,849
Gross carrying amount [member]
Disclosure of detailed information about property, plant and equipment [line items]
Beginning balance	5,700,511	5,218,446
Additions	2,244,893	2,038,734
Sales or disposal	(1,914,083)	(1,721,471)
Exchange differences on translating foreign operations	(127,747)	164,802
Other
Ending balance	5,903,574	5,700,511
Accumulated depreciation, amortization and impairment losses [member]
Disclosure of detailed information about property, plant and equipment [line items]
Beginning balance	(1,251,662)	(1,130,313)
Depreciation	(819,705)	(781,082)
Sales or disposal	801,133	704,691
Exchange differences on translating foreign operations	28,760	(32,242)
Other	(36,037)	(12,716)
Ending balance	¥ (1,277,511)	¥ (1,251,662)

Equipment on Operating Leases_2

Equipment on Operating Leases - Future Minimum Lease Payments Expected to be Received under Non-cancellable Operating Leases to be Received (Detail) - Equipment on operating leases [member] - JPY (¥) ¥ in Millions	Mar. 31, 2020	Mar. 31, 2019
Disclosure of maturity analysis of finance lease payments receivable [line items]
Future minimum lease payments expected to be received under non-cancelable operating leases	¥ 1,754,867	¥ 1,634,439
Within 1 year [member]
Disclosure of maturity analysis of finance lease payments receivable [line items]
Future minimum lease payments expected to be received under non-cancelable operating leases	784,148	736,650
Between 1 and 2 years [member]
Disclosure of maturity analysis of finance lease payments receivable [line items]
Future minimum lease payments expected to be received under non-cancelable operating leases	577,856
Between 1 and 5 years [member]
Disclosure of maturity analysis of finance lease payments receivable [line items]
Future minimum lease payments expected to be received under non-cancelable operating leases		897,789
Between 2 and 3 years [member]
Disclosure of maturity analysis of finance lease payments receivable [line items]
Future minimum lease payments expected to be received under non-cancelable operating leases	274,122
Between 3 and 4 years [member]
Disclosure of maturity analysis of finance lease payments receivable [line items]
Future minimum lease payments expected to be received under non-cancelable operating leases	91,320
Between 4 and 5 years [member]
Disclosure of maturity analysis of finance lease payments receivable [line items]
Future minimum lease payments expected to be received under non-cancelable operating leases	27,421
Later than 5 years [member]
Disclosure of maturity analysis of finance lease payments receivable [line items]
Future minimum lease payments expected to be received under non-cancelable operating leases

Equipment on Operating Leases_3

Equipment on Operating Leases - Additional Information (Detail) ¥ in Millions	12 Months Ended
	Mar. 31, 2020JPY (¥)
Operating Lease Income [Abstract]
Operating lease income	¥ 1,062,879

Property Plant and Equipment -

Property Plant and Equipment - Changes in Cost, Accumulated Depreciation and Impairment Losses, and the Carrying Amounts of Property, Plant and Equipment (Detail) - Property, plant and equipment [member] - JPY (¥) ¥ in Millions	12 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Disclosure of detailed information about property, plant and equipment [line items]
Beginning balance	¥ 2,981,840
Ending balance	3,051,704	¥ 2,981,840
Gross carrying amount [member]
Disclosure of detailed information about property, plant and equipment [line items]
Beginning balance	8,603,358	8,367,049
Additions	455,169	466,657
Reclassification
Sales or disposal	(257,815)	(307,662)
Exchange differences on translating foreign operations	(269,640)	82,783
Other	(41,459)	(5,469)
Ending balance	8,747,967	8,603,358
Gross carrying amount [member] | Effect of adopting IFRS 16 [member]
Disclosure of detailed information about property, plant and equipment [line items]
Beginning balance	258,354
Ending balance		258,354
Gross carrying amount [member] | After adjustment of IFRS 16 [member]
Disclosure of detailed information about property, plant and equipment [line items]
Beginning balance	8,861,712
Ending balance		8,861,712
Accumulated depreciation, amortization and impairment losses [member]
Disclosure of detailed information about property, plant and equipment [line items]
Beginning balance	(5,621,518)	(5,304,616)
Depreciation	(470,320)	(499,036)
Impairment losses		(27,048)
Sales or disposal	211,981	264,489
Exchange differences on translating foreign operations	172,651	(60,328)
Other	10,943	5,021
Ending balance	(5,696,263)	(5,621,518)
Accumulated depreciation, amortization and impairment losses [member] | Effect of adopting IFRS 16 [member]
Disclosure of detailed information about property, plant and equipment [line items]
Beginning balance	0
Ending balance		0
Accumulated depreciation, amortization and impairment losses [member] | After adjustment of IFRS 16 [member]
Disclosure of detailed information about property, plant and equipment [line items]
Beginning balance	(5,621,518)
Ending balance		(5,621,518)
Land [member]
Disclosure of detailed information about property, plant and equipment [line items]
Beginning balance	542,319
Ending balance	605,170	542,319
Land [member] | Gross carrying amount [member]
Disclosure of detailed information about property, plant and equipment [line items]
Beginning balance	546,883	545,192
Additions	7,519	304
Reclassification	87	2,421
Sales or disposal	(6,896)	(1,469)
Exchange differences on translating foreign operations	(7,860)	307
Other	(820)	128
Ending balance	615,687	546,883
Land [member] | Gross carrying amount [member] | Effect of adopting IFRS 16 [member]
Disclosure of detailed information about property, plant and equipment [line items]
Beginning balance	76,774
Ending balance		76,774
Land [member] | Gross carrying amount [member] | After adjustment of IFRS 16 [member]
Disclosure of detailed information about property, plant and equipment [line items]
Beginning balance	623,657
Ending balance		623,657
Land [member] | Accumulated depreciation, amortization and impairment losses [member]
Disclosure of detailed information about property, plant and equipment [line items]
Beginning balance	(4,564)	(4,179)
Depreciation	(6,218)
Impairment losses		(1,052)
Sales or disposal	860	22
Exchange differences on translating foreign operations	156	9
Other	(751)	636
Ending balance	(10,517)	(4,564)
Land [member] | Accumulated depreciation, amortization and impairment losses [member] | Effect of adopting IFRS 16 [member]
Disclosure of detailed information about property, plant and equipment [line items]
Beginning balance	0
Ending balance		0
Land [member] | Accumulated depreciation, amortization and impairment losses [member] | After adjustment of IFRS 16 [member]
Disclosure of detailed information about property, plant and equipment [line items]
Beginning balance	(4,564)
Ending balance		(4,564)
Buildings and structures [member]
Disclosure of detailed information about property, plant and equipment [line items]
Beginning balance	977,141
Ending balance	1,073,212	977,141
Buildings and structures [member] | Gross carrying amount [member]
Disclosure of detailed information about property, plant and equipment [line items]
Beginning balance	2,327,523	2,248,793
Additions	28,933	10,399
Reclassification	59,861	64,101
Sales or disposal	(19,531)	(11,432)
Exchange differences on translating foreign operations	(59,431)	15,931
Other	(9,075)	(269)
Ending balance	2,468,194	2,327,523
Buildings and structures [member] | Gross carrying amount [member] | Effect of adopting IFRS 16 [member]
Disclosure of detailed information about property, plant and equipment [line items]
Beginning balance	139,914
Ending balance		139,914
Buildings and structures [member] | Gross carrying amount [member] | After adjustment of IFRS 16 [member]
Disclosure of detailed information about property, plant and equipment [line items]
Beginning balance	2,467,437
Ending balance		2,467,437
Buildings and structures [member] | Accumulated depreciation, amortization and impairment losses [member]
Disclosure of detailed information about property, plant and equipment [line items]
Beginning balance	(1,350,382)	(1,270,762)
Depreciation	(88,565)	(74,391)
Impairment losses		(6,077)
Sales or disposal	12,673	9,665
Exchange differences on translating foreign operations	28,116	(9,266)
Other	3,176	449
Ending balance	(1,394,982)	(1,350,382)
Buildings and structures [member] | Accumulated depreciation, amortization and impairment losses [member] | Effect of adopting IFRS 16 [member]
Disclosure of detailed information about property, plant and equipment [line items]
Beginning balance	0
Ending balance		0
Buildings and structures [member] | Accumulated depreciation, amortization and impairment losses [member] | After adjustment of IFRS 16 [member]
Disclosure of detailed information about property, plant and equipment [line items]
Beginning balance	(1,350,382)
Ending balance		(1,350,382)
Machinery and equipment [member]
Disclosure of detailed information about property, plant and equipment [line items]
Beginning balance	1,252,548
Ending balance	1,152,884	1,252,548
Machinery and equipment [member] | Gross carrying amount [member]
Disclosure of detailed information about property, plant and equipment [line items]
Beginning balance	5,514,983	5,380,505
Additions	125,151	174,686
Reclassification	215,358	194,365
Sales or disposal	(231,388)	(294,761)
Exchange differences on translating foreign operations	(192,632)	63,898
Other	(31,325)	(3,710)
Ending balance	5,441,813	5,514,983
Machinery and equipment [member] | Gross carrying amount [member] | Effect of adopting IFRS 16 [member]
Disclosure of detailed information about property, plant and equipment [line items]
Beginning balance	41,666
Ending balance		41,666
Machinery and equipment [member] | Gross carrying amount [member] | After adjustment of IFRS 16 [member]
Disclosure of detailed information about property, plant and equipment [line items]
Beginning balance	5,556,649
Ending balance		5,556,649
Machinery and equipment [member] | Accumulated depreciation, amortization and impairment losses [member]
Disclosure of detailed information about property, plant and equipment [line items]
Beginning balance	(4,262,435)	(4,027,490)
Depreciation	(375,537)	(424,645)
Impairment losses		(17,944)
Sales or disposal	198,448	254,802
Exchange differences on translating foreign operations	144,226	(51,094)
Other	6,369	3,936
Ending balance	(4,288,929)	(4,262,435)
Machinery and equipment [member] | Accumulated depreciation, amortization and impairment losses [member] | Effect of adopting IFRS 16 [member]
Disclosure of detailed information about property, plant and equipment [line items]
Beginning balance	0
Ending balance		0
Machinery and equipment [member] | Accumulated depreciation, amortization and impairment losses [member] | After adjustment of IFRS 16 [member]
Disclosure of detailed information about property, plant and equipment [line items]
Beginning balance	(4,262,435)
Ending balance		(4,262,435)
Construction in progress [member]
Disclosure of detailed information about property, plant and equipment [line items]
Beginning balance	209,832
Ending balance	220,438	209,832
Construction in progress [member] | Gross carrying amount [member]
Disclosure of detailed information about property, plant and equipment [line items]
Beginning balance	213,969	192,559
Additions	293,566	281,268
Reclassification	(275,306)	(260,887)
Sales or disposal
Exchange differences on translating foreign operations	(9,717)	2,647
Other	(239)	(1,618)
Ending balance	222,273	213,969
Construction in progress [member] | Gross carrying amount [member] | Effect of adopting IFRS 16 [member]
Disclosure of detailed information about property, plant and equipment [line items]
Beginning balance	0
Ending balance		0
Construction in progress [member] | Gross carrying amount [member] | After adjustment of IFRS 16 [member]
Disclosure of detailed information about property, plant and equipment [line items]
Beginning balance	213,969
Ending balance		213,969
Construction in progress [member] | Accumulated depreciation, amortization and impairment losses [member]
Disclosure of detailed information about property, plant and equipment [line items]
Beginning balance	(4,137)	(2,185)
Depreciation
Impairment losses		(1,975)
Sales or disposal
Exchange differences on translating foreign operations	153	23
Other	2,149
Ending balance	(1,835)	(4,137)
Construction in progress [member] | Accumulated depreciation, amortization and impairment losses [member] | Effect of adopting IFRS 16 [member]
Disclosure of detailed information about property, plant and equipment [line items]
Beginning balance	0
Ending balance		0
Construction in progress [member] | Accumulated depreciation, amortization and impairment losses [member] | After adjustment of IFRS 16 [member]
Disclosure of detailed information about property, plant and equipment [line items]
Beginning balance	¥ (4,137)
Ending balance		¥ (4,137)

Property, Plant and Equipment -

Property, Plant and Equipment - Summary of Changes in the Carrying Amounts of the Right-of-Use Assets (Detail) ¥ in Millions	12 Months Ended
	Mar. 31, 2020JPY (¥)
Disclosure Of Depreciation For The Right Of Use Assets [Line Items]
Opening Balance	¥ 319,668
Additions	79,527
Depreciation	(73,410)
Other	(19,743)
Ending balance	306,042
Land [member]
Disclosure Of Depreciation For The Right Of Use Assets [Line Items]
Opening Balance	81,363
Additions	6,263
Depreciation	(6,218)
Other	(3,492)
Ending balance	77,916
Buildings and structures [member]
Disclosure Of Depreciation For The Right Of Use Assets [Line Items]
Opening Balance	142,598
Additions	19,988
Depreciation	(14,755)
Other	(5,310)
Ending balance	142,521
Machinery and equipment [member]
Disclosure Of Depreciation For The Right Of Use Assets [Line Items]
Opening Balance	95,707
Additions	53,276
Depreciation	(52,437)
Other	(10,941)
Ending balance	¥ 85,605

Intangible Assets - Changes in

Intangible Assets - Changes in Cost, Accumulated Amortization and Impairment Losses, and Carrying Amounts of Intangible Assets (Detail) - JPY (¥) ¥ in Millions	12 Months Ended
	Mar. 31, 2020		Mar. 31, 2019
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]
Beginning balance	¥ 744,368
Ending balance	760,434		¥ 744,368
Gross carrying amount [member]
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]
Beginning balance	1,447,994		1,361,596
Additions	29,036		15,792
Internally developed	208,767		176,207
Sales or disposal	(146,874)		(109,584)
Exchange differences on translating foreign operations	(14,452)		1,817
Other	(2,024)		2,166
Ending balance	1,522,447		1,447,994
Accumulated depreciation, amortization and impairment losses [member]
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]
Beginning balance	(703,626)		(620,082)
Amortization	(171,378)		(188,567)
Sales or disposal	144,604		107,138
Exchange differences on translating foreign operations	8,154		(1,827)
Other	(39,767)	[1]	(288)
Ending balance	(762,013)		(703,626)
Capitalized development costs [member]
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]
Beginning balance	611,827
Ending balance	627,192		611,827
Capitalized development costs [member] | Gross carrying amount [member]
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]
Beginning balance	1,030,142		972,964
Internally developed	192,397		161,232
Sales or disposal	(136,575)		(104,237)
Exchange differences on translating foreign operations	(2,439)		183
Ending balance	1,083,525		1,030,142
Capitalized development costs [member] | Accumulated depreciation, amortization and impairment losses [member]
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]
Beginning balance	(418,315)		(374,443)
Amortization	(136,508)		(148,100)
Sales or disposal	136,575		104,237
Exchange differences on translating foreign operations	449		(9)
Other	(38,534)	[1]
Ending balance	(456,333)		(418,315)
Software [member]
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]
Beginning balance	105,066
Ending balance	99,376		105,066
Software [member] | Gross carrying amount [member]
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]
Beginning balance	379,564		355,163
Additions	14,971		11,836
Internally developed	16,370		14,975
Sales or disposal	(9,473)		(5,082)
Exchange differences on translating foreign operations	(9,684)		2,701
Other	984		(29)
Ending balance	392,732		379,564
Software [member] | Accumulated depreciation, amortization and impairment losses [member]
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]
Beginning balance	(274,498)		(236,688)
Amortization	(33,199)		(39,224)
Sales or disposal	7,870		2,842
Exchange differences on translating foreign operations	6,787		(2,040)
Other	(316)	[1]	612
Ending balance	(293,356)		(274,498)
Other [member]
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]
Beginning balance	27,475
Ending balance	33,866		27,475
Other [member] | Gross carrying amount [member]
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]
Beginning balance	38,288		33,469
Additions	14,065		3,956
Sales or disposal	(826)		(265)
Exchange differences on translating foreign operations	(2,329)		(1,067)
Other	(3,008)		2,195
Ending balance	46,190		38,288
Other [member] | Accumulated depreciation, amortization and impairment losses [member]
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]
Beginning balance	(10,813)		(8,951)
Amortization	(1,671)		(1,243)
Sales or disposal	159		59
Exchange differences on translating foreign operations	918		222
Other	(917)	[1]	(900)
Ending balance	¥ (12,324)		¥ (10,813)
[1]	For certain capitalized development costs in progress related to Automobile business segment, the Company recognized the carrying amount in excess of recoverable amount as an expense in the consolidated statement of income for the year ended March 31, 2020.

Trade Payables - Summary of Tra

Trade Payables - Summary of Trade Payables (Detail) - JPY (¥) ¥ in Millions	Mar. 31, 2020	Mar. 31, 2019
Disclosure of financial liabilities [line items]
Trade payables	¥ 958,469	¥ 1,184,882
Trade accounts and notes payable [Member]
Disclosure of financial liabilities [line items]
Trade payables	844,183	1,056,065
Other [member]
Disclosure of financial liabilities [line items]
Trade payables	¥ 114,286	¥ 128,817

Financing Liabilities - Financi

Financing Liabilities - Financing Liabilities Presented in Current Liabilities (Detail) - JPY (¥) ¥ in Millions	Mar. 31, 2020	Mar. 31, 2019
Disclosure of detailed information about borrowings [line items]
Current financing liabilities	¥ 1,424,667	¥ 1,473,624
Reclassification from non-current liabilities (Current portion)	1,823,790	1,715,158
Total	3,248,457	3,188,782
Commercial paper [member]
Disclosure of detailed information about borrowings [line items]
Current financing liabilities	976,606	943,905
Loans [member]
Disclosure of detailed information about borrowings [line items]
Current financing liabilities	355,667	366,620
Medium-term notes [member]
Disclosure of detailed information about borrowings [line items]
Current financing liabilities	32,647	122,080
Asset-backed securities [member]
Disclosure of detailed information about borrowings [line items]
Current financing liabilities	¥ 59,747	¥ 41,019

Financing Liabilities - Weighte

Financing Liabilities - Weighted Average Interest Rates for Financing Liabilities Presented in Current Liabilities (Excluding Reclassification from Non-current Liabilities) (Detail)	Mar. 31, 2020	Mar. 31, 2019
Current borrowings [member] | Weighted average [member]
Disclosure of detailed information about borrowings [line items]
Weighted average interest rate	1.21%	1.85%

Financing Liabilities - Finan_2

Financing Liabilities - Financing Liabilities Presented in Non-current Liabilities (Detail) - JPY (¥) ¥ in Millions	Mar. 31, 2020	Mar. 31, 2019
Disclosure of detailed information about borrowings [line items]
Non-current financing liabilities	¥ 6,045,019	¥ 5,857,496
Reclassification to current liabilities (Current portion)	(1,823,790)	(1,715,158)
Total	4,221,229	4,142,338
Loans [member]
Disclosure of detailed information about borrowings [line items]
Non-current financing liabilities	1,204,588	1,235,791
Medium-term notes [member]
Disclosure of detailed information about borrowings [line items]
Non-current financing liabilities	3,169,407	3,151,868
Corporate bonds [member]
Disclosure of detailed information about borrowings [line items]
Non-current financing liabilities	599,426	444,517
Asset-backed securities [member]
Disclosure of detailed information about borrowings [line items]
Non-current financing liabilities	¥ 1,071,598	¥ 1,025,320

Financing Liabilities - Interes

Financing Liabilities - Interest Rate Range and Payment Due Date for Financing Liabilities Presented in Non-current Liabilities (Including Reclassification to Current Liabilities) (Detail) - Non-current liabilities [member]	12 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Loans [member] | Bottom of range [member]
Disclosure of financial instruments by type of interest rate [line items]
Interest rate	0.07%	0.10%
Payment due	2020	2019
Loans [member] | Top of range [member]
Disclosure of financial instruments by type of interest rate [line items]
Interest rate	11.00%	10.50%
Payment due	2046	2046
Medium-term notes [member] | Bottom of range [member]
Disclosure of financial instruments by type of interest rate [line items]
Interest rate	0.35%	0.35%
Payment due	2020	2019
Medium-term notes [member] | Top of range [member]
Disclosure of financial instruments by type of interest rate [line items]
Interest rate	3.88%	3.88%
Payment due	2028	2028
Corporate bonds [member] | Bottom of range [member]
Disclosure of financial instruments by type of interest rate [line items]
Interest rate	0.01%	0.01%
Payment due	2020	2019
Corporate bonds [member] | Top of range [member]
Disclosure of financial instruments by type of interest rate [line items]
Interest rate	1.17%	0.59%
Payment due	2027	2023
Asset-backed securities [member] | Bottom of range [member]
Disclosure of financial instruments by type of interest rate [line items]
Interest rate	0.11%	0.11%
Payment due	2020	2019
Asset-backed securities [member] | Top of range [member]
Disclosure of financial instruments by type of interest rate [line items]
Interest rate	3.30%	3.30%
Payment due	2024	2024

Financing Liabilities - Pledged

Financing Liabilities - Pledged Assets for Financing Liabilities (Detail) - JPY (¥) ¥ in Millions	Mar. 31, 2020	Mar. 31, 2019
Borrowings [abstract]
Trade receivables	¥ 22,093	¥ 26,286
Receivables from financial services	1,140,583	1,134,489
Inventories	17,956	26,677
Equipment on operating leases	81,501
Property, plant and equipment	1,478	55,139
Total	¥ 1,263,611	¥ 1,242,591

Financing Liabilities - The Cha

Financing Liabilities - The Changes in Liabilities Arising from Financing Activities (Detail) - JPY (¥) ¥ in Millions		12 Months Ended
		Mar. 31, 2020		Mar. 31, 2019	Mar. 31, 2018
Disclosure of reconciliation of liabilities arising from financing activities [line items]
Changes in liabilities arising from financing activities, beginning balance		¥ 7,418,005		¥ 6,855,427	¥ 6,903,782
Cash flows from financing activities		264,017		351,947	134,478
Cash flows from operating activities		(10,001)		(9,187)	(3,308)
Non-cash changes, Acquisitions		78,923		37,028	50,610
Non-cash changes, Changes in foreign currency exchange rates		(217,190)		132,261	(200,457)
Non-cash changes, Changes in fair value		14,935		47,487	(36,466)
Non-cash changes, Other		(9,580)		3,042	6,788
Changes in liabilities arising from financing activities, ending balance		7,811,341		7,418,005	6,855,427
Adjusted [member]
Disclosure of reconciliation of liabilities arising from financing activities [line items]
Changes in liabilities arising from financing activities, beginning balance		7,690,237
Changes in liabilities arising from financing activities, ending balance				7,690,237
Short-term financing liabilities [member]
Disclosure of reconciliation of liabilities arising from financing activities [line items]
Changes in liabilities arising from financing activities, beginning balance		1,473,624		1,236,647	1,162,111
Cash flows from financing activities		(1,993)		221,551	101,885
Non-cash changes, Changes in foreign currency exchange rates		(42,424)		14,568	(28,854)
Non-cash changes, Other		(4,540)		858	1,505
Changes in liabilities arising from financing activities, ending balance		1,424,667		1,473,624	1,236,647
Long-term financing liabilities [member]
Disclosure of reconciliation of liabilities arising from financing activities [line items]
Changes in liabilities arising from financing activities, beginning balance		5,857,496		5,562,363	5,647,007
Cash flows from financing activities		362,131		174,160	80,042
Non-cash changes, Changes in foreign currency exchange rates		(170,345)		118,789	(169,403)
Non-cash changes, Other		(4,263)		2,184	4,717
Changes in liabilities arising from financing activities, ending balance		6,045,019		5,857,496	5,562,363
Lease liabilities [member]
Disclosure of reconciliation of liabilities arising from financing activities [line items]
Changes in liabilities arising from financing activities, beginning balance		62,308		72,623	69,364
Cash flows from financing activities		(78,659)	[1]	(47,106)	(47,449)
Non-cash changes, Acquisitions		78,923	[1]	37,028	50,610
Non-cash changes, Changes in foreign currency exchange rates		(3,987)	[1]	(237)	(468)
Non-cash changes, Other		(777)	[1]		566
Changes in liabilities arising from financing activities, ending balance		330,040	[1]	62,308	72,623
Lease liabilities [member] | Adjusted [member]
Disclosure of reconciliation of liabilities arising from financing activities [line items]
Changes in liabilities arising from financing activities, beginning balance	[1]	334,540
Changes in liabilities arising from financing activities, ending balance	[1]			334,540
Derivative financial liabilities (assets) [member]
Disclosure of reconciliation of liabilities arising from financing activities [line items]
Changes in liabilities arising from financing activities, beginning balance	[2]	24,577		(16,206)	25,300
Cash flows from financing activities	[2]	(17,462)		3,342
Cash flows from operating activities	[2]	(10,001)		(9,187)	(3,308)
Non-cash changes, Changes in foreign currency exchange rates	[2]	(434)		(859)	(1,732)
Non-cash changes, Changes in fair value	[2]	14,935		47,487	(36,466)
Changes in liabilities arising from financing activities, ending balance	[2]	¥ 11,615		¥ 24,577	¥ (16,206)
[1]	Honda has adopted IFRS 16 with a date of initial application of April 1, 2019 and recognized additional lease liabilities of ¥272,232 million as of April 1, 2019. For more details on the amount of the additional lease liabilities, see note “(2) Basis of Preparation (d) Changes in Accounting Policies.”
[2]	Derivative financial liabilities (assets) are held by the finance subsidiaries of the Company to hedge foreign currency risk for principals and interests payment of long-term financing liabilities. The cash flows related to repayments of principals are included in cash flows from financing activities, while the cash flows related to interest paid are included in cash flows from operating activities.

Financing Liabilities - The C_2

Financing Liabilities - The Changes in Liabilities Arising from Financing Activities (Parenthetical) (Detail) - JPY (¥) ¥ in Millions	Mar. 31, 2020	Apr. 01, 2019	Mar. 31, 2019
Disclosure of reconciliation of liabilities arising from financing activities [line items]
Lease liabilities	¥ 330,040	¥ 334,540	¥ 115,634
IFRS 16 [member]
Disclosure of reconciliation of liabilities arising from financing activities [line items]
Lease liabilities		¥ 272,232

Other Financial Liabilities - S

Other Financial Liabilities - Summary of Other Financial Liabilities (Detail) - JPY (¥) ¥ in Millions	Mar. 31, 2020	Mar. 31, 2019
Disclosure of financial liabilities [line items]
Other financial liabilities	¥ 512,635	¥ 196,599
Current liabilities	209,065	132,910
Non-current liabilities	303,570	63,689
Other financial liabilities	512,635	196,599
Lease liabilities [member]
Disclosure of financial liabilities [line items]
Other financial liabilities	330,040	62,308
Other financial liabilities	330,040	62,308
Financial liabilities measured at amortized cost [member]
Disclosure of financial liabilities [line items]
Other financial liabilities	67,427	64,800
Other financial liabilities	67,427	64,800
Financial liabilities measured at fair value through profit or loss [member] | Derivatives [member]
Disclosure of financial liabilities [line items]
Other financial liabilities	115,168	69,491
Other financial liabilities	¥ 115,168	¥ 69,491

Provisions - Components of and

Provisions - Components of and Changes in Provisions (Detail) - JPY (¥) ¥ in Millions		12 Months Ended
		Mar. 31, 2020		Mar. 31, 2019	Mar. 31, 2018
Disclosure of other provisions [line items]
Beginning balance		¥ 569,508
Provision		284,350
Write-offs		(273,019)
Reversal		(36,000)
Exchange differences on translating foreign operations		(19,225)
Ending balance		525,614		¥ 569,508
Product warranties [member]
Disclosure of other provisions [line items]
Beginning balance	[1]	458,482
Provision		212,275	[1]	247,194	¥ 219,575
Write-offs	[1]	(250,522)
Reversal	[1]	(26,843)
Exchange differences on translating foreign operations	[1]	(12,703)
Ending balance	[1]	380,689		458,482
Other [member]
Disclosure of other provisions [line items]
Beginning balance		111,026
Provision		72,075
Write-offs		(22,497)
Reversal		(9,157)
Exchange differences on translating foreign operations		(6,522)
Ending balance		¥ 144,925		¥ 111,026
[1]	Honda recognizes provisions for product warranties to cover future product warranty expenses. Honda recognizes costs for general warranties on products Honda sells and for specific warranty programs, including product recalls. Honda recognizes general estimated warranty costs at the time products are sold to customers. Honda also recognizes specific estimated warranty program costs when it is probable that an outflow of resources embodying economic benefits will be required to settle the obligation, and a reliable estimate can be made of the amount of the obligation. These provisions are estimated based on historical warranty claim experience with consideration given to the expected level of future warranty costs as well as current information on repair costs. Provision for product warranties are utilized for expenditures based on the demand from customers and dealers.

Provisions - Current Liabilitie

Provisions - Current Liabilities and Non-current Liabilities of Provisions (Detail) - JPY (¥) ¥ in Millions	Mar. 31, 2020	Mar. 31, 2019
Disclosure of other provisions [abstract]
Current liabilities	¥ 287,175	¥ 348,763
Non-current liabilities	238,439	220,745
Total	¥ 525,614	¥ 569,508

Employee Benefits - Additional

Employee Benefits - Additional Information (Detail) ¥ in Millions	12 Months Ended
	Mar. 31, 2020JPY (¥)
Japanese plans [member]
Disclosure of defined benefit plans [line items]
Contribiution in pension plan	¥ 21,841
Foreign plans [member]
Disclosure of defined benefit plans [line items]
Contribiution in pension plan	¥ 20,333

Employee Benefits - Changes in

Employee Benefits - Changes in Present Value of Defined Benefit Obligations and Fair Value of Plan Assets (Detail) - JPY (¥) ¥ in Millions	12 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Disclosure of net defined benefit liability (asset) [line items]
Plan participants' contributions
Remeasurements:
Exchange differences on translating foreign operations
Japanese plans [member]
Remeasurements:
Net defined benefit liabilities	169,163	121,850
Foreign plans [member]
Remeasurements:
Net defined benefit liabilities	295,408	225,580
Present value of defined benefit obligation [member] | Japanese plans [member]
Disclosure of net defined benefit liability (asset) [line items]
Balance at beginning of year	1,366,380	1,331,475
Current service cost	36,331	36,300
Past service cost	0
Interest cost	7,581	9,535
Plan participants' contributions	0
Remeasurements:
Changes in demographic assumptions	(6,476)	(25,360)
Changes in financial assumptions	157	34,655
Other	159	21,981
Benefits paid	(47,088)	(42,206)
Exchange differences on translating foreign operations	0
Balance at end of year	1,357,044	1,366,380
Present value of defined benefit obligation [member] | Foreign plans [member]
Disclosure of net defined benefit liability (asset) [line items]
Balance at beginning of year	1,086,438	1,042,753
Current service cost	29,063	29,133
Past service cost	(2,254)	338
Interest cost	35,635	39,547
Plan participants' contributions	1,524	1,903
Remeasurements:
Changes in demographic assumptions	(5,990)	(3,648)
Changes in financial assumptions	70,892	36,157
Other	14,791	8,943
Benefits paid	(45,504)	(96,801)
Exchange differences on translating foreign operations	(40,684)	28,113
Balance at end of year	1,143,911	1,086,438
Fair value of plan assets [member] | Japanese plans [member]
Disclosure of net defined benefit liability (asset) [line items]
Balance at beginning of year	1,244,530	1,219,073
Interest cost	6,967	8,807
Actual return on plan assets, excluding interest income	(42,333)	34,142
Employer contributions	22,168	22,109
Remeasurements:
Benefits paid	(43,451)	(39,601)
Balance at end of year	1,187,881	1,244,530
Fair value of plan assets [member] | Foreign plans [member]
Disclosure of net defined benefit liability (asset) [line items]
Balance at beginning of year	860,858	807,528
Interest cost	28,682	30,553
Actual return on plan assets, excluding interest income	(10,503)	10,489
Employer contributions	50,926	87,803
Plan participants' contributions	1,524	1,903
Remeasurements:
Benefits paid	(45,504)	(96,801)
Exchange differences on translating foreign operations	(37,480)	19,383
Balance at end of year	¥ 848,503	¥ 860,858

Employee Benefits - Fair Value

Employee Benefits - Fair Value of Japanese and Foreign Pension Plan Assets By Asset Category (Detail) - JPY (¥) ¥ in Millions	Mar. 31, 2020	Mar. 31, 2019
Disclosure of fair value of plan assets [line items]
Cash and cash equivalents
Equity securities
Debt securities
General accounts
Separate accounts
Pooled funds
Japanese plans [member]
Disclosure of fair value of plan assets [line items]
Cash and cash equivalents	7,033	9,207
General accounts	36,991	34,663
Separate accounts	15,961	16,569
Other	1,439	5,850
Total	1,187,881	1,244,530
Japanese plans [member] | Real estate funds [member]
Disclosure of fair value of plan assets [line items]
Pooled funds	122
Japanese plans [member] | Hedge funds [member]
Disclosure of fair value of plan assets [line items]
Pooled funds	117,841	116,183
Japanese plans [member] | Commingled and other mutual funds [member]
Disclosure of fair value of plan assets [line items]
Pooled funds	134,070	115,773
Japanese plans [member] | Japan [member]
Disclosure of fair value of plan assets [line items]
Equity securities	29,153	32,886
Debt securities	75,526	71,487
Japanese plans [member] | United States [member]
Disclosure of fair value of plan assets [line items]
Equity securities	188,020	234,226
Debt securities	160,851	146,709
Japanese plans [member] | Other [member]
Disclosure of fair value of plan assets [line items]
Equity securities	196,473	231,404
Debt securities	224,401	229,573
Japanese plans [member] | Level 1 [member]
Disclosure of fair value of plan assets [line items]
Cash and cash equivalents	7,033	9,207
Other	314	32
Total	674,218	767,622
Japanese plans [member] | Level 1 [member] | Commingled and other mutual funds [member]
Disclosure of fair value of plan assets [line items]
Pooled funds	4,476	3,859
Japanese plans [member] | Level 1 [member] | Japan [member]
Disclosure of fair value of plan assets [line items]
Equity securities	29,153	32,885
Debt securities	75,526	71,487
Japanese plans [member] | Level 1 [member] | United States [member]
Disclosure of fair value of plan assets [line items]
Equity securities	188,020	234,226
Debt securities	4,495	3,036
Japanese plans [member] | Level 1 [member] | Other [member]
Disclosure of fair value of plan assets [line items]
Equity securities	196,401	231,162
Debt securities	168,800	181,728
Japanese plans [member] | Unquoted, Market price in active market [member]
Disclosure of fair value of plan assets [line items]
General accounts	36,991	34,663
Separate accounts	15,961	16,569
Other	1,125	5,818
Total	513,663	476,908
Japanese plans [member] | Unquoted, Market price in active market [member] | Real estate funds [member]
Disclosure of fair value of plan assets [line items]
Pooled funds	122
Japanese plans [member] | Unquoted, Market price in active market [member] | Hedge funds [member]
Disclosure of fair value of plan assets [line items]
Pooled funds	117,841	116,183
Japanese plans [member] | Unquoted, Market price in active market [member] | Commingled and other mutual funds [member]
Disclosure of fair value of plan assets [line items]
Pooled funds	129,594	111,914
Japanese plans [member] | Unquoted, Market price in active market [member] | Japan [member]
Disclosure of fair value of plan assets [line items]
Equity securities		1
Japanese plans [member] | Unquoted, Market price in active market [member] | United States [member]
Disclosure of fair value of plan assets [line items]
Debt securities	156,356	143,673
Japanese plans [member] | Unquoted, Market price in active market [member] | Other [member]
Disclosure of fair value of plan assets [line items]
Equity securities	72	242
Debt securities	55,601	47,845
Foreign plans [member]
Disclosure of fair value of plan assets [line items]
Cash and cash equivalents	25,202	36,373
Other	20,196	14,611
Total	848,503	860,858
Foreign plans [member] | Real estate funds [member]
Disclosure of fair value of plan assets [line items]
Pooled funds	55,802	53,100
Foreign plans [member] | Private equity funds [member]
Disclosure of fair value of plan assets [line items]
Pooled funds	107,319	91,264
Foreign plans [member] | Hedge funds [member]
Disclosure of fair value of plan assets [line items]
Pooled funds	49,198	61,520
Foreign plans [member] | Commingled and other mutual funds [member]
Disclosure of fair value of plan assets [line items]
Pooled funds	321,440	247,386
Foreign plans [member] | Japan [member]
Disclosure of fair value of plan assets [line items]
Equity securities	8,673	13,970
Debt securities	389	433
Foreign plans [member] | United States [member]
Disclosure of fair value of plan assets [line items]
Equity securities	60,026	94,332
Debt securities	123,331	119,942
Foreign plans [member] | Other [member]
Disclosure of fair value of plan assets [line items]
Equity securities	66,798	117,017
Debt securities	10,129	10,910
Foreign plans [member] | Level 1 [member]
Disclosure of fair value of plan assets [line items]
Cash and cash equivalents	25,202	36,373
Other	524	(1,447)
Total	169,374	264,513
Foreign plans [member] | Level 1 [member] | Commingled and other mutual funds [member]
Disclosure of fair value of plan assets [line items]
Pooled funds	8,151	8,882
Foreign plans [member] | Level 1 [member] | Japan [member]
Disclosure of fair value of plan assets [line items]
Equity securities	8,673	13,970
Foreign plans [member] | Level 1 [member] | United States [member]
Disclosure of fair value of plan assets [line items]
Equity securities	60,026	94,332
Foreign plans [member] | Level 1 [member] | Other [member]
Disclosure of fair value of plan assets [line items]
Equity securities	66,798	112,403
Foreign plans [member] | Unquoted, Market price in active market [member]
Disclosure of fair value of plan assets [line items]
Other	19,672	16,058
Total	679,129	596,345
Foreign plans [member] | Unquoted, Market price in active market [member] | Real estate funds [member]
Disclosure of fair value of plan assets [line items]
Pooled funds	55,802	53,100
Foreign plans [member] | Unquoted, Market price in active market [member] | Private equity funds [member]
Disclosure of fair value of plan assets [line items]
Pooled funds	107,319	91,264
Foreign plans [member] | Unquoted, Market price in active market [member] | Hedge funds [member]
Disclosure of fair value of plan assets [line items]
Pooled funds	49,198	61,520
Foreign plans [member] | Unquoted, Market price in active market [member] | Commingled and other mutual funds [member]
Disclosure of fair value of plan assets [line items]
Pooled funds	313,289	238,504
Foreign plans [member] | Unquoted, Market price in active market [member] | Japan [member]
Disclosure of fair value of plan assets [line items]
Debt securities	389	433
Foreign plans [member] | Unquoted, Market price in active market [member] | United States [member]
Disclosure of fair value of plan assets [line items]
Debt securities	123,331	119,942
Foreign plans [member] | Unquoted, Market price in active market [member] | Other [member]
Disclosure of fair value of plan assets [line items]
Equity securities		4,614
Debt securities	¥ 10,129	¥ 10,910

Employee Benefits - Significant

Employee Benefits - Significant Actuarial Assumptions Used to Determine Present Value of Defined Benefit Obligations (Detail)	Mar. 31, 2020	Mar. 31, 2019
Japanese plans [member]
Disclosure of defined benefit plans [line items]
Discount rate	0.60%	0.60%
Rate of salary increase	1.60%	1.60%
Foreign plans [member] | Bottom of range [member]
Disclosure of defined benefit plans [line items]
Discount rate	2.50%	2.50%
Rate of salary increase	2.00%	2.50%
Foreign plans [member] | Top of range [member]
Disclosure of defined benefit plans [line items]
Discount rate	3.80%	3.90%
Rate of salary increase	2.80%	3.00%

Employee Benefits - Effects on

Employee Benefits - Effects on Defined Benefit Obligations Due to Increase or Decrease in Discount Rate (Detail) - Discount rates [member] - JPY (¥) ¥ in Millions	Mar. 31, 2020	Mar. 31, 2019
Japanese plans [member]
Disclosure of sensitivity analysis for actuarial assumptions [line items]
Effects on defined benefit obligations from a decrease in the discount rate	¥ 110,540	¥ 114,468
Effects on defined benefit obligations from a increase in the discount rate	97,949	101,281
Foreign plans [member]
Disclosure of sensitivity analysis for actuarial assumptions [line items]
Effects on defined benefit obligations from a decrease in the discount rate	103,305	102,878
Effects on defined benefit obligations from a increase in the discount rate	¥ 91,314	¥ 90,659

Employee Benefits - Effects o_2

Employee Benefits - Effects on Defined Benefit Obligations Due to Increase or Decrease in Discount Rate (Parenthetical) (Detail) - Discount rates [member]	Mar. 31, 2020	Mar. 31, 2019
Disclosure of sensitivity analysis for actuarial assumptions [line items]
Percentage of decrease in the discount rate	0.50%	0.50%
Percentage of increase in the discount rate	0.50%	0.50%

Employee Benefits - Weighted Av

Employee Benefits - Weighted Average Duration of Defined Benefit Obligations (Detail)	12 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Japanese plans [member]
Disclosure of defined benefit plans [line items]
Weighted average duration of defined benefit obligations	15 years	16 years
Foreign plans [member]
Disclosure of defined benefit plans [line items]
Weighted average duration of defined benefit obligations	16 years	17 years

Employee Benefits - Personnel E

Employee Benefits - Personnel Expenses Included in Consolidated Statements of Income (Detail) - JPY (¥) ¥ in Millions	12 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2018
Disclosure of defined benefit plans [abstract]
Personnel expenses	¥ 1,605,553	¥ 1,634,785	¥ 1,576,012

Equity - Financial Liabilities

Equity - Financial Liabilities and Equity (Detail) - JPY (¥) ¥ in Millions	Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2017
Equity and liabilities [abstract]
Financing liabilities	¥ 7,469,686	¥ 7,331,120
Equity	¥ 8,286,023	¥ 8,565,790	¥ 7,569,626

Equity - Total Number of Shares

Equity - Total Number of Shares Authorized and Issued (Detail) - shares	12 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2018
Total number of authorized shares
Common shares, no par value	7,086,000,000	7,086,000,000	7,086,000,000
Total number of issued shares
Balance at beginning of year	1,811,428,430	1,811,428,430	1,811,428,430
Changes during the year
Balance at end of year	1,811,428,430	1,811,428,430	1,811,428,430

Equity - Additional Information

Equity - Additional Information (Detail)	12 Months Ended
	Mar. 31, 2020
Disclosure of classes of share capital [line items]
Percentage of cash dividends from retained earnings shall be appropriated as a capital reserve	10.00%
Percentage of capital reserve and legal reserve to common stock	25.00%
Bottom of range [member]
Disclosure of classes of share capital [line items]
Minimum percentage of paid-in amount or proceeds of issuance of shares allowed to be incorporated in common stock	50.00%

Equity - Total Number of Treasu

Equity - Total Number of Treasury Stock Held (Detail) - shares	Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2018	Mar. 31, 2017
Disclosure of classes of share capital [line items]
Common shares	1,811,428,430	1,811,428,430	1,811,428,430	1,811,428,430
Treasury stock [member]
Disclosure of classes of share capital [line items]
Common shares	84,818,644	51,867,045	33,150,615

Equity - Changes in Other Compo

Equity - Changes in Other Components of Equity (Detail) - JPY (¥) ¥ in Millions	12 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2018
Disclosure of reserves within equity [line items]
Beginning balance	¥ 8,565,790		¥ 7,569,626
Adjustment during the year	(451,209)	¥ 26,321	(159,244)
Reclassification to retained earnings
Ending balance	8,286,023	8,565,790
Previously stated [member]
Disclosure of reserves within equity [line items]
Beginning balance		8,234,095
Ending balance			8,234,095
Effect of changes in accounting policy [member]
Disclosure of reserves within equity [line items]
Beginning balance		(47,035)
Ending balance			(47,035)
Effect of hyperinflation [member]
Disclosure of reserves within equity [line items]
Beginning balance		5,442
Ending balance			5,442
Adjusted balance [member]
Disclosure of reserves within equity [line items]
Beginning balance		8,192,502
Ending balance			8,192,502
Remeasurements of defined benefit plans [member]
Disclosure of reserves within equity [line items]
Beginning balance
Adjustment during the year	(102,230)	(23,383)	12,125
Reclassification to retained earnings	102,230	23,383	(12,125)
Ending balance
Remeasurements of defined benefit plans [member] | Previously stated [member]
Disclosure of reserves within equity [line items]
Beginning balance
Ending balance
Remeasurements of defined benefit plans [member] | Effect of changes in accounting policy [member]
Disclosure of reserves within equity [line items]
Adjustment during the year
Remeasurements of defined benefit plans [member] | Effect of hyperinflation [member]
Disclosure of reserves within equity [line items]
Beginning balance
Ending balance
Remeasurements of defined benefit plans [member] | Adjusted balance [member]
Disclosure of reserves within equity [line items]
Beginning balance
Ending balance
Net changes in revaluation of financial assets measured at fair value through other comprehensive income [member]
Disclosure of reserves within equity [line items]
Beginning balance	49,228		85,947
Adjustment during the year	(24,559)	(26,696)	20,655
Reclassification to retained earnings	207	(29,273)	(1,197)
Ending balance	24,876	49,228
Net changes in revaluation of financial assets measured at fair value through other comprehensive income [member] | Previously stated [member]
Disclosure of reserves within equity [line items]
Beginning balance		105,405
Ending balance			105,405
Net changes in revaluation of financial assets measured at fair value through other comprehensive income [member] | Effect of changes in accounting policy [member]
Disclosure of reserves within equity [line items]
Adjustment during the year		(208)
Net changes in revaluation of financial assets measured at fair value through other comprehensive income [member] | Effect of hyperinflation [member]
Disclosure of reserves within equity [line items]
Beginning balance
Ending balance
Net changes in revaluation of financial assets measured at fair value through other comprehensive income [member] | Adjusted balance [member]
Disclosure of reserves within equity [line items]
Beginning balance		105,197
Ending balance			105,197
Exchange differences on translating foreign operations [member]
Disclosure of reserves within equity [line items]
Beginning balance	165,155		265,459
Adjustment during the year	(304,670)	77,372	(192,572)
Reclassification to retained earnings
Ending balance	(139,515)	165,155
Exchange differences on translating foreign operations [member] | Previously stated [member]
Disclosure of reserves within equity [line items]
Beginning balance		72,887
Ending balance			72,887
Exchange differences on translating foreign operations [member] | Effect of changes in accounting policy [member]
Disclosure of reserves within equity [line items]
Adjustment during the year
Exchange differences on translating foreign operations [member] | Effect of hyperinflation [member]
Disclosure of reserves within equity [line items]
Beginning balance		14,896
Ending balance			14,896
Exchange differences on translating foreign operations [member] | Adjusted balance [member]
Disclosure of reserves within equity [line items]
Beginning balance		87,783
Ending balance			87,783
Other components of equity [member]
Disclosure of reserves within equity [line items]
Beginning balance	214,383		351,406
Adjustment during the year	(431,459)	27,293	(159,792)
Reclassification to retained earnings	102,437	(5,890)	(13,322)
Ending balance	¥ (114,639)	214,383
Other components of equity [member] | Previously stated [member]
Disclosure of reserves within equity [line items]
Beginning balance		178,292
Ending balance			178,292
Other components of equity [member] | Effect of changes in accounting policy [member]
Disclosure of reserves within equity [line items]
Beginning balance		(208)
Adjustment during the year		(208)
Ending balance			(208)
Other components of equity [member] | Effect of hyperinflation [member]
Disclosure of reserves within equity [line items]
Beginning balance		14,896
Ending balance			14,896
Other components of equity [member] | Adjusted balance [member]
Disclosure of reserves within equity [line items]
Beginning balance		¥ 192,980
Ending balance			¥ 192,980

Equity - Each Component of Othe

Equity - Each Component of Other Comprehensive Income and Related Tax Effect Including Non-controlling Interests (Detail) - JPY (¥) ¥ in Millions	12 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2018
Items that will not be reclassified to profit or loss, Before-tax:
Remeasurements of defined benefit plans, Net changes, Before-tax	¥ (132,188)	¥ (25,538)	¥ 47,383
Net changes in revaluation of financial assets measured at fair value through other comprehensive income, Net changes, Before-tax	(33,565)	(34,898)	20,020
Share of other comprehensive income of investments accounted for using the equity method, Net changes, Before-tax	(1,735)	(3,029)	1,729
Items that may be reclassified subsequently to profit or loss, Before-tax:
Net changes in revaluation of financial assets measured at fair value through other comprehensive income, Amount incurred during the year, Before-tax	356	378
Net changes in revaluation of financial assets measured at fair value through other comprehensive income, Reclassification to profit or loss, Before-tax	(31)	(88)
Net changes in revaluation of financial assets measured at fair value through other comprehensive income, Net changes, Before-tax	325	290
Exchange differences on translating foreign operations, Amount incurred during the year, Before-tax	(292,590)	97,122	(204,372)
Exchange differences on translating foreign operations, Reclassification to profit or loss, Before-tax	(611)	(1,554)	188
Exchange differences on translating foreign operations, Net changes, Before-tax	(293,201)	95,568	(204,184)
Share of other comprehensive income of investments accounted for using the equity method, Amount incurred during the year, Before-tax	(31,054)	(19,793)	12,266
Share of other comprehensive income of investments accounted for using the equity method, Reclassification to profit or loss, Before-tax			(1,155)
Share of other comprehensive income of investments accounted for using the equity method, Net changes, Before-tax	(31,054)	(19,793)	11,111
Total other comprehensive income, Before-tax	(491,418)	12,600	(123,941)
Items that will not be reclassified to profit or loss, Tax benefit (expense):
Remeasurements of defined benefit plans, Net changes, Tax benefit (expense)	29,205	1,793	(34,039)
Net changes in revaluation of financial assets measured at fair value through other comprehensive income, Net changes, Tax benefit (expense)	10,204	10,852	(732)
Share of other comprehensive income of investments accounted for using the equity method, Net changes, Tax benefit (expense)	185	192	(41)
Items that may be reclassified subsequently to profit or loss, Tax benefit (expense):
Net changes in revaluation of financial assets measured at fair value through other comprehensive income, Amount incurred during the year, Tax benefit (expense)	(47)	(55)
Net changes in revaluation of financial assets measured at fair value through other comprehensive income, Reclassification to profit or loss, Tax benefit (expense)	1	(7)
Net changes in revaluation of financial assets measured at fair value through other comprehensive income, Net changes, Tax benefit (expense)	(46)	(62)
Exchange differences on translating foreign operations, Amount incurred during the year, Tax benefit (expense)	(176)	(443)	(4)
Exchange differences on translating foreign operations, Reclassification to profit or loss, Tax benefit (expense)	176	443	4
Exchange differences on translating foreign operations, Net changes, Tax benefit (expense)
Share of other comprehensive income of investments accounted for using the equity method, Amount incurred during the year, Tax benefit (expense)	661	946	(521)
Share of other comprehensive income of investments accounted for using the equity method, Reclassification to profit or loss, Tax benefit (expense)			30
Share of other comprehensive income of investments accounted for using the equity method, Net changes, Tax benefit (expense)	661	946	(491)
Total other comprehensive income, Tax benefit (expense)	40,209	13,721	(35,303)
Items that will not be reclassified to profit or loss, Net-of-tax:
Remeasurements of defined benefit plans, Net changes, Net-of-tax	(102,983)	(23,745)	13,344
Net changes in revaluation of financial assets measured at fair value through other comprehensive income, Net changes, Net-of-tax	(23,361)	(24,046)	19,288
Share of other comprehensive income of investments accounted for using the equity method, Net changes, Net-of-tax	(1,550)	(2,837)	1,688
Items that may be reclassified subsequently to profit or loss, Net-of-tax:
Net changes in revaluation of financial assets measured at fair value through other comprehensive income, Amount incurred during the year, Net-of-tax	309	323
Net changes in revaluation of financial assets measured at fair value through other comprehensive income, Reclassification to profit or loss, Net-of-tax	(30)	(95)
Net changes in revaluation of financial assets measured at fair value through other comprehensive income, Net changes, Net-of-tax	279	228
Exchange differences on translating foreign operations, Amount incurred during the year, Net-of-tax	(292,766)	96,679	(204,376)
Exchange differences on translating foreign operations, Reclassification to profit or loss, Net-of-tax	(435)	(1,111)	192
Exchange differences on translating foreign operations, Net changes, Net-of-tax	(293,201)	95,568	(204,184)
Share of other comprehensive income of investments accounted for using the equity method, Amount incurred during the year, Net-of-tax	(30,393)	(18,847)	11,745
Share of other comprehensive income of investments accounted for using the equity method, Reclassification to profit or loss, Net-of-tax			(1,125)
Share of other comprehensive income of investments accounted for using the equity method, Net changes, Net-of-tax	(30,393)	(18,847)	10,620
Total other comprehensive income, net of tax	¥ (451,209)	¥ 26,321	¥ (159,244)

Equity - Components of Other Co

Equity - Components of Other Comprehensive Income Included in Non-controlling Interests (Detail) - JPY (¥) ¥ in Millions	12 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2018
Disclosure of analysis of other comprehensive income by item [line items]
Remeasurements of defined benefit plans	¥ (102,983)	¥ (23,745)	¥ 13,344
Net changes in revaluation of financial assets measured at fair value through other comprehensive income	(23,361)	(24,046)	19,288
Exchange differences on translating foreign operations	(293,201)	95,568	(204,184)
Total	(451,209)	26,321	(159,244)
Non-controlling interests [Member]
Disclosure of analysis of other comprehensive income by item [line items]
Remeasurements of defined benefit plans	(753)	(338)	1,534
Net changes in revaluation of financial assets measured at fair value through other comprehensive income	(73)	17	6
Exchange differences on translating foreign operations	(18,924)	(651)	(992)
Total	¥ (19,750)	¥ (972)	¥ 548

Equity - Dividends from Retaine

Equity - Dividends from Retained Earnings (Detail) - JPY (¥) ¥ / shares in Units, ¥ in Millions

May 12, 2020

Feb. 07, 2020

Nov. 08, 2019

Aug. 02, 2019

May 08, 2019

Feb. 01, 2019

Oct. 30, 2018

Jul. 31, 2018

Apr. 27, 2018

Feb. 02, 2018

Nov. 01, 2017

Aug. 01, 2017

Jun. 15, 2017

Dividends 1 [abstract]

Dividend payout, Total amount of dividends (millions of yen)

¥ 48,932

¥ 49,287

¥ 49,287

¥ 49,287

¥ 49,287

¥ 49,287

¥ 47,682

¥ 48,013

¥ 44,456

¥ 43,254

¥ 43,254

¥ 43,254

Dividend payout, Dividend per share (yen)

¥ 28

¥ 28

¥ 28

¥ 28

¥ 28

¥ 28

¥ 27

¥ 27

¥ 25

¥ 24

¥ 24

¥ 24

Dividend payout, Record date

Dec. 31, 2019

Sep. 30, 2019

Jun. 30, 2019

Mar. 31, 2019

Dec. 31, 2018

Sep. 30, 2018

Jun. 30, 2018

Mar. 31, 2018

Dec. 31, 2017

Sep. 30, 2017

Jun. 30, 2017

Mar. 31, 2017

Dividend payout, Effective date

Mar. 4, 2020

Nov. 29, 2019

Aug. 30, 2019

Jun. 3, 2019

Feb. 28, 2019

Nov. 28, 2018

Aug. 28, 2018

May 30, 2018

Feb. 28, 2018

Nov. 29, 2017

Aug. 25, 2017

Jun. 16, 2017

Dividends payable, Total amount of dividends (millions of yen)

¥ 48,363

Dividends payable, Dividend per share (yen)

¥ 28

Dividends payable, Record date

Mar. 31, 2020

Dividends payable, Effective date

Jun. 3, 2020

Sales Revenue - Additional Info

Sales Revenue - Additional Information (Detail) ¥ in Millions	12 Months Ended
	Mar. 31, 2020JPY (¥)Segments	Mar. 31, 2019JPY (¥)Segments
Receivables from contracts with customers: [abstract]
Number of reportable segments | Segments	4	4
Revenue recognized included in the contract liability at the beginning of the year	¥ 186,581	¥ 212,303
Amortization of assets recognised cost	¥ 35,324	¥ 35,057

Sales Revenue - Summary of Reco

Sales Revenue - Summary of Reconciliation of the Disaggregated Sales Revenue with the Four Reportable Segments (Detail) - JPY (¥) ¥ in Millions	12 Months Ended
	Mar. 31, 2020		Mar. 31, 2019		Mar. 31, 2018
Disclosure of disaggregation of revenue from contracts with customers [line items]
Total	¥ 14,931,009		¥ 15,888,617		¥ 15,361,146
External customers [member]
Disclosure of disaggregation of revenue from contracts with customers [line items]
Total	14,931,009		15,888,617		15,361,146
External customers [member] | Japan [member]
Disclosure of disaggregation of revenue from contracts with customers [line items]
Total	2,307,523		2,394,584		2,240,033
Operating segments [member]
Disclosure of disaggregation of revenue from contracts with customers [line items]
Total	15,205,564		16,145,217		15,592,352
Operating segments [member] | Motorcycle business [member]
Disclosure of disaggregation of revenue from contracts with customers [line items]
Total	2,059,335		2,100,155		2,038,712
Operating segments [member] | Automobile business [member]
Disclosure of disaggregation of revenue from contracts with customers [line items]
Total	10,194,638		11,287,764		11,045,209
Operating segments [member] | Financial services business [member]
Disclosure of disaggregation of revenue from contracts with customers [line items]
Total	2,600,937		2,380,042		2,137,265
Operating segments [member] | Life creation and other businesses [member]
Disclosure of disaggregation of revenue from contracts with customers [line items]
Total	350,654		377,256		371,166
Operating segments [member] | External customers [member]
Disclosure of disaggregation of revenue from contracts with customers [line items]
Revenue arising from contracts with customers	13,570,587		14,609,724
Revenue arising from the other sources	1,360,422	[1]	1,278,893	[2]
Total	14,931,009		15,888,617		15,361,146
Operating segments [member] | External customers [member] | Motorcycle business [member]
Disclosure of disaggregation of revenue from contracts with customers [line items]
Revenue arising from contracts with customers	2,049,900		2,097,304
Revenue arising from the other sources	9,435	[1]	2,851	[2]
Total	2,059,335		2,100,155		2,038,712
Operating segments [member] | External customers [member] | Automobile business [member]
Disclosure of disaggregation of revenue from contracts with customers [line items]
Revenue arising from contracts with customers	9,956,024		11,061,180
Revenue arising from the other sources	3,056	[1]	10,937	[2]
Total	9,959,080		11,072,117		10,852,171
Operating segments [member] | External customers [member] | Financial services business [member]
Disclosure of disaggregation of revenue from contracts with customers [line items]
Revenue arising from contracts with customers	1,239,613		1,100,457
Revenue arising from the other sources	1,347,352	[1]	1,264,898	[2]
Total	2,586,965		2,365,355		2,123,194
Operating segments [member] | External customers [member] | Life creation and other businesses [member]
Disclosure of disaggregation of revenue from contracts with customers [line items]
Revenue arising from contracts with customers	325,050		350,783
Revenue arising from the other sources	579	[1]	207	[2]
Total	325,629		350,990		¥ 347,069
Operating segments [member] | External customers [member] | Japan [member]
Disclosure of disaggregation of revenue from contracts with customers [line items]
Revenue arising from contracts with customers	1,757,682		1,843,269
Operating segments [member] | External customers [member] | Japan [member] | Motorcycle business [member]
Disclosure of disaggregation of revenue from contracts with customers [line items]
Revenue arising from contracts with customers	77,241		79,297
Operating segments [member] | External customers [member] | Japan [member] | Automobile business [member]
Disclosure of disaggregation of revenue from contracts with customers [line items]
Revenue arising from contracts with customers	1,473,552		1,590,032
Operating segments [member] | External customers [member] | Japan [member] | Financial services business [member]
Disclosure of disaggregation of revenue from contracts with customers [line items]
Revenue arising from contracts with customers	130,775		86,437
Operating segments [member] | External customers [member] | Japan [member] | Life creation and other businesses [member]
Disclosure of disaggregation of revenue from contracts with customers [line items]
Revenue arising from contracts with customers	76,114		87,503
Operating segments [member] | External customers [member] | North America [member]
Disclosure of disaggregation of revenue from contracts with customers [line items]
Revenue arising from contracts with customers	7,094,537		7,500,406
Operating segments [member] | External customers [member] | North America [member] | Motorcycle business [member]
Disclosure of disaggregation of revenue from contracts with customers [line items]
Revenue arising from contracts with customers	203,822		188,022
Operating segments [member] | External customers [member] | North America [member] | Automobile business [member]
Disclosure of disaggregation of revenue from contracts with customers [line items]
Revenue arising from contracts with customers	5,648,818		6,163,120
Operating segments [member] | External customers [member] | North America [member] | Financial services business [member]
Disclosure of disaggregation of revenue from contracts with customers [line items]
Revenue arising from contracts with customers	1,108,827		1,013,987
Operating segments [member] | External customers [member] | North America [member] | Life creation and other businesses [member]
Disclosure of disaggregation of revenue from contracts with customers [line items]
Revenue arising from contracts with customers	133,070		135,277
Operating segments [member] | External customers [member] | Europe [member]
Disclosure of disaggregation of revenue from contracts with customers [line items]
Revenue arising from contracts with customers	556,791		647,985
Operating segments [member] | External customers [member] | Europe [member] | Motorcycle business [member]
Disclosure of disaggregation of revenue from contracts with customers [line items]
Revenue arising from contracts with customers	144,392		159,645
Operating segments [member] | External customers [member] | Europe [member] | Automobile business [member]
Disclosure of disaggregation of revenue from contracts with customers [line items]
Revenue arising from contracts with customers	359,166		427,347
Operating segments [member] | External customers [member] | Europe [member] | Financial services business [member]
Disclosure of disaggregation of revenue from contracts with customers [line items]
Revenue arising from contracts with customers
Operating segments [member] | External customers [member] | Europe [member] | Life creation and other businesses [member]
Disclosure of disaggregation of revenue from contracts with customers [line items]
Revenue arising from contracts with customers	53,233		60,993
Operating segments [member] | External customers [member] | Asia [member]
Disclosure of disaggregation of revenue from contracts with customers [line items]
Revenue arising from contracts with customers	3,424,384		3,778,575
Operating segments [member] | External customers [member] | Asia [member] | Motorcycle business [member]
Disclosure of disaggregation of revenue from contracts with customers [line items]
Revenue arising from contracts with customers	1,329,352		1,372,583
Operating segments [member] | External customers [member] | Asia [member] | Automobile business [member]
Disclosure of disaggregation of revenue from contracts with customers [line items]
Revenue arising from contracts with customers	2,048,588		2,359,557
Operating segments [member] | External customers [member] | Asia [member] | Financial services business [member]
Disclosure of disaggregation of revenue from contracts with customers [line items]
Revenue arising from contracts with customers	11		33
Operating segments [member] | External customers [member] | Asia [member] | Life creation and other businesses [member]
Disclosure of disaggregation of revenue from contracts with customers [line items]
Revenue arising from contracts with customers	46,433		46,402
Operating segments [member] | External customers [member] | Other regions [member]
Disclosure of disaggregation of revenue from contracts with customers [line items]
Revenue arising from contracts with customers	737,193		839,489
Operating segments [member] | External customers [member] | Other regions [member] | Motorcycle business [member]
Disclosure of disaggregation of revenue from contracts with customers [line items]
Revenue arising from contracts with customers	295,093		297,757
Operating segments [member] | External customers [member] | Other regions [member] | Automobile business [member]
Disclosure of disaggregation of revenue from contracts with customers [line items]
Revenue arising from contracts with customers	425,900		521,124
Operating segments [member] | External customers [member] | Other regions [member] | Financial services business [member]
Disclosure of disaggregation of revenue from contracts with customers [line items]
Revenue arising from contracts with customers
Operating segments [member] | External customers [member] | Other regions [member] | Life creation and other businesses [member]
Disclosure of disaggregation of revenue from contracts with customers [line items]
Revenue arising from contracts with customers	¥ 16,200		¥ 20,608
[1]	Revenue arising from the other sources primarily includes lease revenues recognized under IFRS 16 and interest recognized under IFRS 9.
[2]	Revenue arising from the other sources primarily includes lease revenues recognized under IAS 17 and interest recognized under IFRS 9.

Sales Revenue - Summary of Info

Sales Revenue - Summary of Information Regarding Receivables from Contracts with Customers and Contract Liabilities (Detail) - JPY (¥) ¥ in Millions	Mar. 31, 2020	Mar. 31, 2019
Receivables from contracts with customers: [abstract]
Trade receivables	¥ 516,705	¥ 707,337
Contract liabilities:
Other current liabilities	221,959	214,888
Other noncurrent liabilities	¥ 167,076	¥ 165,722

Sales Revenue - Summary of Reve

Sales Revenue - Summary of Revenue Expected to be Recognized in the Future Related to Performance Obligations that are Unsatisfied (or Partially Unsatisfied) (Detail) - JPY (¥) ¥ in Millions	Mar. 31, 2020	Mar. 31, 2019
Disclosure of disaggregation of revenue from contracts with customers [line items]
Total	¥ 310,530	¥ 301,981
Within 1 year [member]
Disclosure of disaggregation of revenue from contracts with customers [line items]
Total	106,745	103,734
Between 1 and 5 years [member]
Disclosure of disaggregation of revenue from contracts with customers [line items]
Total	201,925	185,456
Later than 5 years [member]
Disclosure of disaggregation of revenue from contracts with customers [line items]
Total	¥ 1,860	¥ 12,791

Sales Revenue - Summary of Asse

Sales Revenue - Summary of Assets Recognized Costs Obtain a Contract With Customer (Detail) - JPY (¥) ¥ in Millions	Mar. 31, 2020	Mar. 31, 2019
Disclosure - Sales Revenue - Summary of Assets Recognized Costs Obtain a Contract With Customer [Abstract]
Assets recognized from the costs to obtain a contract with a customer	¥ 100,751	¥ 105,471

Research and Development - Summ

Research and Development - Summary of Research and Development Costs (Detail) - JPY (¥) ¥ in Millions	12 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2018
Material income and expense [abstract]
Research and development expenditures incurred during the reporting period	¥ 821,478	¥ 820,037	¥ 730,734
Amount capitalized	(192,397)	(161,232)	(132,800)
Amortization and impairment losses of capitalized development costs	175,042	148,100	153,922
Total	¥ 804,123	¥ 806,905	¥ 751,856

Finance Income and Finance Co_3

Finance Income and Finance Costs - Summary of Finance Income and Finance Costs (Detail) - JPY (¥) ¥ in Millions	12 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2018
Interest income:
Financial assets measured at amortized cost	¥ 47,679	¥ 46,862	¥ 39,645
Financial assets measured at fair value through other comprehensive income	249	323
Financial assets measured at fair value through profit or loss	1,484	1,433	1,546
Total	49,412	48,618	41,191
Interest expense:
Financial liabilities measured at amortized cost	(15,624)	(13,217)	(12,970)
Other	(9,065)
Total	(24,689)	(13,217)	(12,970)
Dividends, received:
Financial assets measured at fair value through other comprehensive income	5,169	5,056	4,708
Financial assets measured at fair value through profit or loss	25	21	15
Gains (losses) on derivatives:
Financial assets and financial liabilities measured at fair value through profit or loss	(19,270)	(54,897)	67,132
Gains (losses) on foreign exchange	(24,942)	31,266	(69,197)
Other	6,373	7,331	2,893
Total	(32,645)	(11,223)	5,551
Total finance income and finance costs	¥ (7,922)	¥ 24,178	¥ 33,772

Income Taxes - Profit Before In

Income Taxes - Profit Before Income Taxes and Income Tax Expense (Detail) - JPY (¥) ¥ in Millions	12 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2018
Disclosure of income taxes [Line Items]
Profit (loss) before income taxes	¥ 789,918	¥ 979,375	¥ 1,114,973
Income tax expense (benefit):
Current taxes	244,606	216,765	277,360
Deferred taxes	35,380	86,324	(291,026)
Total	279,986	303,089	(13,666)
Japan [member]
Disclosure of income taxes [Line Items]
Profit (loss) before income taxes	(63,390)	70,805	126,915
Income tax expense (benefit):
Current taxes	11,036	32,937	(2,956)
Deferred taxes	17,470	58,121	25,149
Total	28,506	91,058	22,193
Foreign [member]
Disclosure of income taxes [Line Items]
Profit (loss) before income taxes	853,308	908,570	988,058
Income tax expense (benefit):
Current taxes	233,570	183,828	280,316
Deferred taxes	17,910	28,203	(316,175)
Total	¥ 251,480	¥ 212,031	¥ (35,859)

Income Taxes - Additional Infor

Income Taxes - Additional Information (Detail) - JPY (¥) ¥ in Millions	12 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2018
Disclosure of income taxes [Line Items]
Deferred tax assets written down		¥ 50,322
Statutory income tax rate	30.20%	30.20%	30.40%
Deferred tax assets recognized by entities that have suffered a loss in either the preceding or current period	¥ 56,912	¥ 57,410
Aggregate amounts of temporary differences relating to investments in subsidiaries and interests in joint ventures for which deferred tax liabilities are not recognized	¥ 4,718,298	¥ 4,908,449
Japan [member]
Disclosure of income taxes [Line Items]
Statutory income tax rate	30.20%	30.20%	30.40%
Foreign [member] | Bottom of range [member]
Disclosure of income taxes [Line Items]
Statutory income tax rate	16.00%
Foreign [member] | Top of range [member]
Disclosure of income taxes [Line Items]
Statutory income tax rate	35.00%

Income Taxes - Reconciliation o

Income Taxes - Reconciliation of Statutory Income Tax Rate to Average Effective Tax Rate (Detail)		12 Months Ended
		Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2018
Reconciliation of average effective tax rate and applicable tax rate [abstract]
Statutory income tax rate		30.20%	30.20%	30.40%
Difference in statutory income tax rates of foreign subsidiaries		(3.90%)	(4.30%)	(1.10%)
Effects of investments accounted for using the equity method		(6.20%)	(7.10%)	(6.70%)
Effects of undistributed earnings and withholding taxes on royalty		8.60%	7.70%	7.00%
Changes in unrecognized deferred tax assets		7.80%	8.30%	(0.20%)
Effects of income and expense not taxable and deductible for tax purpose		0.80%	0.20%	0.10%
Effects of tax credit		(3.00%)	(3.20%)	(2.10%)
Other adjustments relating to prior years		(0.70%)	(0.10%)	0.30%
Adjustments for the uncertain tax treatments on income taxes		0.20%	0.80%	0.70%
Adjustments for the changes in income tax laws	[1]	2.30%	(2.50%)	(30.10%)
Other		(0.70%)	0.90%	0.50%
Average effective tax rate		35.40%	30.90%	(1.20%)
[1]	The Tax Cuts and Jobs Act (“the Act”) was enacted in the United States on December 22, 2017. Due to the Act, the federal corporate income tax rate in the United States applicable to the Company’s United States businesses was reduced from 35% to a blended rate of 31.55% for the fiscal year ended March 31, 2018 and to 21% from the fiscal year commencing on April 1, 2018. The Company recognized impacts of the enactment of the Act, including a decrease in income tax expenses of ¥346,129 million, as a result of reevaluating deferred tax assets and liabilities in its consolidated subsidiaries in the United States based on the reduced federal corporate income tax rate, for the fiscal year ended March 31, 2018.

Income Taxes - Reconciliation_2

Income Taxes - Reconciliation of Statutory Income Tax Rate to Average Effective Tax Rate (Parenthetical) (Detail) - JPY (¥) ¥ in Millions	12 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2018
Disclosure of income taxes [Line Items]
Applicable tax rate	30.20%	30.20%	30.40%
Average effective tax rate	35.40%	30.90%	(1.20%)
United States [member]
Disclosure of income taxes [Line Items]
Applicable tax rate		21.00%	35.00%
Average effective tax rate			31.55%
Decrease in income tax expenses			¥ 346,129

Income Taxes - Components by Ma

Income Taxes - Components by Major Factor in Deferred Tax Assets and Deferred Tax Liabilities (Detail) - JPY (¥) ¥ in Millions	Mar. 31, 2020	Mar. 31, 2019
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Deferred tax assets	¥ 132,553	¥ 150,318
Deferred tax liabilities	698,868	727,411
Gross carrying amount [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Deferred tax assets	564,084	575,299
Deferred tax liabilities	1,130,399	1,152,392
Net deferred tax assets (liabilities)	(566,315)	(577,093)
Gross carrying amount [member] | Inventories [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Deferred tax assets	29,899	39,044
Gross carrying amount [member] | Accrued expenses [Member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Deferred tax assets	66,115	75,378
Gross carrying amount [member] | Provisions [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Deferred tax assets	75,858	101,780
Gross carrying amount [member] | Property, plant and equipment [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Deferred tax assets	18,936	18,462
Deferred tax liabilities	76,126	81,472
Gross carrying amount [member] | Intangible assets [Member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Deferred tax assets	18,198	22,776
Deferred tax liabilities	183,985	180,607
Gross carrying amount [member] | Retirement benefit liabilities [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Deferred tax assets	138,735	95,324
Gross carrying amount [member] | Carryforward of unused tax losses [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Deferred tax assets	58,023	54,817
Gross carrying amount [member] | Carryforward of unused tax credit [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Deferred tax assets	50,472	43,130
Gross carrying amount [member] | Other [Member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Deferred tax assets	107,848	124,588
Gross carrying amount [member] | Other financial assets [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Deferred tax liabilities	5,468	21,720
Gross carrying amount [member] | Finance leases [Member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Deferred tax liabilities	40,892	41,050
Gross carrying amount [member] | Operating leases [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Deferred tax liabilities	701,303	718,981
Gross carrying amount [member] | Undistributed earnings [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Deferred tax liabilities	56,136	58,112
Gross carrying amount [member] | Other [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Deferred tax liabilities	¥ 66,489	¥ 50,450

Income Taxes - Changes in Defer

Income Taxes - Changes in Deferred Tax Assets and Deferred Tax Liabilities Recognized as Income Tax Expense in the Consolidated Statements of Income (Detail) - JPY (¥) ¥ in Millions	12 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2018
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Deferred tax assets and deferred tax liabilities recognized as income tax expense	¥ 35,380	¥ 86,324	¥ (291,026)
Inventories [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Deferred tax assets and deferred tax liabilities recognized as income tax expense	8,738	28,022	5,541
Provisions [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Deferred tax assets and deferred tax liabilities recognized as income tax expense	22,185	20,711	45,492
Property, plant and equipment [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Deferred tax assets and deferred tax liabilities recognized as income tax expense	(3,503)	(499)	(27,520)
Retirement benefit liabilities [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Deferred tax assets and deferred tax liabilities recognized as income tax expense	(5,597)	3,237	(623)
Operating leases [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Deferred tax assets and deferred tax liabilities recognized as income tax expense	(3,697)	49,142	(328,950)
Undistributed earnings [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Deferred tax assets and deferred tax liabilities recognized as income tax expense	(1,059)	215	12,655
Carryforward of unused tax losses [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Deferred tax assets and deferred tax liabilities recognized as income tax expense	(6,378)	(19,335)	9,226
Carryforward of unused tax credit [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Deferred tax assets and deferred tax liabilities recognized as income tax expense	(8,423)	(8,038)	(10,300)
Other [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Deferred tax assets and deferred tax liabilities recognized as income tax expense	¥ 33,114	¥ 12,869	¥ 3,453

Income Taxes - Deductible Tempo

Income Taxes - Deductible Temporary Differences, Carryforward of Unused Tax Losses and Unused Tax Credit for which Deferred Tax Assets are not Recognized (Detail) - JPY (¥) ¥ in Millions	Mar. 31, 2020	Mar. 31, 2019
Disclosure of temporary difference, unused tax losses and unused tax credits [abstract]
Deductible temporary differences	¥ 665,917	¥ 560,738
Carryforward of unused tax losses	391,272	261,294
Carryforward of unused tax credit	¥ 1,242	¥ 3,850

Income Taxes - Components by Ex

Income Taxes - Components by Expiry of the Carryforward of Unused Tax Losses for which Deferred Tax Assets are not Recognized (Detail) - JPY (¥) ¥ in Millions	Mar. 31, 2020	Mar. 31, 2019
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Unused tax losses	¥ 391,272	¥ 261,294
Within 1 year [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Unused tax losses	28,613	8,759
Between 1 and 5 years [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Unused tax losses	59,027	67,352
Between 5 and 20 years [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Unused tax losses	164,371	101,953
Indefinite periods [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Unused tax losses	¥ 139,261	¥ 83,230

Income Taxes - Components by _2

Income Taxes - Components by Expiry of Carryforward of Unused Tax Credits for which Deferred Tax Assets are not Recognized (Detail) - JPY (¥) ¥ in Millions	Mar. 31, 2020	Mar. 31, 2019
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Unused tax credit	¥ 1,242	¥ 3,850
Within 1 year [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Unused tax credit	343	570
Between 1 and 5 years [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Unused tax credit	672	1,422
Between 5 and 20 years [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Unused tax credit	227	1,858
Indefinite periods [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Unused tax credit

Earning Per Share - Summary of

Earning Per Share - Summary of Earnings Per Share (Detail) - JPY (¥) ¥ / shares in Units, ¥ in Millions	12 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2018
Earnings per share [abstract]
Profit for the year attributable to owners of the parent	¥ 455,746	¥ 610,316	¥ 1,059,337
Weighted average number of common shares outstanding, basic	1,752,006,211	1,763,983,221	1,793,088,970
Basic earnings per share attributable to owners of the parent	¥ 260.13	¥ 345.99	¥ 590.79

Financial Risk Management - Add

Financial Risk Management - Additional Information (Detail) - JPY (¥)	Mar. 31, 2020	Mar. 31, 2019
Disclosure of nature and extent of risks arising from financial instruments [line items]
Amount accrued for estimated losses	¥ 0
Undiscounted maximum amount of payment for guarantee obligations	63,655,000,000	¥ 57,441,000,000
Guarantee of employee loans [member]
Disclosure of nature and extent of risks arising from financial instruments [line items]
Undiscounted maximum amount of payment for guarantee obligations	¥ 10,100,000,000	¥ 11,953,000,000
Consumer finance receivables [member]
Disclosure of nature and extent of risks arising from financial instruments [line items]
Collateral values in excess for percentage of carrying amounts	60.00%	60.00%
Dealer finance receivable [member]
Disclosure of nature and extent of risks arising from financial instruments [line items]
Collateral values in excess for percentage of carrying amounts	60.00%	90.00%
Percentage of appreciation of the Japanese yen against the U.S. dollar [member]
Disclosure of nature and extent of risks arising from financial instruments [line items]
Sensitivity analysis, percentage	1.00%	1.00%
Interest rate risk [member]
Disclosure of nature and extent of risks arising from financial instruments [line items]
Sensitivity analysis, percentage	1.00%	1.00%

Financial Risk Management - For

Financial Risk Management - Foreign Currency Exchange Rate Risk Sensitivity Analysis (Detail) - JPY (¥) ¥ in Millions	Mar. 31, 2020	Mar. 31, 2019
Percentage of appreciation of the Japanese yen against the U.S. dollar [member]
Disclosure of nature and extent of risks arising from financial instruments [line items]
Impact on profit before income taxes	¥ (828)	¥ (777)

Financial Risk Management - Int

Financial Risk Management - Interest Rate Risk Sensitivity Analysis (Detail) - JPY (¥) ¥ in Millions	Mar. 31, 2020	Mar. 31, 2019
Interest rate risk [member]
Disclosure of nature and extent of risks arising from financial instruments [line items]
Impact on profit before income taxes	¥ (4,861)	¥ (1,915)

Financial Risk Management - Ana

Financial Risk Management - Analysis of the Age of Receivables from Financial Services that are Past Due (Detail) - JPY (¥) ¥ in Millions		Mar. 31, 2020	Mar. 31, 2019
Disclosure of financial assets that are either past due or impaired [line items]
Receivables from financial services		¥ 5,161,165	¥ 5,405,250
Retail [member]
Disclosure of financial assets that are either past due or impaired [line items]
Receivables from financial services	[1]	4,440,364	4,602,848
Wholesale [member]
Disclosure of financial assets that are either past due or impaired [line items]
Receivables from financial services		666,992	712,214
Financial assets past due [member]
Disclosure of financial assets that are either past due or impaired [line items]
Receivables from financial services		278,588	287,370
Financial assets past due [member] | Less than 30 days [member]
Disclosure of financial assets that are either past due or impaired [line items]
Receivables from financial services		216,371	226,333
Financial assets past due [member] | 30-59 days past due [member]
Disclosure of financial assets that are either past due or impaired [line items]
Receivables from financial services		45,147	43,221
Financial assets past due [member] | 60-89 days past due [member]
Disclosure of financial assets that are either past due or impaired [line items]
Receivables from financial services		10,025	7,690
Financial assets past due [member] | 90 days and greater past due [member]
Disclosure of financial assets that are either past due or impaired [line items]
Receivables from financial services		7,045	10,126
Financial assets past due [member] | Retail [member]
Disclosure of financial assets that are either past due or impaired [line items]
Receivables from financial services		254,352	253,823
Financial assets past due [member] | Retail [member] | Less than 30 days [member]
Disclosure of financial assets that are either past due or impaired [line items]
Receivables from financial services		199,260	204,475
Financial assets past due [member] | Retail [member] | 30-59 days past due [member]
Disclosure of financial assets that are either past due or impaired [line items]
Receivables from financial services		38,862	35,706
Financial assets past due [member] | Retail [member] | 60-89 days past due [member]
Disclosure of financial assets that are either past due or impaired [line items]
Receivables from financial services		9,621	7,572
Financial assets past due [member] | Retail [member] | 90 days and greater past due [member]
Disclosure of financial assets that are either past due or impaired [line items]
Receivables from financial services		6,609	6,070
Financial assets past due [member] | Finance lease [member]
Disclosure of financial assets that are either past due or impaired [line items]
Receivables from financial services		472	681
Financial assets past due [member] | Finance lease [member] | Less than 30 days [member]
Disclosure of financial assets that are either past due or impaired [line items]
Receivables from financial services		152	349
Financial assets past due [member] | Finance lease [member] | 30-59 days past due [member]
Disclosure of financial assets that are either past due or impaired [line items]
Receivables from financial services		31	108
Financial assets past due [member] | Finance lease [member] | 60-89 days past due [member]
Disclosure of financial assets that are either past due or impaired [line items]
Receivables from financial services		9	26
Financial assets past due [member] | Finance lease [member] | 90 days and greater past due [member]
Disclosure of financial assets that are either past due or impaired [line items]
Receivables from financial services		280	198
Financial assets past due [member] | Wholesale [member]
Disclosure of financial assets that are either past due or impaired [line items]
Receivables from financial services		23,764	32,866
Financial assets past due [member] | Wholesale [member] | Less than 30 days [member]
Disclosure of financial assets that are either past due or impaired [line items]
Receivables from financial services		16,959	21,509
Financial assets past due [member] | Wholesale [member] | 30-59 days past due [member]
Disclosure of financial assets that are either past due or impaired [line items]
Receivables from financial services		6,254	7,407
Financial assets past due [member] | Wholesale [member] | 60-89 days past due [member]
Disclosure of financial assets that are either past due or impaired [line items]
Receivables from financial services		395	92
Financial assets past due [member] | Wholesale [member] | 90 days and greater past due [member]
Disclosure of financial assets that are either past due or impaired [line items]
Receivables from financial services		¥ 156	¥ 3,858
[1]	The tables above represent the gross amounts of retail receivables by stages of ECL model since the expected credit losses are measured collectively by our finance subsidiaries and the balances of those receivables are not directly allocated to the risk ratings.

Financial Risk Management - Sum

Financial Risk Management - Summary of Retail Receivables Included In Consumer Finance Receivables (Detail) - JPY (¥) ¥ in Millions		Mar. 31, 2020	Mar. 31, 2019
Disclosure Of Finance Receivables [Line Items]
Consumer finance receivables		¥ 5,161,165	¥ 5,405,250
Retail [member]
Disclosure Of Finance Receivables [Line Items]
Consumer finance receivables	[1]	4,440,364	4,602,848
12-month expected credit losses [member] | Retail [member]
Disclosure Of Finance Receivables [Line Items]
Consumer finance receivables	[1]	2,969,699	3,893,725
Not credit impaired [member] | Lifetime expected credit losses [member] | Retail [member]
Disclosure Of Finance Receivables [Line Items]
Consumer finance receivables	[1]	1,450,663	691,401
Credit impaired [member] | Lifetime expected credit losses [member] | Retail [member]
Disclosure Of Finance Receivables [Line Items]
Consumer finance receivables	[1]	¥ 20,002	¥ 17,722
[1]	The tables above represent the gross amounts of retail receivables by stages of ECL model since the expected credit losses are measured collectively by our finance subsidiaries and the balances of those receivables are not directly allocated to the risk ratings.

Financial Risk Management - Dea

Financial Risk Management - Dealer Finance Receivables and Undiscounted Maximum Amounts of Potential Payment for Loan Commitments (Detail) - JPY (¥) ¥ in Millions	Mar. 31, 2020	Mar. 31, 2019
Dealer finance receivables:
Dealer finance receivables	¥ 5,161,165	¥ 5,405,250
Loan commitments:
Loan commitments	63,655	57,441
Group A [member]
Dealer finance receivables:
Dealer finance receivables	437,708	479,101
Loan commitments:
Loan commitments	43,823	46,962
Group B [member]
Dealer finance receivables:
Dealer finance receivables	229,284	233,113
Loan commitments:
Loan commitments	19,832	10,479
Wholesale [member]
Dealer finance receivables:
Dealer finance receivables	666,992	712,214
12-month expected credit losses [member]
Loan commitments:
Loan commitments	63,655	57,441
12-month expected credit losses [member] | Group A [member]
Dealer finance receivables:
Dealer finance receivables	414,323	469,877
Loan commitments:
Loan commitments	43,823	46,962
12-month expected credit losses [member] | Group B [member]
Dealer finance receivables:
Dealer finance receivables	217,741	202,993
Loan commitments:
Loan commitments	19,832	10,479
12-month expected credit losses [member] | Wholesale [member]
Dealer finance receivables:
Dealer finance receivables	632,064	672,870
Lifetime expected credit losses [member] | Not credit impaired [member]
Loan commitments:
Loan commitments
Lifetime expected credit losses [member] | Not credit impaired [member] | Group A [member]
Dealer finance receivables:
Dealer finance receivables	23,308	9,224
Loan commitments:
Loan commitments
Lifetime expected credit losses [member] | Not credit impaired [member] | Group B [member]
Dealer finance receivables:
Dealer finance receivables	9,900	13,223
Loan commitments:
Loan commitments
Lifetime expected credit losses [member] | Not credit impaired [member] | Wholesale [member]
Dealer finance receivables:
Dealer finance receivables	33,208	22,447
Lifetime expected credit losses [member] | Credit impaired [member]
Loan commitments:
Loan commitments
Lifetime expected credit losses [member] | Credit impaired [member] | Group A [member]
Dealer finance receivables:
Dealer finance receivables
Loan commitments:
Loan commitments
Lifetime expected credit losses [member] | Credit impaired [member] | Group B [member]
Dealer finance receivables:
Dealer finance receivables	1,643	16,897
Loan commitments:
Loan commitments
Lifetime expected credit losses [member] | Credit impaired [member] | Wholesale [member]
Dealer finance receivables:
Dealer finance receivables	¥ 1,720	¥ 16,897

Financial Risk Management - Unu

Financial Risk Management - Unused Portions of the Credit Facility (Detail) - JPY (¥) ¥ in Millions	Mar. 31, 2020	Mar. 31, 2019
Commercial paper [member]
Disclosure of unused portion of borrowing facility [line items]
Unused portions of the credit facility	¥ 481,352	¥ 602,243
Medium-term notes [member]
Disclosure of unused portion of borrowing facility [line items]
Unused portions of the credit facility	2,791,490	1,229,911
Credit facility [member]
Disclosure of unused portion of borrowing facility [line items]
Unused portions of the credit facility	¥ 3,272,842	¥ 1,832,154

Financial Risk Management - U_2

Financial Risk Management - Unused Portions of the Committed Lines of Credit (Detail) - JPY (¥) ¥ in Millions	Mar. 31, 2020	Mar. 31, 2019
Commercial paper programs [member]
Disclosure of unused portion of borrowing facility [line items]
Unused portions of the committed lines of credit	¥ 1,084,917	¥ 1,080,503
Other committed lines of credit [member]
Disclosure of unused portion of borrowing facility [line items]
Unused portions of the committed lines of credit	63,484	58,199
Committed lines of credit [member]
Disclosure of unused portion of borrowing facility [line items]
Unused portions of the committed lines of credit	¥ 1,148,401	¥ 1,138,702

Financial Risk Management - Non

Financial Risk Management - Non-derivative Financial Liabilities by Maturity (Detail) - JPY (¥) ¥ in Millions	Mar. 31, 2020	Mar. 31, 2019
Disclosure of maturity analysis for non-derivative financial liabilities [line items]
Trade payables, carrying amount	¥ 958,469	¥ 1,184,882
Financing liabilities, carrying amount	7,469,686	7,331,120
Accrued expenses, carrying amount	449,716	476,300
Other financial liabilities, carrying amount	397,467	127,108
Non-derivative financial liabilities, carrying amount	9,275,338	9,119,410
Trade payables, contractual cash flows	958,468	1,184,882
Financing liabilities, contractual cash flows	7,593,927	7,650,429
Accrued expenses, contractual cash flows	449,716	476,300
Other financial liabilities, contractual cash flows	417,476	127,271
Non-derivative financial liabilities, contractual cash flows	9,419,587	9,438,882
Within 1 year [member]
Disclosure of maturity analysis for non-derivative financial liabilities [line items]
Trade payables, contractual cash flows	958,468	1,184,882
Financing liabilities, contractual cash flows	3,341,226	3,321,576
Accrued expenses, contractual cash flows	449,716	476,300
Other financial liabilities, contractual cash flows	88,629	66,240
Non-derivative financial liabilities, contractual cash flows	4,838,039	5,048,998
Between 1 and 5 years [member]
Disclosure of maturity analysis for non-derivative financial liabilities [line items]
Trade payables, contractual cash flows
Financing liabilities, contractual cash flows	3,964,660	4,089,215
Accrued expenses, contractual cash flows
Other financial liabilities, contractual cash flows	98,285	29,615
Non-derivative financial liabilities, contractual cash flows	4,062,945	4,118,830
Later than 5 years [member]
Disclosure of maturity analysis for non-derivative financial liabilities [line items]
Trade payables, contractual cash flows
Financing liabilities, contractual cash flows	288,041	239,638
Accrued expenses, contractual cash flows
Other financial liabilities, contractual cash flows	230,562	31,416
Non-derivative financial liabilities, contractual cash flows	¥ 518,603	¥ 271,054

Financial Risk Management - S_2

Financial Risk Management - Summary of Lease liabilities by maturity (Detail) - JPY (¥) ¥ in Millions	Mar. 31, 2020	Apr. 01, 2019	Mar. 31, 2019
Disclosure Of Lease Liabilities By Maturity [Line Items]
Lease liabilities	¥ 330,040	¥ 334,540	¥ 115,634
Total contractual cash flows	350,048
Within 1 year [member]
Disclosure Of Lease Liabilities By Maturity [Line Items]
Total contractual cash flows	55,486
Between 1 and 5 years [member]
Disclosure Of Lease Liabilities By Maturity [Line Items]
Total contractual cash flows	90,999
Later than 5 years [member]
Disclosure Of Lease Liabilities By Maturity [Line Items]
Total contractual cash flows	¥ 203,563

Financial Risk Management - Der

Financial Risk Management - Derivative Financial Liabilities by Maturity (Detail) - JPY (¥) ¥ in Millions	Mar. 31, 2020	Mar. 31, 2019
Disclosure of maturity analysis for derivative financial liabilities [line items]
Derivative financial liabilities, contractual cash flows	¥ 121,683	¥ 92,640
Within 1 year [member]
Disclosure of maturity analysis for derivative financial liabilities [line items]
Derivative financial liabilities, contractual cash flows	51,697	41,518
Between 1 and 5 years [member]
Disclosure of maturity analysis for derivative financial liabilities [line items]
Derivative financial liabilities, contractual cash flows	69,621	49,513
Later than 5 years [member]
Disclosure of maturity analysis for derivative financial liabilities [line items]
Derivative financial liabilities, contractual cash flows	¥ 365	¥ 1,609

Fair Value - Additional Informa

Fair Value - Additional Information (Detail) - JPY (¥)	12 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Disclosure of fair value measurement of assets [abstract]
Percentage of auction rate securities guaranteed by government	95.00%
Transfers out of Level 1 into Level 2 of fair value hierarchy	¥ 0	¥ 0
Transfers out of Level 2 into Level 1 of fair value hierarchy	¥ 0	¥ 0

Fair Value - Assets and Liabili

Fair Value - Assets and Liabilities Measured at Fair Value on a Recurring Basis (Detail) - JPY (¥) ¥ in Millions	Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2018
Disclosures of fair value of financial assets and financial liabilities at amortized cost [Line items]
Other financial assets	¥ 631,777	¥ 580,423
Other financial liabilities	512,635	196,599
Debt securities [member]
Disclosures of fair value of financial assets and financial liabilities at amortized cost [Line items]
Other financial assets	62,204	54,964
Measured at fair value on a recurring basis [member]
Disclosures of fair value of financial assets and financial liabilities at amortized cost [Line items]
Other financial assets	341,222	322,007
Other financial liabilities	115,168	69,491
Measured at fair value on a recurring basis [member] | Financial liabilities measured at fair value through profit or loss [member] | Foreign exchange instruments [member]
Disclosures of fair value of financial assets and financial liabilities at amortized cost [Line items]
Other financial liabilities	24,834	35,449
Measured at fair value on a recurring basis [member] | Financial liabilities measured at fair value through profit or loss [member] | Interest rate instruments [member]
Disclosures of fair value of financial assets and financial liabilities at amortized cost [Line items]
Other financial liabilities	90,334	34,042
Measured at fair value on a recurring basis [member] | Financial liabilities measured at fair value through profit or loss [member] | Derivatives [member]
Disclosures of fair value of financial assets and financial liabilities at amortized cost [Line items]
Other financial liabilities	115,168	69,491
Measured at fair value on a recurring basis [member] | Financial assets measured at fair value through profit or loss [member] | Foreign exchange instruments [member]
Disclosures of fair value of financial assets and financial liabilities at amortized cost [Line items]
Other financial assets	19,215	12,233
Measured at fair value on a recurring basis [member] | Financial assets measured at fair value through profit or loss [member] | Interest rate instruments [member]
Disclosures of fair value of financial assets and financial liabilities at amortized cost [Line items]
Other financial assets	76,589	34,164
Measured at fair value on a recurring basis [member] | Financial assets measured at fair value through profit or loss [member] | Derivatives [member]
Disclosures of fair value of financial assets and financial liabilities at amortized cost [Line items]
Other financial assets	95,804	46,397
Measured at fair value on a recurring basis [member] | Financial assets measured at fair value through profit or loss [member] | Debt securities [member]
Disclosures of fair value of financial assets and financial liabilities at amortized cost [Line items]
Other financial assets	58,348	58,080
Measured at fair value on a recurring basis [member] | Financial assets measured at fair value through other comprehensive income [member] | Debt securities [member]
Disclosures of fair value of financial assets and financial liabilities at amortized cost [Line items]
Other financial assets	9,069	10,495
Measured at fair value on a recurring basis [member] | Financial assets measured at fair value through other comprehensive income [member] | Equity securities [member]
Disclosures of fair value of financial assets and financial liabilities at amortized cost [Line items]
Other financial assets	178,001	207,035
Measured at fair value on a recurring basis [member] | Level 1 [member]
Disclosures of fair value of financial assets and financial liabilities at amortized cost [Line items]
Other financial assets	96,668	129,969
Other financial liabilities
Measured at fair value on a recurring basis [member] | Level 1 [member] | Financial liabilities measured at fair value through profit or loss [member] | Foreign exchange instruments [member]
Disclosures of fair value of financial assets and financial liabilities at amortized cost [Line items]
Other financial liabilities
Measured at fair value on a recurring basis [member] | Level 1 [member] | Financial liabilities measured at fair value through profit or loss [member] | Interest rate instruments [member]
Disclosures of fair value of financial assets and financial liabilities at amortized cost [Line items]
Other financial liabilities
Measured at fair value on a recurring basis [member] | Level 1 [member] | Financial liabilities measured at fair value through profit or loss [member] | Derivatives [member]
Disclosures of fair value of financial assets and financial liabilities at amortized cost [Line items]
Other financial liabilities
Measured at fair value on a recurring basis [member] | Level 1 [member] | Financial assets measured at fair value through profit or loss [member] | Foreign exchange instruments [member]
Disclosures of fair value of financial assets and financial liabilities at amortized cost [Line items]
Other financial assets
Measured at fair value on a recurring basis [member] | Level 1 [member] | Financial assets measured at fair value through profit or loss [member] | Interest rate instruments [member]
Disclosures of fair value of financial assets and financial liabilities at amortized cost [Line items]
Other financial assets
Measured at fair value on a recurring basis [member] | Level 1 [member] | Financial assets measured at fair value through profit or loss [member] | Derivatives [member]
Disclosures of fair value of financial assets and financial liabilities at amortized cost [Line items]
Other financial assets
Measured at fair value on a recurring basis [member] | Level 1 [member] | Financial assets measured at fair value through profit or loss [member] | Debt securities [member]
Disclosures of fair value of financial assets and financial liabilities at amortized cost [Line items]
Other financial assets	18,175	21,090
Measured at fair value on a recurring basis [member] | Level 1 [member] | Financial assets measured at fair value through other comprehensive income [member] | Debt securities [member]
Disclosures of fair value of financial assets and financial liabilities at amortized cost [Line items]
Other financial assets
Measured at fair value on a recurring basis [member] | Level 1 [member] | Financial assets measured at fair value through other comprehensive income [member] | Equity securities [member]
Disclosures of fair value of financial assets and financial liabilities at amortized cost [Line items]
Other financial assets	78,493	108,879
Measured at fair value on a recurring basis [member] | Level 2 [member]
Disclosures of fair value of financial assets and financial liabilities at amortized cost [Line items]
Other financial assets	139,822	88,443
Other financial liabilities	115,168	69,491
Measured at fair value on a recurring basis [member] | Level 2 [member] | Financial liabilities measured at fair value through profit or loss [member] | Foreign exchange instruments [member]
Disclosures of fair value of financial assets and financial liabilities at amortized cost [Line items]
Other financial liabilities	24,834	35,449
Measured at fair value on a recurring basis [member] | Level 2 [member] | Financial liabilities measured at fair value through profit or loss [member] | Interest rate instruments [member]
Disclosures of fair value of financial assets and financial liabilities at amortized cost [Line items]
Other financial liabilities	90,334	34,042
Measured at fair value on a recurring basis [member] | Level 2 [member] | Financial liabilities measured at fair value through profit or loss [member] | Derivatives [member]
Disclosures of fair value of financial assets and financial liabilities at amortized cost [Line items]
Other financial liabilities	115,168	69,491
Measured at fair value on a recurring basis [member] | Level 2 [member] | Financial assets measured at fair value through profit or loss [member] | Foreign exchange instruments [member]
Disclosures of fair value of financial assets and financial liabilities at amortized cost [Line items]
Other financial assets	19,215	12,233
Measured at fair value on a recurring basis [member] | Level 2 [member] | Financial assets measured at fair value through profit or loss [member] | Interest rate instruments [member]
Disclosures of fair value of financial assets and financial liabilities at amortized cost [Line items]
Other financial assets	76,589	34,164
Measured at fair value on a recurring basis [member] | Level 2 [member] | Financial assets measured at fair value through profit or loss [member] | Derivatives [member]
Disclosures of fair value of financial assets and financial liabilities at amortized cost [Line items]
Other financial assets	95,804	46,397
Measured at fair value on a recurring basis [member] | Level 2 [member] | Financial assets measured at fair value through profit or loss [member] | Debt securities [member]
Disclosures of fair value of financial assets and financial liabilities at amortized cost [Line items]
Other financial assets	34,949	31,551
Measured at fair value on a recurring basis [member] | Level 2 [member] | Financial assets measured at fair value through other comprehensive income [member] | Debt securities [member]
Disclosures of fair value of financial assets and financial liabilities at amortized cost [Line items]
Other financial assets	9,069	10,495
Measured at fair value on a recurring basis [member] | Level 2 [member] | Financial assets measured at fair value through other comprehensive income [member] | Equity securities [member]
Disclosures of fair value of financial assets and financial liabilities at amortized cost [Line items]
Other financial assets
Measured at fair value on a recurring basis [member] | Level 3 [member]
Disclosures of fair value of financial assets and financial liabilities at amortized cost [Line items]
Other financial assets	104,732	103,595
Other financial liabilities
Measured at fair value on a recurring basis [member] | Level 3 [member] | Debt securities [member]
Disclosures of fair value of financial assets and financial liabilities at amortized cost [Line items]
Other financial assets	5,224	5,439	¥ 5,206
Measured at fair value on a recurring basis [member] | Level 3 [member] | Equity securities [member]
Disclosures of fair value of financial assets and financial liabilities at amortized cost [Line items]
Other financial assets	99,508	98,156	¥ 12,671
Measured at fair value on a recurring basis [member] | Level 3 [member] | Financial liabilities measured at fair value through profit or loss [member] | Foreign exchange instruments [member]
Disclosures of fair value of financial assets and financial liabilities at amortized cost [Line items]
Other financial liabilities
Measured at fair value on a recurring basis [member] | Level 3 [member] | Financial liabilities measured at fair value through profit or loss [member] | Interest rate instruments [member]
Disclosures of fair value of financial assets and financial liabilities at amortized cost [Line items]
Other financial liabilities
Measured at fair value on a recurring basis [member] | Level 3 [member] | Financial liabilities measured at fair value through profit or loss [member] | Derivatives [member]
Disclosures of fair value of financial assets and financial liabilities at amortized cost [Line items]
Other financial liabilities
Measured at fair value on a recurring basis [member] | Level 3 [member] | Financial assets measured at fair value through profit or loss [member] | Foreign exchange instruments [member]
Disclosures of fair value of financial assets and financial liabilities at amortized cost [Line items]
Other financial assets
Measured at fair value on a recurring basis [member] | Level 3 [member] | Financial assets measured at fair value through profit or loss [member] | Interest rate instruments [member]
Disclosures of fair value of financial assets and financial liabilities at amortized cost [Line items]
Other financial assets
Measured at fair value on a recurring basis [member] | Level 3 [member] | Financial assets measured at fair value through profit or loss [member] | Derivatives [member]
Disclosures of fair value of financial assets and financial liabilities at amortized cost [Line items]
Other financial assets
Measured at fair value on a recurring basis [member] | Level 3 [member] | Financial assets measured at fair value through profit or loss [member] | Debt securities [member]
Disclosures of fair value of financial assets and financial liabilities at amortized cost [Line items]
Other financial assets	5,224	5,439
Measured at fair value on a recurring basis [member] | Level 3 [member] | Financial assets measured at fair value through other comprehensive income [member] | Debt securities [member]
Disclosures of fair value of financial assets and financial liabilities at amortized cost [Line items]
Other financial assets
Measured at fair value on a recurring basis [member] | Level 3 [member] | Financial assets measured at fair value through other comprehensive income [member] | Equity securities [member]
Disclosures of fair value of financial assets and financial liabilities at amortized cost [Line items]
Other financial assets	¥ 99,508	¥ 98,156

Fair Value - Changes in Level 3

Fair Value - Changes in Level 3 Assets and Liabilities Measured at Fair Value on a Recurring Basis (Detail) - JPY (¥) ¥ in Millions	12 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Disclosure of fair value measurement of assets [line items]
Beginning balance	¥ 580,423
Ending balance	631,777	¥ 580,423
Debt securities [member]
Disclosure of fair value measurement of assets [line items]
Beginning balance	54,964
Ending balance	62,204	54,964
Measured at fair value on a recurring basis [member]
Disclosure of fair value measurement of assets [line items]
Beginning balance	322,007
Ending balance	341,222	322,007
Measured at fair value on a recurring basis [member] | Level 3 [member]
Disclosure of fair value measurement of assets [line items]
Beginning balance	103,595
Ending balance	104,732	103,595
Measured at fair value on a recurring basis [member] | Level 3 [member] | Debt securities [member]
Disclosure of fair value measurement of assets [line items]
Beginning balance	5,439	5,206
Profit or loss	(28)	(42)
Other comprehensive income
Purchases
Sales
Exchange differences on translating foreign operations	(187)	275
Ending balance	5,224	5,439
Unrealized gains or losses included in profit or loss on assets	(28)	(42)
Measured at fair value on a recurring basis [member] | Level 3 [member] | Equity securities [member]
Disclosure of fair value measurement of assets [line items]
Beginning balance	98,156	12,671
Profit or loss
Other comprehensive income	(3,584)	(3,824)
Purchases	5,222	89,651
Sales	(40)	(295)
Exchange differences on translating foreign operations	(246)	(47)
Ending balance	99,508	98,156
Unrealized gains or losses included in profit or loss on assets

Fair Value - Carrying Amounts a

Fair Value - Carrying Amounts and Fair Values of Financial Assets and Financial Liabilities Measured at Amortized Cost (Detail) - JPY (¥) ¥ in Millions	Mar. 31, 2020	Mar. 31, 2019
Disclosures of fair value of financial assets and financial liabilities at amortized cost [Line items]
Receivables from financial services	¥ 5,161,165	¥ 5,405,250
Debt securities	631,777	580,423
Financing liabilities	7,469,686	7,331,120
Debt securities [member]
Disclosures of fair value of financial assets and financial liabilities at amortized cost [Line items]
Debt securities	62,204	54,964
Fair value [member]
Disclosures of fair value of financial assets and financial liabilities at amortized cost [Line items]
Receivables from financial services	5,173,553	5,417,297
Financing liabilities	7,408,800	7,355,632
Fair value [member] | Debt securities [member]
Disclosures of fair value of financial assets and financial liabilities at amortized cost [Line items]
Debt securities	¥ 62,210	¥ 54,952

Offsetting of Financial Asset_3

Offsetting of Financial Assets and Financial Liabilities - Offsetting Information Regarding Financial Assets and Financial Liabilities (Detail) - Derivatives [member] - JPY (¥) ¥ in Millions	Mar. 31, 2020	Mar. 31, 2019
Disclosure of detailed information about financial instruments [line items]
Gross amounts of recognized financial assets	¥ 95,804	¥ 46,397
Amounts offset in the consolidated statements of financial position, financial assets
Net amounts presented in the consolidated statements of financial position, financial assets	95,804	46,397
Amounts not offset due to not meeting offsetting criteria despite being subject to a master netting agreement or similar agreement, financial assets	(81,059)	(34,407)
Net Amounts, financial assets	14,745	11,990
Gross amounts of recognized financial liabilities	115,168	69,491
Amounts offset in the consolidated statements of financial position, financial liabilities
Net amounts presented in the consolidated statements of financial position, financial liabilities	115,168	69,491
Amounts not offset due to not meeting offsetting criteria despite being subject to a master netting agreement or similar agreement, financial liabilities	(81,059)	(34,407)
Net Amounts, financial liabilities	¥ 34,109	¥ 35,084

Commitments and Contingent Li_3

Commitments and Contingent Liabilities - Commitments for Purchases of Property, Plant and Equipment and Other Commitments (Detail) - JPY (¥) ¥ in Millions	Mar. 31, 2020	Mar. 31, 2019
Disclosure of contingent liabilities [abstract]
Commitments for purchases of property, plant and equipment and other commitments	¥ 80,670	¥ 99,379

Commitments and Contingent Li_4

Commitments and Contingent Liabilities - Future Minimum Lease Payments Under Non-cancelable Operating Leases (Detail) ¥ in Millions	Mar. 31, 2019JPY (¥)
Disclosure of finance lease and operating lease by lessee [line items]
Future minimum lease payments under non-cancelable operating leases	¥ 115,634
Within 1 year [member]
Disclosure of finance lease and operating lease by lessee [line items]
Future minimum lease payments under non-cancelable operating leases	23,733
Between 1 and 5 years [member]
Disclosure of finance lease and operating lease by lessee [line items]
Future minimum lease payments under non-cancelable operating leases	47,556
Later than 5 years [member]
Disclosure of finance lease and operating lease by lessee [line items]
Future minimum lease payments under non-cancelable operating leases	¥ 44,345

Commitments and Contingent Li_5

Commitments and Contingent Liabilities - Lease Payments under Operating Leases Recognized as Expenses (Detail) - JPY (¥) ¥ in Millions	12 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Lease And Sublease Payments Recognized As Expense [Abstract]
Lease payments under operating leases recognized as expenses	¥ 41,529	¥ 35,180

Commitments and Contingent Li_6

Commitments and Contingent Liabilities - Additional Information (Detail) ¥ in Millions	12 Months Ended
	Mar. 31, 2018JPY (¥)
Disclosure of contingent liabilities [abstract]
Settlement amount	¥ 53,739

Related Parties - Balances of R

Related Parties - Balances of Receivables and Payables with Affiliates and Joint Ventures (Detail) - JPY (¥) ¥ in Millions	Mar. 31, 2020	Mar. 31, 2019
Disclosure of transactions between related parties [line items]
Receivables	¥ 223,246	¥ 260,398
Payables	135,395	176,620
Affiliates [member]
Disclosure of transactions between related parties [line items]
Receivables	19,120	22,518
Payables	108,267	141,576
Joint ventures [member]
Disclosure of transactions between related parties [line items]
Receivables	204,126	237,880
Payables	¥ 27,128	¥ 35,044

Related Parties - Amount of Tra

Related Parties - Amount of Transactions with Affiliates and Joint Ventures (Detail) - JPY (¥) ¥ in Millions	12 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2018
Disclosure of transactions between related parties [line items]
Sales revenue	¥ 832,511	¥ 838,526	¥ 864,160
Purchase	1,408,199	1,552,516	1,551,555
Affiliates [member]
Disclosure of transactions between related parties [line items]
Sales revenue	109,615	113,814	119,725
Purchase	1,241,314	1,416,729	1,407,755
Joint ventures [member]
Disclosure of transactions between related parties [line items]
Sales revenue	722,896	724,712	744,435
Purchase	¥ 166,885	¥ 135,787	¥ 143,800

Related Parties - Additional I

Related Parties - Additional Information (Detail)	12 Months Ended
	Mar. 31, 2020
Basic Contract [Member]
Disclosure of transactions between related parties [line items]
Percentage of voting rights held by shareholders of integrated company	33.40%

Related Parties - Compensation

Related Parties - Compensation Paid to Directors (Detail) - JPY (¥) ¥ in Millions	12 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2018
Related party transactions [abstract]
Remuneration	¥ 691	¥ 732	¥ 719
Bonus	101	172	231
Stock compensation	140	125
Total	¥ 932	¥ 1,029	¥ 950

Related Parties - Major Consoli

Related Parties - Major Consolidated Subsidiaries (Detail)	12 Months Ended
	Mar. 31, 2020
Honda R&D Co., Ltd. [member]
Disclosure of subsidiaries [line items]
Company	Honda R&D Co., Ltd.
Country of Incorporation	Japan
Function	Research & Development
Percentage Ownership	100.00%
Percentage Voting Interest	100.00%
Honda Finance Co., Ltd. [member]
Disclosure of subsidiaries [line items]
Company	Honda Finance Co., Ltd.
Country of Incorporation	Japan
Function	Finance
Percentage Ownership	100.00%
Percentage Voting Interest	100.00%
American Honda Motor Co., Inc. [member]
Disclosure of subsidiaries [line items]
Company	American Honda Motor Co., Inc.
Country of Incorporation	U.S.A.
Function	Sales
Percentage Ownership	100.00%
Percentage Voting Interest	100.00%
Honda Aero., Inc. [member]
Disclosure of subsidiaries [line items]
Company	Honda Aero., Inc.
Country of Incorporation	U.S.A.
Function	Manufacturing
Percentage Ownership	100.00%
Percentage Voting Interest	100.00%
Honda North America, Inc. [member]
Disclosure of subsidiaries [line items]
Company	Honda North America, Inc.
Country of Incorporation	U.S.A.
Function	Coordination of Subsidiaries Operation
Percentage Ownership	100.00%
Percentage Voting Interest	100.00%
Honda of America Mfg., Inc. [member]
Disclosure of subsidiaries [line items]
Company	Honda of America Mfg., Inc.
Country of Incorporation	U.S.A.
Function	Manufacturing
Percentage Ownership	100.00%
Percentage Voting Interest	100.00%
American Honda Finance Corporation [member]
Disclosure of subsidiaries [line items]
Company	American Honda Finance Corporation
Country of Incorporation	U.S.A.
Function	Finance
Percentage Ownership	100.00%
Percentage Voting Interest	100.00%
Honda Aircraft Company, LLC [member]
Disclosure of subsidiaries [line items]
Company	Honda Aircraft Company, LLC
Country of Incorporation	U.S.A.
Function	Research & Development, Manufacturing and Sales
Percentage Ownership	100.00%
Percentage Voting Interest	100.00%
Honda Manufacturing of Alabama, LLC [member]
Disclosure of subsidiaries [line items]
Company	Honda Manufacturing of Alabama, LLC
Country of Incorporation	U.S.A.
Function	Manufacturing
Percentage Ownership	100.00%
Percentage Voting Interest	100.00%
Honda Manufacturing of Indiana, LLC [member]
Disclosure of subsidiaries [line items]
Company	Honda Manufacturing of Indiana, LLC
Country of Incorporation	U.S.A.
Function	Manufacturing
Percentage Ownership	100.00%
Percentage Voting Interest	100.00%
Honda Transmission Mfg. of America, Inc. [member]
Disclosure of subsidiaries [line items]
Company	Honda Transmission Mfg. of America, Inc.
Country of Incorporation	U.S.A.
Function	Manufacturing
Percentage Ownership	100.00%
Percentage Voting Interest	100.00%
Honda R&D Americas, Inc. [member]
Disclosure of subsidiaries [line items]
Company	Honda R&D Americas, Inc.
Country of Incorporation	U.S.A.
Function	Research & Development
Percentage Ownership	100.00%
Percentage Voting Interest	100.00%
Honda Canada Inc. [member]
Disclosure of subsidiaries [line items]
Company	Honda Canada Inc.
Country of Incorporation	Canada
Function	Manufacturing and Sales
Percentage Ownership	100.00%
Percentage Voting Interest	100.00%
Honda Canada Finance Inc. [member]
Disclosure of subsidiaries [line items]
Company	Honda Canada Finance Inc.
Country of Incorporation	Canada
Function	Finance
Percentage Ownership	100.00%
Percentage Voting Interest	100.00%
Honda de Mexico, S.A. de C.V. [member]
Disclosure of subsidiaries [line items]
Company	Honda de Mexico, S.A. de C.V.
Country of Incorporation	Mexico
Function	Manufacturing and Sales
Percentage Ownership	100.00%
Percentage Voting Interest	100.00%
Honda Motor Europe Limited [member]
Disclosure of subsidiaries [line items]
Company	Honda Motor Europe Limited
Country of Incorporation	U.K.
Function	Coordination of Subsidiaries Operation and Sales
Percentage Ownership	100.00%
Percentage Voting Interest	100.00%
Honda of the U.K. Manufacturing Ltd. [member]
Disclosure of subsidiaries [line items]
Company	Honda of the U.K. Manufacturing Ltd.
Country of Incorporation	U.K.
Function	Manufacturing
Percentage Ownership	100.00%
Percentage Voting Interest	100.00%
Honda Finance Europe plc [member]
Disclosure of subsidiaries [line items]
Company	Honda Finance Europe plc
Country of Incorporation	U.K.
Function	Finance
Percentage Ownership	100.00%
Percentage Voting Interest	100.00%
Honda Bank GmbH [member]
Disclosure of subsidiaries [line items]
Company	Honda Bank GmbH
Country of Incorporation	Germany
Function	Finance
Percentage Ownership	100.00%
Percentage Voting Interest	100.00%
Honda Turkiye A.S [member]
Disclosure of subsidiaries [line items]
Company	Honda Turkiye A.S
Country of Incorporation	Turkey
Function	Manufacturing and Sales
Percentage Ownership	100.00%
Percentage Voting Interest	100.00%
Honda Motor (China) Investment Co., Ltd. [member]
Disclosure of subsidiaries [line items]
Company	Honda Motor (China) Investment Co., Ltd.
Country of Incorporation	China
Function	Coordination of Subsidiaries Operation and Sales
Percentage Ownership	100.00%
Percentage Voting Interest	100.00%
Honda Auto Parts Manufacturing Co., Ltd. [member]
Disclosure of subsidiaries [line items]
Company	Honda Auto Parts Manufacturing Co., Ltd.
Country of Incorporation	China
Function	Manufacturing
Percentage Ownership	100.00%
Percentage Voting Interest	100.00%
Honda Motorcycle & Scooter India (Private) Ltd. [member]
Disclosure of subsidiaries [line items]
Company	Honda Motorcycle & Scooter India (Private) Ltd.
Country of Incorporation	India
Function	Manufacturing and Sales
Percentage Ownership	100.00%
Percentage Voting Interest	100.00%
Honda Cars India Limited [member]
Disclosure of subsidiaries [line items]
Company	Honda Cars India Limited
Country of Incorporation	India
Function	Manufacturing and Sales
Percentage Ownership	100.00%
Percentage Voting Interest	100.00%
P.T. Honda Precision Parts Manufacturing [member]
Disclosure of subsidiaries [line items]
Company	P.T. Honda Precision Parts Manufacturing
Country of Incorporation	Indonesia
Function	Manufacturing
Percentage Ownership	100.00%
Percentage Voting Interest	100.00%
P.T. Honda Prospect Motor [member]
Disclosure of subsidiaries [line items]
Company	P.T. Honda Prospect Motor
Country of Incorporation	Indonesia
Function	Manufacturing and Sales
Percentage Ownership	51.00%
Percentage Voting Interest	51.00%
Honda Malaysia Sdn Bhd [member]
Disclosure of subsidiaries [line items]
Company	Honda Malaysia Sdn Bhd
Country of Incorporation	Malaysia
Function	Manufacturing and Sales
Percentage Ownership	51.00%
Percentage Voting Interest	51.00%
Honda Taiwan Co., Ltd. [member]
Disclosure of subsidiaries [line items]
Company	Honda Taiwan Co., Ltd.
Country of Incorporation	Taiwan
Function	Sales
Percentage Ownership	100.00%
Percentage Voting Interest	100.00%
Asian Honda Motor Co., Ltd. [member]
Disclosure of subsidiaries [line items]
Company	Asian Honda Motor Co., Ltd.
Country of Incorporation	Thailand
Function	Coordination of Subsidiaries Operation and Sales
Percentage Ownership	100.00%
Percentage Voting Interest	100.00%
Honda Leasing (Thailand) Co., Ltd. [member]
Disclosure of subsidiaries [line items]
Company	Honda Leasing (Thailand) Co., Ltd.
Country of Incorporation	Thailand
Function	Finance
Percentage Ownership	100.00%
Percentage Voting Interest	100.00%
Honda Automobile (Thailand) Co., Ltd. [member]
Disclosure of subsidiaries [line items]
Company	Honda Automobile (Thailand) Co., Ltd.
Country of Incorporation	Thailand
Function	Manufacturing and Sales
Percentage Ownership	89.00%
Percentage Voting Interest	89.00%
Thai Honda Manufacturing Co., Ltd. [member]
Disclosure of subsidiaries [line items]
Company	Thai Honda Manufacturing Co., Ltd.
Country of Incorporation	Thailand
Function	Manufacturing
Percentage Ownership	83.00%
Percentage Voting Interest	83.00%
A.P. Honda Co., Ltd. [member]
Disclosure of subsidiaries [line items]
Company	A.P. Honda Co., Ltd.
Country of Incorporation	Thailand
Function	Sales
Percentage Ownership	61.00%
Percentage Voting Interest	61.00%
Honda Vietnam Co., Ltd. [member]
Disclosure of subsidiaries [line items]
Company	Honda Vietnam Co., Ltd.
Country of Incorporation	Vietnam
Function	Manufacturing and Sales
Percentage Ownership	70.00%
Percentage Voting Interest	70.00%
Honda Motor de Argentina S.A. [member]
Disclosure of subsidiaries [line items]
Company	Honda Motor de Argentina S.A.
Country of Incorporation	Argentina
Function	Manufacturing and Sales
Percentage Ownership	100.00%
Percentage Voting Interest	100.00%
Honda South America Ltda. [member]
Disclosure of subsidiaries [line items]
Company	Honda South America Ltda.
Country of Incorporation	Brazil
Function	Coordination of Subsidiaries Operation
Percentage Ownership	100.00%
Percentage Voting Interest	100.00%
Banco Honda S.A. [member]
Disclosure of subsidiaries [line items]
Company	Banco Honda S.A.
Country of Incorporation	Brazil
Function	Finance
Percentage Ownership	100.00%
Percentage Voting Interest	100.00%
Honda Automoveis do Brasil Ltda. [member]
Disclosure of subsidiaries [line items]
Company	Honda Automoveis do Brasil Ltda.
Country of Incorporation	Brazil
Function	Manufacturing and Sales
Percentage Ownership	100.00%
Percentage Voting Interest	100.00%
Moto Honda da Amazonia Ltda. [member]
Disclosure of subsidiaries [line items]
Company	Moto Honda da Amazonia Ltda.
Country of Incorporation	Brazil
Function	Manufacturing and Sales
Percentage Ownership	100.00%
Percentage Voting Interest	100.00%