Honda Motor (HMC) 20-F 22 Jun 22 2022 FY Annual report (foreign) Financial data

Cover Page

Cover Page	12 Months Ended
	Mar. 31, 2022 shares
Document Information [Line Items]
Document Type	20-F
Amendment Flag	false
Document Period End Date	Mar. 31, 2022
Document Fiscal Year Focus	2022
Document Fiscal Period Focus	FY
Document Registration Statement	false
Document Annual Report	true
Document Transition Report	false
Document Shell Company Report	false
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
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Emerging Growth Company	false
Entity Shell Company	false
ICFR Auditor Attestation Flag	true
Entity File Number	1-7628
Entity Incorporation, State or Country Code	M0
Entity Address, Address Line One	No. 1-1, Minami-Aoyama 2-chome
Entity Address, Address Line Two	Minato-ku
Entity Address, City or Town	Tokyo
Entity Address, Country	JP
Entity Address, Postal Zip Code	107-8556
Document Accounting Standard	International Financial Reporting Standards
Auditor Name	KPMG AZSA LLC
Auditor Firm ID	1009
Auditor Location	Tokyo, Japan
Business Contact [Member]
Document Information [Line Items]
Entity Address, Address Line One	No. 1-1, Minami-Aoyama 2-chome
Entity Address, Address Line Two	Minato-ku
Entity Address, City or Town	Tokyo
Entity Address, Country	JP
Entity Address, Postal Zip Code	107-8556
Contact Personnel Name	Rikako Suzuki
City Area Code	+81-3
Local Phone Number	5412-1134
American Depositary Shares [Member]
Document Information [Line Items]
Title of 12(b) Security	American Depositary Shares
Trading Symbol	HMC
Security Exchange Name	NYSE
Entity Common Stock, Shares Outstanding	107,517,766
Common Stock [member]
Document Information [Line Items]
Title of 12(b) Security	Common Stock
No Trading Symbol Flag	true
Security Exchange Name	NONE
Entity Common Stock, Shares Outstanding	1,710,600,356

Consolidated Statements of Fina

Consolidated Statements of Financial Position - JPY (¥) ¥ in Millions	Mar. 31, 2022	Mar. 31, 2021
Current assets:
Cash and cash equivalents	¥ 3,674,931	¥ 2,758,020
Trade receivables	896,768	801,814
Receivables from financial services	1,694,113	1,794,654
Other financial assets	217,743	295,307
Inventories	1,918,548	1,545,600
Other current assets	439,322	383,696
Total current assets	8,841,425	7,579,091
Non-current assets:
Investments accounted for using the equity method	967,404	891,002
Receivables from financial services	3,740,383	3,619,896
Other financial assets	819,654	628,533
Intangible assets	849,507	818,763
Deferred tax assets	91,592	99,552
Other non-current assets	424,652	342,763
Total non-current assets	15,131,728	14,341,939
Total assets	23,973,153	21,921,030
Current liabilities:
Trade payables	1,236,233	1,088,061
Financing liabilities	3,118,304	3,005,624
Accrued expenses	375,601	415,106
Other financial liabilities	236,900	182,145
Income taxes payable	96,116	47,793
Provisions	268,388	362,151
Other current liabilities	672,857	614,577
Total current liabilities	6,004,399	5,715,457
Non-current liabilities:
Financing liabilities	4,984,252	4,715,361
Other financial liabilities	282,083	280,809
Retirement benefit liabilities	282,054	358,532
Provisions	253,625	278,890
Deferred tax liabilities	990,754	842,001
Other non-current liabilities	403,440	357,141
Total non-current liabilities	7,196,208	6,832,734
Total liabilities	13,200,607	12,548,191
Equity:
Common stock	86,067	86,067
Capital surplus	185,495	172,049
Treasury stock	(328,309)	(273,786)
Retained earnings	9,539,133	8,901,266
Other components of equity	990,438	196,710
Equity attributable to owners of the parent	10,472,824	9,082,306
Non-controlling interests	299,722	290,533
Total equity	10,772,546	9,372,839
Total liabilities and equity	23,973,153	21,921,030
Equipment on operating leases [member]
Non-current assets:
Property, plant and equipment	5,159,129	4,919,916
Property, plant and equipment [member]
Non-current assets:
Property, plant and equipment	¥ 3,079,407	¥ 3,021,514

Consolidated Statements of Inco

Consolidated Statements of Income - JPY (¥) ¥ in Millions	12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2020
Profit or loss [abstract]
Sales revenue	¥ 14,552,696	¥ 13,170,519	¥ 14,931,009
Operating costs and expenses:
Cost of sales	(11,567,923)	(10,439,689)	(11,851,659)
Selling, general and administrative	(1,326,485)	(1,331,728)	(1,641,590)
Research and development	(787,056)	(738,894)	(804,123)
Total operating costs and expenses	(13,681,464)	(12,510,311)	(14,297,372)
Operating profit	871,232	660,208	633,637
Share of profit of investments accounted for using the equity method	202,512	272,734	164,203
Finance income and finance costs:
Interest income	25,627	19,805	49,412
Interest expense	(16,867)	(13,877)	(24,689)
Other, net	(12,314)	(24,817)	(32,645)
Total finance income and finance costs	(3,554)	(18,889)	(7,922)
Profit before income taxes	1,070,190	914,053	789,918
Income tax expense	(309,489)	(218,609)	(279,986)
Profit for the year	760,701	695,444	509,932
Profit for the year attributable to:
Owners of the parent	707,067	657,425	455,746
Non-controlling interests	¥ 53,634	¥ 38,019	¥ 54,186
Earnings per share attributable to owners of the parent
Basic and diluted	¥ 411.09	¥ 380.75	¥ 260.13

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income - JPY (¥) ¥ in Millions	12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2020
Statement of comprehensive income [abstract]
Profit for the year	¥ 760,701	¥ 695,444	¥ 509,932
Items that will not be reclassified to profit or loss
Remeasurements of defined benefit plans	117,042	238,262	(102,983)
Net changes in revaluation of financial assets measured at fair value through other comprehensive income	58,635	67,603	(23,361)
Share of other comprehensive income of investments accounted for using the equity method	1,786	4,910	(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	(682)	(43)	279
Exchange differences on translating foreign operations	680,724	239,097	(293,201)
Share of other comprehensive income of investments accounted for using the equity method	77,447	27,350	(30,393)
Total other comprehensive income, net of tax	934,952	577,179	(451,209)
Comprehensive income for the year	1,695,653	1,272,623	58,723
Comprehensive income for the year attributable to:
Owners of the parent	1,619,997	1,214,757	24,287
Non-controlling interests	¥ 75,656	¥ 57,866	¥ 34,436

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, 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
Comprehensive income for the year
Profit for the year	695,444				657,425		657,425	38,019
Other comprehensive income, net of tax	577,179					557,332	557,332	19,847
Total comprehensive income for the year	1,272,623				657,425	557,332	1,214,757	57,866
Reclassification to retained earnings					245,983	(245,983)
Transactions with owners and other
Dividends paid	(188,438)				(145,090)		(145,090)	(43,348)
Purchases of treasury stock	(6)			(6)			(6)
Disposal of treasury stock	160			160			160
Share-based payment transactions	226		226				226
Equity transactions and others	2,251							2,251
Total transactions with owners and other	(185,807)		226	154	(145,090)		(144,710)	(41,097)
Ending balance at Mar. 31, 2021	9,372,839	86,067	172,049	(273,786)	8,901,266	196,710	9,082,306	290,533
Comprehensive income for the year
Profit for the year	760,701				707,067		707,067	53,634
Other comprehensive income, net of tax	934,952					912,930	912,930	22,022
Total comprehensive income for the year	1,695,653				707,067	912,930	1,619,997	75,656
Reclassification to retained earnings					119,202	(119,202)
Transactions with owners and other
Dividends paid	(233,533)				(188,402)		(188,402)	(45,131)
Purchases of treasury stock	(62,758)			(62,758)			(62,758)
Disposal of treasury stock	578			578			578
Share-based payment transactions	(233)		(233)				(233)
Equity transactions and others	0		13,679	7,657			21,336	(21,336)
Total transactions with owners and other	(295,946)		13,446	(54,523)	(188,402)		(229,479)	(66,467)
Ending balance at Mar. 31, 2022	¥ 10,772,546	¥ 86,067	¥ 185,495	¥ (328,309)	¥ 9,539,133	¥ 990,438	¥ 10,472,824	¥ 299,722

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - JPY (¥) ¥ in Millions	12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2020
Cash flows from operating activities:
Profit before income taxes	¥ 1,070,190	¥ 914,053	¥ 789,918
Depreciation, amortization and impairment losses excluding equipment on operating leases	611,063	624,239	699,877
Share of profit of investments accounted for using the equity method	(202,512)	(272,734)	(164,203)
Finance income and finance costs, net	(56,352)	22,630	(47,892)
Interest income and interest costs from financial services, net	(155,872)	(137,178)	(130,636)
Changes in assets and liabilities
Trade receivables	(24,037)	(133,788)	132,702
Inventories	(208,895)	68,281	(59,931)
Trade payables	50,122	101,301	(141,159)
Accrued expenses	(68,811)	(40,927)	(4,529)
Provisions and retirement benefit liabilities	(156,079)	106,829	118
Receivables from financial services	509,741	(59,934)	103,614
Equipment on operating leases	171,600	(161,579)	(270,677)
Other assets and liabilities	28,981	(72,473)	(20,524)
Other, net	(19,782)	5,190	10,959
Dividends received	193,555	191,112	185,742
Interest received	237,724	236,729	288,821
Interest paid	(97,884)	(113,100)	(162,263)
Income taxes paid, net of refund	(203,130)	(206,272)	(230,522)
Net cash provided by operating activities	1,679,622	1,072,379	979,415
Cash flows from investing activities:
Payments for additions to property, plant and equipment	(268,143)	(318,410)	(370,195)
Payments for additions to and internally developed intangible assets	(181,083)	(232,727)	(231,063)
Proceeds from sales of property, plant and equipment and intangible assets	27,108	6,770	17,638
Payments for acquisitions of subsidiaries, net of cash and cash equivalents acquired		2,230	(3,047)
Payments for acquisitions of investments accounted for using the equity method		(110,747)	(14,584)
Proceeds from sales of investments accounted for using the equity method		12,570
Payments for acquisitions of other financial assets	(488,631)	(433,375)	(282,806)
Proceeds from sales and redemptions of other financial assets	534,693	276,808	265,980
Other, net			(1,404)
Net cash used in investing activities	(376,056)	(796,881)	(619,481)
Cash flows from financing activities:
Proceeds from short-term financing liabilities	7,487,724	9,115,347	9,037,608
Repayments of short-term financing liabilities	(7,960,144)	(9,294,859)	(9,039,601)
Proceeds from long-term financing liabilities	2,002,823	1,948,835	2,021,173
Repayments of long-term financing liabilities	(1,761,561)	(1,798,429)	(1,676,504)
Dividends paid to owners of the parent	(188,402)	(145,090)	(196,795)
Dividends paid to non-controlling interests	(53,813)	(41,755)	(54,280)
Purchases and sales of treasury stock, net	(62,180)	154	(96,113)
Repayments of lease liabilities	(80,165)	(67,628)	(78,659)
Other, net	0	(555)	(4,240)
Net cash provided by (used in) financing activities	(615,718)	(283,980)	(87,411)
Effect of exchange rate changes on cash and cash equivalents	229,063	94,149	(94,291)
Net change in cash and cash equivalents	916,911	85,667	178,232
Cash and cash equivalents at beginning of year	2,758,020	2,672,353	2,494,121
Cash and cash equivalents at end of year	¥ 3,674,931	¥ 2,758,020	¥ 2,672,353

Reporting Entity

Reporting Entity	12 Months Ended
	Mar. 31, 2022
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, Italy, France, China, India, Indonesia, Malaysia, Philippines, Thailand, Vietnam, Argentina and Brazil.

Basis of Preparation

Basis of Preparation	12 Months Ended
	Mar. 31, 2022
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) 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, 2022 have a significant effect on the consolidated financial statements. (e) 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. Regarding the spread of COVID-19, COVID-19 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) • 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, 2022
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. 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, 2020, 2021 and 2022. 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 economic conditions, external market information on new and used vehicles, historical trends, and recent auction values. (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 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 constant periodic rate of interest on the remaining balance of the lease liability and reducing the carrying amount to reflect the lease payments. The lease liability is remeasured if Honda changes its assessment of whether it will exercise an extension or termination option. 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 asset. However, if the carrying amount of the right-of-use asset is reduced to zero and there is a further reduction in the measurement of the lease liability, any remaining amount of the remeasurement is recognized in profit or loss. 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 the lease other than finance lease is classified as an operating lease. 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 (j) Impairment 1) Financial assets measured at amortized cost and debt securities classified into financial assets measured at fair value through other comprehensive income 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 ECL is the portion of lifetime ECL that results from default events that are possible within 12 months after the reporting date. ECL is a probability-weighted estimate of the difference between the contractual cash flows and the cash flows that the entity expects to receive, discounted at the original effective interest rates. Receivables from financial services – Allowance for credit losses The allowance for credit losses is management’s estimate of expected credit loss on receivables from 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 from 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. 2) Non-financial At the end of the reporting period, the carrying amount of non-financial assets other than inventories and deferred tax assets (which are comprised mainly of equipment on operating leases, property, plant and equipment, and intangible assets) is assessed to determine whether or not there is any indication of impairment. If there is such an indication, the recoverable amount of such asset is estimated and compared with the carrying amount of the asset, as test of impairment. 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 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 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 business, Life creation 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. 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. Sales 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. 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. (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 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 taxati

Segment Information

Segment Information	12 Months Ended
	Mar. 31, 2022
Text block [Abstract]
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, 2020, 2021 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 (reversal) for credit and lease residual losses on receivables from financial services — — 56,894 — 56,894 — 56,894 As of and for the year ended March 31, 2021 Yen (millions) Motorcycle Automobile Financial Life Segment Reconciling Consolidated Sales revenue: External customers ¥ 1,787,283 ¥ 8,567,205 ¥ 2,494,294 ¥ 321,737 ¥ 13,170,519 ¥ — ¥ 13,170,519 Intersegment — 212,144 12,494 20,107 244,745 (244,745 ) — Total 1,787,283 8,779,349 2,506,788 341,844 13,415,264 (244,745 ) 13,170,519 Segment profit (loss) ¥ 224,608 ¥ 90,255 ¥ 356,980 ¥ (11,635 ) ¥ 660,208 ¥ — ¥ 660,208 Share of profit of investments accounted for using the equity method ¥ 18,164 ¥ 254,079 ¥ — ¥ 491 ¥ 272,734 ¥ — ¥ 272,734 Segment assets 1,555,057 8,643,109 10,832,645 374,169 21,404,980 516,050 21,921,030 Investments accounted for using the equity method 88,476 796,036 — 6,490 891,002 — 891,002 Depreciation and amortization 68,258 515,241 825,975 15,644 1,425,118 — 1,425,118 Capital expenditures 48,800 500,431 2,006,264 11,609 2,567,104 — 2,567,104 Impairment losses on non-financial 726 19,999 (16,319 ) 357 4,763 — 4,763 Provision (reversal) for credit and lease residual losses on receivables from financial services — — (5,038 ) — (5,038 ) — (5,038 ) As of and for the year ended March 31, 2022 Yen (millions) Motorcycle Automobile Financial Life Segment Reconciling Consolidated Sales revenue: External customers ¥ 2,185,253 ¥ 9,147,498 ¥ 2,820,667 ¥ 399,278 ¥ 14,552,696 ¥ — ¥ 14,552,696 Intersegment — 213,095 2,656 22,480 238,231 (238,231 ) — Total 2,185,253 9,360,593 2,823,323 421,758 14,790,927 (238,231 ) 14,552,696 Segment profit (loss) ¥ 311,492 ¥ 236,207 ¥ 333,032 ¥ (9,499 ) ¥ 871,232 ¥ — ¥ 871,232 Share of profit of investments accounted for using the equity method ¥ 33,510 ¥ 168,415 ¥ — ¥ 587 ¥ 202,512 ¥ — ¥ 202,512 Segment assets 1,448,926 9,563,553 11,318,756 475,124 22,806,359 1,166,794 23,973,153 Investments accounted for using the equity method 104,535 855,309 — 7,560 967,404 — 967,404 Depreciation and amortization 65,423 510,755 883,712 17,018 1,476,908 — 1,476,908 Capital expenditures 49,203 410,169 2,028,700 15,748 2,503,820 — 2,503,820 Impairment losses on non-financial (23 ) 13,097 1,874 276 15,224 — 15,224 Provision (reversal) for credit and lease residual losses on receivables from financial — — 9,282 — 9,282 — 9,282 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, 2020, 2021 and 2022 amounted to ¥787,022 million, ¥696,327 million and ¥1,319,995 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, 2020, 2021 and 2022 are ¥212,275 million, ¥272,076 million and ¥118,378 million, respectively. These are mainly included in Automobile business. 6. The amounts of write-down of inventories recognized as an expense for the years ended March 31, 2020, 2021 and 2022 are ¥37,752 million, ¥28,420 million and ¥11,295 million respectively. These are related to Automobile business and aircraft and aircraft engines, which are included in Life creation and other businesses. 7 . Right-of-use (b) Product or Service Groups Information Sales revenue by product or service groups of Honda for the years ended March 31, 2020, 2021 and 2022 is as follows: Yen (millions) 2020 2021 2022 Motorcycles and relevant parts ¥ 1,921,065 ¥ 1,658,871 ¥ 2,066,557 All-terrain side-by-sides 138,270 128,412 118,696 Automobiles and relevant parts 11,199,477 9,746,374 10,582,764 Financial services 1,346,568 1,315,125 1,385,401 Power products and relevant parts 243,251 257,237 294,577 Others 82,378 64,500 104,701 Total ¥ 14,931,009 ¥ 13,170,519 ¥ 14,552,696 (c) Geographical Information The sales revenue and carrying amounts of non-current As of and for the year ended March 31, 2020 Yen (millions) Japan United Other 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 As of and for the year ended March 31, 2021 Yen (millions) Japan United Other Total Sales revenue ¥ 2,190,797 ¥ 6,291,857 ¥ 4,687,865 ¥ 13,170,519 Non-current ¥ 3,050,270 ¥ 4,242,405 ¥ 1,641,793 ¥ 8,934,468 As of and for the year ended March 31, 2022 Yen (millions) Japan United Other Total Sales revenue ¥ 2,354,532 ¥ 6,728,800 ¥ 5,469,364 ¥ 14,552,696 Non-current ¥ 3,036,832 ¥ 4,490,562 ¥ 1,768,697 ¥ 9,296,091 (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, 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 As of and for the year ended March 31, 2021 Yen (millions) Japan North Europe Asia Other Total Reconciling Consolidated Sales revenue: External customers ¥ 2,190,797 ¥ 7,081,264 ¥ 503,549 ¥ 2,966,814 ¥ 428,095 ¥ 13,170,519 ¥ — ¥ 13,170,519 Inter-geographic areas 1,677,038 399,573 178,300 491,965 6,400 2,753,276 (2,753,276 ) — Total 3,867,835 7,480,837 681,849 3,458,779 434,495 15,923,795 (2,753,276 ) 13,170,519 Operating profit (loss) ¥ (75,935 ) ¥ 455,888 ¥ 27,460 ¥ 251,886 ¥ (5,034 ) ¥ 654,265 ¥ 5,943 ¥ 660,208 Assets ¥ 5,295,475 ¥ 12,209,455 ¥ 677,066 ¥ 3,267,417 ¥ 482,918 ¥ 21,932,331 ¥ (11,301 ) ¥ 21,921,030 Non-current ¥ 3,050,270 ¥ 5,039,085 ¥ 60,790 ¥ 666,795 ¥ 117,528 ¥ 8,934,468 ¥ — ¥ 8,934,468 As of and for the year ended March 31, 2022 Yen (millions) Japan North Europe Asia Other Total Reconciling Consolidated Sales revenue: External customers ¥ 2,354,532 ¥ 7,618,932 ¥ 602,695 ¥ 3,393,323 ¥ 583,214 ¥ 14,552,696 ¥ — ¥ 14,552,696 Inter-geographic areas 2,004,754 471,255 98,516 662,124 9,925 3,246,574 (3,246,574 ) — Total 4,359,286 8,090,187 701,211 4,055,447 593,139 17,799,270 (3,246,574 ) 14,552,696 Operating profit (loss) ¥ 6,411 ¥ 501,073 ¥ 26,681 ¥ 339,129 ¥ 22,899 ¥ 896,193 ¥ (24,961 ) ¥ 871,232 Assets ¥ 5,318,033 ¥ 12,983,779 ¥ 597,473 ¥ 3,803,877 ¥ 619,998 ¥ 23,323,160 ¥ 649,993 ¥ 23,973,153 Non-current ¥ 3,036,832 ¥ 5,334,121 ¥ 49,129 ¥ 706,562 ¥ 169,447 ¥ 9,296,091 ¥ — ¥ 9,296,091 Explanatory notes: 1. Major countries in each geographic area: North America United States, Canada, Mexico Europe United Kingdom, Germany, Belgium, Italy, France Asia Thailand, China, India, Vietnam , Malaysia 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, 2020, 2021 and 2022 amounted to ¥787,022 million, ¥696,327 million and ¥1,319,995 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

Cash and Cash Equivalents	12 Months Ended
	Mar. 31, 2022
Text block [Abstract]
Cash and Cash Equivalents	(5) Cash and Cash Equivalents Cash and cash equivalents as of March 31, 2021 and 2022 consist of the following: Yen (millions) 2021 2022 Cash and deposits ¥ 2,037,392 ¥ 2,654,447 Cash equivalents 720,628 1,020,484 Total ¥ 2,758,020 ¥ 3,674,931 Cash equivalents held by Honda mainly consist of money market funds and certificates of deposit.

Trade Receivables

Trade Receivables	12 Months Ended
	Mar. 31, 2022
Text block [Abstract]
Trade Receivables	(6) Trade Receivables Trade receivables are classified as financial assets measured at amortized cost. Trade receivables as of March 31, 2021 and 2022 consist of the following: Yen (millions) 2021 2022 Trade accounts and notes receivable ¥ 689,347 ¥ 793,022 Other 122,988 112,591 Allowance for impairment losses (10,521 ) (8,845 ) Total ¥ 801,814 ¥ 896,768 The changes in the allowance for impairment losses on trade receivables for the years ended March 31, 2020, 2021 and 2022 are as follows: Yen (millions) 2020 2021 2022 Balance at beginning of year ¥ 12,555 ¥ 11,302 ¥ 10,521 Remeasurement ¥ 589 ¥ 516 ¥ 260 Write-offs (971 ) (1,312 ) (2,648 ) Exchange differences on translating foreign operations (871 ) 15 712 Balance at end of year ¥ 11,302 ¥ 10,521 ¥ 8,845

Receivables from Financial Serv

Receivables from Financial Services	12 Months Ended
	Mar. 31, 2022
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 Yen (millions) 2021 2022 Consumer finance receivables: Retail ¥ 4,847,906 ¥ 5,054,428 Finance lease 126,766 145,932 Dealer finance receivables: Wholesale 486,138 284,506 Subtotal ¥ 5,460,810 ¥ 5,484,866 Allowance for credit losses ¥ (37,366 ) ¥ (39,063 ) Unearned interest income and fees (8,894 ) (11,307 ) Total ¥ 5,414,550 ¥ 5,434,496 Current assets ¥ 1,794,654 ¥ 1,694,113 Non-current 3,619,896 3,740,383 Total ¥ 5,414,550 ¥ 5,434,496 Finance lease receivables The lease payments receivable under the finance leases by maturity as of March 31, 2021 and 2022 are as follows: Yen (millions) 2021 2022 Within 1 year ¥ 22,339 ¥ 25,066 Between 1 and 2 years 22,566 25,569 Between 2 and 3 years 10,861 13,192 Between 3 and 4 years 5,297 9,335 Between 4 and 5 years 1,289 2,153 Later than 5 years 94 1,827 Undiscounted lease payments receivable ¥ 62,446 ¥ 77,142 Unearned finance income ¥ (3,829 ) ¥ (4,603 ) Unguaranteed residual value ¥ 59,255 ¥ 62,086 Net investment in the lease ¥ 117,872 ¥ 134,625 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, 2020, 2021 and 2022 are as follows: For the years ended March 31, 2020, 2021 and 2022 Yen (millions) 12-month ECL Lifetime ECL Total Not credit-impaired Credit-impaired Retail: Balance as of April 1, 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 Remeasurement ¥ (3,286 ) ¥ (20,319 ) ¥ 18,827 ¥ (4,778 ) Write-offs — — (20,733 ) (20,733 ) Exchange differences on translating foreign operations 111 (390 ) (165 ) (444 ) Balance as of March 31, 2021 ¥ 23,480 ¥ 5,923 ¥ 4,883 ¥ 34,286 Remeasurement ¥ (2,513 ) ¥ (925 ) ¥ 13,701 ¥ 10,263 Write-offs — — (12,256 ) (12,256 ) Exchange differences on translating foreign operations 2,822 516 1,136 4,474 Balance as of March 31, 2022 ¥ 23,789 ¥ 5,514 ¥ 7,464 ¥ 36,767 Finance lease: Balance as of April 1, 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 Remeasurement ¥ (65 ) ¥ 71 ¥ 136 ¥ 142 Write-offs — — (107 ) (107 ) Exchange differences on translating foreign operations 54 17 17 88 Balance as of March 31, 2021 ¥ 470 ¥ 184 ¥ 159 ¥ 813 Remeasurement ¥ (339 ) ¥ (98 ) ¥ 182 ¥ (255 ) Write-offs — — (97 ) (97 ) Exchange differences on translating foreign operations 8 6 12 26 Balance as of March 31, 2022 ¥ 139 ¥ 92 ¥ 256 ¥ 487 Yen (millions) 12-month ECL Lifetime ECL Total Not credit-impaired Credit-impaired Wholesale: Balance as of April 1, 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 Remeasurement ¥ 160 ¥ (270 ) ¥ (292 ) ¥ (402 ) Write-offs — — 18 18 Exchange differences on translating foreign operations 144 14 (44 ) 114 Balance as of March 31, 2021 ¥ 1,741 ¥ 62 ¥ 464 ¥ 2,267 Remeasurement ¥ (649 ) ¥ (46 ) ¥ (31 ) ¥ (726 ) Write-offs — — 30 30 Exchange differences on translating foreign operations 84 1 153 238 Balance as of March 31, 2022 ¥ 1,176 ¥ 17 ¥ 616 ¥ 1,809 Total: Balance as of April 1, 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 Remeasurement ¥ (3,191 ) ¥ (20,518 ) ¥ 18,671 ¥ (5,038 ) Write-offs — — (20,822 ) (20,822 ) Exchange differences on translating foreign operations 309 (359 ) (192 ) (242 ) Balance as of March 31, 2021 ¥ 25,691 ¥ 6,169 ¥ 5,506 ¥ 37,366 Remeasurement ¥ (3,501 ) ¥ (1,069 ) ¥ 13,852 ¥ 9,282 Write-offs — — (12,323 ) (12,323 ) Exchange differences on translating foreign operations 2,914 523 1,301 4,738 Balance as of March 31, 2022 ¥ 25,104 ¥ 5,623 ¥ 8,336 ¥ 39,063 For more information on allowance for credit losses, see note 25(c).

Other Financial Assets

Other Financial Assets	12 Months Ended
	Mar. 31, 2022
Text block [Abstract]
Other Financial Assets	(8) Other Financial Assets Other financial assets as of March 31, 2021 and 2022 consist of the following: Yen (millions) 2021 2022 Financial assets measured at amortized cost: Receivables other than trade receivables and receivables from financial services ¥ 147,472 ¥ 166,936 Debt securities 173,302 79,176 Guaranty deposits 12,006 11,499 Restricted cash 49,166 53,290 Other 13,612 4,352 Allowance for impairment losses (3,358 ) (3,212 ) Financial assets measured at fair value through other comprehensive income: Debt securities 10,134 19,984 Equity securities 344,205 468,783 Financial assets measured at fair value through profit or loss: Derivatives 108,978 134,338 Debt securities 68,323 102,251 Total ¥ 923,840 ¥ 1,037,397 Current assets ¥ 295,307 ¥ 217,743 Non-current 628,533 819,654 Total ¥ 923,840 ¥ 1,037,397 The changes in the allowance for impairment losses on other financial assets for the years ended March 31, 2020, 2021 and 2022 are as follows: Yen (millions) 2020 2021 2022 Balance at beginning of year ¥ 4,233 ¥ 3,364 ¥ 3,358 Remeasurement ¥ 600 ¥ 792 ¥ 42 Write-offs (1,463 ) (805 ) (191 ) Exchange differences on translating foreign operations (6 ) 7 3 Balance at end of year ¥ 3,364 ¥ 3,358 ¥ 3,212 The allowance for impairment losses on other financial assets for the years ended March 31, 2020, 2021 and 2022 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, 2021 and 2022 are as follows: As of March 31, 2021 Yen (millions) Fair value Contemporary Amperex Technology Co., Ltd. ¥ 124,782 GM Cruise Holdings LLC 94,324 Stanley Electric Co., Ltd. 30,431 Mitsubishi UFJ Financial Group, Inc. 8,581 Daido Steel Co., Ltd. 6,670 Tokio Marine Holdings, Inc. 5,753 As of March 31, 2022 Yen (millions) Fair value Contemporary Amperex Technology Co., Ltd. ¥ 226,938 GM Cruise Holdings LLC 105,916 Stanley Electric Co., Ltd. 21,463 Mitsubishi UFJ Financial Group, Inc. 11,026 SES AI Corporation 8,307 Tokio Marine Holdings, Inc. 7,789

Inventories

Inventories	12 Months Ended
	Mar. 31, 2022
Text block [Abstract]
Inventories	(9) Inventories Inventories as of March 31, 2021 and 2022 consist of the following: Yen (millions) 2021 2022 Finished goods ¥ 784,544 ¥ 907,872 Work in process 71,853 90,871 Raw materials 689,203 919,805 Total ¥ 1,545,600 ¥ 1,918,548 The respectively.

Investments Accounted for Using

Investments Accounted for Using the Equity Method	12 Months Ended
	Mar. 31, 2022
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, 2021 Yen (millions) 2021 2022 Investments accounted for using the equity method: Affiliates ¥ 537,702 ¥ 544,563 Joint ventures 353,300 422,841 Total ¥ 891,002 ¥ 967,404 Honda’s equity of undistributed earnings: Affiliates ¥ 198,432 ¥ 177,231 Joint ventures 262,599 279,288 Total ¥ 461,031 ¥ 456,519 Honda’s share of comprehensive income of affiliates and joint ventures for the years ended March 31, 2020, 2021 and 2022 is as follows: Yen (millions) 2020 2021 2022 Profit for the year: Affiliates ¥ (434 ) ¥ 53,511 ¥ (17,844 ) Joint ventures 164,637 219,223 220,356 Total ¥ 164,203 ¥ 272,734 ¥ 202,512 Other comprehensive income: Affiliates ¥ (5,758 ) ¥ (1,197 ) ¥ 26,673 Joint ventures (26,185 ) 33,457 52,560 Total ¥ (31,943 ) ¥ 32,260 ¥ 79,233 Comprehensive income for the year: Affiliates ¥ (6,192 ) ¥ 52,314 ¥ 8,829 Joint ventures 138,452 252,680 272,916 Total ¥ 132,260 ¥ 304,994 ¥ 281,745 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 consolidated financial information of Dongfeng Honda Automobile Co., Ltd. as of March , and is as follows: Yen (millions) 2021 2022 Current assets ¥ 687,417 ¥ 747,397 Non-current 238,507 252,219 Total assets 925,924 999,616 Current liabilities 608,408 610,379 Non-current 32,860 34,182 Total liabilities 641,268 644,561 Total equity ¥ 284,657 ¥ 355,055 Honda’s share of total equity (50%) 142,328 177,527 Equity method adjustments (1,212 ) (697 ) Carrying amount of its interest in the joint venture ¥ 141,116 ¥ 176,830 Cash and cash equivalents included in current assets ¥ 332,031 ¥ 301,839 Financial liabilities (excluding trade payables and provisions) included in current liabilities 5,363 6,168 Summarized consolidated financial information of Dongfeng Honda Automobile Co., Ltd. for the years ended March 31, 2020, 2021 and 2022 is as follows: Yen (millions) 2020 2021 2022 Sales revenue ¥ 1,516,160 ¥ 2,201,051 ¥ 1,994,534 Interest income 8,019 9,412 10,653 Depreciation and amortization 18,870 23,055 25,996 Income tax expense 48,622 65,102 60,868 Profit for the year 130,327 197,217 182,989 Other comprehensive income (21,100 ) 25,462 44,812 Comprehensive income for the year ¥ 109,227 ¥ 222,679 ¥ 227,801 Comprehensive income for the year (50%) 54,614 111,340 113,901 Equity method adjustments 53 53 607 Honda’s share of comprehensive income for the year ¥ 54,667 ¥ 111,393 ¥ 114,508 Dividend from the joint venture to Honda ¥ 72,760 ¥ 102,767 ¥ 79,191 Combined financial information in respect of affiliates as of March 31, 2021 and 2022, and for the years ended March 31, 2020, 2021 and 2022 is as follows: Yen (millions) For the year ended March 31, 2020 Motorcycle Automobile Life Creation Total Sales revenue ¥ 160,557 ¥ 2,505,819 ¥ 7,342 ¥ 2,673,718 Profit for the year 8,094 69,339 914 78,347 Yen (millions) As of and for the year ended March 31, 2021 Motorcycle Automobile Life Creation Total Current assets ¥ 54,369 ¥ 1,458,252 ¥ 11,813 ¥ 1,524,434 Non-current 27,677 1,952,423 21,709 2,001,809 Total assets 82,046 3,410,675 33,522 3,526,243 Current liabilities 25,399 1,015,374 3,140 1,043,913 Non-current 3,167 616,924 1,180 621,271 Total liabilities 28,566 1,632,298 4,320 1,665,184 Total equity ¥ 53,480 ¥ 1,778,377 ¥ 29,202 ¥ 1,861,059 Sales revenue ¥ 122,605 ¥ 1,933,675 ¥ 6,331 ¥ 2,062,611 Profit for the year 2,552 2,593 843 5,988 Yen (millions) As of and for the year ended March 31, 2022 Motorcycle Automobile Life Creation Total Current assets ¥ 64,324 ¥ 1,542,414 ¥ 14,313 ¥ 1,621,051 Non-current 28,330 2,030,822 22,928 2,082,080 Total assets 92,654 3,573,236 37,241 3,703,131 Current liabilities 25,819 1,013,738 3,768 1,043,325 Non-current 5,003 583,308 1,065 589,376 Total liabilities 30,822 1,597,046 4,833 1,632,701 Total equity ¥ 61,832 ¥ 1,976,190 ¥ 32,408 ¥ 2,070,430 Sales revenue ¥ 173,696 ¥ 3,120,190 ¥ 7,146 ¥ 3,301,032 Profit for the year 7,233 73,169 996 81,398 Combined financial information in respect of joint ventures as of March 31, 2021 and 2022, and for the years ended March 31, 2020, 2021 and 2022 is as follows: Yen (millions) For the year ended March 31, 2020 Motorcycle Automobile Life Creation Total Sales revenue ¥ 791,250 ¥ 3,483,024 ¥ 6,413 ¥ 4,280,687 Profit for the year 63,819 264,216 568 328,603 Yen (millions) As of and for the year ended March 31, 2021 Motorcycle Automobile Life Creation Total Current assets ¥ 221,524 ¥ 1,548,875 ¥ 4,120 ¥ 1,774,519 Non-current 120,238 423,270 704 544,212 Total assets 341,762 1,972,145 4,824 2,318,731 Current liabilities 191,565 1,334,240 1,305 1,527,110 Non-current 17,035 61,312 879 79,226 Total liabilities 208,600 1,395,552 2,184 1,606,336 Total equity ¥ 133,162 ¥ 576,593 ¥ 2,640 ¥ 712,395 Sales revenue ¥ 543,504 ¥ 4,839,927 ¥ 3,443 ¥ 5,386,874 Profit for the year 33,115 403,088 174 436,377 Yen (millions) As of and for the year ended March 31, 2022 Motorcycle Automobile Life Creation Total Current assets ¥ 272,962 ¥ 1,810,581 ¥ 4,771 ¥ 2,088,314 Non-current 130,271 479,707 909 610,887 Total assets 403,233 2,290,288 5,680 2,699,201 Current liabilities 227,215 1,513,623 1,704 1,742,542 Non-current 17,769 70,675 665 89,109 Total liabilities 244,984 1,584,298 2,369 1,831,651 Total equity ¥ 158,249 ¥ 705,990 ¥ 3,311 ¥ 867,550 Sales revenue ¥ 811,764 ¥ 4,612,394 ¥ 3,940 ¥ 5,428,098 Profit for the year 62,907 375,642 363 438,912 The amounts of a joint venture that is material to the Company are included in above. (Management Integration) Through tender offers (the “Tender Offers”) targeting our former affiliates accounted for using the equity method which were Keihin Corporation, Showa Corporation and Nissin Kogyo Co., Ltd. (collectively, the “Target Companies”) conducted by Honda from September 2, 2020 to October 15, 2020 and the subsequent procedures for demand for sale of shares pursuant to the provisions of Article 179 of the Company Law of Japan, Honda has obtained 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) for the year ended March 31, 2021. In accordance with the basic contract agreed between Hitachi, Ltd., Hitachi Automotive Systems, Ltd. (“Hitachi Automotive Systems”) which is a consolidated subsidiary of Hitachi, Ltd., the Target Companies and Honda on October 30, 2019 to conduct a management integration, agreements of absorption-type merger in which Hitachi Automotive Systems will be the surviving company, and the Target Companies will be the disappearing companies (the “Absorption-type Merger”) were respectively concluded between each of the Target Companies and Hitachi Automotive Systems on November 18, 2020. In the Absorption-type Merger, common shares of the surviving company after the Absorption-type Merger (the “Integrated Company”) were 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. On January 1, 2021, the effective date of Absorption-type Merger, the Integrated Company became our affiliate accounted for using the equity method. As of the same date, the Integrated Company changed its name to “Hitachi Astemo, Ltd.” Prior to the effective date of the Absorption-type Merger, in order to have the ratio of the total share value of the Target Companies to Hitachi Automotive Systems’ share value correspond to the above merger ratio, the share values of the Target Companies had been adjusted through acquisitions of treasury shares by the Target Companies. For the year ended March 31, 2021, upon the successful completion of the Tender Offers for the Target Companies, the Company recognized reversal of impairment losses of ¥56,849 million which had been previously recognized on the investments in certain Target Companies accounted for using the equity method, based on quoted market values which had increased since the announcement of the Tender Offers. 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 year ended March 31, 2020 and 2022, the Company did not recognize any significant reversal of impairment losses.

Property, Plant and Equipment

Property, Plant and Equipment	12 Months Ended
	Mar. 31, 2022
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, 2021 and 2022 are as follows: (Cost) Yen (millions) Balance as of April 1, 2020 ¥ 5,903,574 Additions ¥ 2,001,898 Sales or disposal (1,777,101 ) Exchange differences on translating foreign operations 174,338 Other — Balance as of March 31, 2021 ¥ 6,302,709 Additions ¥ 2,026,098 Sales or disposal (2,171,117 ) Exchange differences on translating foreign operations 509,447 Other — Balance as of March 31, 2022 ¥ 6,667,137 (Accumulated depreciation and impairment losses) Yen (millions) Balance as of April 1, 2020 ¥ (1,277,511 ) Depreciation ¥ (821,963 ) Sales or disposal 740,627 Exchange differences on translating foreign operations (40,267 ) Other 16,321 Balance as of March 31, 2021 ¥ (1,382,793 ) Depreciation ¥ (879,196 ) Sales or disposal 856,835 Exchange differences on translating foreign operations (100,982 ) Other (1,872 ) Balance as of March 31, 2022 ¥ (1,508,008 ) (Carrying amount) Yen (millions) Balance as of March 31, 2021 ¥ 4,919,916 Balance as of March 31, 2022 5,159,129 (Future lease payments) Future lease payments expected to be received under the operating leases by maturity as of March 31, 2021 and 2022 consist of the following: Yen (millions) 2021 2022 Within 1 year ¥ 818,025 ¥ 824,769 Between 1 and 2 years 571,632 574,536 Between 2 and 3 years 271,863 240,437 Between 3 and 4 years 86,070 84,911 Between 4 and 5 years 25,488 27,796 Later than 5 years 554 — Total ¥ 1,773,632 ¥ 1,752,449 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 years ended March 31, 2021 and 2022 are ¥1,069,374 million and ¥1,134,898 million, respectively.
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, 2021 and 2022 are as follows: (Cost) Yen (millions) Land Buildings and Machinery and Construction in Total Balance as of April 1, 2020 ¥ 615,687 ¥ 2,468,194 ¥ 5,441,813 ¥ 222,273 ¥ 8,747,967 Additions 8,534 28,538 79,952 273,057 390,081 Reclassification 1,305 50,529 233,463 (285,297 ) — Sales or disposal (3,469 ) (30,366 ) (208,700 ) — (242,535 ) Exchange differences on translating foreign operations 6,735 47,479 143,683 7,287 205,184 Other (68 ) (5,469 ) (3,094 ) (122 ) (8,753 ) Balance as of March 31, 2021 ¥ 628,724 ¥ 2,558,905 ¥ 5,687,117 ¥ 217,198 ¥ 9,091,944 Additions 8,473 26,268 102,835 229,253 366,829 Reclassification 387 28,766 199,242 (228,395 ) — Sales or disposal (4,151 ) (33,722 ) (275,348 ) — (313,221 ) Exchange differences on translating foreign operations 11,585 123,536 429,662 21,124 585,907 Other 454 (5,487 ) 4,421 (1,606 ) (2,218 ) Balance as of March 31, 2022 ¥ 645,472 ¥ 2,698,266 ¥ 6,147,929 ¥ 237,574 ¥ 9,729,241 (Accumulated depreciation and impairment losses) Yen (millions) Land Buildings and Machinery and Construction in Total Balance as of April 1, 2020 ¥ (10,517 ) ¥ (1,394,982 ) ¥ (4,288,929 ) ¥ (1,835 ) ¥ (5,696,263 ) Depreciation (6,118 ) (89,997 ) (331,948 ) — (428,063 ) Sales or disposal 2,031 16,569 181,325 — 199,925 Exchange differences on translating foreign operations (263 ) (27,643 ) (113,736 ) (154 ) (141,796 ) Other (1,742 ) (260 ) (2,132 ) (99 ) (4,233 ) Balance as of March 31, 2021 ¥ (16,609 ) ¥ (1,496,313 ) ¥ (4,555,420 ) ¥ (2,088 ) ¥ (6,070,430 ) Depreciation (7,087 ) (88,928 ) (342,254 ) — (438,269 ) Sales or disposal 1,403 22,920 251,628 — 275,951 Exchange differences on translating foreign operations (235 ) (68,557 ) (344,775 ) (19 ) (413,586 ) Other (391 ) (2,324 ) (1,889 ) 1,104 (3,500 ) Balance as of March 31, 2022 ¥ (22,919 ) ¥ (1,633,202 ) ¥ (4,992,710 ) ¥ (1,003 ) ¥ (6,649,834 ) (Carrying amount) Yen (millions) Land Buildings and Machinery and Construction in Total Balance as of March 31, 2021 ¥ 612,115 ¥ 1,062,592 ¥ 1,131,697 ¥ 215,110 ¥ 3,021,514 Balance as of March 31, 2022 622,553 1,065,064 1,155,219 236,571 3,079,407 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, 2020 ¥ 77,916 ¥ 142,521 ¥ 85,605 ¥ 306,042 Additions 8,488 24,270 36,029 68,787 Depreciation (6,118 ) (12,997 ) (43,088 ) (62,203 ) Other 257 (18,491 ) 938 (17,296 ) Balance as of March 31, 2021 ¥ 80,543 ¥ 135,303 ¥ 79,484 ¥ 295,330 Additions 8,283 18,952 61,189 88,424 Depreciation (7,087 ) (15,882 ) (45,326 ) (68,295 ) Other (102 ) (8,192 ) 535 (7,759 ) Balance as of March 31, 2022 ¥ 81,637 ¥ 130,181 ¥ 95,882 ¥ 307,700

Intangible Assets

Intangible Assets	12 Months Ended
	Mar. 31, 2022
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, 2021 and 2022 are as follows: (Cost) Yen (millions) Capitalized Software Other Total Balance as of April 1, 2020 ¥ 1,083,525 ¥ 392,732 ¥ 46,190 ¥ 1,522,447 Additions ¥ — ¥ 19,233 ¥ 11,236 ¥ 30,469 Internally developed 201,889 11,554 — 213,443 Sales or disposal (180,744 ) (6,028 ) (1,429 ) (188,201 ) Exchange differences on translating foreign operations 3,946 10,655 3,491 18,092 Other — 1,076 1,417 2,493 Balance as of March 31, 2021 ¥ 1,108,616 ¥ 429,222 ¥ 60,905 ¥ 1,598,743 Additions ¥ — ¥ 8,597 ¥ 11,235 ¥ 19,832 Internally developed 159,174 20,311 — 179,485 Sales or disposal (118,065 ) (15,760 ) (12,966 ) (146,791 ) Exchange differences on translating foreign operations 6,565 22,365 6,057 34,987 Other — (2,484 ) (339 ) (2,823 ) Balance as of March 31, 2022 ¥ 1,156,290 ¥ 462,251 ¥ 64,892 ¥ 1,683,433 (Accumulated amortization and impairment losses) Yen (millions) Capitalized Software Other Total Balance as of April 1, 2020 ¥ (456,333 ) ¥ (293,356 ) ¥ (12,324 ) ¥ (762,013 ) Amortization ¥ (144,795 ) ¥ (29,646 ) ¥ (651 ) ¥ (175,092 ) Sales or disposal 180,744 3,504 832 185,080 Exchange differences on translating foreign operations (906 ) (8,010 ) (873 ) (9,789 ) Other (15,923 ) (1,596 ) (647 ) (18,166 ) Balance as of March 31, 2021 ¥ (437,213 ) ¥ (329,104 ) ¥ (13,663 ) ¥ (779,980 ) Amortization ¥ (129,384 ) ¥ (29,290 ) ¥ (769 ) ¥ (159,443 ) Sales or disposal 118,065 15,003 3,447 136,515 Exchange differences on translating foreign operations (1,288 ) (17,442 ) (906 ) (19,636 ) Other (12,821 ) 1,364 75 (11,382 ) Balance as of March 31, 2022 ¥ (462,641 ) ¥ (359,469 ) ¥ (11,816 ) ¥ (833,926 ) (Carrying amount) Yen (millions) Capitalized Software Other Total Balance as of March 31, 2021 ¥ 671,403 ¥ 100,118 ¥ 47,242 ¥ 818,763 Balance as of March 31, 2022 693,649 102,782 53,076 849,507 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, 2022
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, 2021 and 2022 consist of the following: Yen (millions) 2021 2022 Trade accounts and notes payable ¥ 943,833 ¥ 1,047,623 Other 144,228 188,610 Total ¥ 1,088,061 ¥ 1,236,233

Financing Liabilities

Financing Liabilities	12 Months Ended
	Mar. 31, 2022
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, 2021 and 2022 consist of the following: Yen (millions) 2021 2022 Current: Commercial paper ¥ 839,292 ¥ 421,801 Loans 424,788 434,675 Asset-backed securities 35,267 50,067 Subtotal ¥ 1,299,347 ¥ 906,543 Reclassification from non-current ¥ 1,706,277 ¥ 2,211,761 Total ¥ 3,005,624 ¥ 3,118,304 The weighted average interest rates for financing liabilities presented in current liabilities (excluding reclassification from non-current 2021 2022 Weighted average interest rate 0.50 % 1.01 % Financing liabilities presented in non-current Yen (millions) 2021 2022 Non-current: Loans ¥ 1,028,836 ¥ 1,026,769 Medium-term notes 3,701,153 3,996,486 Corporate bonds 657,068 1,035,379 Asset-backed securities 1,034,581 1,137,379 Subtotal ¥ 6,421,638 ¥ 7,196,013 Reclassification to current liabilities (Current portion) ¥ (1,706,277 ) ¥ (2,211,761 ) Total ¥ 4,715,361 ¥ 4,984,252 The interest rate range and payment due date for financing liabilities presented in non-current liabilities (including reclassification to current liabilities) as of March 31, 202 1 2 2021 2022 Loans Interest rate: 0.07% - 11.00% Due: 2021 - 2046 Interest rate: 0.07% - 11.75% Due: 2022 Medium-term notes Interest rate: 0.33% - 3.80% Due: 2021 - 2031 Interest rate: 0.30% - 3.63% Due: 2022 - 2031 Corporate bonds Interest rate: 0.01% - 1.17% Due: 2021 - 2027 Interest rate: 0.01% - 2.97% Due: 2022 - 2032 Asset-backed securities Interest rate: 0.11% - 3.30% Due: 2021 - 2025 Interest rate: 0.11% - 3.30% Due: 2022 - 2025 (Pledged assets) Pledged assets for financing liabilities as of March 31, 2021 and 2022 Yen (millions) 2021 2022 Trade receivables ¥ 19,789 ¥ 15,298 Receivables from financial services 1,086,786 1,101,778 Equipment on operating leases 122,320 142,097 Property, plant and equipment 2,138 2,548 Total ¥ 1,231,033 ¥ 1,261,721 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, 2020, 2021 and 2022 are as follows: For the year ended March 31, 2020 Yen (millions) Balance 2019 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 For the year ended March 31, 2021 Yen (millions) Balance Cash flows Cash flows Non-cash Balance Acquisitions Changes Changes Other Short-term financing liabilities ¥ 1,424,667 ¥ (179,512 ) ¥ — ¥ — ¥ 55,337 ¥ — ¥ (1,145 ) ¥ 1,299,347 Long-term financing liabilities 6,045,019 149,807 — — 222,565 — 4,247 6,421,638 Lease liabilities 330,040 (67,628 ) — 67,716 4,346 — (17,045 ) 317,429 Derivative financial liabilities (assets) *2 11,615 599 (5,446 ) — (1,705 ) (38,946 ) — (33,883 ) Total ¥ 7,811,341 ¥ (96,734 ) ¥ (5,446 ) ¥ 67,716 ¥ 280,543 ¥ (38,946 ) ¥ (13,943 ) ¥ 8,004,531 For the year ended March 31, 2022 Yen (millions) Balance Cash flows Cash flows Non-cash Balance Acquisitions Changes Changes Other Short-term financing liabilities ¥ 1,299,347 ¥ (472,420 ) ¥ — ¥ — ¥ 78,863 ¥ — ¥ 753 ¥ 906,543 Long-term financing liabilities 6,421,638 238,060 — — 526,822 — 9,493 7,196,013 Lease liabilities 317,429 (80,165 ) — 84,413 6,096 — (9,015 ) 318,758 Derivative financial liabilities (assets) *2 (33,883 ) 3,202 (1,296 ) — 3,217 67,396 — 38,636 Total ¥ 8,004,531 ¥ (311,323 ) ¥ (1,296 ) ¥ 84,413 ¥ 614,998 ¥ 67,396 ¥ 1,231 ¥ 8,459,950 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. *2 Derivative financial liabilities (assets) are held by the Company and its

Other Financial Liabilities

Other Financial Liabilities	12 Months Ended
	Mar. 31, 2022
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Other Financial Liabilities	(16) Other Financial Liabilities Other financial liabilities as of March 31, 2021 and 2022 consist of the following: Yen (millions) 2021 2022 Financial liabilities measured at amortized cost ¥ 63,269 ¥ 48,283 Financial liabilities measured at fair value through profit or loss: Derivatives 82,256 151,942 Lease liabilities 317,429 318,758 Total ¥ 462,954 ¥ 518,983 Current liabilities ¥ 182,145 ¥ 236,900 Non-current 280,809 282,083 Total ¥ 462,954 ¥ 518,983

Provisions

Provisions	12 Months Ended
	Mar. 31, 2022
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Provisions	(17) Provisions The components of and changes in provisions for the year ended March 31, 2022 Yen (millions) Product Other Total Balance as of April 1, 2021 ¥ 481,023 ¥ 160,018 ¥ 641,041 Provision ¥ 118,378 ¥ 23,329 ¥ 141,707 Write-offs (172,754 ) (88,823 ) (261,577 ) Reversal (36,882 ) (1,604 ) (38,486 ) Exchange differences on translating foreign operations 29,436 9,892 39,328 Balance as of March 31, 2022 ¥ 419,201 ¥ 102,812 ¥ 522,013 Current liabilities and non-current Yen (millions) 2021 2022 Current liabilities ¥ 362,151 ¥ 268,388 Non-current 278,890 253,625 Total ¥ 641,041 ¥ 522,013 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, 2022
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Employee Benefits	(18) Employee Benefits (a) Post-employment Benefits Honda has various 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 of the Fund and the decisions made by the Board of Representatives of the Fund. The Company is required to make contributions to the Fund and obligated to make contributions in the amount stipulated by the Fund. Contributions are also regularly reviewed and adjusted as necessary to the extent permitted by laws and regulations. Certain consolidated subsidiaries in North America amended their health care benefits which are provided to retired employees to eliminate certain plans and reduce the scope of the persons eligible for the benefits, and implemented a voluntary retirement opportunity program to streamline the workforce with the future of Honda’s business for the year ended March 31, 2021. The plan amendment and the implementation of the voluntary retirement opportunity program resulted in recognition of the past service cost to profit or loss for the year ended March 31, 2021. 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, 2021 and 2022 are as follows: Yen (millions) 2021 2022 Japanese plans Foreign plans Japanese plans Foreign plans Present value of defined benefit obligations: Balance at beginning of year ¥ 1,357,044 ¥ 1,143,911 ¥ 1,305,054 ¥ 1,104,894 Current service cost 35,751 27,158 35,045 22,351 Past service cost — 9,941 — — Interest cost 7,530 29,445 8,360 29,822 Plan participants’ contributions — 3,764 — 3,657 Remeasurements: Changes in demographic assumptions (30,860 ) (11,669 ) 6,346 (777 ) Changes in financial assumptions (17,606 ) 51,885 (25,500 ) (85,754 ) Other 1,654 (7,040 ) 5,502 (3,603 ) Benefits paid (48,459 ) (200,249 ) (72,562 ) (82,561 ) Exchange differences on translating foreign operations — 57,748 — 99,497 Balance at end of year ¥ 1,305,054 ¥ 1,104,894 ¥ 1,262,245 ¥ 1,087,526 Fair value of plan assets: Balance at beginning of year ¥ 1,187,881 ¥ 848,503 ¥ 1,365,509 ¥ 910,436 Interest income 6,645 22,458 8,865 24,981 Actual return on plan assets, excluding interest income 194,475 126,176 21,172 50,833 Employer contributions 21,770 49,487 20,484 17,404 Plan participants’ contributions — 3,764 — 3,657 Benefits paid (45,262 ) (200,249 ) (60,754 ) (82,561 ) Exchange differences on translating foreign operations — 60,297 — 88,300 Balance at end of year ¥ 1,365,509 ¥ 910,436 ¥ 1,355,276 ¥ 1,013,050 Effects of asset ceiling — 2,774 — 35,321 Net defined benefit liabilities (assets) ¥ (60,455 ) ¥ 197,232 ¥ (93,031 ) ¥ 109,797 Retirement benefit assets included in net defined benefit liabilities (assets) as of March 31, 2021 and 2022 are ¥ million and ¥ million, respectively, which are presented in other non-current 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 equity and debt securities using target asset allocations, consistent with accepted tolerance for risks. Honda sets target asset allocations for each asset category with future anticipated performance over medium-to-long The fair value of the Japanese and foreign pension plan assets by asset category as of March 31, 2021 and 2022 is as follows: As of March 31, 2021 Yen (millions) Japanese plans Foreign plans Market price in active Market price in active Quoted Unquoted Total Quoted Unquoted Total Cash and cash equivalents ¥ 17,708 ¥ — ¥ 17,708 ¥ 17,736 ¥ — ¥ 17,736 Equity securities: Japan 37,137 28 37,165 11,099 — 11,099 United States 278,052 105 278,157 71,125 — 71,125 Other 285,412 239 285,651 41,302 — 41,302 Debt securities: Japan 63,856 — 63,856 — 343 343 United States 3,867 151,484 155,351 — 45,842 45,842 Other 168,460 64,850 233,310 — 8,697 8,697 Group annuity insurance: General accounts — 38,822 38,822 — — — Separate accounts — 20,290 20,290 — — — Pooled funds: Real estate funds — 404 404 — 68,686 68,686 Private equity funds — — — — 148,038 148,038 Hedge funds — 129,796 129,796 — 36,247 36,247 Commingled and other mutual funds 2,309 119,493 121,802 7,197 401,755 408,952 Other 112 (16,915 ) (16,803 ) 541 51,828 52,369 Total ¥ 856,913 ¥ 508,596 ¥ 1,365,509 ¥ 149,000 ¥ 761,436 ¥ 910,436 As of March 31, 2022 Yen (millions) Japanese plans Foreign plans Market price in active Market price in active Quoted Unquoted Total Quoted Unquoted Total Cash and cash equivalents ¥ 56,192 ¥ — ¥ 56,192 ¥ 15,147 ¥ — ¥ 15,147 Equity securities: Japan 32,349 — 32,349 9,483 — 9,483 United States 260,424 58 260,482 72,349 — 72,349 Other 248,143 276 248,419 51,606 — 51,606 Debt securities: Japan 65,388 — 65,388 — 575 575 United States 2,795 150,494 153,289 — 81,155 81,155 Other 173,477 71,516 244,993 — 7,100 7,100 Group annuity insurance: General accounts — 40,008 40,008 — — — Separate accounts — 22,317 22,317 — — — Pooled funds: Real estate funds — 402 402 — 87,540 87,540 Private equity funds — — — — 191,196 191,196 Hedge funds — 145,474 145,474 — 34,341 34,341 Commingled and other mutual funds 1,798 129,080 130,878 4,732 425,668 430,400 Other 67 (44,982 ) (44,915 ) 61 32,097 32,158 Total ¥ 840,633 ¥ 514,643 ¥ 1,355,276 ¥ 153,378 ¥ 859,672 ¥ 1,013,050 3) Actuarial assumptions The significant actuarial assumptions used to determine the present value of defined benefit obligations as of March 31, 2021 and 2022 are as follows: 2021 2022 Japanese plans Foreign plans Japanese plans Foreign plans Discount rate 0.7 % 2.1 - 3.4 % 0.8 % 2.8 - 4.0 % Rate of salary increase 1.5 % 2.0 - 3.1 % 1.5 % 2.0 - 3.6 % 4) Sensitivity analysis The effects on defined benefit obligations of 0.5% increase or decrease in the discount rate as of March 31, 2021 and 2022 are as follows: Yen (millions) 2021 2022 Japanese plans Foreign plans Japanese plans Foreign plans 0.5% decrease ¥ 99,814 increase ¥ 103,059 increase ¥ 93,079 increase ¥ 86,569 increase 0.5% increase ¥ 88,788 decrease ¥ 91,523 decrease ¥ 83,077 decrease ¥ 78,153 decrease This sensitivity analysis shows changes in defined benefit obligations as of March 31, 2021 and 2022, 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 ¥19,919 million to its Japanese pension plans and ¥21,057 million to its foreign pension plans in the year ending March 31, 2023. The weighted average duration of defined benefit obligations as of March 31, 2021 and 2022 are as follows: 2021 2022 Japanese plans Foreign plans Japanese plans Foreign plans Weighted average duration of defined benefit obligations 14 years 17 years 14 years 14 years (b) Personnel Expenses Personnel expenses included in the consolidated statements of income for the years ended March 31, 2020, 2021 and 2022 are as follows: Yen (millions) 2020 2021 2022 Personnel expenses ¥ 1,605,553 ¥ 1,470,748 ¥ 1,502,364 Personnel expenses include salaries, bonuses, social security expenses and expenses relating to post-employment benefits.

Equity

Equity	12 Months Ended
	Mar. 31, 2022
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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, 2021 and 2022 are as follows: Yen (millions) 2021 2022 Financing liabilities ¥ 7,720,985 ¥ 8,102,556 Equity 9,372,839 10,772,546 (b) Common Stock The Company’s total number of shares authorized and issued for the years ended March 31, 2020, 2021 and 2022 are as follows: Shares 2020 2021 2022 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, 2020, 2021 and 2022 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, 2020, 2021 and 2022 is as follows: Shares 2020 2021 2022 Common shares 84,818,644 84,773,162 100,828,074 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, 2020, 2021 and 2022 are as follows: Yen (millions) Remeasurements of Net changes in revaluation of Exchange differences Total Balance as of April 1, 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 ) Adjustment during the year ¥ 239,801 ¥ 69,876 ¥ 247,655 ¥ 557,332 Reclassification to retained earnings (239,801 ) (6,182 ) — (245,983 ) Balance as of March 31, 2021 ¥ — ¥ 88,570 ¥ 108,140 ¥ 196,710 Adjustment during the year ¥ 117,489 ¥ 58,863 ¥ 736,578 ¥ 912,930 Reclassification to retained earnings (117,489 ) (1,713 ) — (119,202 ) Balance as of March 31, 2022 ¥ — ¥ 145,720 ¥ 844,718 ¥ 990,438 (f) Other Comprehensive Income Each component of other comprehensive income and related tax effect including non-controlling 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 ) For the year ended March 31, 2021 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 ¥ 327,604 ¥ (89,342 ) ¥ 238,262 Net changes 327,604 (89,342 ) 238,262 Net changes in revaluation of financial assets measured at fair value through other comprehensive income: Amount incurred during the year 93,450 (25,847 ) 67,603 Net changes 93,450 (25,847 ) 67,603 Share of other comprehensive income of investments accounted for using the equity method: Amount incurred during the year 5,186 (276 ) 4,910 Net changes 5,186 (276 ) 4,910 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 (107 ) 1 (106 ) Reclassification to profit or loss 82 (19 ) 63 Net changes (25 ) (18 ) (43 ) Exchange differences on translating foreign operations: Amount incurred during the year 239,097 — 239,097 Reclassification to profit or loss — — — Net changes 239,097 — 239,097 Share of other comprehensive income of investments accounted for using the equity method: Amount incurred during the year 27,046 377 27,423 Reclassification to profit or loss (73 ) — (73 ) Net changes 26,973 377 27,350 Total other comprehensive income ¥ 692,285 ¥ (115,106 ) ¥ 577,179 For the year ended March 31, 2022 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 ¥ 153,785 ¥ (36,743 ) ¥ 117,042 Net changes 153,785 (36,743 ) 117,042 Net changes in revaluation of financial assets measured at fair value through other comprehensive income: Amount incurred during the year 76,909 (18,274 ) 58,635 Net changes 76,909 (18,274 ) 58,635 Share of other comprehensive income of investments accounted for using the equity method: Amount incurred during the year 1,862 (76 ) 1,786 Net changes 1,862 (76 ) 1,786 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 (915 ) 203 (712 ) Reclassification to profit or loss 39 (9 ) 30 Net changes (876 ) 194 (682 ) Exchange differences on translating foreign operations: Amount incurred during the year 680,724 — 680,724 Reclassification to profit or loss — — — Net changes 680,724 — 680,724 Share of other comprehensive income of investments accounted for using the equity method: Amount incurred during the year 79,484 (1,972 ) 77,512 Reclassification to profit or loss (65 ) — (65 ) Net changes 79,419 (1,972 ) 77,447 Total other comprehensive income ¥ 991,823 ¥ (56,871 ) ¥ 934,952 The components of other comprehensive income included in non-controlling Yen (millions) 2020 2021 2022 Items that will not be reclassified to profit or loss: Remeasurements of defined benefit plans ¥ (753 ) ¥ 1,030 ¥ 565 Net changes in revaluation of financial assets measured at fair value through other comprehensive income (73 ) 25 (136 ) Items that may be reclassified subsequently to profit or loss: Exchange differences on translating foreign operations (18,924 ) 18,792 21,593 Total ¥ (19,750 ) ¥ 19,847 ¥ 22,022 (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, 2020, 2021 and 2022 are as follows: 1) Dividend payout 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 For the year ended March 31, 2021 Resolution The Board of Directors Meeting on May 12, 2020 Type of shares Common shares 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 Resolution The Board of Directors Meeting on August 5, 2020 Type of shares Common shares Total amount of dividends (millions of yen) 18,999 Dividend per share (yen) 11.00 Record date June 30, 2020 Effective date September 4, 2020 Resolution The Board of Directors Meeting on November 6, 2020 Type of shares Common shares Total amount of dividends (millions of yen) 32,818 Dividend per share (yen) 19.00 Record date September 30, 2020 Effective date December 2, 2020 Resolution The Board of Directors Meeting on February 9, 2021 Type of shares Common shares Total amount of dividends (millions of yen) 44,909 Dividend per share (yen) 26.00 Record date December 31, 2020 Effective date March 8, 2021 For the year ended March 31, 2022 Resolution The Board of Directors Meeting on May 1 4 Type of shares Common shares Total amount of dividends (millions of yen) 93,272 Dividend per share (yen) 54.00 Record date March 31, 2021 Effective date June 7 Resolution The Board of Directors Meeting on November 5 Type of shares Common shares Total amount of dividends (millions of yen) 95,130 Dividend per share (yen) 55.00 Record date September 30, 2021 Effective date December 1 2) Dividends payable of which record date was in the year ended March 31, 2022, effective after the period Resolution The Board of Directors Meeting on May 13 Type of shares Common shares Resource for dividend Retained earnings Total amount of dividends (millions of yen) 111,256 Dividend per share (yen) 65.00 Record date March 31, 2022 Effective date June 6

Sales Revenue

Sales Revenue	12 Months Ended
	Mar. 31, 2022
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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 reportable segments for the years ended March 31, 2020, 2021 and 2022 are as follows: 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 For the year ended March 31, 2021 Yen (millions) Motorcycle Automobile Financial Life Total Revenue arising from contracts with customers Japan ¥ 88,128 ¥ 1,321,329 ¥ 128,265 ¥ 59,249 ¥ 1,596,971 North America 197,155 4,671,998 1,049,739 133,641 6,052,533 Europe 146,948 290,326 — 63,262 500,536 Asia 1,147,539 2,032,469 1 47,465 3,227,474 Other Regions 205,142 238,509 — 17,785 461,436 Total ¥ 1,784,912 ¥ 8,554,631 ¥ 1,178,005 ¥ 321,402 ¥ 11,838,950 Revenue arising from the other sources* 2,371 12,574 1,316,289 335 1,331,569 Total ¥ 1,787,283 ¥ 8,567,205 ¥ 2,494,294 ¥ 321,737 ¥ 13,170,519 For the year ended March 31, 2022 Yen (millions) Motorcycle Automobile Financial Life Total Revenue arising from contracts with customers Japan ¥ 105,022 ¥ 1,337,860 ¥ 146,185 ¥ 79,182 ¥ 1,668,249 North America 230,766 4,877,900 1,289,076 152,096 6,549,838 Europe 202,254 319,340 — 79,393 600,987 Asia 1,307,915 2,314,425 37 63,861 3,686,238 Other Regions 337,219 280,702 — 24,305 642,226 Total ¥ 2,183,176 ¥ 9,130,227 ¥ 1,435,298 ¥ 398,837 ¥ 13,147,538 Revenue arising from the other sources* 2,077 17,271 1,385,369 441 1,405,158 Total ¥ 2,185,253 ¥ 9,147,498 ¥ 2,820,667 ¥ 399,278 ¥ 14,552,696 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, 2021 and 2022 are as follows: Yen (millions) 2021 2022 Receivables from contracts with customers: Trade receivables ¥ 682,206 ¥ 785,157 Contract liabilities: Other current liabilities 232,580 261,049 Other noncurrent liabilities 169,684 193,845 The amounts of revenue recognized for the years ended March 31, 2020, 2021 and 2022 that were included in the contract liability balances at the beginning of the year are ¥186,581 million, ¥182,339 million and ¥199,902 million, (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, 2021 and 2022 are as follows: Yen (millions) 2021 2022 Within 1 year ¥ 113,924 ¥ 127,377 Between 1 and 5 years 197,037 221,282 Later than 5 years 11,436 15,748 Total ¥ 322,397 ¥ 364,407 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, 2021 and 2022 are as follows: Yen (millions) 2021 2022 Assets recognized from the costs to obtain a contract with a customer ¥ 103,887 ¥ 128,864 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, 2020, 2021 and 2022 are ¥ million, ¥ million and ¥ million,

Research and Development

Research and Development	12 Months Ended
	Mar. 31, 2022
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Research and Development	(21) Research and Development Research and development costs for the years ended March 31, 2020, 2021 and 2022 consist of the following: Yen (millions) 2020 2021 2022 Research and development expenditures incurred during the reporting period ¥ 821,478 ¥ 780,065 ¥ 804,025 Amount capitalized (192,397 ) (201,889 ) (159,174 ) Amortization and impairment losses of capitalized development costs 175,042 160,718 142,205 Total ¥ 804,123 ¥ 738,894 ¥ 787,056

Finance Income and Finance Cost

Finance Income and Finance Costs	12 Months Ended
	Mar. 31, 2022
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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, 2020, 2021 and 2022 Yen (millions) 2020 2021 2022 Interest income: Financial assets measured at amortized cost ¥ 47,679 ¥ 18,146 ¥ 22,847 Financial assets measured at fair value through other comprehensive income 249 196 185 Financial assets measured at fair value through profit or loss 1,484 1,463 2,595 Total 49,412 19,805 25,627 Interest expense: Financial liabilities measured at amortized cost (15,624 ) (12,269 ) (15,706 ) Other (9,065 ) (1,608 ) (1,161 ) Total (24,689 ) (13,877 ) (16,867 ) Other, net: Dividends received: Financial assets measured at fair value through other comprehensive income 5,169 3,372 4,777 Financial assets measured at fair value through profit or loss 25 0 — Gains (losses) on derivatives: Financial assets and financial liabilities measured at fair value through profit or loss (19,270 ) 15,102 (77,789 ) Gains (losses) on foreign exchange (24,942 ) (26,163 ) 68,033 Other 6,373 (17,128 ) (7,335 ) Total (32,645 ) (24,817 ) (12,314 ) Total ¥ (7,922 ) ¥ (18,889 ) ¥ (3,554 )

Income Taxes

Income Taxes	12 Months Ended
	Mar. 31, 2022
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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, 2020, 2021 and 2022 consist of the following: Yen (millions) 2020 2021 2022 Japan Foreign Total Japan Foreign Total Japan Foreign Total Profit (loss) before income taxes ¥ (63,390 ) ¥ 853,308 ¥ 789,918 ¥ (32,954 ) ¥ 947,007 ¥ 914,053 ¥ (42,213 ) ¥ 1,112,403 ¥ 1,070,190 Income tax expense (benefit): Current taxes 11,036 233,570 244,606 7,236 174,694 181,930 9,539 277,894 287,433 Deferred taxes 17,470 17,910 35,380 (21,228 ) 57,907 36,679 (4,081 ) 26,137 22,056 Total ¥ 28,506 ¥ 251,480 ¥ 279,986 ¥ (13,992 ) ¥ 232,601 ¥ 218,609 ¥ 5,458 ¥ 304,031 ¥ 309,489 The statutory income tax rate in Japan was approximately % for each of the years in the three-year period ended March 31, 202 2 % to %. The Japanese statutory income tax rate for the years ended March 31, 2020, 2021 and 2022 differs from the average effective tax rate for the following reasons: 2020 2021 2022 Statutory income tax rate 30.2 % 30.2 % 30.2 % Difference in statutory income tax rates of foreign subsidiaries (3.9 ) (5.2 ) (4.5 ) Effects of investments accounted for using the equity method (6.2 ) (9.0 ) (5.7 ) Effects of undistributed earnings and withholding taxes on royalty 8.6 7.8 7.1 Changes in unrecognized deferred tax assets 7.8 1.2 1.4 Effects of income and expense not taxable and deductible for tax purpose 0.8 0.3 0.0 Effects of tax credit (3.0 ) (1.4 ) (0.9 ) Other adjustments relating to prior years (0.7 ) (0.1 ) (0.1 ) Adjustments for the uncertain tax treatments on income taxes 0.2 (0.8 ) 0.9 Adjustments for the changes in income tax laws 2.3 0.1 0.1 Other (0.7 ) 0.8 0.4 Average effective tax rate 35.4 % 23.9 % 28.9 % (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, 2021 and 2022 are as follows: Yen (millions) 2021 2022 Deferred tax assets: Inventories ¥ 33,616 ¥ 44,029 Accrued expenses 61,376 36,567 Provisions 89,470 100,408 Property, plant and equipment 25,534 27,592 Intangible assets 11,170 12,017 Retirement benefit liabilities 82,072 67,120 Carryforward of unused tax losses 64,844 67,787 Carryforward of unused tax credit 36,020 22,285 Other 117,873 103,114 Total ¥ 521,975 ¥ 480,919 Deferred tax liabilities: Property, plant and equipment ¥ 77,338 ¥ 82,518 Intangible assets 194,083 195,542 Other financial assets 38,027 61,580 Operating leases 751,892 846,978 Undistributed earnings 53,173 59,650 Other* 149,911 133,813 Total ¥ 1,264,424 ¥ 1,380,081 Net deferred tax assets (liabilities) ¥ (742,449 ) ¥ (899,162 ) Explanatory note: * The amount s and 2022 are ¥ million and ¥68,772 million, respectively. 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, 2020, 2021 and 2022 are as follows: Yen (millions) 2020 2021 2022 Inventories ¥ 8,738 ¥ (3,920 ) ¥ (9,865 ) Provisions 22,185 (10,708 ) (3,491 ) Property, plant and equipment (3,503 ) (6,955 ) (3,738 ) Retirement benefit liabilities (assets) 7,258 (10,353 ) (4,991 ) Operating leases (3,697 ) 37,506 (35,308 ) Undistributed earnings (1,059 ) (2,885 ) 4,198 Carryforward of unused tax losses (6,378 ) (7,695 ) (1,608 ) Carryforward of unused tax credit (8,423 ) 15,695 16,102 Other* 20,259 25,994 60,757 Total ¥ 35,380 ¥ 36,679 ¥ 22,056 * The income tax expenses recognized due to the decrease of deferred tax assets arising from accrued expenses included in other as of March 31, 2022 is ¥27,321 million. 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, 2021 and 2022. 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 ¥19,647 million and ¥26,109 million as of March 31, 2021 and 2022, 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, 2021 and 2022 are as follows: Yen (millions) 2021 2022 Deductible temporary differences ¥ 519,457 ¥ 553,778 Carryforward of unused tax losses 514,420 693,323 Carryforward of unused tax credit 912 549 The components by expiry of the carryforward of unused tax losses for which deferred tax assets are not recognized as of March 31, 2021 and 2022 are as follows: Yen (millions) 2021 2022 Within 1 year ¥ 24,886 ¥ 3,603 Between 1 and 5 years 62,361 73,448 Between 5 and 20 years 246,941 256,340 Indefinite periods 180,232 359,932 Total ¥ 514,420 ¥ 693,323 The components by expiry of the carryforward of unused tax credit for which deferred tax assets are not recognized as of March 31, 2021 and 2022 are as follows: Yen (millions) 2021 2022 Within 1 year ¥ 349 ¥ 147 Between 1 and 5 years 371 259 Between 5 and 20 years 192 143 Indefinite periods — — Total ¥ 912 ¥ 549 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, 2021 and 2022 are ¥5,331,437 million and ¥6,323,299 million, respectively.

Earnings Per Share

Earnings Per Share	12 Months Ended
	Mar. 31, 2022
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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, 2020, 2021 and 2022 are calculated based on the following information. There were no significant dilutive potential common shares outstanding for the years ended March 31, 2020, 2021 and 2022. 2020 2021 2022 Profit for the year attributable to owners of the parent (millions of yen) ¥ 455,746 ¥ 657,425 ¥ 707,067 Weighted average number of common shares outstanding, basic (shares) 1,752,006,211 1,726,638,088 1,719,961,835 Basic earnings per share attributable to owners of the parent (yen) ¥ 260.13 ¥ 380.75 ¥ 411.09

Financial Risk Management

Financial Risk Management	12 Months Ended
	Mar. 31, 2022
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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, 2021 and 2022 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 . Yen (millions) 2021 2022 Impact on profit before income taxes ¥ (1,097) ¥ (1,780) 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, 2021 2022 The following scenario demonstrates the impact of a 100 basis point rise in interest Yen (millions) 2021 2022 Impact on profit before income taxes ¥ (18,354) ¥ (25,830) 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, 2022, 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, 2021 and 2022 is as follows: Yen (millions) As of March 31, 2021 Less than 30 days 30-59 days 60-89 days 90 days and Total Consumer finance receivables: Retail ¥ 174,464 ¥ 27,923 ¥ 7,058 ¥ 5,938 ¥ 215,383 Finance lease 71 18 21 374 484 Dealer finance receivables: Wholesale 16,807 779 28 79 17,693 Total ¥ 191,342 ¥ 28,720 ¥ 7,107 ¥ 6,391 ¥ 233,560 Yen (millions) As of March 31, 2022 Less than 30 days 30-59 days 60-89 days 90 days and Total Consumer finance receivables: Retail ¥ 204,661 ¥ 43,051 ¥ 11,452 ¥ 7,512 ¥ 266,676 Finance lease 200 51 7 324 582 Dealer finance receivables: Wholesale 9,661 36 4 23 9,724 Total ¥ 214,522 ¥ 43,138 ¥ 11,463 ¥ 7,859 ¥ 276,982 The balances of retail receivables included in consumer finance receivables as of March 31, 2021 and 2022 are as follows: Yen (millions) 12-month Lifetime ECL Total As of March 31, 2021 Not credit-impaired Credit-impaired Consumer finance receivables: Retail* ¥ 4,563,496 ¥ 271,762 ¥ 12,648 ¥ 4,847,906 Yen (millions) 12-month Lifetime ECL Total As of March 31, 2022 Not credit-impaired Credit-impaired Consumer finance receivables: Retail* ¥ 4,897,471 ¥ 139,306 ¥ 17,651 ¥ 5,054,428 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, 2021 and 2022 are as follows: Yen (millions) 12-month ECL Lifetime ECL Total As of March 31, 2021 Not credit-impaired Credit-impaired Dealer finance receivables: Group A ¥ 247,487 ¥ 6,345 ¥ 1,903 ¥ 255,735 Group B 225,651 4,562 190 230,403 Total ¥ 473,138 ¥ 10,907 ¥ 2,093 ¥ 486,138 Loan commitments: Group A ¥ 68,050 ¥ — ¥ — ¥ 68,050 Group B 24,701 — — 24,701 Total ¥ 92,751 ¥ — ¥ — ¥ 92,751 The undiscounted maximum amount of potential payment for guarantees of bank loans of employees for their housing costs as of March 31, 2021 is ¥8,343 million. Yen (millions) 12-month ECL Lifetime ECL Total As of March 31, 2022 Not credit-impaired Credit-impaired Dealer finance receivables: Group A ¥ 188,101 ¥ 88 ¥ 2,117 ¥ 190,306 Group B 91,995 2,133 72 94,200 Total ¥ 280,096 ¥ 2,221 ¥ 2,189 ¥ 284,506 Loan commitments: Group A ¥ 95,485 ¥ — ¥ — ¥ 95,485 Group B 23,683 — — 23,683 Total ¥ 119,168 ¥ — ¥ — ¥ 119,168 The undiscounted maximum amount of potential payment for guarantees of bank loans of employees for their housing costs as of March 31, 2022 is ¥7,098 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, 2021 and 2022 are approximately 70% and 90%, respectively, and those for dealer finance receivables are approximately 90% and 100% 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, 2021 and 2022 are as follows: Yen (millions) 2021 2022 Commercial paper ¥ 760,677 ¥ 1,190,631 Medium-term notes 1,976,173 1,291,612 Total ¥ 2,736,850 ¥ 2,482,243 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, 2021 and 2022 are as follows: Yen (millions) 2021 2022 Commercial paper programs ¥ 1,122,892 ¥ 1,226,138 Other 65,472 67,976 Total ¥ 1,188,364 ¥ 1,294,114 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, 2021 Carrying amount Within 1 year Between Later than Total contractual Trade payables ¥ 1,088,061 ¥ 1,088,061 ¥ — ¥ — ¥ 1,088,061 Financing liabilities 7,720,985 3,083,901 4,230,223 523,436 7,837,560 Accrued expenses 415,106 415,106 — — 415,106 Other financial liabilities 380,698 101,142 86,972 221,294 409,408 Total ¥ 9,604,850 ¥ 4,688,210 ¥ 4,317,195 ¥ 744,730 ¥ 9,750,135 Yen (millions) As of March 31, 2022 Carrying amount Within 1 year Between Later than Total contractual Trade payables ¥ 1,236,233 ¥ 1,236,233 ¥ — ¥ — ¥ 1,236,233 Financing liabilities 8,102,556 3,218,988 4,407,350 765,207 8,391,545 Accrued expenses 375,601 375,601 — — 375,601 Other financial liabilities 367,041 93,054 94,837 206,529 394,420 Total ¥ 10,081,431 ¥ 4,923,876 ¥ 4,502,187 ¥ 971,736 ¥ 10,397,799 Other financial liabilities include lease liabilities. Lease liabilities by maturity as of March 31, 2021 and 2022 are as follows: Yen (millions) As of March 31, 2021 Carrying amount Within 1 year Between Later than Total contractual Lease liabilities ¥ 317,429 ¥ 61,053 ¥ 79,836 ¥ 205,248 ¥ 346,137 Yen (millions) As of March 31, 2022 Carrying amount Within 1 year Between Later than Total contractual Lease liabilities ¥ 318,758 ¥ 71,510 ¥ 86,305 ¥ 188,321 ¥ 346,136 2) Derivative financial liabilities Derivative financial liabilities by maturity as of March 31, 2021 and 2022 are as follows: Yen (millions) As of March 31, 2021 Within 1 year Between 1 and 5 years Later than 5 years Total contractual Derivative financial liabilities ¥ 44,334 ¥ 30,218 ¥ 7,669 ¥ 82,221 Yen (millions) As of March 31, 2022 Within 1 year Between 1 and 5 years Later than 5 years Total contractual Derivative financial liabilities ¥ 53,895 ¥ 106,214 ¥ 25,140 ¥ 185,249

Fair Value

Fair Value	12 Months Ended
	Mar. 31, 2022
Text block [Abstract]
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 a discounted cash flow method, a 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. Cash flow forecasts and discount rate for the discounted cash flow model and price book-value ratio (PBR) of a comparable company for the comparable company valuation method are used as significant unobservable inputs in the fair value measurement of equity securities classified as Level 3. The fair value increases (decreases) as Cash flow forecasts increase (decrease), discount rate decline (rise) and 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 interest rate benchmarks like U.S. dollar LIBOR, 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, 2021 and 2022 consist of the following: Yen (millions) As of March 31, 2021 Level 1 Level 2 Level 3 Total Other financial assets: Financial assets measured at fair value through profit or loss: Derivatives Foreign exchange instruments ¥ — ¥ 43,782 ¥ — ¥ 43,782 Interest rate instruments — 60,367 — 60,367 Other — — 4,829 4,829 Total — 104,149 4,829 108,978 Debt securities 26,570 36,439 5,314 68,323 Financial assets measured at fair value through other comprehensive income: Debt securities — 10,134 — 10,134 Equity securities 234,155 — 110,050 344,205 Total ¥ 260,725 ¥ 150,722 ¥ 120,193 ¥ 531,640 Other financial liabilities: Financial liabilities measured at fair value through profit or loss: Derivatives Foreign exchange instruments ¥ — ¥ 17,343 ¥ — ¥ 17,343 Interest rate instruments — 64,913 — 64,913 Total — 82,256 — 82,256 Total ¥ — ¥ 82,256 ¥ — ¥ 82,256 There were no transfers between Level 1 and Level 2 for the year ended March 31, 2021. Yen (millions) As of March 31, 2022 Level 1 Level 2 Level 3 Total Other financial assets: Financial assets measured at fair value through profit or loss: Derivatives Foreign exchange instruments ¥ — ¥ 15,674 ¥ — ¥ 15,674 Interest rate instruments — 114,016 — 114,016 Other — — 4,648 4,648 Total — 129,690 4,648 134,338 Debt securities 42,837 54,641 4,773 102,251 Financial assets measured at fair value through other comprehensive income: Debt securities — 19,984 — 19,984 Equity securities 335,745 — 133,038 468,783 Total ¥ 378,582 ¥ 204,315 ¥ 142,459 ¥ 725,356 Other financial liabilities: Financial liabilities measured at fair value through profit or loss: Derivatives Foreign exchange instruments ¥ — ¥ 66,644 ¥ — ¥ 66,644 Interest rate instruments — 83,669 — 83,669 Othe r — 1,629 — 1,629 Total — 151,942 — 151,942 Total ¥ — ¥ 151,942 ¥ — ¥ 151,942 There were no transfers between Level 1 and Level 2 for the year ended March 31, 2022. The changes in Level 3 assets and liabilities measured at fair value on a recurring basis for the years ended March 31, 2021 and 2022 are as follows: Yen (millions) For the year ended March 31, 2021 Derivatives Debt securities Equity securities Balance as of April 1, 2020 ¥ — ¥ 5,224 ¥ 99,508 Total gains or losses: Profit or loss 4,665 (43 ) — Other comprehensive income — — 3,748 Purchases — — 7,701 Sales — — (1,243 ) Exchange differences on translating foreign operations 164 133 336 Balance as of March 31, 2021 ¥ 4,829 ¥ 5,314 ¥ 110,050 Unrealized gains or losses included in profit or loss on assets held at March 31, 2021 ¥ 4,665 ¥ (43 ) ¥ — Yen (millions) For the year ended March 31, 2022 Derivatives Debt securities Equity securities Balance as of April 1, 2021 ¥ 4,829 ¥ 5,314 ¥ 110,050 Total gains or losses: Profit or loss (674 ) 112 — Other comprehensive income — — 17,973 Purchases — — 7,075 Sales — (1,124 ) (1,487 ) Transfer to level 1 due to listing — — (1,158 ) Exchange differences on translating foreign operations 493 471 585 Balance as of March 31, 2022 ¥ 4,648 ¥ 4,773 ¥ 133,038 Unrealized gains or losses included in profit or loss on assets held at March 31, 2022 ¥ (674 ) ¥ 112 ¥ — Explanatory notes: 1. Gains or losses included in profit or loss for the years ended March 31, 2021 and 2022 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, 2021 and 2022 are included in net changes in revaluation of financial assets measured at fair value through other comprehensive income under items that (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, 2021 and 2022 are as follows: Yen (millions) 2021 2022 Carrying Fair value Carrying Fair value Receivables from financial services ¥ 5,414,550 ¥ 5,488,065 ¥ 5,434,496 ¥ 5,374,754 Debt securities 173,302 173,302 79,176 79,176 Financing liabilities 7,720,985 7,809,379 8,102,556 7,984,057 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, 2022
Text block [Abstract]
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, 2021 and 2022 is as follows: Yen (millions) As of March 31, 2021 Gross amounts of Amounts offset Net amounts presented Amounts not offset due to not Net Amounts Other financial assets Derivatives ¥ 108,978 ¥ — ¥ 108,978 ¥ (65,430 ) ¥ 43,548 Other financial liabilities Derivatives 82,256 — 82,256 (65,430 ) 16,826 Yen (millions) As of March 31, 2022 Gross amounts of Amounts offset Net amounts presented Amounts not offset due to not Net Amounts Other financial assets Derivatives ¥ 134,338 ¥ — ¥ 134,338 ¥ (98,419 ) ¥ 35,919 Other financial liabilities Derivatives 151,942 — 151,942 (98,419 ) 53,523 Generally, the set-off

Commitments and Contingent Liab

Commitments and Contingent Liabilities	12 Months Ended
	Mar. 31, 2022
Text block [Abstract]
Commitments and Contingent Liabilities	(28) Commitments and Contingent Liabilities (a) Commitments Purchase commitments Commitments for purchases of property, plant and equipment and other commitments as of March 31, 2021 and 2022 are as follows: Yen (millions) 2021 2022 Commitments for purchases of property, plant and equipment and other commitments ¥ 55,571 ¥ 60,527 (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 arises. 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.

Structured Entities

Structured Entities	12 Months Ended
	Mar. 31, 2022
Investments accounted for using the 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, 2021 and 2022.

Related Parties

Related Parties	12 Months Ended
	Mar. 31, 2022
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, 2021 and 2022 are as follows: Yen (millions) 2021 2022 Receivables: Affiliates ¥ 29,067 ¥ 34,317 Joint ventures 293,132 346,370 Total ¥ 322,199 ¥ 380,687 Payables: Affiliates ¥ 127,793 ¥ 147,705 Joint ventures 30,412 36,380 Total ¥ 158,205 ¥ 184,085 The amount of the transactions with affiliates and joint ventures for the years ended March 31, 2020, 2021 and 2022 are as follows: Yen (millions) 2020 2021 2022 Sales revenue: Affiliates ¥ 109,615 ¥ 87,742 ¥ 93,187 Joint ventures 722,896 985,920 1,053,370 Total ¥ 832,511 ¥ 1,073,662 ¥ 1,146,557 Purchase: Affiliates ¥ 1,241,314 ¥ 1,015,921 ¥ 1,176,066 Joint ventures 166,885 150,123 194,321 Total ¥ 1,408,199 ¥ 1,166,044 ¥ 1,370,387 (b) Compensation to Key Management Compensation paid to the directors and executive officers of the Company for the years ended March 31, 2020, 2021 and 2022 are as follows: Yen (millions) 2020 2021 2022 Remuneration ¥ 691 ¥ 683 ¥ 696 STI (Short Term Incentive) 101 95 188 LTI (Long Term Incentive) 140 129 159 Total ¥ 932 ¥ 907 ¥ 1,043 (c) Major Consolidated Subsidiaries Major consolidated subsidiaries as of March 31, 2022 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. Coordination of Subsidiaries Operation, Research & Development, Manufacturing and Sales 100.0 Honda Aero., Inc. U.S.A. Research & Development and Manufacturing 100.0 American Honda Finance Corporation U.S.A. Finance 100.0 Honda Development and Manufacturing of America, LLC U.S.A. Research & Development and Manufacturing 100.0 Honda Aircraft Company, LLC U.S.A. Research & Development, Manufacturing and Sales 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 Operation and Sales 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 Operation and Sales 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 Philippines Inc. Philippines Manufacturing and Sales 99.6 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 and Sales 72.5 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, 2022
Text block [Abstract]
Approval of Release of Consolidated Financial Statements	(31) Approval of Release of Consolidated Financial Statement s The release of the consolidated financial statements was approved by Toshihiro Mibe, Director, President and Representative Executive Officer and Kohei Takeuchi, Director, Executive Vice President and Representative Executive Officer and Chief Financial Officer on June 22, 2022.

Significant Accounting Polici_2

Significant Accounting Policies (Policies)	12 Months Ended
	Mar. 31, 2022
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. 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, 2020, 2021 and 2022. 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
Equipment on Operating Leases	(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 economic conditions, external market information on new and used vehicles, historical trends, and recent auction values.
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
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 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 constant periodic rate of interest on the remaining balance of the lease liability and reducing the carrying amount to reflect the lease payments. The lease liability is remeasured if Honda changes its assessment of whether it will exercise an extension or termination option. 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 asset. However, if the carrying amount of the right-of-use asset is reduced to zero and there is a further reduction in the measurement of the lease liability, any remaining amount of the remeasurement is recognized in profit or loss. 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 the lease other than finance lease is classified as an operating lease. 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
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 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 ECL is the portion of lifetime ECL that results from default events that are possible within 12 months after the reporting date. ECL is a probability-weighted estimate of the difference between the contractual cash flows and the cash flows that the entity expects to receive, discounted at the original effective interest rates. Receivables from financial services – Allowance for credit losses The allowance for credit losses is management’s estimate of expected credit loss on receivables from 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 from 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. 2) Non-financial At the end of the reporting period, the carrying amount of non-financial assets other than inventories and deferred tax assets (which are comprised mainly of equipment on operating leases, property, plant and equipment, and intangible assets) is assessed to determine whether or not there is any indication of impairment. If there is such an indication, the recoverable amount of such asset is estimated and compared with the carrying amount of the asset, as test of impairment. 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 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 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 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. 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. Sales 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. 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 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.

Segment Information (Tables)

Segment Information (Tables)	12 Months Ended
	Mar. 31, 2022
Text block [Abstract]
Summary of Segment Information	Segment information as of and for the years ended March 31, 2020, 2021 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 (reversal) for credit and lease residual losses on receivables from financial services — — 56,894 — 56,894 — 56,894 As of and for the year ended March 31, 2021 Yen (millions) Motorcycle Automobile Financial Life Segment Reconciling Consolidated Sales revenue: External customers ¥ 1,787,283 ¥ 8,567,205 ¥ 2,494,294 ¥ 321,737 ¥ 13,170,519 ¥ — ¥ 13,170,519 Intersegment — 212,144 12,494 20,107 244,745 (244,745 ) — Total 1,787,283 8,779,349 2,506,788 341,844 13,415,264 (244,745 ) 13,170,519 Segment profit (loss) ¥ 224,608 ¥ 90,255 ¥ 356,980 ¥ (11,635 ) ¥ 660,208 ¥ — ¥ 660,208 Share of profit of investments accounted for using the equity method ¥ 18,164 ¥ 254,079 ¥ — ¥ 491 ¥ 272,734 ¥ — ¥ 272,734 Segment assets 1,555,057 8,643,109 10,832,645 374,169 21,404,980 516,050 21,921,030 Investments accounted for using the equity method 88,476 796,036 — 6,490 891,002 — 891,002 Depreciation and amortization 68,258 515,241 825,975 15,644 1,425,118 — 1,425,118 Capital expenditures 48,800 500,431 2,006,264 11,609 2,567,104 — 2,567,104 Impairment losses on non-financial 726 19,999 (16,319 ) 357 4,763 — 4,763 Provision (reversal) for credit and lease residual losses on receivables from financial services — — (5,038 ) — (5,038 ) — (5,038 ) As of and for the year ended March 31, 2022 Yen (millions) Motorcycle Automobile Financial Life Segment Reconciling Consolidated Sales revenue: External customers ¥ 2,185,253 ¥ 9,147,498 ¥ 2,820,667 ¥ 399,278 ¥ 14,552,696 ¥ — ¥ 14,552,696 Intersegment — 213,095 2,656 22,480 238,231 (238,231 ) — Total 2,185,253 9,360,593 2,823,323 421,758 14,790,927 (238,231 ) 14,552,696 Segment profit (loss) ¥ 311,492 ¥ 236,207 ¥ 333,032 ¥ (9,499 ) ¥ 871,232 ¥ — ¥ 871,232 Share of profit of investments accounted for using the equity method ¥ 33,510 ¥ 168,415 ¥ — ¥ 587 ¥ 202,512 ¥ — ¥ 202,512 Segment assets 1,448,926 9,563,553 11,318,756 475,124 22,806,359 1,166,794 23,973,153 Investments accounted for using the equity method 104,535 855,309 — 7,560 967,404 — 967,404 Depreciation and amortization 65,423 510,755 883,712 17,018 1,476,908 — 1,476,908 Capital expenditures 49,203 410,169 2,028,700 15,748 2,503,820 — 2,503,820 Impairment losses on non-financial (23 ) 13,097 1,874 276 15,224 — 15,224 Provision (reversal) for credit and lease residual losses on receivables from financial — — 9,282 — 9,282 — 9,282 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, 2020, 2021 and 2022 amounted to ¥787,022 million, ¥696,327 million and ¥1,319,995 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, 2020, 2021 and 2022 are ¥212,275 million, ¥272,076 million and ¥118,378 million, respectively. These are mainly included in Automobile business. 6. The amounts of write-down of inventories recognized as an expense for the years ended March 31, 2020, 2021 and 2022 are ¥37,752 million, ¥28,420 million and ¥11,295 million respectively. These are related to Automobile business and aircraft and aircraft engines, which are included in Life creation and other businesses. 7 . Right-of-use
Sales Revenue by Product or Service Groups	Sales revenue by product or service groups of Honda for the years ended March 31, 2020, 2021 and 2022 is as follows: Yen (millions) 2020 2021 2022 Motorcycles and relevant parts ¥ 1,921,065 ¥ 1,658,871 ¥ 2,066,557 All-terrain side-by-sides 138,270 128,412 118,696 Automobiles and relevant parts 11,199,477 9,746,374 10,582,764 Financial services 1,346,568 1,315,125 1,385,401 Power products and relevant parts 243,251 257,237 294,577 Others 82,378 64,500 104,701 Total ¥ 14,931,009 ¥ 13,170,519 ¥ 14,552,696
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, 2020 Yen (millions) Japan United Other 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 As of and for the year ended March 31, 2021 Yen (millions) Japan United Other Total Sales revenue ¥ 2,190,797 ¥ 6,291,857 ¥ 4,687,865 ¥ 13,170,519 Non-current ¥ 3,050,270 ¥ 4,242,405 ¥ 1,641,793 ¥ 8,934,468 As of and for the year ended March 31, 2022 Yen (millions) Japan United Other Total Sales revenue ¥ 2,354,532 ¥ 6,728,800 ¥ 5,469,364 ¥ 14,552,696 Non-current ¥ 3,036,832 ¥ 4,490,562 ¥ 1,768,697 ¥ 9,296,091
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, 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 As of and for the year ended March 31, 2021 Yen (millions) Japan North Europe Asia Other Total Reconciling Consolidated Sales revenue: External customers ¥ 2,190,797 ¥ 7,081,264 ¥ 503,549 ¥ 2,966,814 ¥ 428,095 ¥ 13,170,519 ¥ — ¥ 13,170,519 Inter-geographic areas 1,677,038 399,573 178,300 491,965 6,400 2,753,276 (2,753,276 ) — Total 3,867,835 7,480,837 681,849 3,458,779 434,495 15,923,795 (2,753,276 ) 13,170,519 Operating profit (loss) ¥ (75,935 ) ¥ 455,888 ¥ 27,460 ¥ 251,886 ¥ (5,034 ) ¥ 654,265 ¥ 5,943 ¥ 660,208 Assets ¥ 5,295,475 ¥ 12,209,455 ¥ 677,066 ¥ 3,267,417 ¥ 482,918 ¥ 21,932,331 ¥ (11,301 ) ¥ 21,921,030 Non-current ¥ 3,050,270 ¥ 5,039,085 ¥ 60,790 ¥ 666,795 ¥ 117,528 ¥ 8,934,468 ¥ — ¥ 8,934,468 As of and for the year ended March 31, 2022 Yen (millions) Japan North Europe Asia Other Total Reconciling Consolidated Sales revenue: External customers ¥ 2,354,532 ¥ 7,618,932 ¥ 602,695 ¥ 3,393,323 ¥ 583,214 ¥ 14,552,696 ¥ — ¥ 14,552,696 Inter-geographic areas 2,004,754 471,255 98,516 662,124 9,925 3,246,574 (3,246,574 ) — Total 4,359,286 8,090,187 701,211 4,055,447 593,139 17,799,270 (3,246,574 ) 14,552,696 Operating profit (loss) ¥ 6,411 ¥ 501,073 ¥ 26,681 ¥ 339,129 ¥ 22,899 ¥ 896,193 ¥ (24,961 ) ¥ 871,232 Assets ¥ 5,318,033 ¥ 12,983,779 ¥ 597,473 ¥ 3,803,877 ¥ 619,998 ¥ 23,323,160 ¥ 649,993 ¥ 23,973,153 Non-current ¥ 3,036,832 ¥ 5,334,121 ¥ 49,129 ¥ 706,562 ¥ 169,447 ¥ 9,296,091 ¥ — ¥ 9,296,091 Explanatory notes: 1. Major countries in each geographic area: North America United States, Canada, Mexico Europe United Kingdom, Germany, Belgium, Italy, France Asia Thailand, China, India, Vietnam , Malaysia 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, 2020, 2021 and 2022 amounted to ¥787,022 million, ¥696,327 million and ¥1,319,995 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, 2022
Text block [Abstract]
Summary of Cash and Cash Equivalents	Cash and cash equivalents as of March 31, 2021 and 2022 consist of the following: Yen (millions) 2021 2022 Cash and deposits ¥ 2,037,392 ¥ 2,654,447 Cash equivalents 720,628 1,020,484 Total ¥ 2,758,020 ¥ 3,674,931

Trade Receivables (Tables)

Trade Receivables (Tables) - Trade receivables [member]	12 Months Ended
	Mar. 31, 2022
Statement [LineItems]
Summary of Financial Assets	Trade receivables as of March 31, 2021 and 2022 consist of the following: Yen (millions) 2021 2022 Trade accounts and notes receivable ¥ 689,347 ¥ 793,022 Other 122,988 112,591 Allowance for impairment losses (10,521 ) (8,845 ) Total ¥ 801,814 ¥ 896,768
Changes in Allowance for Doubtful Accounts	The changes in the allowance for impairment losses on trade receivables for the years ended March 31, 2020, 2021 and 2022 are as follows: Yen (millions) 2020 2021 2022 Balance at beginning of year ¥ 12,555 ¥ 11,302 ¥ 10,521 Remeasurement ¥ 589 ¥ 516 ¥ 260 Write-offs (971 ) (1,312 ) (2,648 ) Exchange differences on translating foreign operations (871 ) 15 712 Balance at end of year ¥ 11,302 ¥ 10,521 ¥ 8,845

Receivables from Financial Se_2

Receivables from Financial Services (Tables)	12 Months Ended
	Mar. 31, 2022
Statement [LineItems]
Summary of Receivables from Financial Services	Receivables from Yen (millions) 2021 2022 Consumer finance receivables: Retail ¥ 4,847,906 ¥ 5,054,428 Finance lease 126,766 145,932 Dealer finance receivables: Wholesale 486,138 284,506 Subtotal ¥ 5,460,810 ¥ 5,484,866 Allowance for credit losses ¥ (37,366 ) ¥ (39,063 ) Unearned interest income and fees (8,894 ) (11,307 ) Total ¥ 5,414,550 ¥ 5,434,496 Current assets ¥ 1,794,654 ¥ 1,694,113 Non-current 3,619,896 3,740,383 Total ¥ 5,414,550 ¥ 5,434,496 Finance lease receivables The lease payments receivable under the finance leases by maturity as of March 31, 2021 and 2022 are as follows: Yen (millions) 2021 2022 Within 1 year ¥ 22,339 ¥ 25,066 Between 1 and 2 years 22,566 25,569 Between 2 and 3 years 10,861 13,192 Between 3 and 4 years 5,297 9,335 Between 4 and 5 years 1,289 2,153 Later than 5 years 94 1,827 Undiscounted lease payments receivable ¥ 62,446 ¥ 77,142 Unearned finance income ¥ (3,829 ) ¥ (4,603 ) Unguaranteed residual value ¥ 59,255 ¥ 62,086 Net investment in the lease ¥ 117,872 ¥ 134,625
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, 2020, 2021 and 2022 are as follows: For the years ended March 31, 2020, 2021 and 2022 Yen (millions) 12-month ECL Lifetime ECL Total Not credit-impaired Credit-impaired Retail: Balance as of April 1, 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 Remeasurement ¥ (3,286 ) ¥ (20,319 ) ¥ 18,827 ¥ (4,778 ) Write-offs — — (20,733 ) (20,733 ) Exchange differences on translating foreign operations 111 (390 ) (165 ) (444 ) Balance as of March 31, 2021 ¥ 23,480 ¥ 5,923 ¥ 4,883 ¥ 34,286 Remeasurement ¥ (2,513 ) ¥ (925 ) ¥ 13,701 ¥ 10,263 Write-offs — — (12,256 ) (12,256 ) Exchange differences on translating foreign operations 2,822 516 1,136 4,474 Balance as of March 31, 2022 ¥ 23,789 ¥ 5,514 ¥ 7,464 ¥ 36,767 Finance lease: Balance as of April 1, 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 Remeasurement ¥ (65 ) ¥ 71 ¥ 136 ¥ 142 Write-offs — — (107 ) (107 ) Exchange differences on translating foreign operations 54 17 17 88 Balance as of March 31, 2021 ¥ 470 ¥ 184 ¥ 159 ¥ 813 Remeasurement ¥ (339 ) ¥ (98 ) ¥ 182 ¥ (255 ) Write-offs — — (97 ) (97 ) Exchange differences on translating foreign operations 8 6 12 26 Balance as of March 31, 2022 ¥ 139 ¥ 92 ¥ 256 ¥ 487 Yen (millions) 12-month ECL Lifetime ECL Total Not credit-impaired Credit-impaired Wholesale: Balance as of April 1, 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 Remeasurement ¥ 160 ¥ (270 ) ¥ (292 ) ¥ (402 ) Write-offs — — 18 18 Exchange differences on translating foreign operations 144 14 (44 ) 114 Balance as of March 31, 2021 ¥ 1,741 ¥ 62 ¥ 464 ¥ 2,267 Remeasurement ¥ (649 ) ¥ (46 ) ¥ (31 ) ¥ (726 ) Write-offs — — 30 30 Exchange differences on translating foreign operations 84 1 153 238 Balance as of March 31, 2022 ¥ 1,176 ¥ 17 ¥ 616 ¥ 1,809 Total: Balance as of April 1, 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 Remeasurement ¥ (3,191 ) ¥ (20,518 ) ¥ 18,671 ¥ (5,038 ) Write-offs — — (20,822 ) (20,822 ) Exchange differences on translating foreign operations 309 (359 ) (192 ) (242 ) Balance as of March 31, 2021 ¥ 25,691 ¥ 6,169 ¥ 5,506 ¥ 37,366 Remeasurement ¥ (3,501 ) ¥ (1,069 ) ¥ 13,852 ¥ 9,282 Write-offs — — (12,323 ) (12,323 ) Exchange differences on translating foreign operations 2,914 523 1,301 4,738 Balance as of March 31, 2022 ¥ 25,104 ¥ 5,623 ¥ 8,336 ¥ 39,063

Other Financial Assets (Tables)

Other Financial Assets (Tables)	12 Months Ended
	Mar. 31, 2022
Statement [LineItems]
Summary of Other Financial Assets	Other financial assets as of March 31, 2021 and 2022 consist of the following: Yen (millions) 2021 2022 Financial assets measured at amortized cost: Receivables other than trade receivables and receivables from financial services ¥ 147,472 ¥ 166,936 Debt securities 173,302 79,176 Guaranty deposits 12,006 11,499 Restricted cash 49,166 53,290 Other 13,612 4,352 Allowance for impairment losses (3,358 ) (3,212 ) Financial assets measured at fair value through other comprehensive income: Debt securities 10,134 19,984 Equity securities 344,205 468,783 Financial assets measured at fair value through profit or loss: Derivatives 108,978 134,338 Debt securities 68,323 102,251 Total ¥ 923,840 ¥ 1,037,397 Current assets ¥ 295,307 ¥ 217,743 Non-current 628,533 819,654 Total ¥ 923,840 ¥ 1,037,397
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, 2021 and 2022 are as follows: As of March 31, 2021 Yen (millions) Fair value Contemporary Amperex Technology Co., Ltd. ¥ 124,782 GM Cruise Holdings LLC 94,324 Stanley Electric Co., Ltd. 30,431 Mitsubishi UFJ Financial Group, Inc. 8,581 Daido Steel Co., Ltd. 6,670 Tokio Marine Holdings, Inc. 5,753 As of March 31, 2022 Yen (millions) Fair value Contemporary Amperex Technology Co., Ltd. ¥ 226,938 GM Cruise Holdings LLC 105,916 Stanley Electric Co., Ltd. 21,463 Mitsubishi UFJ Financial Group, Inc. 11,026 SES AI Corporation 8,307 Tokio Marine Holdings, Inc. 7,789
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, 2020, 2021 and 2022 are as follows: Yen (millions) 2020 2021 2022 Balance at beginning of year ¥ 4,233 ¥ 3,364 ¥ 3,358 Remeasurement ¥ 600 ¥ 792 ¥ 42 Write-offs (1,463 ) (805 ) (191 ) Exchange differences on translating foreign operations (6 ) 7 3 Balance at end of year ¥ 3,364 ¥ 3,358 ¥ 3,212

Inventories (Tables)

Inventories (Tables)	12 Months Ended
	Mar. 31, 2022
Text block [Abstract]
Summary of Inventories	Inventories as of March 31, 2021 and 2022 consist of the following: Yen (millions) 2021 2022 Finished goods ¥ 784,544 ¥ 907,872 Work in process 71,853 90,871 Raw materials 689,203 919,805 Total ¥ 1,545,600 ¥ 1,918,548

Investments Accounted for Usi_2

Investments Accounted for Using the Equity Method (Tables)	12 Months Ended
	Mar. 31, 2022
Text block [Abstract]
Equity in Affiliates and Joint Ventures	Honda’s equity in affiliates and joint ventures as of March 31, 2021 Yen (millions) 2021 2022 Investments accounted for using the equity method: Affiliates ¥ 537,702 ¥ 544,563 Joint ventures 353,300 422,841 Total ¥ 891,002 ¥ 967,404 Honda’s equity of undistributed earnings: Affiliates ¥ 198,432 ¥ 177,231 Joint ventures 262,599 279,288 Total ¥ 461,031 ¥ 456,519
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, 2020, 2021 and 2022 is as follows: Yen (millions) 2020 2021 2022 Profit for the year: Affiliates ¥ (434 ) ¥ 53,511 ¥ (17,844 ) Joint ventures 164,637 219,223 220,356 Total ¥ 164,203 ¥ 272,734 ¥ 202,512 Other comprehensive income: Affiliates ¥ (5,758 ) ¥ (1,197 ) ¥ 26,673 Joint ventures (26,185 ) 33,457 52,560 Total ¥ (31,943 ) ¥ 32,260 ¥ 79,233 Comprehensive income for the year: Affiliates ¥ (6,192 ) ¥ 52,314 ¥ 8,829 Joint ventures 138,452 252,680 272,916 Total ¥ 132,260 ¥ 304,994 ¥ 281,745
Summarized Consolidated Financial Information	Summarized consolidated financial information of Dongfeng Honda Automobile Co., Ltd. as of March , and is as follows: Yen (millions) 2021 2022 Current assets ¥ 687,417 ¥ 747,397 Non-current 238,507 252,219 Total assets 925,924 999,616 Current liabilities 608,408 610,379 Non-current 32,860 34,182 Total liabilities 641,268 644,561 Total equity ¥ 284,657 ¥ 355,055 Honda’s share of total equity (50%) 142,328 177,527 Equity method adjustments (1,212 ) (697 ) Carrying amount of its interest in the joint venture ¥ 141,116 ¥ 176,830 Cash and cash equivalents included in current assets ¥ 332,031 ¥ 301,839 Financial liabilities (excluding trade payables and provisions) included in current liabilities 5,363 6,168 Summarized consolidated financial information of Dongfeng Honda Automobile Co., Ltd. for the years ended March 31, 2020, 2021 and 2022 is as follows: Yen (millions) 2020 2021 2022 Sales revenue ¥ 1,516,160 ¥ 2,201,051 ¥ 1,994,534 Interest income 8,019 9,412 10,653 Depreciation and amortization 18,870 23,055 25,996 Income tax expense 48,622 65,102 60,868 Profit for the year 130,327 197,217 182,989 Other comprehensive income (21,100 ) 25,462 44,812 Comprehensive income for the year ¥ 109,227 ¥ 222,679 ¥ 227,801 Comprehensive income for the year (50%) 54,614 111,340 113,901 Equity method adjustments 53 53 607 Honda’s share of comprehensive income for the year ¥ 54,667 ¥ 111,393 ¥ 114,508 Dividend from the joint venture to Honda ¥ 72,760 ¥ 102,767 ¥ 79,191
Combined Financial Information of Affiliates and Joint Ventures	Combined financial information in respect of affiliates as of March 31, 2021 and 2022, and for the years ended March 31, 2020, 2021 and 2022 is as follows: Yen (millions) For the year ended March 31, 2020 Motorcycle Automobile Life Creation Total Sales revenue ¥ 160,557 ¥ 2,505,819 ¥ 7,342 ¥ 2,673,718 Profit for the year 8,094 69,339 914 78,347 Yen (millions) As of and for the year ended March 31, 2021 Motorcycle Automobile Life Creation Total Current assets ¥ 54,369 ¥ 1,458,252 ¥ 11,813 ¥ 1,524,434 Non-current 27,677 1,952,423 21,709 2,001,809 Total assets 82,046 3,410,675 33,522 3,526,243 Current liabilities 25,399 1,015,374 3,140 1,043,913 Non-current 3,167 616,924 1,180 621,271 Total liabilities 28,566 1,632,298 4,320 1,665,184 Total equity ¥ 53,480 ¥ 1,778,377 ¥ 29,202 ¥ 1,861,059 Sales revenue ¥ 122,605 ¥ 1,933,675 ¥ 6,331 ¥ 2,062,611 Profit for the year 2,552 2,593 843 5,988 Yen (millions) As of and for the year ended March 31, 2022 Motorcycle Automobile Life Creation Total Current assets ¥ 64,324 ¥ 1,542,414 ¥ 14,313 ¥ 1,621,051 Non-current 28,330 2,030,822 22,928 2,082,080 Total assets 92,654 3,573,236 37,241 3,703,131 Current liabilities 25,819 1,013,738 3,768 1,043,325 Non-current 5,003 583,308 1,065 589,376 Total liabilities 30,822 1,597,046 4,833 1,632,701 Total equity ¥ 61,832 ¥ 1,976,190 ¥ 32,408 ¥ 2,070,430 Sales revenue ¥ 173,696 ¥ 3,120,190 ¥ 7,146 ¥ 3,301,032 Profit for the year 7,233 73,169 996 81,398 Combined financial information in respect of joint ventures as of March 31, 2021 and 2022, and for the years ended March 31, 2020, 2021 and 2022 is as follows: Yen (millions) For the year ended March 31, 2020 Motorcycle Automobile Life Creation Total Sales revenue ¥ 791,250 ¥ 3,483,024 ¥ 6,413 ¥ 4,280,687 Profit for the year 63,819 264,216 568 328,603 Yen (millions) As of and for the year ended March 31, 2021 Motorcycle Automobile Life Creation Total Current assets ¥ 221,524 ¥ 1,548,875 ¥ 4,120 ¥ 1,774,519 Non-current 120,238 423,270 704 544,212 Total assets 341,762 1,972,145 4,824 2,318,731 Current liabilities 191,565 1,334,240 1,305 1,527,110 Non-current 17,035 61,312 879 79,226 Total liabilities 208,600 1,395,552 2,184 1,606,336 Total equity ¥ 133,162 ¥ 576,593 ¥ 2,640 ¥ 712,395 Sales revenue ¥ 543,504 ¥ 4,839,927 ¥ 3,443 ¥ 5,386,874 Profit for the year 33,115 403,088 174 436,377 Yen (millions) As of and for the year ended March 31, 2022 Motorcycle Automobile Life Creation Total Current assets ¥ 272,962 ¥ 1,810,581 ¥ 4,771 ¥ 2,088,314 Non-current 130,271 479,707 909 610,887 Total assets 403,233 2,290,288 5,680 2,699,201 Current liabilities 227,215 1,513,623 1,704 1,742,542 Non-current 17,769 70,675 665 89,109 Total liabilities 244,984 1,584,298 2,369 1,831,651 Total equity ¥ 158,249 ¥ 705,990 ¥ 3,311 ¥ 867,550 Sales revenue ¥ 811,764 ¥ 4,612,394 ¥ 3,940 ¥ 5,428,098 Profit for the year 62,907 375,642 363 438,912 The amounts of a joint venture that is material to the Company are included in above.

Property, Plant and Equipment (

Property, Plant and Equipment (Tables)	12 Months Ended
	Mar. 31, 2022
Statement [LineItems]
Future Minimum Lease Payments Expected to be Received under Non-cancellable Operating Leases to be Received	Future lease payments expected to be received under the operating leases by maturity as of March 31, 2021 and 2022 consist of the following: Yen (millions) 2021 2022 Within 1 year ¥ 818,025 ¥ 824,769 Between 1 and 2 years 571,632 574,536 Between 2 and 3 years 271,863 240,437 Between 3 and 4 years 86,070 84,911 Between 4 and 5 years 25,488 27,796 Later than 5 years 554 — Total ¥ 1,773,632 ¥ 1,752,449
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, 2020 ¥ 77,916 ¥ 142,521 ¥ 85,605 ¥ 306,042 Additions 8,488 24,270 36,029 68,787 Depreciation (6,118 ) (12,997 ) (43,088 ) (62,203 ) Other 257 (18,491 ) 938 (17,296 ) Balance as of March 31, 2021 ¥ 80,543 ¥ 135,303 ¥ 79,484 ¥ 295,330 Additions 8,283 18,952 61,189 88,424 Depreciation (7,087 ) (15,882 ) (45,326 ) (68,295 ) Other (102 ) (8,192 ) 535 (7,759 ) Balance as of March 31, 2022 ¥ 81,637 ¥ 130,181 ¥ 95,882 ¥ 307,700
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, 2021 and 2022 are as follows: (Cost) Yen (millions) Balance as of April 1, 2020 ¥ 5,903,574 Additions ¥ 2,001,898 Sales or disposal (1,777,101 ) Exchange differences on translating foreign operations 174,338 Other — Balance as of March 31, 2021 ¥ 6,302,709 Additions ¥ 2,026,098 Sales or disposal (2,171,117 ) Exchange differences on translating foreign operations 509,447 Other — Balance as of March 31, 2022 ¥ 6,667,137 (Accumulated depreciation and impairment losses) Yen (millions) Balance as of April 1, 2020 ¥ (1,277,511 ) Depreciation ¥ (821,963 ) Sales or disposal 740,627 Exchange differences on translating foreign operations (40,267 ) Other 16,321 Balance as of March 31, 2021 ¥ (1,382,793 ) Depreciation ¥ (879,196 ) Sales or disposal 856,835 Exchange differences on translating foreign operations (100,982 ) Other (1,872 ) Balance as of March 31, 2022 ¥ (1,508,008 ) (Carrying amount) Yen (millions) Balance as of March 31, 2021 ¥ 4,919,916 Balance as of March 31, 2022 5,159,129
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, 2021 and 2022 are as follows: (Cost) Yen (millions) Land Buildings and Machinery and Construction in Total Balance as of April 1, 2020 ¥ 615,687 ¥ 2,468,194 ¥ 5,441,813 ¥ 222,273 ¥ 8,747,967 Additions 8,534 28,538 79,952 273,057 390,081 Reclassification 1,305 50,529 233,463 (285,297 ) — Sales or disposal (3,469 ) (30,366 ) (208,700 ) — (242,535 ) Exchange differences on translating foreign operations 6,735 47,479 143,683 7,287 205,184 Other (68 ) (5,469 ) (3,094 ) (122 ) (8,753 ) Balance as of March 31, 2021 ¥ 628,724 ¥ 2,558,905 ¥ 5,687,117 ¥ 217,198 ¥ 9,091,944 Additions 8,473 26,268 102,835 229,253 366,829 Reclassification 387 28,766 199,242 (228,395 ) — Sales or disposal (4,151 ) (33,722 ) (275,348 ) — (313,221 ) Exchange differences on translating foreign operations 11,585 123,536 429,662 21,124 585,907 Other 454 (5,487 ) 4,421 (1,606 ) (2,218 ) Balance as of March 31, 2022 ¥ 645,472 ¥ 2,698,266 ¥ 6,147,929 ¥ 237,574 ¥ 9,729,241 (Accumulated depreciation and impairment losses) Yen (millions) Land Buildings and Machinery and Construction in Total Balance as of April 1, 2020 ¥ (10,517 ) ¥ (1,394,982 ) ¥ (4,288,929 ) ¥ (1,835 ) ¥ (5,696,263 ) Depreciation (6,118 ) (89,997 ) (331,948 ) — (428,063 ) Sales or disposal 2,031 16,569 181,325 — 199,925 Exchange differences on translating foreign operations (263 ) (27,643 ) (113,736 ) (154 ) (141,796 ) Other (1,742 ) (260 ) (2,132 ) (99 ) (4,233 ) Balance as of March 31, 2021 ¥ (16,609 ) ¥ (1,496,313 ) ¥ (4,555,420 ) ¥ (2,088 ) ¥ (6,070,430 ) Depreciation (7,087 ) (88,928 ) (342,254 ) — (438,269 ) Sales or disposal 1,403 22,920 251,628 — 275,951 Exchange differences on translating foreign operations (235 ) (68,557 ) (344,775 ) (19 ) (413,586 ) Other (391 ) (2,324 ) (1,889 ) 1,104 (3,500 ) Balance as of March 31, 2022 ¥ (22,919 ) ¥ (1,633,202 ) ¥ (4,992,710 ) ¥ (1,003 ) ¥ (6,649,834 ) (Carrying amount) Yen (millions) Land Buildings and Machinery and Construction in Total Balance as of March 31, 2021 ¥ 612,115 ¥ 1,062,592 ¥ 1,131,697 ¥ 215,110 ¥ 3,021,514 Balance as of March 31, 2022 622,553 1,065,064 1,155,219 236,571 3,079,407

Intangible Assets (Tables)

Intangible Assets (Tables)	12 Months Ended
	Mar. 31, 2022
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, 2021 and 2022 are as follows: (Cost) Yen (millions) Capitalized Software Other Total Balance as of April 1, 2020 ¥ 1,083,525 ¥ 392,732 ¥ 46,190 ¥ 1,522,447 Additions ¥ — ¥ 19,233 ¥ 11,236 ¥ 30,469 Internally developed 201,889 11,554 — 213,443 Sales or disposal (180,744 ) (6,028 ) (1,429 ) (188,201 ) Exchange differences on translating foreign operations 3,946 10,655 3,491 18,092 Other — 1,076 1,417 2,493 Balance as of March 31, 2021 ¥ 1,108,616 ¥ 429,222 ¥ 60,905 ¥ 1,598,743 Additions ¥ — ¥ 8,597 ¥ 11,235 ¥ 19,832 Internally developed 159,174 20,311 — 179,485 Sales or disposal (118,065 ) (15,760 ) (12,966 ) (146,791 ) Exchange differences on translating foreign operations 6,565 22,365 6,057 34,987 Other — (2,484 ) (339 ) (2,823 ) Balance as of March 31, 2022 ¥ 1,156,290 ¥ 462,251 ¥ 64,892 ¥ 1,683,433 (Accumulated amortization and impairment losses) Yen (millions) Capitalized Software Other Total Balance as of April 1, 2020 ¥ (456,333 ) ¥ (293,356 ) ¥ (12,324 ) ¥ (762,013 ) Amortization ¥ (144,795 ) ¥ (29,646 ) ¥ (651 ) ¥ (175,092 ) Sales or disposal 180,744 3,504 832 185,080 Exchange differences on translating foreign operations (906 ) (8,010 ) (873 ) (9,789 ) Other (15,923 ) (1,596 ) (647 ) (18,166 ) Balance as of March 31, 2021 ¥ (437,213 ) ¥ (329,104 ) ¥ (13,663 ) ¥ (779,980 ) Amortization ¥ (129,384 ) ¥ (29,290 ) ¥ (769 ) ¥ (159,443 ) Sales or disposal 118,065 15,003 3,447 136,515 Exchange differences on translating foreign operations (1,288 ) (17,442 ) (906 ) (19,636 ) Other (12,821 ) 1,364 75 (11,382 ) Balance as of March 31, 2022 ¥ (462,641 ) ¥ (359,469 ) ¥ (11,816 ) ¥ (833,926 ) (Carrying amount) Yen (millions) Capitalized Software Other Total Balance as of March 31, 2021 ¥ 671,403 ¥ 100,118 ¥ 47,242 ¥ 818,763 Balance as of March 31, 2022 693,649 102,782 53,076 849,507

Trade Payables (Tables)

Trade Payables (Tables)	12 Months Ended
	Mar. 31, 2022
Text block [Abstract]
Summary of Trade Payables	Trade payables as of March 31, 2021 and 2022 consist of the following: Yen (millions) 2021 2022 Trade accounts and notes payable ¥ 943,833 ¥ 1,047,623 Other 144,228 188,610 Total ¥ 1,088,061 ¥ 1,236,233

Financing Liabilities (Tables)

Financing Liabilities (Tables)	12 Months Ended
	Mar. 31, 2022
Statement [LineItems]
Pledged Assets for Financing Liabilities	Pledged assets for financing liabilities as of March 31, 2021 and 2022 Yen (millions) 2021 2022 Trade receivables ¥ 19,789 ¥ 15,298 Receivables from financial services 1,086,786 1,101,778 Equipment on operating leases 122,320 142,097 Property, plant and equipment 2,138 2,548 Total ¥ 1,231,033 ¥ 1,261,721
The Changes in Liabilities Arising from Financing Activities	The changes in liabilities arising from financing activities for the years ended March 31, 2020, 2021 and 2022 are as follows: For the year ended March 31, 2020 Yen (millions) Balance 2019 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 For the year ended March 31, 2021 Yen (millions) Balance Cash flows Cash flows Non-cash Balance Acquisitions Changes Changes Other Short-term financing liabilities ¥ 1,424,667 ¥ (179,512 ) ¥ — ¥ — ¥ 55,337 ¥ — ¥ (1,145 ) ¥ 1,299,347 Long-term financing liabilities 6,045,019 149,807 — — 222,565 — 4,247 6,421,638 Lease liabilities 330,040 (67,628 ) — 67,716 4,346 — (17,045 ) 317,429 Derivative financial liabilities (assets) *2 11,615 599 (5,446 ) — (1,705 ) (38,946 ) — (33,883 ) Total ¥ 7,811,341 ¥ (96,734 ) ¥ (5,446 ) ¥ 67,716 ¥ 280,543 ¥ (38,946 ) ¥ (13,943 ) ¥ 8,004,531 For the year ended March 31, 2022 Yen (millions) Balance Cash flows Cash flows Non-cash Balance Acquisitions Changes Changes Other Short-term financing liabilities ¥ 1,299,347 ¥ (472,420 ) ¥ — ¥ — ¥ 78,863 ¥ — ¥ 753 ¥ 906,543 Long-term financing liabilities 6,421,638 238,060 — — 526,822 — 9,493 7,196,013 Lease liabilities 317,429 (80,165 ) — 84,413 6,096 — (9,015 ) 318,758 Derivative financial liabilities (assets) *2 (33,883 ) 3,202 (1,296 ) — 3,217 67,396 — 38,636 Total ¥ 8,004,531 ¥ (311,323 ) ¥ (1,296 ) ¥ 84,413 ¥ 614,998 ¥ 67,396 ¥ 1,231 ¥ 8,459,950 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. *2 Derivative financial liabilities (assets) are held by the Company and its
Current borrowings [member]
Statement [LineItems]
Summary of Financing Liabilities	Financing liabilities presented in current liabilities as of March 31, 2021 and 2022 consist of the following: Yen (millions) 2021 2022 Current: Commercial paper ¥ 839,292 ¥ 421,801 Loans 424,788 434,675 Asset-backed securities 35,267 50,067 Subtotal ¥ 1,299,347 ¥ 906,543 Reclassification from non-current ¥ 1,706,277 ¥ 2,211,761 Total ¥ 3,005,624 ¥ 3,118,304
Interest Rates for Financing Liabilities	The weighted average interest rates for financing liabilities presented in current liabilities (excluding reclassification from non-current 2021 2022 Weighted average interest rate 0.50 % 1.01 % The interest rate range and payment due date for financing liabilities presented in non-current liabilities (including reclassification to current liabilities) as of March 31, 202 1 2 2021 2022 Loans Interest rate: 0.07% - 11.00% Due: 2021 - 2046 Interest rate: 0.07% - 11.75% Due: 2022 Medium-term notes Interest rate: 0.33% - 3.80% Due: 2021 - 2031 Interest rate: 0.30% - 3.63% Due: 2022 - 2031 Corporate bonds Interest rate: 0.01% - 1.17% Due: 2021 - 2027 Interest rate: 0.01% - 2.97% Due: 2022 - 2032 Asset-backed securities Interest rate: 0.11% - 3.30% Due: 2021 - 2025 Interest rate: 0.11% - 3.30% Due: 2022 - 2025
Non-current liabilities [member]
Statement [LineItems]
Summary of Financing Liabilities	Financing liabilities presented in non-current Yen (millions) 2021 2022 Non-current: Loans ¥ 1,028,836 ¥ 1,026,769 Medium-term notes 3,701,153 3,996,486 Corporate bonds 657,068 1,035,379 Asset-backed securities 1,034,581 1,137,379 Subtotal ¥ 6,421,638 ¥ 7,196,013 Reclassification to current liabilities (Current portion) ¥ (1,706,277 ) ¥ (2,211,761 ) Total ¥ 4,715,361 ¥ 4,984,252

Other Financial Liabilities (Ta

Other Financial Liabilities (Tables)	12 Months Ended
	Mar. 31, 2022
Text block [Abstract]
Summary of Other Financial Liabilities	Other financial liabilities as of March 31, 2021 and 2022 consist of the following: Yen (millions) 2021 2022 Financial liabilities measured at amortized cost ¥ 63,269 ¥ 48,283 Financial liabilities measured at fair value through profit or loss: Derivatives 82,256 151,942 Lease liabilities 317,429 318,758 Total ¥ 462,954 ¥ 518,983 Current liabilities ¥ 182,145 ¥ 236,900 Non-current 280,809 282,083 Total ¥ 462,954 ¥ 518,983

Provisions (Tables)

Provisions (Tables)	12 Months Ended
	Mar. 31, 2022
Text block [Abstract]
Components of and Changes in Provisions	The components of and changes in provisions for the year ended March 31, 2022 Yen (millions) Product Other Total Balance as of April 1, 2021 ¥ 481,023 ¥ 160,018 ¥ 641,041 Provision ¥ 118,378 ¥ 23,329 ¥ 141,707 Write-offs (172,754 ) (88,823 ) (261,577 ) Reversal (36,882 ) (1,604 ) (38,486 ) Exchange differences on translating foreign operations 29,436 9,892 39,328 Balance as of March 31, 2022 ¥ 419,201 ¥ 102,812 ¥ 522,013
Current Liabilities and Non-current Liabilities of Provisions	Current liabilities and non-current Yen (millions) 2021 2022 Current liabilities ¥ 362,151 ¥ 268,388 Non-current 278,890 253,625 Total ¥ 641,041 ¥ 522,013

Employee Benefits (Tables)

Employee Benefits (Tables)	12 Months Ended
	Mar. 31, 2022
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, 2021 and 2022 are as follows: Yen (millions) 2021 2022 Japanese plans Foreign plans Japanese plans Foreign plans Present value of defined benefit obligations: Balance at beginning of year ¥ 1,357,044 ¥ 1,143,911 ¥ 1,305,054 ¥ 1,104,894 Current service cost 35,751 27,158 35,045 22,351 Past service cost — 9,941 — — Interest cost 7,530 29,445 8,360 29,822 Plan participants’ contributions — 3,764 — 3,657 Remeasurements: Changes in demographic assumptions (30,860 ) (11,669 ) 6,346 (777 ) Changes in financial assumptions (17,606 ) 51,885 (25,500 ) (85,754 ) Other 1,654 (7,040 ) 5,502 (3,603 ) Benefits paid (48,459 ) (200,249 ) (72,562 ) (82,561 ) Exchange differences on translating foreign operations — 57,748 — 99,497 Balance at end of year ¥ 1,305,054 ¥ 1,104,894 ¥ 1,262,245 ¥ 1,087,526 Fair value of plan assets: Balance at beginning of year ¥ 1,187,881 ¥ 848,503 ¥ 1,365,509 ¥ 910,436 Interest income 6,645 22,458 8,865 24,981 Actual return on plan assets, excluding interest income 194,475 126,176 21,172 50,833 Employer contributions 21,770 49,487 20,484 17,404 Plan participants’ contributions — 3,764 — 3,657 Benefits paid (45,262 ) (200,249 ) (60,754 ) (82,561 ) Exchange differences on translating foreign operations — 60,297 — 88,300 Balance at end of year ¥ 1,365,509 ¥ 910,436 ¥ 1,355,276 ¥ 1,013,050 Effects of asset ceiling — 2,774 — 35,321 Net defined benefit liabilities (assets) ¥ (60,455 ) ¥ 197,232 ¥ (93,031 ) ¥ 109,797
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, 2021 and 2022 is as follows: As of March 31, 2021 Yen (millions) Japanese plans Foreign plans Market price in active Market price in active Quoted Unquoted Total Quoted Unquoted Total Cash and cash equivalents ¥ 17,708 ¥ — ¥ 17,708 ¥ 17,736 ¥ — ¥ 17,736 Equity securities: Japan 37,137 28 37,165 11,099 — 11,099 United States 278,052 105 278,157 71,125 — 71,125 Other 285,412 239 285,651 41,302 — 41,302 Debt securities: Japan 63,856 — 63,856 — 343 343 United States 3,867 151,484 155,351 — 45,842 45,842 Other 168,460 64,850 233,310 — 8,697 8,697 Group annuity insurance: General accounts — 38,822 38,822 — — — Separate accounts — 20,290 20,290 — — — Pooled funds: Real estate funds — 404 404 — 68,686 68,686 Private equity funds — — — — 148,038 148,038 Hedge funds — 129,796 129,796 — 36,247 36,247 Commingled and other mutual funds 2,309 119,493 121,802 7,197 401,755 408,952 Other 112 (16,915 ) (16,803 ) 541 51,828 52,369 Total ¥ 856,913 ¥ 508,596 ¥ 1,365,509 ¥ 149,000 ¥ 761,436 ¥ 910,436 As of March 31, 2022 Yen (millions) Japanese plans Foreign plans Market price in active Market price in active Quoted Unquoted Total Quoted Unquoted Total Cash and cash equivalents ¥ 56,192 ¥ — ¥ 56,192 ¥ 15,147 ¥ — ¥ 15,147 Equity securities: Japan 32,349 — 32,349 9,483 — 9,483 United States 260,424 58 260,482 72,349 — 72,349 Other 248,143 276 248,419 51,606 — 51,606 Debt securities: Japan 65,388 — 65,388 — 575 575 United States 2,795 150,494 153,289 — 81,155 81,155 Other 173,477 71,516 244,993 — 7,100 7,100 Group annuity insurance: General accounts — 40,008 40,008 — — — Separate accounts — 22,317 22,317 — — — Pooled funds: Real estate funds — 402 402 — 87,540 87,540 Private equity funds — — — — 191,196 191,196 Hedge funds — 145,474 145,474 — 34,341 34,341 Commingled and other mutual funds 1,798 129,080 130,878 4,732 425,668 430,400 Other 67 (44,982 ) (44,915 ) 61 32,097 32,158 Total ¥ 840,633 ¥ 514,643 ¥ 1,355,276 ¥ 153,378 ¥ 859,672 ¥ 1,013,050
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, 2021 and 2022 are as follows: 2021 2022 Japanese plans Foreign plans Japanese plans Foreign plans Discount rate 0.7 % 2.1 - 3.4 % 0.8 % 2.8 - 4.0 % Rate of salary increase 1.5 % 2.0 - 3.1 % 1.5 % 2.0 - 3.6 %
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, 2021 and 2022 are as follows: Yen (millions) 2021 2022 Japanese plans Foreign plans Japanese plans Foreign plans 0.5% decrease ¥ 99,814 increase ¥ 103,059 increase ¥ 93,079 increase ¥ 86,569 increase 0.5% increase ¥ 88,788 decrease ¥ 91,523 decrease ¥ 83,077 decrease ¥ 78,153 decrease
Weighted Average Duration of Defined Benefit Obligations	The weighted average duration of defined benefit obligations as of March 31, 2021 and 2022 are as follows: 2021 2022 Japanese plans Foreign plans Japanese plans Foreign plans Weighted average duration of defined benefit obligations 14 years 17 years 14 years 14 years
Personnel Expenses Included in Consolidated Statements of Income	Personnel expenses included in the consolidated statements of income for the years ended March 31, 2020, 2021 and 2022 are as follows: Yen (millions) 2020 2021 2022 Personnel expenses ¥ 1,605,553 ¥ 1,470,748 ¥ 1,502,364

Equity (Tables)

Equity (Tables)	12 Months Ended
	Mar. 31, 2022
Text block [Abstract]
Financial Liabilities and Equity	Financing liabilities and equity of Honda as of March 31, 2021 and 2022 are as follows: Yen (millions) 2021 2022 Financing liabilities ¥ 7,720,985 ¥ 8,102,556 Equity 9,372,839 10,772,546
Total Number of Shares Authorized and Issued	The Company’s total number of shares authorized and issued for the years ended March 31, 2020, 2021 and 2022 are as follows: Shares 2020 2021 2022 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, 2020, 2021 and 2022 is as follows: Shares 2020 2021 2022 Common shares 84,818,644 84,773,162 100,828,074
Changes in Other Components of Equity	The changes in other components of equity for the years ended March 31, 2020, 2021 and 2022 are as follows: Yen (millions) Remeasurements of Net changes in revaluation of Exchange differences Total Balance as of April 1, 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 ) Adjustment during the year ¥ 239,801 ¥ 69,876 ¥ 247,655 ¥ 557,332 Reclassification to retained earnings (239,801 ) (6,182 ) — (245,983 ) Balance as of March 31, 2021 ¥ — ¥ 88,570 ¥ 108,140 ¥ 196,710 Adjustment during the year ¥ 117,489 ¥ 58,863 ¥ 736,578 ¥ 912,930 Reclassification to retained earnings (117,489 ) (1,713 ) — (119,202 ) Balance as of March 31, 2022 ¥ — ¥ 145,720 ¥ 844,718 ¥ 990,438
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, 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 ) For the year ended March 31, 2021 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 ¥ 327,604 ¥ (89,342 ) ¥ 238,262 Net changes 327,604 (89,342 ) 238,262 Net changes in revaluation of financial assets measured at fair value through other comprehensive income: Amount incurred during the year 93,450 (25,847 ) 67,603 Net changes 93,450 (25,847 ) 67,603 Share of other comprehensive income of investments accounted for using the equity method: Amount incurred during the year 5,186 (276 ) 4,910 Net changes 5,186 (276 ) 4,910 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 (107 ) 1 (106 ) Reclassification to profit or loss 82 (19 ) 63 Net changes (25 ) (18 ) (43 ) Exchange differences on translating foreign operations: Amount incurred during the year 239,097 — 239,097 Reclassification to profit or loss — — — Net changes 239,097 — 239,097 Share of other comprehensive income of investments accounted for using the equity method: Amount incurred during the year 27,046 377 27,423 Reclassification to profit or loss (73 ) — (73 ) Net changes 26,973 377 27,350 Total other comprehensive income ¥ 692,285 ¥ (115,106 ) ¥ 577,179 For the year ended March 31, 2022 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 ¥ 153,785 ¥ (36,743 ) ¥ 117,042 Net changes 153,785 (36,743 ) 117,042 Net changes in revaluation of financial assets measured at fair value through other comprehensive income: Amount incurred during the year 76,909 (18,274 ) 58,635 Net changes 76,909 (18,274 ) 58,635 Share of other comprehensive income of investments accounted for using the equity method: Amount incurred during the year 1,862 (76 ) 1,786 Net changes 1,862 (76 ) 1,786 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 (915 ) 203 (712 ) Reclassification to profit or loss 39 (9 ) 30 Net changes (876 ) 194 (682 ) Exchange differences on translating foreign operations: Amount incurred during the year 680,724 — 680,724 Reclassification to profit or loss — — — Net changes 680,724 — 680,724 Share of other comprehensive income of investments accounted for using the equity method: Amount incurred during the year 79,484 (1,972 ) 77,512 Reclassification to profit or loss (65 ) — (65 ) Net changes 79,419 (1,972 ) 77,447 Total other comprehensive income ¥ 991,823 ¥ (56,871 ) ¥ 934,952
Components of Other Comprehensive Income Included in Non-controlling Interests	The components of other comprehensive income included in non-controlling Yen (millions) 2020 2021 2022 Items that will not be reclassified to profit or loss: Remeasurements of defined benefit plans ¥ (753 ) ¥ 1,030 ¥ 565 Net changes in revaluation of financial assets measured at fair value through other comprehensive income (73 ) 25 (136 ) Items that may be reclassified subsequently to profit or loss: Exchange differences on translating foreign operations (18,924 ) 18,792 21,593 Total ¥ (19,750 ) ¥ 19,847 ¥ 22,022
Dividends from Retained Earnings	The amounts recognized as dividends of retained earnings for the years ended March 31, 2020, 2021 and 2022 are as follows: 1) Dividend payout 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 For the year ended March 31, 2021 Resolution The Board of Directors Meeting on May 12, 2020 Type of shares Common shares 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 Resolution The Board of Directors Meeting on August 5, 2020 Type of shares Common shares Total amount of dividends (millions of yen) 18,999 Dividend per share (yen) 11.00 Record date June 30, 2020 Effective date September 4, 2020 Resolution The Board of Directors Meeting on November 6, 2020 Type of shares Common shares Total amount of dividends (millions of yen) 32,818 Dividend per share (yen) 19.00 Record date September 30, 2020 Effective date December 2, 2020 Resolution The Board of Directors Meeting on February 9, 2021 Type of shares Common shares Total amount of dividends (millions of yen) 44,909 Dividend per share (yen) 26.00 Record date December 31, 2020 Effective date March 8, 2021 For the year ended March 31, 2022 Resolution The Board of Directors Meeting on May 1 4 Type of shares Common shares Total amount of dividends (millions of yen) 93,272 Dividend per share (yen) 54.00 Record date March 31, 2021 Effective date June 7 Resolution The Board of Directors Meeting on November 5 Type of shares Common shares Total amount of dividends (millions of yen) 95,130 Dividend per share (yen) 55.00 Record date September 30, 2021 Effective date December 1 2) Dividends payable of which record date was in the year ended March 31, 2022, effective after the period Resolution The Board of Directors Meeting on May 13 Type of shares Common shares Resource for dividend Retained earnings Total amount of dividends (millions of yen) 111,256 Dividend per share (yen) 65.00 Record date March 31, 2022 Effective date June 6

Sales Revenue (Tables)

Sales Revenue (Tables)	12 Months Ended
	Mar. 31, 2022
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 reportable segments for the years ended March 31, 2020, 2021 and 2022 are as follows: 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 For the year ended March 31, 2021 Yen (millions) Motorcycle Automobile Financial Life Total Revenue arising from contracts with customers Japan ¥ 88,128 ¥ 1,321,329 ¥ 128,265 ¥ 59,249 ¥ 1,596,971 North America 197,155 4,671,998 1,049,739 133,641 6,052,533 Europe 146,948 290,326 — 63,262 500,536 Asia 1,147,539 2,032,469 1 47,465 3,227,474 Other Regions 205,142 238,509 — 17,785 461,436 Total ¥ 1,784,912 ¥ 8,554,631 ¥ 1,178,005 ¥ 321,402 ¥ 11,838,950 Revenue arising from the other sources* 2,371 12,574 1,316,289 335 1,331,569 Total ¥ 1,787,283 ¥ 8,567,205 ¥ 2,494,294 ¥ 321,737 ¥ 13,170,519 For the year ended March 31, 2022 Yen (millions) Motorcycle Automobile Financial Life Total Revenue arising from contracts with customers Japan ¥ 105,022 ¥ 1,337,860 ¥ 146,185 ¥ 79,182 ¥ 1,668,249 North America 230,766 4,877,900 1,289,076 152,096 6,549,838 Europe 202,254 319,340 — 79,393 600,987 Asia 1,307,915 2,314,425 37 63,861 3,686,238 Other Regions 337,219 280,702 — 24,305 642,226 Total ¥ 2,183,176 ¥ 9,130,227 ¥ 1,435,298 ¥ 398,837 ¥ 13,147,538 Revenue arising from the other sources* 2,077 17,271 1,385,369 441 1,405,158 Total ¥ 2,185,253 ¥ 9,147,498 ¥ 2,820,667 ¥ 399,278 ¥ 14,552,696 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, 2021 and 2022 are as follows: Yen (millions) 2021 2022 Receivables from contracts with customers: Trade receivables ¥ 682,206 ¥ 785,157 Contract liabilities: Other current liabilities 232,580 261,049 Other noncurrent liabilities 169,684 193,845
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, 2021 and 2022 are as follows: Yen (millions) 2021 2022 Within 1 year ¥ 113,924 ¥ 127,377 Between 1 and 5 years 197,037 221,282 Later than 5 years 11,436 15,748 Total ¥ 322,397 ¥ 364,407
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, 2021 and 2022 are as follows: Yen (millions) 2021 2022 Assets recognized from the costs to obtain a contract with a customer ¥ 103,887 ¥ 128,864

Research and Development (Table

Research and Development (Tables)	12 Months Ended
	Mar. 31, 2022
Text block [Abstract]
Summary of Research and Development Costs	Research and development costs for the years ended March 31, 2020, 2021 and 2022 consist of the following: Yen (millions) 2020 2021 2022 Research and development expenditures incurred during the reporting period ¥ 821,478 ¥ 780,065 ¥ 804,025 Amount capitalized (192,397 ) (201,889 ) (159,174 ) Amortization and impairment losses of capitalized development costs 175,042 160,718 142,205 Total ¥ 804,123 ¥ 738,894 ¥ 787,056

Finance Income and Finance Co_2

Finance Income and Finance Costs (Tables)	12 Months Ended
	Mar. 31, 2022
Text block [Abstract]
Summary of Finance Income and Finance Costs	Finance income and finance costs for the years ended March 31, 2020, 2021 and 2022 Yen (millions) 2020 2021 2022 Interest income: Financial assets measured at amortized cost ¥ 47,679 ¥ 18,146 ¥ 22,847 Financial assets measured at fair value through other comprehensive income 249 196 185 Financial assets measured at fair value through profit or loss 1,484 1,463 2,595 Total 49,412 19,805 25,627 Interest expense: Financial liabilities measured at amortized cost (15,624 ) (12,269 ) (15,706 ) Other (9,065 ) (1,608 ) (1,161 ) Total (24,689 ) (13,877 ) (16,867 ) Other, net: Dividends received: Financial assets measured at fair value through other comprehensive income 5,169 3,372 4,777 Financial assets measured at fair value through profit or loss 25 0 — Gains (losses) on derivatives: Financial assets and financial liabilities measured at fair value through profit or loss (19,270 ) 15,102 (77,789 ) Gains (losses) on foreign exchange (24,942 ) (26,163 ) 68,033 Other 6,373 (17,128 ) (7,335 ) Total (32,645 ) (24,817 ) (12,314 ) Total ¥ (7,922 ) ¥ (18,889 ) ¥ (3,554 )

Income Taxes (Tables)

Income Taxes (Tables)	12 Months Ended
	Mar. 31, 2022
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, 2020, 2021 and 2022 consist of the following: Yen (millions) 2020 2021 2022 Japan Foreign Total Japan Foreign Total Japan Foreign Total Profit (loss) before income taxes ¥ (63,390 ) ¥ 853,308 ¥ 789,918 ¥ (32,954 ) ¥ 947,007 ¥ 914,053 ¥ (42,213 ) ¥ 1,112,403 ¥ 1,070,190 Income tax expense (benefit): Current taxes 11,036 233,570 244,606 7,236 174,694 181,930 9,539 277,894 287,433 Deferred taxes 17,470 17,910 35,380 (21,228 ) 57,907 36,679 (4,081 ) 26,137 22,056 Total ¥ 28,506 ¥ 251,480 ¥ 279,986 ¥ (13,992 ) ¥ 232,601 ¥ 218,609 ¥ 5,458 ¥ 304,031 ¥ 309,489
Reconciliation of Statutory Income Tax Rate to Average Effective Tax Rate	The Japanese statutory income tax rate for the years ended March 31, 2020, 2021 and 2022 differs from the average effective tax rate for the following reasons: 2020 2021 2022 Statutory income tax rate 30.2 % 30.2 % 30.2 % Difference in statutory income tax rates of foreign subsidiaries (3.9 ) (5.2 ) (4.5 ) Effects of investments accounted for using the equity method (6.2 ) (9.0 ) (5.7 ) Effects of undistributed earnings and withholding taxes on royalty 8.6 7.8 7.1 Changes in unrecognized deferred tax assets 7.8 1.2 1.4 Effects of income and expense not taxable and deductible for tax purpose 0.8 0.3 0.0 Effects of tax credit (3.0 ) (1.4 ) (0.9 ) Other adjustments relating to prior years (0.7 ) (0.1 ) (0.1 ) Adjustments for the uncertain tax treatments on income taxes 0.2 (0.8 ) 0.9 Adjustments for the changes in income tax laws 2.3 0.1 0.1 Other (0.7 ) 0.8 0.4 Average effective tax rate 35.4 % 23.9 % 28.9 %
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, 2021 and 2022 are as follows: Yen (millions) 2021 2022 Deferred tax assets: Inventories ¥ 33,616 ¥ 44,029 Accrued expenses 61,376 36,567 Provisions 89,470 100,408 Property, plant and equipment 25,534 27,592 Intangible assets 11,170 12,017 Retirement benefit liabilities 82,072 67,120 Carryforward of unused tax losses 64,844 67,787 Carryforward of unused tax credit 36,020 22,285 Other 117,873 103,114 Total ¥ 521,975 ¥ 480,919 Deferred tax liabilities: Property, plant and equipment ¥ 77,338 ¥ 82,518 Intangible assets 194,083 195,542 Other financial assets 38,027 61,580 Operating leases 751,892 846,978 Undistributed earnings 53,173 59,650 Other* 149,911 133,813 Total ¥ 1,264,424 ¥ 1,380,081 Net deferred tax assets (liabilities) ¥ (742,449 ) ¥ (899,162 ) Explanatory note: * The amount s and 2022 are ¥ million and ¥68,772 million, respectively.
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, 2020, 2021 and 2022 are as follows: Yen (millions) 2020 2021 2022 Inventories ¥ 8,738 ¥ (3,920 ) ¥ (9,865 ) Provisions 22,185 (10,708 ) (3,491 ) Property, plant and equipment (3,503 ) (6,955 ) (3,738 ) Retirement benefit liabilities (assets) 7,258 (10,353 ) (4,991 ) Operating leases (3,697 ) 37,506 (35,308 ) Undistributed earnings (1,059 ) (2,885 ) 4,198 Carryforward of unused tax losses (6,378 ) (7,695 ) (1,608 ) Carryforward of unused tax credit (8,423 ) 15,695 16,102 Other* 20,259 25,994 60,757 Total ¥ 35,380 ¥ 36,679 ¥ 22,056 * The income tax expenses recognized due to the decrease of deferred tax assets arising from accrued expenses included in other as of March 31, 2022 is ¥27,321 million.
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, 2021 and 2022 are as follows: Yen (millions) 2021 2022 Deductible temporary differences ¥ 519,457 ¥ 553,778 Carryforward of unused tax losses 514,420 693,323 Carryforward of unused tax credit 912 549
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, 2021 and 2022 are as follows: Yen (millions) 2021 2022 Within 1 year ¥ 24,886 ¥ 3,603 Between 1 and 5 years 62,361 73,448 Between 5 and 20 years 246,941 256,340 Indefinite periods 180,232 359,932 Total ¥ 514,420 ¥ 693,323
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, 2021 and 2022 are as follows: Yen (millions) 2021 2022 Within 1 year ¥ 349 ¥ 147 Between 1 and 5 years 371 259 Between 5 and 20 years 192 143 Indefinite periods — — Total ¥ 912 ¥ 549

Earnings Per Share (Tables)

Earnings Per Share (Tables)	12 Months Ended
	Mar. 31, 2022
Text block [Abstract]
Summary of Earnings Per Share	Earnings per share attributable to owners of the parent for the years ended March 31, 2020, 2021 and 2022 are calculated based on the following information. There were no significant dilutive potential common shares outstanding for the years ended March 31, 2020, 2021 and 2022. 2020 2021 2022 Profit for the year attributable to owners of the parent (millions of yen) ¥ 455,746 ¥ 657,425 ¥ 707,067 Weighted average number of common shares outstanding, basic (shares) 1,752,006,211 1,726,638,088 1,719,961,835 Basic earnings per share attributable to owners of the parent (yen) ¥ 260.13 ¥ 380.75 ¥ 411.09

Financial Risk Management (Tabl

Financial Risk Management (Tables)	12 Months Ended
	Mar. 31, 2022
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, 2021 and 2022 is as follows: Yen (millions) As of March 31, 2021 Less than 30 days 30-59 days 60-89 days 90 days and Total Consumer finance receivables: Retail ¥ 174,464 ¥ 27,923 ¥ 7,058 ¥ 5,938 ¥ 215,383 Finance lease 71 18 21 374 484 Dealer finance receivables: Wholesale 16,807 779 28 79 17,693 Total ¥ 191,342 ¥ 28,720 ¥ 7,107 ¥ 6,391 ¥ 233,560 Yen (millions) As of March 31, 2022 Less than 30 days 30-59 days 60-89 days 90 days and Total Consumer finance receivables: Retail ¥ 204,661 ¥ 43,051 ¥ 11,452 ¥ 7,512 ¥ 266,676 Finance lease 200 51 7 324 582 Dealer finance receivables: Wholesale 9,661 36 4 23 9,724 Total ¥ 214,522 ¥ 43,138 ¥ 11,463 ¥ 7,859 ¥ 276,982
Summary of retail receivables included in consumer finance receivables	The balances of retail receivables included in consumer finance receivables as of March 31, 2021 and 2022 are as follows: Yen (millions) 12-month Lifetime ECL Total As of March 31, 2021 Not credit-impaired Credit-impaired Consumer finance receivables: Retail* ¥ 4,563,496 ¥ 271,762 ¥ 12,648 ¥ 4,847,906 Yen (millions) 12-month Lifetime ECL Total As of March 31, 2022 Not credit-impaired Credit-impaired Consumer finance receivables: Retail* ¥ 4,897,471 ¥ 139,306 ¥ 17,651 ¥ 5,054,428 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, 2021 and 2022 are as follows: Yen (millions) 12-month ECL Lifetime ECL Total As of March 31, 2021 Not credit-impaired Credit-impaired Dealer finance receivables: Group A ¥ 247,487 ¥ 6,345 ¥ 1,903 ¥ 255,735 Group B 225,651 4,562 190 230,403 Total ¥ 473,138 ¥ 10,907 ¥ 2,093 ¥ 486,138 Loan commitments: Group A ¥ 68,050 ¥ — ¥ — ¥ 68,050 Group B 24,701 — — 24,701 Total ¥ 92,751 ¥ — ¥ — ¥ 92,751 The undiscounted maximum amount of potential payment for guarantees of bank loans of employees for their housing costs as of March 31, 2021 is ¥8,343 million. Yen (millions) 12-month ECL Lifetime ECL Total As of March 31, 2022 Not credit-impaired Credit-impaired Dealer finance receivables: Group A ¥ 188,101 ¥ 88 ¥ 2,117 ¥ 190,306 Group B 91,995 2,133 72 94,200 Total ¥ 280,096 ¥ 2,221 ¥ 2,189 ¥ 284,506 Loan commitments: Group A ¥ 95,485 ¥ — ¥ — ¥ 95,485 Group B 23,683 — — 23,683 Total ¥ 119,168 ¥ — ¥ — ¥ 119,168 The undiscounted maximum amount of potential payment for guarantees of bank loans of employees for their housing costs as of March 31, 2022 is ¥7,098 million.
Non-derivative Financial Liabilities by Maturity	Non-derivative Yen (millions) As of March 31, 2021 Carrying amount Within 1 year Between Later than Total contractual Trade payables ¥ 1,088,061 ¥ 1,088,061 ¥ — ¥ — ¥ 1,088,061 Financing liabilities 7,720,985 3,083,901 4,230,223 523,436 7,837,560 Accrued expenses 415,106 415,106 — — 415,106 Other financial liabilities 380,698 101,142 86,972 221,294 409,408 Total ¥ 9,604,850 ¥ 4,688,210 ¥ 4,317,195 ¥ 744,730 ¥ 9,750,135 Yen (millions) As of March 31, 2022 Carrying amount Within 1 year Between Later than Total contractual Trade payables ¥ 1,236,233 ¥ 1,236,233 ¥ — ¥ — ¥ 1,236,233 Financing liabilities 8,102,556 3,218,988 4,407,350 765,207 8,391,545 Accrued expenses 375,601 375,601 — — 375,601 Other financial liabilities 367,041 93,054 94,837 206,529 394,420 Total ¥ 10,081,431 ¥ 4,923,876 ¥ 4,502,187 ¥ 971,736 ¥ 10,397,799
Summary of Lease liabilities by maturity	Other financial liabilities include lease liabilities. Lease liabilities by maturity as of March 31, 2021 and 2022 are as follows: Yen (millions) As of March 31, 2021 Carrying amount Within 1 year Between Later than Total contractual Lease liabilities ¥ 317,429 ¥ 61,053 ¥ 79,836 ¥ 205,248 ¥ 346,137 Yen (millions) As of March 31, 2022 Carrying amount Within 1 year Between Later than Total contractual Lease liabilities ¥ 318,758 ¥ 71,510 ¥ 86,305 ¥ 188,321 ¥ 346,136
Derivative Financial Liabilities by Maturity	Derivative financial liabilities by maturity as of March 31, 2021 and 2022 are as follows: Yen (millions) As of March 31, 2021 Within 1 year Between 1 and 5 years Later than 5 years Total contractual Derivative financial liabilities ¥ 44,334 ¥ 30,218 ¥ 7,669 ¥ 82,221 Yen (millions) As of March 31, 2022 Within 1 year Between 1 and 5 years Later than 5 years Total contractual Derivative financial liabilities ¥ 53,895 ¥ 106,214 ¥ 25,140 ¥ 185,249
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 . Yen (millions) 2021 2022 Impact on profit before income taxes ¥ (1,097) ¥ (1,780)
Interest rate risk [member]
Statement [LineItems]
Market Risk Sensitivity Analysis	The following scenario demonstrates the impact of a 100 basis point rise in interest Yen (millions) 2021 2022 Impact on profit before income taxes ¥ (18,354) ¥ (25,830)
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, 2021 and 2022 are as follows: Yen (millions) 2021 2022 Commercial paper ¥ 760,677 ¥ 1,190,631 Medium-term notes 1,976,173 1,291,612 Total ¥ 2,736,850 ¥ 2,482,243
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, 2021 and 2022 are as follows: Yen (millions) 2021 2022 Commercial paper programs ¥ 1,122,892 ¥ 1,226,138 Other 65,472 67,976 Total ¥ 1,188,364 ¥ 1,294,114

Fair Value (Tables)

Fair Value (Tables)	12 Months Ended
	Mar. 31, 2022
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, 2021 and 2022 consist of the following: Yen (millions) As of March 31, 2021 Level 1 Level 2 Level 3 Total Other financial assets: Financial assets measured at fair value through profit or loss: Derivatives Foreign exchange instruments ¥ — ¥ 43,782 ¥ — ¥ 43,782 Interest rate instruments — 60,367 — 60,367 Other — — 4,829 4,829 Total — 104,149 4,829 108,978 Debt securities 26,570 36,439 5,314 68,323 Financial assets measured at fair value through other comprehensive income: Debt securities — 10,134 — 10,134 Equity securities 234,155 — 110,050 344,205 Total ¥ 260,725 ¥ 150,722 ¥ 120,193 ¥ 531,640 Other financial liabilities: Financial liabilities measured at fair value through profit or loss: Derivatives Foreign exchange instruments ¥ — ¥ 17,343 ¥ — ¥ 17,343 Interest rate instruments — 64,913 — 64,913 Total — 82,256 — 82,256 Total ¥ — ¥ 82,256 ¥ — ¥ 82,256 There were no transfers between Level 1 and Level 2 for the year ended March 31, 2021. Yen (millions) As of March 31, 2022 Level 1 Level 2 Level 3 Total Other financial assets: Financial assets measured at fair value through profit or loss: Derivatives Foreign exchange instruments ¥ — ¥ 15,674 ¥ — ¥ 15,674 Interest rate instruments — 114,016 — 114,016 Other — — 4,648 4,648 Total — 129,690 4,648 134,338 Debt securities 42,837 54,641 4,773 102,251 Financial assets measured at fair value through other comprehensive income: Debt securities — 19,984 — 19,984 Equity securities 335,745 — 133,038 468,783 Total ¥ 378,582 ¥ 204,315 ¥ 142,459 ¥ 725,356 Other financial liabilities: Financial liabilities measured at fair value through profit or loss: Derivatives Foreign exchange instruments ¥ — ¥ 66,644 ¥ — ¥ 66,644 Interest rate instruments — 83,669 — 83,669 Othe r — 1,629 — 1,629 Total — 151,942 — 151,942 Total ¥ — ¥ 151,942 ¥ — ¥ 151,942
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, 2021 and 2022 are as follows: Yen (millions) For the year ended March 31, 2021 Derivatives Debt securities Equity securities Balance as of April 1, 2020 ¥ — ¥ 5,224 ¥ 99,508 Total gains or losses: Profit or loss 4,665 (43 ) — Other comprehensive income — — 3,748 Purchases — — 7,701 Sales — — (1,243 ) Exchange differences on translating foreign operations 164 133 336 Balance as of March 31, 2021 ¥ 4,829 ¥ 5,314 ¥ 110,050 Unrealized gains or losses included in profit or loss on assets held at March 31, 2021 ¥ 4,665 ¥ (43 ) ¥ — Yen (millions) For the year ended March 31, 2022 Derivatives Debt securities Equity securities Balance as of April 1, 2021 ¥ 4,829 ¥ 5,314 ¥ 110,050 Total gains or losses: Profit or loss (674 ) 112 — Other comprehensive income — — 17,973 Purchases — — 7,075 Sales — (1,124 ) (1,487 ) Transfer to level 1 due to listing — — (1,158 ) Exchange differences on translating foreign operations 493 471 585 Balance as of March 31, 2022 ¥ 4,648 ¥ 4,773 ¥ 133,038 Unrealized gains or losses included in profit or loss on assets held at March 31, 2022 ¥ (674 ) ¥ 112 ¥ — Explanatory notes: 1. Gains or losses included in profit or loss for the years ended March 31, 2021 and 2022 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, 2021 and 2022 are included in net changes in revaluation of financial assets measured at fair value through other comprehensive income under items that
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, 2021 and 2022 are as follows: Yen (millions) 2021 2022 Carrying Fair value Carrying Fair value Receivables from financial services ¥ 5,414,550 ¥ 5,488,065 ¥ 5,434,496 ¥ 5,374,754 Debt securities 173,302 173,302 79,176 79,176 Financing liabilities 7,720,985 7,809,379 8,102,556 7,984,057

Offsetting of Financial Asset_2

Offsetting of Financial Assets and Financial Liabilities (Tables)	12 Months Ended
	Mar. 31, 2022
Text block [Abstract]
Offsetting Information Regarding Financial Assets and Financial Liabilities	The offsetting information regarding financial assets and financial liabilities as of March 31, 2021 and 2022 is as follows: Yen (millions) As of March 31, 2021 Gross amounts of Amounts offset Net amounts presented Amounts not offset due to not Net Amounts Other financial assets Derivatives ¥ 108,978 ¥ — ¥ 108,978 ¥ (65,430 ) ¥ 43,548 Other financial liabilities Derivatives 82,256 — 82,256 (65,430 ) 16,826 Yen (millions) As of March 31, 2022 Gross amounts of Amounts offset Net amounts presented Amounts not offset due to not Net Amounts Other financial assets Derivatives ¥ 134,338 ¥ — ¥ 134,338 ¥ (98,419 ) ¥ 35,919 Other financial liabilities Derivatives 151,942 — 151,942 (98,419 ) 53,523

Commitments and Contingent Li_2

Commitments and Contingent Liabilities (Tables)	12 Months Ended
	Mar. 31, 2022
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, 2021 and 2022 are as follows: Yen (millions) 2021 2022 Commitments for purchases of property, plant and equipment and other commitments ¥ 55,571 ¥ 60,527

Related Parties (Tables)

Related Parties (Tables)	12 Months Ended
	Mar. 31, 2022
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, 2021 and 2022 are as follows: Yen (millions) 2021 2022 Receivables: Affiliates ¥ 29,067 ¥ 34,317 Joint ventures 293,132 346,370 Total ¥ 322,199 ¥ 380,687 Payables: Affiliates ¥ 127,793 ¥ 147,705 Joint ventures 30,412 36,380 Total ¥ 158,205 ¥ 184,085
Amount of Transactions with Affiliates and Joint Ventures	The amount of the transactions with affiliates and joint ventures for the years ended March 31, 2020, 2021 and 2022 are as follows: Yen (millions) 2020 2021 2022 Sales revenue: Affiliates ¥ 109,615 ¥ 87,742 ¥ 93,187 Joint ventures 722,896 985,920 1,053,370 Total ¥ 832,511 ¥ 1,073,662 ¥ 1,146,557 Purchase: Affiliates ¥ 1,241,314 ¥ 1,015,921 ¥ 1,176,066 Joint ventures 166,885 150,123 194,321 Total ¥ 1,408,199 ¥ 1,166,044 ¥ 1,370,387
Compensation Paid to Directors	Compensation paid to the directors and executive officers of the Company for the years ended March 31, 2020, 2021 and 2022 are as follows: Yen (millions) 2020 2021 2022 Remuneration ¥ 691 ¥ 683 ¥ 696 STI (Short Term Incentive) 101 95 188 LTI (Long Term Incentive) 140 129 159 Total ¥ 932 ¥ 907 ¥ 1,043
Major Consolidated Subsidiaries	Major consolidated subsidiaries as of March 31, 2022 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. Coordination of Subsidiaries Operation, Research & Development, Manufacturing and Sales 100.0 Honda Aero., Inc. U.S.A. Research & Development and Manufacturing 100.0 American Honda Finance Corporation U.S.A. Finance 100.0 Honda Development and Manufacturing of America, LLC U.S.A. Research & Development and Manufacturing 100.0 Honda Aircraft Company, LLC U.S.A. Research & Development, Manufacturing and Sales 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 Operation and Sales 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 Operation and Sales 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 Philippines Inc. Philippines Manufacturing and Sales 99.6 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 and Sales 72.5 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

Significant Accounting Polici_3

Significant Accounting Policies - Additional Information (Detail)	12 Months Ended
	Mar. 31, 2022
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) - Segments	12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2020
Disclosure of operating segments [line items]
Number of reportable segments	4	4	4

Segment Information - Summary o

Segment Information - Summary of Segment Information (Detail) - JPY (¥) ¥ in Millions	12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2020
Disclosure of operating segments [line items]
Sales revenue	¥ 14,552,696	¥ 13,170,519	¥ 14,931,009
Segment profit (loss)	871,232	660,208	633,637
Share of profit of investments accounted for using the equity method	202,512	272,734	164,203
Segment assets	23,973,153	21,921,030	20,461,465
Investments accounted for using the equity method	967,404	891,002	655,475
Depreciation and amortization	1,476,908	1,425,118	1,461,403
Capital expenditures	2,503,820	2,567,104	2,858,339
Impairment losses on non-financial assets	15,224	4,763	94,216
Provision (reversal) for credit and lease residual losses on receivables from financial services	9,282	(5,038)	56,894
External customers [member]
Disclosure of operating segments [line items]
Sales revenue	14,552,696	13,170,519	14,931,009
Intersegment [member]
Disclosure of operating segments [line items]
Sales revenue
Operating segments [member]
Disclosure of operating segments [line items]
Sales revenue	14,790,927	13,415,264	15,205,564
Segment profit (loss)	871,232	660,208	633,637
Share of profit of investments accounted for using the equity method	202,512	272,734	164,203
Segment assets	22,806,359	21,404,980	19,941,995
Investments accounted for using the equity method	967,404	891,002	655,475
Depreciation and amortization	1,476,908	1,425,118	1,461,403
Capital expenditures	2,503,820	2,567,104	2,858,339
Impairment losses on non-financial assets	15,224	4,763	94,216
Provision (reversal) for credit and lease residual losses on receivables from financial services	9,282	(5,038)	56,894
Operating segments [member] | External customers [member]
Disclosure of operating segments [line items]
Sales revenue	14,552,696	13,170,519	14,931,009
Operating segments [member] | Intersegment [member]
Disclosure of operating segments [line items]
Sales revenue	238,231	244,745	274,555
Operating segments [member] | Motorcycle business [member]
Disclosure of operating segments [line items]
Sales revenue	2,185,253	1,787,283	2,059,335
Segment profit (loss)	311,492	224,608	285,668
Share of profit of investments accounted for using the equity method	33,510	18,164	34,526
Segment assets	1,448,926	1,555,057	1,483,888
Investments accounted for using the equity method	104,535	88,476	83,144
Depreciation and amortization	65,423	68,258	67,512
Capital expenditures	49,203	48,800	93,871
Impairment losses on non-financial assets	(23)	726	345
Provision (reversal) for credit and lease residual losses on receivables from financial services
Operating segments [member] | Motorcycle business [member] | External customers [member]
Disclosure of operating segments [line items]
Sales revenue	2,185,253	1,787,283	2,059,335
Operating segments [member] | Motorcycle business [member] | Intersegment [member]
Disclosure of operating segments [line items]
Sales revenue
Operating segments [member] | Automobile business [member]
Disclosure of operating segments [line items]
Sales revenue	9,360,593	8,779,349	10,194,638
Segment profit (loss)	236,207	90,255	153,323
Share of profit of investments accounted for using the equity method	168,415	254,079	129,114
Segment assets	9,563,553	8,643,109	7,821,499
Investments accounted for using the equity method	855,309	796,036	566,582
Depreciation and amortization	510,755	515,241	555,153
Capital expenditures	410,169	500,431	498,260
Impairment losses on non-financial assets	13,097	19,999	57,817
Provision (reversal) for credit and lease residual losses on receivables from financial services
Operating segments [member] | Automobile business [member] | External customers [member]
Disclosure of operating segments [line items]
Sales revenue	9,147,498	8,567,205	9,959,080
Operating segments [member] | Automobile business [member] | Intersegment [member]
Disclosure of operating segments [line items]
Sales revenue	213,095	212,144	235,558
Operating segments [member] | Financial services business [member]
Disclosure of operating segments [line items]
Sales revenue	2,823,323	2,506,788	2,600,937
Segment profit (loss)	333,032	356,980	219,704
Share of profit of investments accounted for using the equity method
Segment assets	11,318,756	10,832,645	10,282,136
Investments accounted for using the equity method
Depreciation and amortization	883,712	825,975	823,996
Capital expenditures	2,028,700	2,006,264	2,248,597
Impairment losses on non-financial assets	1,874	(16,319)	36,039
Provision (reversal) for credit and lease residual losses on receivables from financial services	9,282	(5,038)	56,894
Operating segments [member] | Financial services business [member] | External customers [member]
Disclosure of operating segments [line items]
Sales revenue	2,820,667	2,494,294	2,586,965
Operating segments [member] | Financial services business [member] | Intersegment [member]
Disclosure of operating segments [line items]
Sales revenue	2,656	12,494	13,972
Operating segments [member] | Life creation and other businesses [member]
Disclosure of operating segments [line items]
Sales revenue	421,758	341,844	350,654
Segment profit (loss)	(9,499)	(11,635)	(25,058)
Share of profit of investments accounted for using the equity method	587	491	563
Segment assets	475,124	374,169	354,472
Investments accounted for using the equity method	7,560	6,490	5,749
Depreciation and amortization	17,018	15,644	14,742
Capital expenditures	15,748	11,609	17,611
Impairment losses on non-financial assets	276	357	15
Provision (reversal) for credit and lease residual losses on receivables from financial services
Operating segments [member] | Life creation and other businesses [member] | External customers [member]
Disclosure of operating segments [line items]
Sales revenue	399,278	321,737	325,629
Operating segments [member] | Life creation and other businesses [member] | Intersegment [member]
Disclosure of operating segments [line items]
Sales revenue	22,480	20,107	25,025
Reconciling items [member]
Disclosure of operating segments [line items]
Sales revenue	(238,231)	(244,745)	(274,555)
Segment profit (loss)
Share of profit of investments accounted for using the equity method
Segment assets	1,166,794	516,050	519,470
Investments accounted for using the equity method
Depreciation and amortization
Capital expenditures
Impairment losses on non-financial assets
Provision (reversal) for credit and lease residual losses on receivables from financial services
Reconciling items [member] | External customers [member]
Disclosure of operating segments [line items]
Sales revenue
Reconciling items [member] | Intersegment [member]
Disclosure of operating segments [line items]
Sales revenue	¥ (238,231)	¥ (244,745)	¥ (274,555)

Segment Information - Summary_2

Segment Information - Summary of Segment Information (Parenthetical) (Detail) - JPY (¥) ¥ in Millions	12 Months Ended
	Mar. 31, 2022		Mar. 31, 2021	Mar. 31, 2020
Disclosure of operating segments [line items]
Segment assets	¥ 23,973,153		¥ 21,921,030	¥ 20,461,465
Provisions for product warranties	141,707
Write-down of inventories recognized as an expense	11,295		28,420	37,752
Unallocated corporate assets [member]
Disclosure of operating segments [line items]
Segment assets	1,319,995		696,327	787,022
Product warranties [member]
Disclosure of operating segments [line items]
Provisions for product warranties	¥ 118,378	[1]	¥ 272,076	¥ 212,275
[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, 2022	Mar. 31, 2021	Mar. 31, 2020
Disclosure of products and services [line items]
Sales revenue	¥ 14,552,696	¥ 13,170,519	¥ 14,931,009
Motorcycles and relevant parts [member]
Disclosure of products and services [line items]
Sales revenue	2,066,557	1,658,871	1,921,065
All-terrain vehicles (ATVs), side-by-sides (SxS) and relevant parts [member]
Disclosure of products and services [line items]
Sales revenue	118,696	128,412	138,270
Automobiles and relevant parts [member]
Disclosure of products and services [line items]
Sales revenue	10,582,764	9,746,374	11,199,477
Financial services [member]
Disclosure of products and services [line items]
Sales revenue	1,385,401	1,315,125	1,346,568
Power products and relevant parts [member]
Disclosure of products and services [line items]
Sales revenue	294,577	257,237	243,251
Others [member]
Disclosure of products and services [line items]
Sales revenue	¥ 104,701	¥ 64,500	¥ 82,378

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, 2022	Mar. 31, 2021	Mar. 31, 2020
Disclosure of geographical areas [line items]
Sales revenue	¥ 14,552,696	¥ 13,170,519	¥ 14,931,009
Non-current assets other than financial instruments, deferred tax assets and net defined benefit assets	9,296,091	8,934,468	8,584,666
External customers [member]
Disclosure of geographical areas [line items]
Sales revenue	14,552,696	13,170,519	14,931,009
Japan [member]
Disclosure of geographical areas [line items]
Non-current assets other than financial instruments, deferred tax assets and net defined benefit assets	3,036,832	3,050,270	3,003,416
Japan [member] | External customers [member]
Disclosure of geographical areas [line items]
Sales revenue	2,354,532	2,190,797	2,307,523
United States [member]
Disclosure of geographical areas [line items]
Non-current assets other than financial instruments, deferred tax assets and net defined benefit assets	4,490,562	4,242,405	4,007,268
United States [member] | External customers [member]
Disclosure of geographical areas [line items]
Sales revenue	6,728,800	6,291,857	7,091,136
Other Countries [member]
Disclosure of geographical areas [line items]
Non-current assets other than financial instruments, deferred tax assets and net defined benefit assets	1,768,697	1,641,793	1,573,982
Other Countries [member] | External customers [member]
Disclosure of geographical areas [line items]
Sales revenue	¥ 5,469,364	¥ 4,687,865	¥ 5,532,350

Segment Information - Supplemen

Segment Information - Supplemental Geographical Information Based on Location (Detail) - JPY (¥) ¥ in Millions	12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2020
Disclosure of geographical areas [line items]
Sales revenue	¥ 14,552,696	¥ 13,170,519	¥ 14,931,009
Operating profit (loss)	871,232	660,208	633,637
Assets	23,973,153	21,921,030	20,461,465
Non-current assets other than financial instruments, deferred tax assets and net defined benefit assets	9,296,091	8,934,468	8,584,666
External customers [member]
Disclosure of geographical areas [line items]
Sales revenue	14,552,696	13,170,519	14,931,009
Inter-geographic areas [member]
Disclosure of geographical areas [line items]
Sales revenue
Japan [member]
Disclosure of geographical areas [line items]
Non-current assets other than financial instruments, deferred tax assets and net defined benefit assets	3,036,832	3,050,270	3,003,416
Japan [member] | External customers [member]
Disclosure of geographical areas [line items]
Sales revenue	2,354,532	2,190,797	2,307,523
Material reconciling items [member]
Disclosure of geographical areas [line items]
Sales revenue	(238,231)	(244,745)	(274,555)
Operating profit (loss)
Assets	1,166,794	516,050	519,470
Material reconciling items [member] | External customers [member]
Disclosure of geographical areas [line items]
Sales revenue
Geographical consolidation [member]
Disclosure of geographical areas [line items]
Sales revenue	17,799,270	15,923,795	18,305,663
Operating profit (loss)	896,193	654,265	649,003
Assets	23,323,160	21,932,331	20,324,351
Non-current assets other than financial instruments, deferred tax assets and net defined benefit assets	9,296,091	8,934,468	8,584,666
Geographical consolidation [member] | External customers [member]
Disclosure of geographical areas [line items]
Sales revenue	14,552,696	13,170,519	14,931,009
Geographical consolidation [member] | Inter-geographic areas [member]
Disclosure of geographical areas [line items]
Sales revenue	3,246,574	2,753,276	3,374,654
Geographical consolidation [member] | Japan [member]
Disclosure of geographical areas [line items]
Sales revenue	4,359,286	3,867,835	4,422,934
Operating profit (loss)	6,411	(75,935)	(28,162)
Assets	5,318,033	5,295,475	4,889,920
Non-current assets other than financial instruments, deferred tax assets and net defined benefit assets	3,036,832	3,050,270	3,003,416
Geographical consolidation [member] | Japan [member] | External customers [member]
Disclosure of geographical areas [line items]
Sales revenue	2,354,532	2,190,797	2,307,523
Geographical consolidation [member] | Japan [member] | Inter-geographic areas [member]
Disclosure of geographical areas [line items]
Sales revenue	2,004,754	1,677,038	2,115,411
Geographical consolidation [member] | North America [member]
Disclosure of geographical areas [line items]
Sales revenue	8,090,187	7,480,837	8,556,819
Operating profit (loss)	501,073	455,888	305,315
Assets	12,983,779	12,209,455	11,375,801
Non-current assets other than financial instruments, deferred tax assets and net defined benefit assets	5,334,121	5,039,085	4,755,072
Geographical consolidation [member] | North America [member] | External customers [member]
Disclosure of geographical areas [line items]
Sales revenue	7,618,932	7,081,264	8,167,345
Geographical consolidation [member] | North America [member] | Inter-geographic areas [member]
Disclosure of geographical areas [line items]
Sales revenue	471,255	399,573	389,474
Geographical consolidation [member] | Europe [member]
Disclosure of geographical areas [line items]
Sales revenue	701,211	681,849	772,569
Operating profit (loss)	26,681	27,460	14,996
Assets	597,473	677,066	689,158
Non-current assets other than financial instruments, deferred tax assets and net defined benefit assets	49,129	60,790	58,735
Geographical consolidation [member] | Europe [member] | External customers [member]
Disclosure of geographical areas [line items]
Sales revenue	602,695	503,549	561,856
Geographical consolidation [member] | Europe [member] | Inter-geographic areas [member]
Disclosure of geographical areas [line items]
Sales revenue	98,516	178,300	210,713
Geographical consolidation [member] | Asia [member]
Disclosure of geographical areas [line items]
Sales revenue	4,055,447	3,458,779	3,859,701
Operating profit (loss)	339,129	251,886	319,565
Assets	3,803,877	3,267,417	2,851,027
Non-current assets other than financial instruments, deferred tax assets and net defined benefit assets	706,562	666,795	658,397
Geographical consolidation [member] | Asia [member] | External customers [member]
Disclosure of geographical areas [line items]
Sales revenue	3,393,323	2,966,814	3,207,470
Geographical consolidation [member] | Asia [member] | Inter-geographic areas [member]
Disclosure of geographical areas [line items]
Sales revenue	662,124	491,965	652,231
Geographical consolidation [member] | Other regions [member]
Disclosure of geographical areas [line items]
Sales revenue	593,139	434,495	693,640
Operating profit (loss)	22,899	(5,034)	37,289
Assets	619,998	482,918	518,445
Non-current assets other than financial instruments, deferred tax assets and net defined benefit assets	169,447	117,528	109,046
Geographical consolidation [member] | Other regions [member] | External customers [member]
Disclosure of geographical areas [line items]
Sales revenue	583,214	428,095	686,815
Geographical consolidation [member] | Other regions [member] | Inter-geographic areas [member]
Disclosure of geographical areas [line items]
Sales revenue	9,925	6,400	6,825
Reconciling items [member]
Disclosure of geographical areas [line items]
Sales revenue	(3,246,574)	(2,753,276)	(3,374,654)
Operating profit (loss)	(24,961)	5,943	(15,366)
Assets	649,993	(11,301)	137,114
Non-current assets other than financial instruments, deferred tax assets and net defined benefit assets
Reconciling items [member] | External customers [member]
Disclosure of geographical areas [line items]
Sales revenue
Reconciling items [member] | Inter-geographic areas [member]
Disclosure of geographical areas [line items]
Sales revenue	¥ (3,246,574)	¥ (2,753,276)	¥ (3,374,654)

Segment Information - Supplem_2

Segment Information - Supplemental Geographical Information Based on Location (Parenthetical) (Detail) - JPY (¥) ¥ in Millions	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2020
Disclosure of geographical areas [line items]
Assets	¥ 23,973,153	¥ 21,921,030	¥ 20,461,465
Unallocated corporate assets [member]
Disclosure of geographical areas [line items]
Assets	¥ 1,319,995	¥ 696,327	¥ 787,022

Cash and Cash Equivalents - Sum

Cash and Cash Equivalents - Summary of Cash and Cash Equivalents (Detail) - JPY (¥) ¥ in Millions	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2020	Mar. 31, 2019
Cash and cash equivalents [abstract]
Cash and deposits	¥ 2,654,447	¥ 2,037,392
Cash equivalents	1,020,484	720,628
Total	¥ 3,674,931	¥ 2,758,020	¥ 2,672,353	¥ 2,494,121

Trade Receivables - Summary of

Trade Receivables - Summary of Trade Receivables (Detail) - JPY (¥) ¥ in Millions	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2020	Mar. 31, 2019
Disclosure of financial assets [line items]
Trade receivables	¥ 896,768	¥ 801,814
Trade receivables [member]
Disclosure of financial assets [line items]
Allowance for impairment losses	(8,845)	(10,521)	¥ (11,302)	¥ (12,555)
Gross carrying amount [member] | Trade accounts and notes receivable [member]
Disclosure of financial assets [line items]
Trade receivables	793,022	689,347
Gross carrying amount [member] | Other [member]
Disclosure of financial assets [line items]
Trade receivables	¥ 112,591	¥ 122,988

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, 2022	Mar. 31, 2021	Mar. 31, 2020
Disclosure of financial assets [line items]
Balance at beginning of year	¥ 10,521	¥ 11,302	¥ 12,555
Remeasurement	260	516	589
Write-offs	(2,648)	(1,312)	(971)
Exchange differences on translating foreign operations	712	15	(871)
Balance at end of year	¥ 8,845	¥ 10,521	¥ 11,302

Receivables from Financial Se_3

Receivables from Financial Services - Summary of Receivables from Financial Services (Detail) - JPY (¥) ¥ in Millions		Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2020	Mar. 31, 2019
Disclosure of financial assets [line items]
Receivables from financial services		¥ 5,434,496	¥ 5,414,550
Unearned interest income and fees		(11,307)	(8,894)
Current assets		1,694,113	1,794,654
Non-current assets		3,740,383	3,619,896
Receivables from financial services		5,434,496	5,414,550
Retail [member]
Disclosure of financial assets [line items]
Receivables from financial services	[1]	5,054,428	4,847,906
Allowance for credit losses		(36,767)	(34,286)	¥ (60,241)	¥ (39,760)
Receivables from financial services	[1]	5,054,428	4,847,906
Finance lease [member]
Disclosure of financial assets [line items]
Allowance for credit losses		(487)	(813)	(690)	(730)
Wholesale [member]
Disclosure of financial assets [line items]
Receivables from financial services		284,506	486,138
Allowance for credit losses		(1,809)	(2,267)	¥ (2,537)	¥ (2,713)
Receivables from financial services		284,506	486,138
Gross carrying amount [member]
Disclosure of financial assets [line items]
Receivables from financial services		5,484,866	5,460,810
Receivables from financial services		5,484,866	5,460,810
Gross carrying amount [member] | Retail [member]
Disclosure of financial assets [line items]
Receivables from financial services		5,054,428	4,847,906
Receivables from financial services		5,054,428	4,847,906
Gross carrying amount [member] | Finance lease [member]
Disclosure of financial assets [line items]
Receivables from financial services		145,932	126,766
Receivables from financial services		145,932	126,766
Gross carrying amount [member] | Wholesale [member]
Disclosure of financial assets [line items]
Receivables from financial services		284,506	486,138
Receivables from financial services		284,506	486,138
Financial Services receivables [member]
Disclosure of financial assets [line items]
Allowance for credit losses		¥ (39,063)	¥ (37,366)
[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, 2022	Mar. 31, 2021
Disclosure of maturity analysis of finance lease payments receivable [line items]
Undiscounted lease payments receivable	¥ 77,142	¥ 62,446
Unearned finance income	(4,603)	(3,829)
Unguaranteed residual value	62,086	59,255
Net investment in the lease	134,625	117,872
Within 1 year [member]
Disclosure of maturity analysis of finance lease payments receivable [line items]
Gross investment in the lease	25,066	22,339
Between 1 and 2 years [member]
Disclosure of maturity analysis of finance lease payments receivable [line items]
Gross investment in the lease	25,569	22,566
Between 2 and 3 years [member]
Disclosure of maturity analysis of finance lease payments receivable [line items]
Gross investment in the lease	13,192	10,861
Between 3 and 4 years [member]
Disclosure of maturity analysis of finance lease payments receivable [line items]
Gross investment in the lease	9,335	5,297
Between 4 and 5 years [member]
Disclosure of maturity analysis of finance lease payments receivable [line items]
Gross investment in the lease	2,153	1,289
Later than 5 years [member]
Disclosure of maturity analysis of finance lease payments receivable [line items]
Gross investment in the lease	¥ 1,827	¥ 94

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, 2022	Mar. 31, 2021	Mar. 31, 2020
Retail [member]
Disclosure of financial assets [line items]
Balance at beginning of year	¥ 34,286	¥ 60,241	¥ 39,760
Remeasurement	10,263	(4,778)	54,833
Write-offs	(12,256)	(20,733)	(31,436)
Exchange differences on translating foreign operations	4,474	(444)	(2,916)
Balance at end of year	36,767	34,286	60,241
Finance lease [member]
Disclosure of financial assets [line items]
Balance at beginning of year	813	690	730
Remeasurement	(255)	142	142
Write-offs	(97)	(107)	(130)
Exchange differences on translating foreign operations	26	88	(52)
Balance at end of year	487	813	690
Wholesale [member]
Disclosure of financial assets [line items]
Balance at beginning of year	2,267	2,537	2,713
Remeasurement	(726)	(402)	1,905
Write-offs	30	18	(1,784)
Exchange differences on translating foreign operations	238	114	(297)
Balance at end of year	1,809	2,267	2,537
Financial Services receivables [member]
Disclosure of financial assets [line items]
Balance at beginning of year	37,366	63,468	43,203
Remeasurement	9,282	(5,038)	56,880
Write-offs	(12,323)	(20,822)	(33,350)
Exchange differences on translating foreign operations	4,738	(242)	(3,265)
Balance at end of year	39,063	37,366	63,468
12-month expected credit losses [member] | Retail [member]
Disclosure of financial assets [line items]
Balance at beginning of year	23,480	26,655	22,612
Remeasurement	(2,513)	(3,286)	5,547
Write-offs
Exchange differences on translating foreign operations	2,822	111	(1,504)
Balance at end of year	23,789	23,480	26,655
12-month expected credit losses [member] | Finance lease [member]
Disclosure of financial assets [line items]
Balance at beginning of year	470	481	534
Remeasurement	(339)	(65)	(15)
Write-offs
Exchange differences on translating foreign operations	8	54	(38)
Balance at end of year	139	470	481
12-month expected credit losses [member] | Wholesale [member]
Disclosure of financial assets [line items]
Balance at beginning of year	1,741	1,437	1,419
Remeasurement	(649)	160	127
Write-offs
Exchange differences on translating foreign operations	84	144	(109)
Balance at end of year	1,176	1,741	1,437
12-month expected credit losses [member] | Financial Services receivables [member]
Disclosure of financial assets [line items]
Balance at beginning of year	25,691	28,573	24,565
Remeasurement	(3,501)	(3,191)	5,659
Write-offs
Exchange differences on translating foreign operations	2,914	309	(1,651)
Balance at end of year	25,104	25,691	28,573
Lifetime expected credit losses [member] | Not credit impaired [member] | Retail [member]
Disclosure of financial assets [line items]
Balance at beginning of year	5,923	26,632	10,407
Remeasurement	(925)	(20,319)	16,637
Write-offs
Exchange differences on translating foreign operations	516	(390)	(412)
Balance at end of year	5,514	5,923	26,632
Lifetime expected credit losses [member] | Not credit impaired [member] | Finance lease [member]
Disclosure of financial assets [line items]
Balance at beginning of year	184	96	72
Remeasurement	(98)	71	29
Write-offs
Exchange differences on translating foreign operations	6	17	(5)
Balance at end of year	92	184	96
Lifetime expected credit losses [member] | Not credit impaired [member] | Wholesale [member]
Disclosure of financial assets [line items]
Balance at beginning of year	62	318	329
Remeasurement	(46)	(270)	2
Write-offs
Exchange differences on translating foreign operations	1	14	(13)
Balance at end of year	17	62	318
Lifetime expected credit losses [member] | Not credit impaired [member] | Financial Services receivables [member]
Disclosure of financial assets [line items]
Balance at beginning of year	6,169	27,046	10,808
Remeasurement	(1,069)	(20,518)	16,668
Write-offs
Exchange differences on translating foreign operations	523	(359)	(430)
Balance at end of year	5,623	6,169	27,046
Lifetime expected credit losses [member] | Credit impaired [member] | Retail [member]
Disclosure of financial assets [line items]
Balance at beginning of year	4,883	6,954	6,741
Remeasurement	13,701	18,827	32,649
Write-offs	(12,256)	(20,733)	(31,436)
Exchange differences on translating foreign operations	1,136	(165)	(1,000)
Balance at end of year	7,464	4,883	6,954
Lifetime expected credit losses [member] | Credit impaired [member] | Finance lease [member]
Disclosure of financial assets [line items]
Balance at beginning of year	159	113	124
Remeasurement	182	136	128
Write-offs	(97)	(107)	(130)
Exchange differences on translating foreign operations	12	17	(9)
Balance at end of year	256	159	113
Lifetime expected credit losses [member] | Credit impaired [member] | Wholesale [member]
Disclosure of financial assets [line items]
Balance at beginning of year	464	782	965
Remeasurement	(31)	(292)	1,776
Write-offs	30	18	(1,784)
Exchange differences on translating foreign operations	153	(44)	(175)
Balance at end of year	616	464	782
Lifetime expected credit losses [member] | Credit impaired [member] | Financial Services receivables [member]
Disclosure of financial assets [line items]
Balance at beginning of year	5,506	7,849	7,830
Remeasurement	13,852	18,671	34,553
Write-offs	(12,323)	(20,822)	(33,350)
Exchange differences on translating foreign operations	1,301	(192)	(1,184)
Balance at end of year	¥ 8,336	¥ 5,506	¥ 7,849

Other Financial Assets - Summar

Other Financial Assets - Summary of Other Financial Assets (Detail) - JPY (¥) ¥ in Millions	Mar. 31, 2022	Mar. 31, 2021
Disclosure of financial assets [line items]
Other financial assets	¥ 1,037,397	¥ 923,840
Current assets	217,743	295,307
Non-current assets	819,654	628,533
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	166,936	147,472
Financial assets measured at amortized cost [member] | Debt securities [member]
Disclosure of financial assets [line items]
Other financial assets	79,176	173,302
Financial assets measured at amortized cost [member] | Guaranty deposits [member]
Disclosure of financial assets [line items]
Other financial assets	11,499	12,006
Financial assets measured at amortized cost [member] | Restricted cash [member]
Disclosure of financial assets [line items]
Other financial assets	53,290	49,166
Financial assets measured at amortized cost [member] | Other [member]
Disclosure of financial assets [line items]
Other financial assets	4,352	13,612
Financial assets measured at amortized cost [member] | Allowance for impairment losses [member]
Disclosure of financial assets [line items]
Other financial assets	(3,212)	(3,358)
Financial assets measured at fair value through other comprehensive income [member] | Debt securities [member]
Disclosure of financial assets [line items]
Other financial assets	19,984	10,134
Financial assets measured at fair value through other comprehensive income [member] | Equity securities [member]
Disclosure of financial assets [line items]
Other financial assets	468,783	344,205
Financial assets measured at fair value through profit or loss [member] | Derivatives [member]
Disclosure of financial assets [line items]
Other financial assets	134,338	108,978
Financial assets measured at fair value through profit or loss [member] | Debt securities [member]
Disclosure of financial assets [line items]
Other financial assets	¥ 102,251	¥ 68,323

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, 2022	Mar. 31, 2021	Mar. 31, 2020
Disclosure of Doubtful Accounts for Other Financial Assets [line items]
Balance at beginning of year	¥ 3,358	¥ 3,364	¥ 4,233
Remeasurement	42	792	600
Write-offs	(191)	(805)	(1,463)
Exchange differences on translating foreign operations	3	7	(6)
Balance at end of year	¥ 3,212	¥ 3,358	¥ 3,364

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, 2022	Mar. 31, 2021
Contemporary Amperex Technology Co., Ltd. [member]
Disclosure of Doubtful Accounts for Other Financial Assets [line items]
Financial assets measured at fair value through other comprehensive income	¥ 226,938	¥ 124,782
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	105,916	94,324
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	21,463	30,431
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	11,026	8,581
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		6,670
SES AI Corporation
Disclosure of Doubtful Accounts for Other Financial Assets [line items]
Financial assets measured at fair value through other comprehensive income	8,307
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	¥ 7,789	¥ 5,753

Inventories - Summary of Invent

Inventories - Summary of Inventories (Detail) - JPY (¥) ¥ in Millions	Mar. 31, 2022	Mar. 31, 2021
Classes of current inventories [abstract]
Finished goods	¥ 907,872	¥ 784,544
Work in process	90,871	71,853
Raw materials	919,805	689,203
Total	¥ 1,918,548	¥ 1,545,600

Inventories - Additional Inform

Inventories - Additional Information (Detail) - JPY (¥) ¥ in Millions	12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2020
Classes of current inventories [abstract]
Write-down of inventories recognized as an expense	¥ 11,295	¥ 28,420	¥ 37,752

Investments Accounted for Usi_3

Investments Accounted for Using the Equity Method - Equity in Affiliates and Joint Ventures (Detail) - JPY (¥) ¥ in Millions	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2020
Investments accounted for using the equity method [abstract]
Investments accounted for using the equity method, Affiliates	¥ 544,563	¥ 537,702
Investments accounted for using the equity method, Joint ventures	422,841	353,300
Investments accounted for using the equity method, Total	967,404	891,002	¥ 655,475
Honda's equity of undistributed earnings, Affiliates	177,231	198,432
Honda's equity of undistributed earnings, Joint ventures	279,288	262,599
Honda's equity of undistributed earnings, Total	¥ 456,519	¥ 461,031

Investments Accounted for Usi_4

Investments Accounted for Using the Equity Method - Additional Information (Detail) - JPY (¥) ¥ in Millions		12 Months Ended
	Jan. 01, 2021	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2020
Disclosure of investments accounted for using equity method [line items]
Proportion of ownership interest in joint venture		50%
Investments accounted for using equity method [member] | Target Companies [member] | Automobile business [member]
Disclosure of investments accounted for using equity method [line items]
Reversal of impairment losses		¥ 0	¥ 56,849	¥ 0
Investments accounted for using equity method [member] | Hitachi Astemo Ltd [member]
Disclosure of investments accounted for using equity method [line items]
Percentage Voting Interest	33.40%

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, 2022	Mar. 31, 2021	Mar. 31, 2020
Disclosure of investments accounted for using equity method [line items]
Profit for the year	¥ 202,512	¥ 272,734	¥ 164,203
Other comprehensive income	79,233	32,260	(31,943)
Comprehensive income for the year	281,745	304,994	132,260
Affiliates [member]
Disclosure of investments accounted for using equity method [line items]
Profit for the year	(17,844)	53,511	(434)
Other comprehensive income	26,673	(1,197)	(5,758)
Comprehensive income for the year	8,829	52,314	(6,192)
Joint ventures [member]
Disclosure of investments accounted for using equity method [line items]
Profit for the year	220,356	219,223	164,637
Other comprehensive income	52,560	33,457	(26,185)
Comprehensive income for the year	¥ 272,916	¥ 252,680	¥ 138,452

Investments Accounted for Usi_6

Investments Accounted for Using the Equity Method - Summarized Consolidated Financial Information (Detail) - JPY (¥) ¥ in Millions	12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2020	Mar. 31, 2019
Disclosure of investments accounted for using equity method [line items]
Current assets	¥ 8,841,425	¥ 7,579,091
Non-current assets	15,131,728	14,341,939
Total assets	23,973,153	21,921,030	¥ 20,461,465
Current liabilities	6,004,399	5,715,457
Non-current liabilities	7,196,208	6,832,734
Total liabilities	13,200,607	12,548,191
Total equity	10,772,546	9,372,839	8,286,023	¥ 8,565,790
Cash and cash equivalents included in current assets	3,674,931	2,758,020	2,672,353	¥ 2,494,121
Sales revenue	14,552,696	13,170,519	14,931,009
Depreciation and amortization	1,476,908	1,425,118	1,461,403
Income tax expense	309,489	218,609	279,986
Profit for the year	760,701	695,444	509,932
Other comprehensive income	934,952	577,179	(451,209)
Comprehensive income for the year	1,695,653	1,272,623	58,723
Honda's share of comprehensive income for the year	281,745	304,994	132,260
Dongfeng Honda Automobile Co Ltd [member]
Disclosure of investments accounted for using equity method [line items]
Current assets	747,397	687,417
Non-current assets	252,219	238,507
Total assets	999,616	925,924
Current liabilities	610,379	608,408
Non-current liabilities	34,182	32,860
Total liabilities	644,561	641,268
Total equity	355,055	284,657
Carrying amount of its interest in the joint venture	176,830	141,116
Cash and cash equivalents included in current assets	301,839	332,031
Financial liabilities (excluding trade payables and provisions) included in current liabilities	6,168	5,363
Sales revenue	1,994,534	2,201,051	1,516,160
Interest income	10,653	9,412	8,019
Depreciation and amortization	25,996	23,055	18,870
Income tax expense	60,868	65,102	48,622
Profit for the year	182,989	197,217	130,327
Other comprehensive income	44,812	25,462	(21,100)
Comprehensive income for the year	227,801	222,679	109,227
Honda's share of comprehensive income for the year	114,508	111,393	54,667
Dividend from the joint venture to Honda	79,191	102,767	72,760
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	177,527	142,328
Comprehensive income for the year	113,901	111,340	54,614
Dongfeng Honda Automobile Co Ltd [member] | Equity method adjustments [member]
Disclosure of investments accounted for using equity method [line items]
Total equity	(697)	(1,212)
Comprehensive income for the year	¥ 607	¥ 53	¥ 53

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, 2022	Mar. 31, 2021	Mar. 31, 2020	Mar. 31, 2019
Disclosure of investments accounted for using equity method [line items]
Current assets	¥ 8,841,425	¥ 7,579,091
Non-current assets	15,131,728	14,341,939
Total assets	23,973,153	21,921,030	¥ 20,461,465
Current liabilities	6,004,399	5,715,457
Non-current liabilities	7,196,208	6,832,734
Total liabilities	13,200,607	12,548,191
Total equity	10,772,546	9,372,839	8,286,023	¥ 8,565,790
Sales revenue	14,552,696	13,170,519	14,931,009
Profit for the year	760,701	695,444	509,932
Affiliates [member]
Disclosure of investments accounted for using equity method [line items]
Current assets	1,621,051	1,524,434
Non-current assets	2,082,080	2,001,809
Total assets	3,703,131	3,526,243
Current liabilities	1,043,325	1,043,913
Non-current liabilities	589,376	621,271
Total liabilities	1,632,701	1,665,184
Total equity	2,070,430	1,861,059
Sales revenue	3,301,032	2,062,611	2,673,718
Profit for the year	81,398	5,988	78,347
Affiliates [member] | Motorcycle business [member]
Disclosure of investments accounted for using equity method [line items]
Current assets	64,324	54,369
Non-current assets	28,330	27,677
Total assets	92,654	82,046
Current liabilities	25,819	25,399
Non-current liabilities	5,003	3,167
Total liabilities	30,822	28,566
Total equity	61,832	53,480
Sales revenue	173,696	122,605	160,557
Profit for the year	7,233	2,552	8,094
Affiliates [member] | Automobile business [member]
Disclosure of investments accounted for using equity method [line items]
Current assets	1,542,414	1,458,252
Non-current assets	2,030,822	1,952,423
Total assets	3,573,236	3,410,675
Current liabilities	1,013,738	1,015,374
Non-current liabilities	583,308	616,924
Total liabilities	1,597,046	1,632,298
Total equity	1,976,190	1,778,377
Sales revenue	3,120,190	1,933,675	2,505,819
Profit for the year	73,169	2,593	69,339
Affiliates [member] | Life creation and other businesses [member]
Disclosure of investments accounted for using equity method [line items]
Current assets	14,313	11,813
Non-current assets	22,928	21,709
Total assets	37,241	33,522
Current liabilities	3,768	3,140
Non-current liabilities	1,065	1,180
Total liabilities	4,833	4,320
Total equity	32,408	29,202
Sales revenue	7,146	6,331	7,342
Profit for the year	996	843	914
Joint ventures [member]
Disclosure of investments accounted for using equity method [line items]
Current assets	2,088,314	1,774,519
Non-current assets	610,887	544,212
Total assets	2,699,201	2,318,731
Current liabilities	1,742,542	1,527,110
Non-current liabilities	89,109	79,226
Total liabilities	1,831,651	1,606,336
Total equity	867,550	712,395
Sales revenue	5,428,098	5,386,874	4,280,687
Profit for the year	438,912	436,377	328,603
Joint ventures [member] | Motorcycle business [member]
Disclosure of investments accounted for using equity method [line items]
Current assets	272,962	221,524
Non-current assets	130,271	120,238
Total assets	403,233	341,762
Current liabilities	227,215	191,565
Non-current liabilities	17,769	17,035
Total liabilities	244,984	208,600
Total equity	158,249	133,162
Sales revenue	811,764	543,504	791,250
Profit for the year	62,907	33,115	63,819
Joint ventures [member] | Automobile business [member]
Disclosure of investments accounted for using equity method [line items]
Current assets	1,810,581	1,548,875
Non-current assets	479,707	423,270
Total assets	2,290,288	1,972,145
Current liabilities	1,513,623	1,334,240
Non-current liabilities	70,675	61,312
Total liabilities	1,584,298	1,395,552
Total equity	705,990	576,593
Sales revenue	4,612,394	4,839,927	3,483,024
Profit for the year	375,642	403,088	264,216
Joint ventures [member] | Life creation and other businesses [member]
Disclosure of investments accounted for using equity method [line items]
Current assets	4,771	4,120
Non-current assets	909	704
Total assets	5,680	4,824
Current liabilities	1,704	1,305
Non-current liabilities	665	879
Total liabilities	2,369	2,184
Total equity	3,311	2,640
Sales revenue	3,940	3,443	6,413
Profit for the year	¥ 363	¥ 174	¥ 568

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, 2022	Mar. 31, 2021
Disclosure of detailed information about property, plant and equipment [line items]
Beginning balance	¥ 4,919,916
Ending balance	5,159,129	¥ 4,919,916
Cost [member]
Disclosure of detailed information about property, plant and equipment [line items]
Beginning balance	6,302,709	5,903,574
Additions	2,026,098	2,001,898
Sales or disposal	(2,171,117)	(1,777,101)
Exchange differences on translating foreign operations	509,447	174,338
Other
Ending balance	6,667,137	6,302,709
Accumulated depreciation and impairment losses [member]
Disclosure of detailed information about property, plant and equipment [line items]
Beginning balance	(1,382,793)	(1,277,511)
Depreciation	(879,196)	(821,963)
Sales or disposal	856,835	740,627
Exchange differences on translating foreign operations	(100,982)	(40,267)
Other	(1,872)	16,321
Ending balance	¥ (1,508,008)	¥ (1,382,793)

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, 2022	Mar. 31, 2021
Disclosure of maturity analysis of finance lease payments receivable [line items]
Future minimum lease payments expected to be received under non-cancelable operating leases	¥ 1,752,449	¥ 1,773,632
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	824,769	818,025
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	574,536	571,632
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	240,437	271,863
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	84,911	86,070
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	27,796	25,488
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	¥ 0	¥ 554

Equipment on Operating Leases_3

Equipment on Operating Leases - Additional Information (Detail) - JPY (¥) ¥ in Millions	12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Operating Lease Income [Abstract]
Operating lease income	¥ 1,134,898	¥ 1,069,374

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, 2022	Mar. 31, 2021
Disclosure of detailed information about property, plant and equipment [line items]
Beginning balance	¥ 3,021,514
Ending balance	3,079,407	¥ 3,021,514
Cost [member]
Disclosure of detailed information about property, plant and equipment [line items]
Beginning balance	9,091,944	8,747,967
Additions	366,829	390,081
Reclassification
Sales or disposal	(313,221)	(242,535)
Exchange differences on translating foreign operations	585,907	205,184
Other	(2,218)	(8,753)
Ending balance	9,729,241	9,091,944
Accumulated depreciation and impairment losses [member]
Disclosure of detailed information about property, plant and equipment [line items]
Beginning balance	(6,070,430)	(5,696,263)
Depreciation	(438,269)	(428,063)
Sales or disposal	275,951	199,925
Exchange differences on translating foreign operations	(413,586)	(141,796)
Other	(3,500)	(4,233)
Ending balance	(6,649,834)	(6,070,430)
Land [member]
Disclosure of detailed information about property, plant and equipment [line items]
Beginning balance	612,115
Ending balance	622,553	612,115
Land [member] | Cost [member]
Disclosure of detailed information about property, plant and equipment [line items]
Beginning balance	628,724	615,687
Additions	8,473	8,534
Reclassification	387	1,305
Sales or disposal	(4,151)	(3,469)
Exchange differences on translating foreign operations	11,585	6,735
Other	454	(68)
Ending balance	645,472	628,724
Land [member] | Accumulated depreciation and impairment losses [member]
Disclosure of detailed information about property, plant and equipment [line items]
Beginning balance	(16,609)	(10,517)
Depreciation	(7,087)	(6,118)
Sales or disposal	1,403	2,031
Exchange differences on translating foreign operations	(235)	(263)
Other	(391)	(1,742)
Ending balance	(22,919)	(16,609)
Buildings and structures [member]
Disclosure of detailed information about property, plant and equipment [line items]
Beginning balance	1,062,592
Ending balance	1,065,064	1,062,592
Buildings and structures [member] | Cost [member]
Disclosure of detailed information about property, plant and equipment [line items]
Beginning balance	2,558,905	2,468,194
Additions	26,268	28,538
Reclassification	28,766	50,529
Sales or disposal	(33,722)	(30,366)
Exchange differences on translating foreign operations	123,536	47,479
Other	(5,487)	(5,469)
Ending balance	2,698,266	2,558,905
Buildings and structures [member] | Accumulated depreciation and impairment losses [member]
Disclosure of detailed information about property, plant and equipment [line items]
Beginning balance	(1,496,313)	(1,394,982)
Depreciation	(88,928)	(89,997)
Sales or disposal	22,920	16,569
Exchange differences on translating foreign operations	(68,557)	(27,643)
Other	(2,324)	(260)
Ending balance	(1,633,202)	(1,496,313)
Machinery and equipment [member]
Disclosure of detailed information about property, plant and equipment [line items]
Beginning balance	1,131,697
Ending balance	1,155,219	1,131,697
Machinery and equipment [member] | Cost [member]
Disclosure of detailed information about property, plant and equipment [line items]
Beginning balance	5,687,117	5,441,813
Additions	102,835	79,952
Reclassification	199,242	233,463
Sales or disposal	(275,348)	(208,700)
Exchange differences on translating foreign operations	429,662	143,683
Other	4,421	(3,094)
Ending balance	6,147,929	5,687,117
Machinery and equipment [member] | Accumulated depreciation and impairment losses [member]
Disclosure of detailed information about property, plant and equipment [line items]
Beginning balance	(4,555,420)	(4,288,929)
Depreciation	(342,254)	(331,948)
Sales or disposal	251,628	181,325
Exchange differences on translating foreign operations	(344,775)	(113,736)
Other	(1,889)	(2,132)
Ending balance	(4,992,710)	(4,555,420)
Construction in progress [member]
Disclosure of detailed information about property, plant and equipment [line items]
Beginning balance	215,110
Ending balance	236,571	215,110
Construction in progress [member] | Cost [member]
Disclosure of detailed information about property, plant and equipment [line items]
Beginning balance	217,198	222,273
Additions	229,253	273,057
Reclassification	(228,395)	(285,297)
Sales or disposal
Exchange differences on translating foreign operations	21,124	7,287
Other	(1,606)	(122)
Ending balance	237,574	217,198
Construction in progress [member] | Accumulated depreciation and impairment losses [member]
Disclosure of detailed information about property, plant and equipment [line items]
Beginning balance	(2,088)	(1,835)
Depreciation
Sales or disposal
Exchange differences on translating foreign operations	(19)	(154)
Other	1,104	(99)
Ending balance	¥ (1,003)	¥ (2,088)

Property, Plant and Equipment -

Property, Plant and Equipment - Summary of Changes in the Carrying Amounts of the Right-of-Use Assets (Detail) - JPY (¥) ¥ in Millions	12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Disclosure Of Depreciation For The Right Of Use Assets [Line Items]
Opening Balance	¥ 295,330	¥ 306,042
Additions	88,424	68,787
Depreciation	(68,295)	(62,203)
Other	(7,759)	(17,296)
Ending balance	307,700	295,330
Land [member]
Disclosure Of Depreciation For The Right Of Use Assets [Line Items]
Opening Balance	80,543	77,916
Additions	8,283	8,488
Depreciation	(7,087)	(6,118)
Other	(102)	257
Ending balance	81,637	80,543
Buildings and structures [member]
Disclosure Of Depreciation For The Right Of Use Assets [Line Items]
Opening Balance	135,303	142,521
Additions	18,952	24,270
Depreciation	(15,882)	(12,997)
Other	(8,192)	(18,491)
Ending balance	130,181	135,303
Machinery and equipment [member]
Disclosure Of Depreciation For The Right Of Use Assets [Line Items]
Opening Balance	79,484	85,605
Additions	61,189	36,029
Depreciation	(45,326)	(43,088)
Other	535	938
Ending balance	¥ 95,882	¥ 79,484

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, 2022	Mar. 31, 2021
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]
Beginning balance	¥ 818,763
Ending balance	849,507	¥ 818,763
Cost [member]
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]
Beginning balance	1,598,743	1,522,447
Additions	19,832	30,469
Internally developed	179,485	213,443
Sales or disposal	(146,791)	(188,201)
Exchange differences on translating foreign operations	34,987	18,092
Other	(2,823)	2,493
Ending balance	1,683,433	1,598,743
Accumulated amortization and impairment losses [member]
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]
Beginning balance	(779,980)	(762,013)
Amortization	(159,443)	(175,092)
Sales or disposal	136,515	185,080
Exchange differences on translating foreign operations	(19,636)	(9,789)
Other	(11,382)	(18,166)
Ending balance	(833,926)	(779,980)
Capitalized development costs [member]
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]
Beginning balance	671,403
Ending balance	693,649	671,403
Capitalized development costs [member] | Cost [member]
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]
Beginning balance	1,108,616	1,083,525
Additions
Internally developed	159,174	201,889
Sales or disposal	(118,065)	(180,744)
Exchange differences on translating foreign operations	6,565	3,946
Other
Ending balance	1,156,290	1,108,616
Capitalized development costs [member] | Accumulated amortization and impairment losses [member]
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]
Beginning balance	(437,213)	(456,333)
Amortization	(129,384)	(144,795)
Sales or disposal	118,065	180,744
Exchange differences on translating foreign operations	(1,288)	(906)
Other	(12,821)	(15,923)
Ending balance	(462,641)	(437,213)
Software [member]
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]
Beginning balance	100,118
Ending balance	102,782	100,118
Software [member] | Cost [member]
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]
Beginning balance	429,222	392,732
Additions	8,597	19,233
Internally developed	20,311	11,554
Sales or disposal	(15,760)	(6,028)
Exchange differences on translating foreign operations	22,365	10,655
Other	(2,484)	1,076
Ending balance	462,251	429,222
Software [member] | Accumulated amortization and impairment losses [member]
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]
Beginning balance	(329,104)	(293,356)
Amortization	(29,290)	(29,646)
Sales or disposal	15,003	3,504
Exchange differences on translating foreign operations	(17,442)	(8,010)
Other	1,364	(1,596)
Ending balance	(359,469)	(329,104)
Other [member]
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]
Beginning balance	47,242
Ending balance	53,076	47,242
Other [member] | Cost [member]
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]
Beginning balance	60,905	46,190
Additions	11,235	11,236
Internally developed
Sales or disposal	(12,966)	(1,429)
Exchange differences on translating foreign operations	6,057	3,491
Other	(339)	1,417
Ending balance	64,892	60,905
Other [member] | Accumulated amortization and impairment losses [member]
Disclosure of reconciliation of changes in intangible assets and goodwill [line items]
Beginning balance	(13,663)	(12,324)
Amortization	(769)	(651)
Sales or disposal	3,447	832
Exchange differences on translating foreign operations	(906)	(873)
Other	75	(647)
Ending balance	¥ (11,816)	¥ (13,663)

Trade Payables - Summary of Tra

Trade Payables - Summary of Trade Payables (Detail) - JPY (¥) ¥ in Millions	Mar. 31, 2022	Mar. 31, 2021
Disclosure of financial liabilities [line items]
Trade payables	¥ 1,236,233	¥ 1,088,061
Trade accounts and notes payable [Member]
Disclosure of financial liabilities [line items]
Trade payables	1,047,623	943,833
Other [member]
Disclosure of financial liabilities [line items]
Trade payables	¥ 188,610	¥ 144,228

Financing Liabilities - Financi

Financing Liabilities - Financing Liabilities Presented in Current Liabilities (Detail) - JPY (¥) ¥ in Millions	Mar. 31, 2022	Mar. 31, 2021
Disclosure of detailed information about borrowings [line items]
Current financing liabilities	¥ 906,543	¥ 1,299,347
Reclassification from non-current liabilities (Current portion)	2,211,761	1,706,277
Total	3,118,304	3,005,624
Commercial paper [member]
Disclosure of detailed information about borrowings [line items]
Current financing liabilities	421,801	839,292
Loans [member]
Disclosure of detailed information about borrowings [line items]
Current financing liabilities	434,675	424,788
Asset-backed securities [member]
Disclosure of detailed information about borrowings [line items]
Current financing liabilities	¥ 50,067	¥ 35,267

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, 2022	Mar. 31, 2021
Current borrowings [member] | Weighted average [member]
Disclosure of detailed information about borrowings [line items]
Weighted average interest rate	1.01%	0.50%

Financing Liabilities - Finan_2

Financing Liabilities - Financing Liabilities Presented in Non-current Liabilities (Detail) - JPY (¥) ¥ in Millions	Mar. 31, 2022	Mar. 31, 2021
Disclosure of detailed information about borrowings [line items]
Non-current financing liabilities	¥ 7,196,013	¥ 6,421,638
Reclassification to current liabilities (Current portion)	(2,211,761)	(1,706,277)
Total	4,984,252	4,715,361
Loans [member]
Disclosure of detailed information about borrowings [line items]
Non-current financing liabilities	1,026,769	1,028,836
Medium-term notes [member]
Disclosure of detailed information about borrowings [line items]
Non-current financing liabilities	3,996,486	3,701,153
Corporate bonds [member]
Disclosure of detailed information about borrowings [line items]
Non-current financing liabilities	1,035,379	657,068
Asset-backed securities [member]
Disclosure of detailed information about borrowings [line items]
Non-current financing liabilities	¥ 1,137,379	¥ 1,034,581

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, 2022	Mar. 31, 2021
Loans [member] | Bottom of range [member]
Disclosure of financial instruments by type of interest rate [line items]
Interest rate	0.07%	0.07%
Payment due	2022	2021
Loans [member] | Top of range [member]
Disclosure of financial instruments by type of interest rate [line items]
Interest rate	11.75%	11%
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	0.30%	0.33%
Payment due	2022	2021
Medium-term notes [member] | Top of range [member]
Disclosure of financial instruments by type of interest rate [line items]
Interest rate	3.63%	3.80%
Payment due	2031	2031
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	2022	2021
Corporate bonds [member] | Top of range [member]
Disclosure of financial instruments by type of interest rate [line items]
Interest rate	2.97%	1.17%
Payment due	2032	2027
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	2022	2021
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	2025	2025

Financing Liabilities - Pledged

Financing Liabilities - Pledged Assets for Financing Liabilities (Detail) - JPY (¥) ¥ in Millions	Mar. 31, 2022	Mar. 31, 2021
Borrowings [abstract]
Trade receivables	¥ 15,298	¥ 19,789
Receivables from financial services	1,101,778	1,086,786
Equipment on operating leases	142,097	122,320
Property, plant and equipment	2,548	2,138
Total	¥ 1,261,721	¥ 1,231,033

Financing Liabilities - The Cha

Financing Liabilities - The Changes in Liabilities Arising from Financing Activities (Detail) - JPY (¥) ¥ in Millions		12 Months Ended
		Mar. 31, 2022	Mar. 31, 2021		Mar. 31, 2020
Disclosure of reconciliation of liabilities arising from financing activities [line items]
Changes in liabilities arising from financing activities, beginning balance		¥ 8,004,531	¥ 7,811,341		¥ 7,690,237
Cash flows from financing activities		(311,323)	(96,734)		264,017
Cash flows from operating activities		(1,296)	(5,446)		(10,001)
Non-cash changes, Acquisitions		84,413	67,716		78,923
Non-cash changes, Changes in foreign currency exchange rates		614,998	280,543		(217,190)
Non-cash changes, Changes in fair value		67,396	(38,946)		14,935
Non-cash changes, Other		1,231	(13,943)		(9,580)
Changes in liabilities arising from financing activities, ending balance		8,459,950	8,004,531		7,811,341
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		1,299,347	1,424,667		1,473,624
Cash flows from financing activities		(472,420)	(179,512)		(1,993)
Cash flows from operating activities
Non-cash changes, Acquisitions
Non-cash changes, Changes in foreign currency exchange rates		78,863	55,337		(42,424)
Non-cash changes, Changes in fair value
Non-cash changes, Other		753	(1,145)		(4,540)
Changes in liabilities arising from financing activities, ending balance		906,543	1,299,347		1,424,667
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		6,421,638	6,045,019		5,857,496
Cash flows from financing activities		238,060	149,807		362,131
Cash flows from operating activities
Non-cash changes, Acquisitions
Non-cash changes, Changes in foreign currency exchange rates		526,822	222,565		(170,345)
Non-cash changes, Changes in fair value
Non-cash changes, Other		9,493	4,247		(4,263)
Changes in liabilities arising from financing activities, ending balance		7,196,013	6,421,638		6,045,019
Lease liabilities [member]
Disclosure of reconciliation of liabilities arising from financing activities [line items]
Changes in liabilities arising from financing activities, beginning balance		317,429	330,040	[1]	334,540	[1]
Cash flows from financing activities		(80,165)	(67,628)		(78,659)	[1]
Cash flows from operating activities						[1]
Non-cash changes, Acquisitions		84,413	67,716		78,923	[1]
Non-cash changes, Changes in foreign currency exchange rates		6,096	4,346		(3,987)	[1]
Non-cash changes, Changes in fair value						[1]
Non-cash changes, Other		(9,015)	(17,045)		(777)	[1]
Changes in liabilities arising from financing activities, ending balance		318,758	317,429		330,040	[1]
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]	(33,883)	11,615		24,577
Cash flows from financing activities	[2]	3,202	599		(17,462)
Cash flows from operating activities	[2]	(1,296)	(5,446)		(10,001)
Non-cash changes, Acquisitions	[2]
Non-cash changes, Changes in foreign currency exchange rates	[2]	3,217	(1,705)		(434)
Non-cash changes, Changes in fair value	[2]	67,396	(38,946)		14,935
Non-cash changes, Other	[2]
Changes in liabilities arising from financing activities, ending balance	[2]	¥ 38,636	¥ (33,883)		¥ 11,615
[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.[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, 2022	Mar. 31, 2021	Apr. 01, 2019
Disclosure of reconciliation of liabilities arising from financing activities [line items]
Lease liabilities	¥ 318,758	¥ 317,429
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, 2022	Mar. 31, 2021
Disclosure of financial liabilities [line items]
Other financial liabilities	¥ 518,983	¥ 462,954
Current liabilities	236,900	182,145
Non-current liabilities	282,083	280,809
Other financial liabilities	518,983	462,954
Lease liabilities [member]
Disclosure of financial liabilities [line items]
Other financial liabilities	318,758	317,429
Other financial liabilities	318,758	317,429
Financial liabilities measured at amortized cost [member]
Disclosure of financial liabilities [line items]
Other financial liabilities	48,283	63,269
Other financial liabilities	48,283	63,269
Financial liabilities measured at fair value through profit or loss [member] | Derivatives [member]
Disclosure of financial liabilities [line items]
Other financial liabilities	151,942	82,256
Other financial liabilities	¥ 151,942	¥ 82,256

Provisions - Components of and

Provisions - Components of and Changes in Provisions (Detail) - JPY (¥) ¥ in Millions		12 Months Ended
		Mar. 31, 2022		Mar. 31, 2021	Mar. 31, 2020
Disclosure of other provisions [line items]
Beginning balance		¥ 641,041
Provision		141,707
Write-offs		(261,577)
Reversal		(38,486)
Exchange differences on translating foreign operations		39,328
Ending balance		522,013		¥ 641,041
Product warranties [member]
Disclosure of other provisions [line items]
Beginning balance	[1]	481,023
Provision		118,378	[1]	272,076	¥ 212,275
Write-offs	[1]	(172,754)
Reversal	[1]	(36,882)
Exchange differences on translating foreign operations	[1]	29,436
Ending balance	[1]	419,201		481,023
Other [member]
Disclosure of other provisions [line items]
Beginning balance		160,018
Provision		23,329
Write-offs		(88,823)
Reversal		(1,604)
Exchange differences on translating foreign operations		9,892
Ending balance		¥ 102,812		¥ 160,018
[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, 2022	Mar. 31, 2021
Disclosure of other provisions [abstract]
Current liabilities	¥ 268,388	¥ 362,151
Non-current liabilities	253,625	278,890
Total	¥ 522,013	¥ 641,041

Employee Benefits - Additional

Employee Benefits - Additional Information (Detail) ¥ in Millions	12 Months Ended
	Mar. 31, 2022 JPY (¥)
Japanese plans [member]
Disclosure of defined benefit plans [line items]
Contribiution in pension plan	¥ 19,919
Foreign plans [member]
Disclosure of defined benefit plans [line items]
Contribiution in pension plan	¥ 21,057

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, 2022	Mar. 31, 2021
Disclosure of net defined benefit liability (asset) [line items]
Net defined benefit liabilities (assets)	¥ (216,604)	¥ (168,488)
Japanese plans [member]
Disclosure of net defined benefit liability (asset) [line items]
Effects of asset ceiling
Net defined benefit liabilities (assets)	(93,031)	(60,455)
Foreign plans [member]
Disclosure of net defined benefit liability (asset) [line items]
Effects of asset ceiling	35,321	2,774
Net defined benefit liabilities (assets)	109,797	197,232
Present value of defined benefit obligations [member] | Japanese plans [member]
Disclosure of net defined benefit liability (asset) [line items]
Balance at beginning of year	1,305,054	1,357,044
Current service cost	35,045	35,751
Past service cost
Interest cost	8,360	7,530
Plan participants' contributions
Benefits paid	(72,562)	(48,459)
Exchange differences on translating foreign operations
Balance at end of year	1,262,245	1,305,054
Remeasurements:
Changes in demographic assumptions	6,346	(30,860)
Changes in financial assumptions	(25,500)	(17,606)
Other	5,502	1,654
Present value of defined benefit obligations [member] | Foreign plans [member]
Disclosure of net defined benefit liability (asset) [line items]
Balance at beginning of year	1,104,894	1,143,911
Current service cost	22,351	27,158
Past service cost		9,941
Interest cost	29,822	29,445
Plan participants' contributions	3,657	3,764
Benefits paid	(82,561)	(200,249)
Exchange differences on translating foreign operations	99,497	57,748
Balance at end of year	1,087,526	1,104,894
Remeasurements:
Changes in demographic assumptions	(777)	(11,669)
Changes in financial assumptions	(85,754)	51,885
Other	(3,603)	(7,040)
Fair value of plan assets [member] | Japanese plans [member]
Disclosure of net defined benefit liability (asset) [line items]
Balance at beginning of year	1,365,509	1,187,881
Interest income	8,865	6,645
Actual return on plan assets, excluding interest income	21,172	194,475
Employer contributions	20,484	21,770
Plan participants' contributions
Benefits paid	(60,754)	(45,262)
Exchange differences on translating foreign operations
Balance at end of year	1,355,276	1,365,509
Fair value of plan assets [member] | Foreign plans [member]
Disclosure of net defined benefit liability (asset) [line items]
Balance at beginning of year	910,436	848,503
Interest income	24,981	22,458
Actual return on plan assets, excluding interest income	50,833	126,176
Employer contributions	17,404	49,487
Plan participants' contributions	3,657	3,764
Benefits paid	(82,561)	(200,249)
Exchange differences on translating foreign operations	88,300	60,297
Balance at end of year	¥ 1,013,050	¥ 910,436

Employee Benefits - Changes i_2

Employee Benefits - Changes in Present Value of Defined Benefit Obligations and Fair Value of Plan Assets (Parenthetical) (Detail) - JPY (¥) ¥ in Millions	Mar. 31, 2022	Mar. 31, 2021
Disclosure of net defined benefit liability (asset) [line items]
Net defined benefit liabilities (assets)	¥ 216,604	¥ 168,488

Employee Benefits - Fair Value

Employee Benefits - Fair Value of Japanese and Foreign Pension Plan Assets By Asset Category (Detail) - JPY (¥) ¥ in Millions	Mar. 31, 2022	Mar. 31, 2021
Japanese plans [member]
Disclosure of fair value of plan assets [line items]
Cash and cash equivalents	¥ 56,192	¥ 17,708
General accounts	40,008	38,822
Separate accounts	22,317	20,290
Other	(44,915)	(16,803)
Total	1,355,276	1,365,509
Japanese plans [member] | Real estate funds [member]
Disclosure of fair value of plan assets [line items]
Pooled funds	402	404
Japanese plans [member] | Private equity funds [member]
Disclosure of fair value of plan assets [line items]
Pooled funds
Japanese plans [member] | Hedge funds [member]
Disclosure of fair value of plan assets [line items]
Pooled funds	145,474	129,796
Japanese plans [member] | Commingled and other mutual funds [member]
Disclosure of fair value of plan assets [line items]
Pooled funds	130,878	121,802
Japanese plans [member] | Japan [member]
Disclosure of fair value of plan assets [line items]
Equity securities	32,349	37,165
Debt securities	65,388	63,856
Japanese plans [member] | United States [member]
Disclosure of fair value of plan assets [line items]
Equity securities	260,482	278,157
Debt securities	153,289	155,351
Japanese plans [member] | Other [member]
Disclosure of fair value of plan assets [line items]
Equity securities	248,419	285,651
Debt securities	244,993	233,310
Japanese plans [member] | Quoted, Market price in active market [member]
Disclosure of fair value of plan assets [line items]
Cash and cash equivalents	56,192	17,708
General accounts
Separate accounts
Other	67	112
Total	840,633	856,913
Japanese plans [member] | Quoted, Market price in active market [member] | Real estate funds [member]
Disclosure of fair value of plan assets [line items]
Pooled funds
Japanese plans [member] | Quoted, Market price in active market [member] | Private equity funds [member]
Disclosure of fair value of plan assets [line items]
Pooled funds
Japanese plans [member] | Quoted, Market price in active market [member] | Hedge funds [member]
Disclosure of fair value of plan assets [line items]
Pooled funds
Japanese plans [member] | Quoted, Market price in active market [member] | Commingled and other mutual funds [member]
Disclosure of fair value of plan assets [line items]
Pooled funds	1,798	2,309
Japanese plans [member] | Quoted, Market price in active market [member] | Japan [member]
Disclosure of fair value of plan assets [line items]
Equity securities	32,349	37,137
Debt securities	65,388	63,856
Japanese plans [member] | Quoted, Market price in active market [member] | United States [member]
Disclosure of fair value of plan assets [line items]
Equity securities	260,424	278,052
Debt securities	2,795	3,867
Japanese plans [member] | Quoted, Market price in active market [member] | Other [member]
Disclosure of fair value of plan assets [line items]
Equity securities	248,143	285,412
Debt securities	173,477	168,460
Japanese plans [member] | Unquoted, Market price in active market [member]
Disclosure of fair value of plan assets [line items]
Cash and cash equivalents
General accounts	40,008	38,822
Separate accounts	22,317	20,290
Other	(44,982)	(16,915)
Total	514,643	508,596
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	402	404
Japanese plans [member] | Unquoted, Market price in active market [member] | Private equity funds [member]
Disclosure of fair value of plan assets [line items]
Pooled funds
Japanese plans [member] | Unquoted, Market price in active market [member] | Hedge funds [member]
Disclosure of fair value of plan assets [line items]
Pooled funds	145,474	129,796
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	129,080	119,493
Japanese plans [member] | Unquoted, Market price in active market [member] | Japan [member]
Disclosure of fair value of plan assets [line items]
Equity securities	0	28
Debt securities
Japanese plans [member] | Unquoted, Market price in active market [member] | United States [member]
Disclosure of fair value of plan assets [line items]
Equity securities	58	105
Debt securities	150,494	151,484
Japanese plans [member] | Unquoted, Market price in active market [member] | Other [member]
Disclosure of fair value of plan assets [line items]
Equity securities	276	239
Debt securities	71,516	64,850
Foreign plans [member]
Disclosure of fair value of plan assets [line items]
Cash and cash equivalents	15,147	17,736
General accounts
Separate accounts
Other	32,158	52,369
Total	1,013,050	910,436
Foreign plans [member] | Real estate funds [member]
Disclosure of fair value of plan assets [line items]
Pooled funds	87,540	68,686
Foreign plans [member] | Private equity funds [member]
Disclosure of fair value of plan assets [line items]
Pooled funds	191,196	148,038
Foreign plans [member] | Hedge funds [member]
Disclosure of fair value of plan assets [line items]
Pooled funds	34,341	36,247
Foreign plans [member] | Commingled and other mutual funds [member]
Disclosure of fair value of plan assets [line items]
Pooled funds	430,400	408,952
Foreign plans [member] | Japan [member]
Disclosure of fair value of plan assets [line items]
Equity securities	9,483	11,099
Debt securities	575	343
Foreign plans [member] | United States [member]
Disclosure of fair value of plan assets [line items]
Equity securities	72,349	71,125
Debt securities	81,155	45,842
Foreign plans [member] | Other [member]
Disclosure of fair value of plan assets [line items]
Equity securities	51,606	41,302
Debt securities	7,100	8,697
Foreign plans [member] | Quoted, Market price in active market [member]
Disclosure of fair value of plan assets [line items]
Cash and cash equivalents	15,147	17,736
General accounts
Separate accounts
Other	61	541
Total	153,378	149,000
Foreign plans [member] | Quoted, Market price in active market [member] | Real estate funds [member]
Disclosure of fair value of plan assets [line items]
Pooled funds
Foreign plans [member] | Quoted, Market price in active market [member] | Private equity funds [member]
Disclosure of fair value of plan assets [line items]
Pooled funds
Foreign plans [member] | Quoted, Market price in active market [member] | Hedge funds [member]
Disclosure of fair value of plan assets [line items]
Pooled funds
Foreign plans [member] | Quoted, Market price in active market [member] | Commingled and other mutual funds [member]
Disclosure of fair value of plan assets [line items]
Pooled funds	4,732	7,197
Foreign plans [member] | Quoted, Market price in active market [member] | Japan [member]
Disclosure of fair value of plan assets [line items]
Equity securities	9,483	11,099
Debt securities
Foreign plans [member] | Quoted, Market price in active market [member] | United States [member]
Disclosure of fair value of plan assets [line items]
Equity securities	72,349	71,125
Debt securities
Foreign plans [member] | Quoted, Market price in active market [member] | Other [member]
Disclosure of fair value of plan assets [line items]
Equity securities	51,606	41,302
Debt securities
Foreign plans [member] | Unquoted, Market price in active market [member]
Disclosure of fair value of plan assets [line items]
Cash and cash equivalents
General accounts
Separate accounts
Other	32,097	51,828
Total	859,672	761,436
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	87,540	68,686
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	191,196	148,038
Foreign plans [member] | Unquoted, Market price in active market [member] | Hedge funds [member]
Disclosure of fair value of plan assets [line items]
Pooled funds	34,341	36,247
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	425,668	401,755
Foreign plans [member] | Unquoted, Market price in active market [member] | Japan [member]
Disclosure of fair value of plan assets [line items]
Equity securities
Debt securities	575	343
Foreign plans [member] | Unquoted, Market price in active market [member] | United States [member]
Disclosure of fair value of plan assets [line items]
Equity securities
Debt securities	81,155	45,842
Foreign plans [member] | Unquoted, Market price in active market [member] | Other [member]
Disclosure of fair value of plan assets [line items]
Equity securities
Debt securities	¥ 7,100	¥ 8,697

Employee Benefits - Significant

Employee Benefits - Significant Actuarial Assumptions Used to Determine Present Value of Defined Benefit Obligations (Detail)	Mar. 31, 2022	Mar. 31, 2021
Japanese plans [member]
Disclosure of defined benefit plans [line items]
Discount rate	0.80%	0.70%
Rate of salary increase	1.50%	1.50%
Foreign plans [member] | Bottom of range [member]
Disclosure of defined benefit plans [line items]
Discount rate	2.80%	2.10%
Rate of salary increase	2%	2%
Foreign plans [member] | Top of range [member]
Disclosure of defined benefit plans [line items]
Discount rate	4%	3.40%
Rate of salary increase	3.60%	3.10%

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, 2022	Mar. 31, 2021
Japanese plans [member]
Disclosure of sensitivity analysis for actuarial assumptions [line items]
Effects on defined benefit obligations from a decrease in the discount rate	¥ 93,079	¥ 99,814
Effects on defined benefit obligations from a increase in the discount rate	83,077	88,788
Foreign plans [member]
Disclosure of sensitivity analysis for actuarial assumptions [line items]
Effects on defined benefit obligations from a decrease in the discount rate	86,569	103,059
Effects on defined benefit obligations from a increase in the discount rate	¥ 78,153	¥ 91,523

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, 2022
Disclosure of sensitivity analysis for actuarial assumptions [line items]
Percentage of decrease in the discount rate	0.50%
Percentage of increase in the discount rate	0.50%

Employee Benefits - Weighted Av

Employee Benefits - Weighted Average Duration of Defined Benefit Obligations (Detail)	12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Japanese plans [member]
Disclosure of defined benefit plans [line items]
Weighted average duration of defined benefit obligations	14 years	14 years
Foreign plans [member]
Disclosure of defined benefit plans [line items]
Weighted average duration of defined benefit obligations	14 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, 2022	Mar. 31, 2021	Mar. 31, 2020
Disclosure of defined benefit plans [abstract]
Personnel expenses	¥ 1,502,364	¥ 1,470,748	¥ 1,605,553

Equity - Financial Liabilities

Equity - Financial Liabilities and Equity (Detail) - JPY (¥) ¥ in Millions	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2020	Mar. 31, 2019
Equity and liabilities [abstract]
Financing liabilities	¥ 8,102,556	¥ 7,720,985
Equity	¥ 10,772,546	¥ 9,372,839	¥ 8,286,023	¥ 8,565,790

Equity - Total Number of Shares

Equity - Total Number of Shares Authorized and Issued (Detail) - shares	12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2020
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, 2022
Disclosure of classes of share capital [line items]
Percentage of cash dividends from retained earnings shall be appropriated as a capital reserve	10%
Percentage of capital reserve and legal reserve to common stock	25%
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%

Equity - Total Number of Treasu

Equity - Total Number of Treasury Stock Held (Detail) - shares	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2020	Mar. 31, 2019
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	100,828,074	84,773,162	84,818,644

Equity - Changes in Other Compo

Equity - Changes in Other Components of Equity (Detail) - JPY (¥) ¥ in Millions	12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2020
Disclosure of reserves within equity [line items]
Beginning balance	¥ 9,372,839	¥ 8,286,023	¥ 8,565,790
Adjustment during the year	934,952	577,179	(451,209)
Reclassification to retained earnings
Ending balance	10,772,546	9,372,839	8,286,023
Remeasurements of defined benefit plans [member]
Disclosure of reserves within equity [line items]
Beginning balance
Adjustment during the year	117,489	239,801	(102,230)
Reclassification to retained earnings	(117,489)	(239,801)	102,230
Ending balance	0
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	88,570	24,876	49,228
Adjustment during the year	58,863	69,876	(24,559)
Reclassification to retained earnings	(1,713)	(6,182)	207
Ending balance	145,720	88,570	24,876
Exchange differences on translating foreign operations [member]
Disclosure of reserves within equity [line items]
Beginning balance	108,140	(139,515)	165,155
Adjustment during the year	736,578	247,655	(304,670)
Reclassification to retained earnings	0
Ending balance	844,718	108,140	(139,515)
Other components of equity [member]
Disclosure of reserves within equity [line items]
Beginning balance	196,710	(114,639)	214,383
Adjustment during the year	912,930	557,332	(431,459)
Reclassification to retained earnings	(119,202)	(245,983)	102,437
Ending balance	¥ 990,438	¥ 196,710	¥ (114,639)

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, 2022	Mar. 31, 2021	Mar. 31, 2020
Items that will not be reclassified to profit or loss, Before-tax:
Remeasurements of defined benefit plans, Net changes, Before-tax	¥ 153,785	¥ 327,604	¥ (132,188)
Net changes in revaluation of financial assets measured at fair value through other comprehensive income, Net changes, Before-tax	76,909	93,450	(33,565)
Share of other comprehensive income of investments accounted for using the equity method, Net changes, Before-tax	1,862	5,186	(1,735)
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	(915)	(107)	356
Net changes in revaluation of financial assets measured at fair value through other comprehensive income, Reclassification to profit or loss, Before-tax	39	82	(31)
Net changes in revaluation of financial assets measured at fair value through other comprehensive income, Net changes, Before-tax	(876)	(25)	325
Exchange differences on translating foreign operations, Amount incurred during the year, Before-tax	680,724	239,097	(292,590)
Exchange differences on translating foreign operations, Reclassification to profit or loss, Before-tax	0		(611)
Exchange differences on translating foreign operations, Net changes, Before-tax	680,724	239,097	(293,201)
Share of other comprehensive income of investments accounted for using the equity method, Amount incurred during the year, Before-tax	79,484	27,046	(31,054)
Share of other comprehensive income of investments accounted for using the equity method, Reclassification to profit or loss, Before-tax	(65)	(73)
Share of other comprehensive income of investments accounted for using the equity method, Net changes, Before-tax	79,419	26,973	(31,054)
Total other comprehensive income, Before-tax	991,823	692,285	(491,418)
Items that will not be reclassified to profit or loss, Tax benefit (expense):
Remeasurements of defined benefit plans, Net changes, Tax benefit (expense)	(36,743)	(89,342)	29,205
Net changes in revaluation of financial assets measured at fair value through other comprehensive income, Net changes, Tax benefit (expense)	(18,274)	(25,847)	10,204
Share of other comprehensive income of investments accounted for using the equity method, Net changes, Tax benefit (expense)	(76)	(276)	185
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)	203	1	(47)
Net changes in revaluation of financial assets measured at fair value through other comprehensive income, Reclassification to profit or loss, Tax benefit (expense)	(9)	(19)	1
Net changes in revaluation of financial assets measured at fair value through other comprehensive income, Net changes, Tax benefit (expense)	194	(18)	(46)
Exchange differences on translating foreign operations, Amount incurred during the year, Tax benefit (expense)	0		(176)
Exchange differences on translating foreign operations, Reclassification to profit or loss, Tax benefit (expense)	0		176
Exchange differences on translating foreign operations, Net changes, Tax benefit (expense)	0
Share of other comprehensive income of investments accounted for using the equity method, Amount incurred during the year, Tax benefit (expense)	(1,972)	377	661
Share of other comprehensive income of investments accounted for using the equity method, Reclassification to profit or loss, Tax benefit (expense)	0
Share of other comprehensive income of investments accounted for using the equity method, Net changes, Tax benefit (expense)	(1,972)	377	661
Total other comprehensive income, Tax benefit (expense)	(56,871)	(115,106)	40,209
Items that will not be reclassified to profit or loss, Net-of-tax:
Remeasurements of defined benefit plans, Net changes, Net-of-tax	117,042	238,262	(102,983)
Net changes in revaluation of financial assets measured at fair value through other comprehensive income, Net changes, Net-of-tax	58,635	67,603	(23,361)
Share of other comprehensive income of investments accounted for using the equity method, Net changes, Net-of-tax	1,786	4,910	(1,550)
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	(712)	(106)	309
Net changes in revaluation of financial assets measured at fair value through other comprehensive income, Reclassification to profit or loss, Net-of-tax	30	63	(30)
Net changes in revaluation of financial assets measured at fair value through other comprehensive income, Net changes, Net-of-tax	(682)	(43)	279
Exchange differences on translating foreign operations, Amount incurred during the year, Net-of-tax	680,724	239,097	(292,766)
Exchange differences on translating foreign operations, Reclassification to profit or loss, Net-of-tax	0		(435)
Exchange differences on translating foreign operations, Net changes, Net-of-tax	680,724	239,097	(293,201)
Share of other comprehensive income of investments accounted for using the equity method, Amount incurred during the year, Net-of-tax	77,512	27,423	(30,393)
Share of other comprehensive income of investments accounted for using the equity method, Reclassification to profit or loss, Net-of-tax	(65)	(73)
Share of other comprehensive income of investments accounted for using the equity method, Net changes, Net-of-tax	77,447	27,350	(30,393)
Total other comprehensive income, net of tax	¥ 934,952	¥ 577,179	¥ (451,209)

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, 2022	Mar. 31, 2021	Mar. 31, 2020
Disclosure of analysis of other comprehensive income by item [line items]
Remeasurements of defined benefit plans	¥ 117,042	¥ 238,262	¥ (102,983)
Net changes in revaluation of financial assets measured at fair value through other comprehensive income	58,635	67,603	(23,361)
Exchange differences on translating foreign operations	680,724	239,097	(293,201)
Total	934,952	577,179	(451,209)
Non-controlling interests [Member]
Disclosure of analysis of other comprehensive income by item [line items]
Remeasurements of defined benefit plans	565	1,030	(753)
Net changes in revaluation of financial assets measured at fair value through other comprehensive income	(136)	25	(73)
Exchange differences on translating foreign operations	21,593	18,792	(18,924)
Total	¥ 22,022	¥ 19,847	¥ (19,750)

Equity - Dividends from Retaine

Equity - Dividends from Retained Earnings (Detail) - JPY (¥) ¥ / shares in Units, ¥ in Millions	May 31, 2022	Nov. 06, 2021	May 12, 2021	Feb. 09, 2021	Nov. 06, 2020	Aug. 05, 2020	May 12, 2020	Feb. 07, 2020	Nov. 08, 2019	Aug. 02, 2019	May 08, 2019
Dividends 1 [abstract]
Dividend payout, Total amount of dividends (millions of yen)		¥ 95,130	¥ 93,272	¥ 44,909	¥ 32,818	¥ 18,999	¥ 48,363	¥ 48,932	¥ 49,287	¥ 49,287	¥ 49,287
Dividend payout, Dividend per share (yen)		¥ 55	¥ 54	¥ 26	¥ 19	¥ 11	¥ 28	¥ 28	¥ 28	¥ 28	¥ 28
Dividend payout, Record date		Sep. 30, 2021	Mar. 31, 2021	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019
Dividend payout, Effective date		Dec. 01, 2021	Jun. 07, 2021	Mar. 08, 2021	Dec. 02, 2020	Sep. 04, 2020	Jun. 03, 2020	Mar. 04, 2020	Nov. 29, 2019	Aug. 30, 2019	Jun. 03, 2019
Dividends payable, Total amount of dividends (millions of yen)	¥ 111,256
Dividends payable, Dividend per share (yen)	¥ 65
Dividends payable, Record date	Mar. 31, 2022
Dividends payable, Effective date	Jun. 06, 2022

Sales Revenue - Additional Info

Sales Revenue - Additional Information (Detail) ¥ in Millions	12 Months Ended
	Mar. 31, 2022 JPY (¥) Segments	Mar. 31, 2021 JPY (¥) Segments	Mar. 31, 2020 JPY (¥) Segments
Receivables from contracts with customers: [abstract]
Number of reportable segments | Segments	4	4	4
Revenue recognized included in the contract liability at the beginning of the year	¥ 199,902	¥ 182,339	¥ 186,581
Amortization of assets recognised cost	¥ 39,682	¥ 33,242	¥ 35,324

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, 2022	Mar. 31, 2021	Mar. 31, 2020
Disclosure of disaggregation of revenue from contracts with customers [line items]
Total		¥ 14,552,696	¥ 13,170,519	¥ 14,931,009
External customers [member]
Disclosure of disaggregation of revenue from contracts with customers [line items]
Total		14,552,696	13,170,519	14,931,009
External customers [member] | Japan [member]
Disclosure of disaggregation of revenue from contracts with customers [line items]
Total		2,354,532	2,190,797	2,307,523
Operating segments [member]
Disclosure of disaggregation of revenue from contracts with customers [line items]
Total		14,790,927	13,415,264	15,205,564
Operating segments [member] | Motorcycle business [member]
Disclosure of disaggregation of revenue from contracts with customers [line items]
Total		2,185,253	1,787,283	2,059,335
Operating segments [member] | Automobile business [member]
Disclosure of disaggregation of revenue from contracts with customers [line items]
Total		9,360,593	8,779,349	10,194,638
Operating segments [member] | Financial services business [member]
Disclosure of disaggregation of revenue from contracts with customers [line items]
Total		2,823,323	2,506,788	2,600,937
Operating segments [member] | Life creation and other businesses [member]
Disclosure of disaggregation of revenue from contracts with customers [line items]
Total		421,758	341,844	350,654
Operating segments [member] | External customers [member]
Disclosure of disaggregation of revenue from contracts with customers [line items]
Revenue arising from contracts with customers		13,147,538	11,838,950	13,570,587
Revenue arising from the other sources	[1]	1,405,158	1,331,569	1,360,422
Total		14,552,696	13,170,519	14,931,009
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		2,183,176	1,784,912	2,049,900
Revenue arising from the other sources	[1]	2,077	2,371	9,435
Total		2,185,253	1,787,283	2,059,335
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		9,130,227	8,554,631	9,956,024
Revenue arising from the other sources	[1]	17,271	12,574	3,056
Total		9,147,498	8,567,205	9,959,080
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		1,435,298	1,178,005	1,239,613
Revenue arising from the other sources	[1]	1,385,369	1,316,289	1,347,352
Total		2,820,667	2,494,294	2,586,965
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		398,837	321,402	325,050
Revenue arising from the other sources	[1]	441	335	579
Total		399,278	321,737	325,629
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		1,668,249	1,596,971	1,757,682
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		105,022	88,128	77,241
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		1,337,860	1,321,329	1,473,552
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		146,185	128,265	130,775
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		79,182	59,249	76,114
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		6,549,838	6,052,533	7,094,537
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		230,766	197,155	203,822
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		4,877,900	4,671,998	5,648,818
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		1,289,076	1,049,739	1,108,827
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		152,096	133,641	133,070
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		600,987	500,536	556,791
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		202,254	146,948	144,392
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		319,340	290,326	359,166
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		79,393	63,262	53,233
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		3,686,238	3,227,474	3,424,384
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		1,307,915	1,147,539	1,329,352
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		2,314,425	2,032,469	2,048,588
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		37	1	11
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		63,861	47,465	46,433
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		642,226	461,436	737,193
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		337,219	205,142	295,093
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		280,702	238,509	425,900
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		¥ 24,305	¥ 17,785	¥ 16,200
[1]Revenue arising from the other sources primarily includes lease revenues recognized under IFRS 16 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, 2022	Mar. 31, 2021
Receivables from contracts with customers: [abstract]
Trade receivables	¥ 785,157	¥ 682,206
Contract liabilities:
Other current liabilities	261,049	232,580
Other noncurrent liabilities	¥ 193,845	¥ 169,684

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, 2022	Mar. 31, 2021
Disclosure of disaggregation of revenue from contracts with customers [line items]
Total	¥ 364,407	¥ 322,397
Within 1 year [member]
Disclosure of disaggregation of revenue from contracts with customers [line items]
Total	127,377	113,924
Between 1 and 5 years [member]
Disclosure of disaggregation of revenue from contracts with customers [line items]
Total	221,282	197,037
Later than 5 years [member]
Disclosure of disaggregation of revenue from contracts with customers [line items]
Total	¥ 15,748	¥ 11,436

Sales Revenue - Summary of Asse

Sales Revenue - Summary of Assets Recognized Costs Obtain a Contract With Customer (Detail) - JPY (¥) ¥ in Millions	Mar. 31, 2022	Mar. 31, 2021
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	¥ 128,864	¥ 103,887

Research and Development - Summ

Research and Development - Summary of Research and Development Costs (Detail) - JPY (¥) ¥ in Millions	12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2020
Material income and expense [abstract]
Research and development expenditures incurred during the reporting period	¥ 804,025	¥ 780,065	¥ 821,478
Amount capitalized	(159,174)	(201,889)	(192,397)
Amortization and impairment losses of capitalized development costs	142,205	160,718	175,042
Total	¥ 787,056	¥ 738,894	¥ 804,123

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, 2022	Mar. 31, 2021	Mar. 31, 2020
Interest income:
Financial assets measured at amortized cost	¥ 22,847	¥ 18,146	¥ 47,679
Financial assets measured at fair value through other comprehensive income	185	196	249
Financial assets measured at fair value through profit or loss	2,595	1,463	1,484
Total	25,627	19,805	49,412
Interest expense:
Financial liabilities measured at amortized cost	(15,706)	(12,269)	(15,624)
Other	(1,161)	(1,608)	(9,065)
Total	(16,867)	(13,877)	(24,689)
Dividends received:
Financial assets measured at fair value through other comprehensive income	4,777	3,372	5,169
Financial assets measured at fair value through profit or loss		0	25
Gains (losses) on derivatives:
Financial assets and financial liabilities measured at fair value through profit or loss	(77,789)	15,102	(19,270)
Gains (losses) on foreign exchange	68,033	(26,163)	(24,942)
Other	(7,335)	(17,128)	6,373
Total	(12,314)	(24,817)	(32,645)
Total finance income and finance costs	¥ (3,554)	¥ (18,889)	¥ (7,922)

Income Taxes - Profit Before In

Income Taxes - Profit Before Income Taxes and Income Tax Expense (Detail) - JPY (¥) ¥ in Millions	12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2020
Disclosure of income taxes [Line Items]
Profit (loss) before income taxes	¥ 1,070,190	¥ 914,053	¥ 789,918
Income tax expense (benefit):
Current taxes	287,433	181,930	244,606
Deferred taxes	22,056	36,679	35,380
Total	309,489	218,609	279,986
Japan [member]
Disclosure of income taxes [Line Items]
Profit (loss) before income taxes	(42,213)	(32,954)	(63,390)
Income tax expense (benefit):
Current taxes	9,539	7,236	11,036
Deferred taxes	(4,081)	(21,228)	17,470
Total	5,458	(13,992)	28,506
Foreign [member]
Disclosure of income taxes [Line Items]
Profit (loss) before income taxes	1,112,403	947,007	853,308
Income tax expense (benefit):
Current taxes	277,894	174,694	233,570
Deferred taxes	26,137	57,907	17,910
Total	¥ 304,031	¥ 232,601	¥ 251,480

Income Taxes - Additional Infor

Income Taxes - Additional Information (Detail) - JPY (¥) ¥ in Millions	12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2020
Disclosure of income taxes [Line Items]
Statutory income tax rate	30.20%	30.20%	30.20%
Deferred tax assets recognized by entities that have suffered a loss in either the preceding or current period	¥ 26,109	¥ 19,647
Aggregate amounts of temporary differences relating to investments in subsidiaries and interests in joint ventures for which deferred tax liabilities are not recognized	¥ 6,323,299	¥ 5,331,437
Japan [member]
Disclosure of income taxes [Line Items]
Statutory income tax rate	30.20%	30.20%	30.20%
Foreign [member] | Bottom of range [member]
Disclosure of income taxes [Line Items]
Statutory income tax rate	16%
Foreign [member] | Top of range [member]
Disclosure of income taxes [Line Items]
Statutory income tax rate	34%

Income Taxes - Reconciliation o

Income Taxes - Reconciliation of Statutory Income Tax Rate to Average Effective Tax Rate (Detail)	12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2020
Reconciliation of average effective tax rate and applicable tax rate [abstract]
Statutory income tax rate	30.20%	30.20%	30.20%
Difference in statutory income tax rates of foreign subsidiaries	(4.50%)	(5.20%)	(3.90%)
Effects of investments accounted for using the equity method	(5.70%)	(9.00%)	(6.20%)
Effects of undistributed earnings and withholding taxes on royalty	7.10%	7.80%	8.60%
Changes in unrecognized deferred tax assets	1.40%	1.20%	7.80%
Effects of income and expense not taxable and deductible for tax purpose	0%	0.30%	0.80%
Effects of tax credit	(0.90%)	(1.40%)	(3.00%)
Other adjustments relating to prior years	(0.10%)	(0.10%)	(0.70%)
Adjustments for the uncertain tax treatments on income taxes	0.90%	(0.80%)	0.20%
Adjustments for the changes in income tax laws	0.10%	0.10%	2.30%
Other	0.40%	0.80%	(0.70%)
Average effective tax rate	28.90%	23.90%	35.40%

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, 2022	Mar. 31, 2021
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Deferred tax assets		¥ 91,592	¥ 99,552
Deferred tax liabilities		990,754	842,001
Gross carrying amount [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Deferred tax assets		480,919	521,975
Deferred tax liabilities		1,380,081	1,264,424
Net deferred tax assets (liabilities)		(899,162)	(742,449)
Gross carrying amount [member] | Inventories [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Deferred tax assets		44,029	33,616
Gross carrying amount [member] | Accrued expenses [Member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Deferred tax assets		36,567	61,376
Gross carrying amount [member] | Provisions [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Deferred tax assets		100,408	89,470
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		27,592	25,534
Deferred tax liabilities		82,518	77,338
Gross carrying amount [member] | Intangible assets [Member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Deferred tax assets		12,017	11,170
Deferred tax liabilities		195,542	194,083
Gross carrying amount [member] | Retirement benefit liabilities [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Deferred tax assets		67,120	82,072
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		67,787	64,844
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		22,285	36,020
Gross carrying amount [member] | Other [Member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Deferred tax assets		103,114	117,873
Gross carrying amount [member] | Other financial assets [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Deferred tax liabilities		61,580	38,027
Gross carrying amount [member] | Operating leases [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Deferred tax liabilities		846,978	751,892
Gross carrying amount [member] | Undistributed earnings [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Deferred tax liabilities		59,650	53,173
Gross carrying amount [member] | Other [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Deferred tax liabilities	[1]	¥ 133,813	¥ 149,911
[1]The amounts of deferred tax liabilities arising from retirement benefit assets included in other as of March 31, 2021 and 2022 are ¥52,792 million and ¥68,772 million, respectively.

Income Taxes - Components by _2

Income Taxes - Components by Major Factor in Deferred Tax Assets and Deferred Tax Liabilities (Parenthetical) (Detail) - JPY (¥) ¥ in Millions	Mar. 31, 2022	Mar. 31, 2021
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Deferred tax liabilities	¥ 990,754	¥ 842,001
Retirement benefit assets [Member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Deferred tax liabilities	¥ 68,772	¥ 52,792

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, 2022	Mar. 31, 2021	Mar. 31, 2020
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		¥ 22,056	¥ 36,679	¥ 35,380
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		(9,865)	(3,920)	8,738
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		(3,491)	(10,708)	22,185
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		(3,738)	(6,955)	(3,503)
Retirement benefit liabilities(assets) [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		(4,991)	(10,353)	7,258
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		(35,308)	37,506	(3,697)
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		4,198	(2,885)	(1,059)
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		(1,608)	(7,695)	(6,378)
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		16,102	15,695	(8,423)
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	[1]	¥ 60,757	¥ 25,994	¥ 20,259
[1]The income tax expenses recognized due to the decrease of deferred tax assets arising from accrued expenses included in other as of March 31, 2022 is ¥27,321 million.

Income Taxes - Changes in Def_2

Income Taxes - Changes in Deferred Tax Assets and Deferred Tax Liabilities Recognized as Income Tax Expense in the Consolidated Statements of Income (Parenthetical) (Detail) ¥ in Millions	12 Months Ended
	Mar. 31, 2022 JPY (¥)
Changes in deferred tax liability (asset) [abstract]
Income tax expenses recognized due to decrease of deferred tax assets arising from accrued expenses	¥ 27,321

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, 2022	Mar. 31, 2021
Disclosure of temporary difference, unused tax losses and unused tax credits [abstract]
Deductible temporary differences	¥ 553,778	¥ 519,457
Carryforward of unused tax losses	693,323	514,420
Carryforward of unused tax credit	¥ 549	¥ 912

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, 2022	Mar. 31, 2021
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Unused tax losses	¥ 693,323	¥ 514,420
Within 1 year [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Unused tax losses	3,603	24,886
Between 1 and 5 years [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Unused tax losses	73,448	62,361
Between 5 and 20 years [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Unused tax losses	256,340	246,941
Indefinite periods [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Unused tax losses	¥ 359,932	¥ 180,232

Income Taxes - Components by _3

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, 2022	Mar. 31, 2021
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Unused tax credit	¥ 549	¥ 912
Within 1 year [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Unused tax credit	147	349
Between 1 and 5 years [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Unused tax credit	259	371
Between 5 and 20 years [member]
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]
Unused tax credit	143	192
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, 2022	Mar. 31, 2021	Mar. 31, 2020
Earnings per share [abstract]
Profit for the year attributable to owners of the parent	¥ 707,067	¥ 657,425	¥ 455,746
Weighted average number of common shares outstanding, basic	1,719,961,835	1,726,638,088	1,752,006,211
Basic earnings per share attributable to owners of the parent	¥ 411.09	¥ 380.75	¥ 260.13

Financial Risk Management - Add

Financial Risk Management - Additional Information (Detail) - JPY (¥)	Mar. 31, 2022	Mar. 31, 2021
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	119,168,000,000	¥ 92,751,000,000
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	¥ 7,098,000,000	¥ 8,343,000,000
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	90%	70%
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	100%	90%
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%	1%
Interest rate risk [member]
Disclosure of nature and extent of risks arising from financial instruments [line items]
Sensitivity analysis, percentage	1%	1%

Financial Risk Management - For

Financial Risk Management - Foreign Currency Exchange Rate Risk Sensitivity Analysis (Detail) - JPY (¥) ¥ in Millions	Mar. 31, 2022	Mar. 31, 2021
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	¥ (1,780)	¥ (1,097)

Financial Risk Management - Int

Financial Risk Management - Interest Rate Risk Sensitivity Analysis (Detail) - JPY (¥) ¥ in Millions	Mar. 31, 2022	Mar. 31, 2021
Interest rate risk [member]
Disclosure of nature and extent of risks arising from financial instruments [line items]
Impact on profit before income taxes	¥ (25,830)	¥ (18,354)

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, 2022	Mar. 31, 2021
Disclosure of financial assets that are either past due or impaired [line items]
Receivables from financial services		¥ 5,434,496	¥ 5,414,550
Retail [member]
Disclosure of financial assets that are either past due or impaired [line items]
Receivables from financial services	[1]	5,054,428	4,847,906
Wholesale [member]
Disclosure of financial assets that are either past due or impaired [line items]
Receivables from financial services		284,506	486,138
Financial assets past due [member]
Disclosure of financial assets that are either past due or impaired [line items]
Receivables from financial services		276,982	233,560
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		214,522	191,342
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		43,138	28,720
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		11,463	7,107
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		7,859	6,391
Financial assets past due [member] | Retail [member]
Disclosure of financial assets that are either past due or impaired [line items]
Receivables from financial services		266,676	215,383
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		204,661	174,464
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		43,051	27,923
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		11,452	7,058
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		7,512	5,938
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		582	484
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		200	71
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		51	18
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		7	21
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		324	374
Financial assets past due [member] | Wholesale [member]
Disclosure of financial assets that are either past due or impaired [line items]
Receivables from financial services		9,724	17,693
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		9,661	16,807
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		36	779
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		4	28
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		¥ 23	¥ 79
[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, 2022	Mar. 31, 2021
Disclosure Of Finance Receivables [Line Items]
Consumer finance receivables		¥ 5,434,496	¥ 5,414,550
Retail [member]
Disclosure Of Finance Receivables [Line Items]
Consumer finance receivables	[1]	5,054,428	4,847,906
12-month expected credit losses [member] | Retail [member]
Disclosure Of Finance Receivables [Line Items]
Consumer finance receivables	[1]	4,897,471	4,563,496
Not credit impaired [member] | Lifetime expected credit losses [member] | Retail [member]
Disclosure Of Finance Receivables [Line Items]
Consumer finance receivables	[1]	139,306	271,762
Credit impaired [member] | Lifetime expected credit losses [member] | Retail [member]
Disclosure Of Finance Receivables [Line Items]
Consumer finance receivables	[1]	¥ 17,651	¥ 12,648
[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, 2022	Mar. 31, 2021
Dealer finance receivables:
Dealer finance receivables	¥ 5,434,496	¥ 5,414,550
Loan commitments:
Loan commitments	119,168	92,751
Group A [member]
Dealer finance receivables:
Dealer finance receivables	190,306	255,735
Loan commitments:
Loan commitments	95,485	68,050
Group B [member]
Dealer finance receivables:
Dealer finance receivables	94,200	230,403
Loan commitments:
Loan commitments	23,683	24,701
Wholesale [member]
Dealer finance receivables:
Dealer finance receivables	284,506	486,138
12-month expected credit losses [member]
Loan commitments:
Loan commitments	119,168	92,751
12-month expected credit losses [member] | Group A [member]
Dealer finance receivables:
Dealer finance receivables	188,101	247,487
Loan commitments:
Loan commitments	95,485	68,050
12-month expected credit losses [member] | Group B [member]
Dealer finance receivables:
Dealer finance receivables	91,995	225,651
Loan commitments:
Loan commitments	23,683	24,701
12-month expected credit losses [member] | Wholesale [member]
Dealer finance receivables:
Dealer finance receivables	280,096	473,138
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	88	6,345
Loan commitments:
Loan commitments
Lifetime expected credit losses [member] | Not credit impaired [member] | Group B [member]
Dealer finance receivables:
Dealer finance receivables	2,133	4,562
Loan commitments:
Loan commitments
Lifetime expected credit losses [member] | Not credit impaired [member] | Wholesale [member]
Dealer finance receivables:
Dealer finance receivables	2,221	10,907
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	2,117	1,903
Loan commitments:
Loan commitments
Lifetime expected credit losses [member] | Credit impaired [member] | Group B [member]
Dealer finance receivables:
Dealer finance receivables	72	190
Loan commitments:
Loan commitments
Lifetime expected credit losses [member] | Credit impaired [member] | Wholesale [member]
Dealer finance receivables:
Dealer finance receivables	¥ 2,189	¥ 2,093

Financial Risk Management - Unu

Financial Risk Management - Unused Portions of the Credit Facility (Detail) - JPY (¥) ¥ in Millions	Mar. 31, 2022	Mar. 31, 2021
Commercial paper [member]
Disclosure of unused portion of borrowing facility [line items]
Unused portions of the credit facility	¥ 1,190,631	¥ 760,677
Medium-term notes [member]
Disclosure of unused portion of borrowing facility [line items]
Unused portions of the credit facility	1,291,612	1,976,173
Credit facility [member]
Disclosure of unused portion of borrowing facility [line items]
Unused portions of the credit facility	¥ 2,482,243	¥ 2,736,850

Financial Risk Management - U_2

Financial Risk Management - Unused Portions of the Committed Lines of Credit (Detail) - JPY (¥) ¥ in Millions	Mar. 31, 2022	Mar. 31, 2021
Commercial paper programs [member]
Disclosure of unused portion of borrowing facility [line items]
Unused portions of the committed lines of credit	¥ 1,226,138	¥ 1,122,892
Other committed lines of credit [member]
Disclosure of unused portion of borrowing facility [line items]
Unused portions of the committed lines of credit	67,976	65,472
Committed lines of credit [member]
Disclosure of unused portion of borrowing facility [line items]
Unused portions of the committed lines of credit	¥ 1,294,114	¥ 1,188,364

Financial Risk Management - Non

Financial Risk Management - Non-derivative Financial Liabilities by Maturity (Detail) - JPY (¥) ¥ in Millions	Mar. 31, 2022	Mar. 31, 2021
Disclosure of maturity analysis for non-derivative financial liabilities [line items]
Trade payables, carrying amount	¥ 1,236,233	¥ 1,088,061
Financing liabilities, carrying amount	8,102,556	7,720,985
Accrued expenses, carrying amount	375,601	415,106
Other financial liabilities, carrying amount	367,041	380,698
Non-derivative financial liabilities, carrying amount	10,081,431	9,604,850
Trade payables, contractual cash flows	1,236,233	1,088,061
Financing liabilities, contractual cash flows	8,391,545	7,837,560
Accrued expenses, contractual cash flows	375,601	415,106
Other financial liabilities, contractual cash flows	394,420	409,408
Non-derivative financial liabilities, contractual cash flows	10,397,799	9,750,135
Within 1 year [member]
Disclosure of maturity analysis for non-derivative financial liabilities [line items]
Trade payables, contractual cash flows	1,236,233	1,088,061
Financing liabilities, contractual cash flows	3,218,988	3,083,901
Accrued expenses, contractual cash flows	375,601	415,106
Other financial liabilities, contractual cash flows	93,054	101,142
Non-derivative financial liabilities, contractual cash flows	4,923,876	4,688,210
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	4,407,350	4,230,223
Accrued expenses, contractual cash flows
Other financial liabilities, contractual cash flows	94,837	86,972
Non-derivative financial liabilities, contractual cash flows	4,502,187	4,317,195
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	765,207	523,436
Accrued expenses, contractual cash flows
Other financial liabilities, contractual cash flows	206,529	221,294
Non-derivative financial liabilities, contractual cash flows	¥ 971,736	¥ 744,730

Financial Risk Management - S_2

Financial Risk Management - Summary of Lease liabilities by maturity (Detail) - JPY (¥) ¥ in Millions	Mar. 31, 2022	Mar. 31, 2021
Disclosure Of Lease Liabilities By Maturity [Line Items]
Lease liabilities	¥ 318,758	¥ 317,429
Total contractual cash flows	346,136	346,137
Within 1 year [member]
Disclosure Of Lease Liabilities By Maturity [Line Items]
Total contractual cash flows	71,510	61,053
Between 1 and 5 years [member]
Disclosure Of Lease Liabilities By Maturity [Line Items]
Total contractual cash flows	86,305	79,836
Later than 5 years [member]
Disclosure Of Lease Liabilities By Maturity [Line Items]
Total contractual cash flows	¥ 188,321	¥ 205,248

Financial Risk Management - Der

Financial Risk Management - Derivative Financial Liabilities by Maturity (Detail) - JPY (¥) ¥ in Millions	Mar. 31, 2022	Mar. 31, 2021
Disclosure of maturity analysis for derivative financial liabilities [line items]
Derivative financial liabilities, contractual cash flows	¥ 185,249	¥ 82,221
Within 1 year [member]
Disclosure of maturity analysis for derivative financial liabilities [line items]
Derivative financial liabilities, contractual cash flows	53,895	44,334
Between 1 and 5 years [member]
Disclosure of maturity analysis for derivative financial liabilities [line items]
Derivative financial liabilities, contractual cash flows	106,214	30,218
Later than 5 years [member]
Disclosure of maturity analysis for derivative financial liabilities [line items]
Derivative financial liabilities, contractual cash flows	¥ 25,140	¥ 7,669

Fair Value - Additional Informa

Fair Value - Additional Information (Detail) - JPY (¥)	12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Disclosure of fair value measurement of assets [abstract]
Percentage of auction rate securities guaranteed by government	95%
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, 2022	Mar. 31, 2021	Mar. 31, 2020
Disclosures of fair value of financial assets and financial liabilities at amortized cost [Line items]
Other financial assets	¥ 1,037,397	¥ 923,840
Other financial liabilities	518,983	462,954
Debt securities [member]
Disclosures of fair value of financial assets and financial liabilities at amortized cost [Line items]
Other financial assets	79,176	173,302
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	725,356	531,640
Other financial liabilities	151,942	82,256
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	66,644	17,343
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	83,669	64,913
Measured at fair value on a recurring basis [member] | Financial liabilities measured at fair value through profit or loss [member] | Other [member]
Disclosures of fair value of financial assets and financial liabilities at amortized cost [Line items]
Other financial liabilities	1,629
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	151,942	82,256
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	15,674	43,782
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	114,016	60,367
Measured at fair value on a recurring basis [member] | Financial assets measured at fair value through profit or loss [member] | Other [member]
Disclosures of fair value of financial assets and financial liabilities at amortized cost [Line items]
Other financial assets	4,648	4,829
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	134,338	108,978
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	102,251	68,323
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	19,984	10,134
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	468,783	344,205
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	378,582	260,725
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] | Other [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] | Other [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	42,837	26,570
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	335,745	234,155
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	204,315	150,722
Other financial liabilities	151,942	82,256
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	66,644	17,343
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	83,669	64,913
Measured at fair value on a recurring basis [member] | Level 2 [member] | Financial liabilities measured at fair value through profit or loss [member] | Other [member]
Disclosures of fair value of financial assets and financial liabilities at amortized cost [Line items]
Other financial liabilities	1,629
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	151,942	82,256
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	15,674	43,782
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	114,016	60,367
Measured at fair value on a recurring basis [member] | Level 2 [member] | Financial assets measured at fair value through profit or loss [member] | Other [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 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	129,690	104,149
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	54,641	36,439
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	19,984	10,134
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	142,459	120,193
Other financial liabilities
Measured at fair value on a recurring basis [member] | Level 3 [member] | Derivatives [member]
Disclosures of fair value of financial assets and financial liabilities at amortized cost [Line items]
Other financial assets	4,648	4,829
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	4,773	5,314	5,224
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	133,038	110,050	¥ 99,508
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] | Other [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] | Other [member]
Disclosures of fair value of financial assets and financial liabilities at amortized cost [Line items]
Other financial assets	4,648	4,829
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	4,648	4,829
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	4,773	5,314
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	¥ 133,038	¥ 110,050

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, 2022	Mar. 31, 2021
Disclosure of fair value measurement of assets [line items]
Beginning balance	¥ 923,840
Ending balance	1,037,397	¥ 923,840
Debt securities [member]
Disclosure of fair value measurement of assets [line items]
Beginning balance	173,302
Ending balance	79,176	173,302
Measured at fair value on a recurring basis [member]
Disclosure of fair value measurement of assets [line items]
Beginning balance	531,640
Ending balance	725,356	531,640
Measured at fair value on a recurring basis [member] | Level 3 [member]
Disclosure of fair value measurement of assets [line items]
Beginning balance	120,193
Ending balance	142,459	120,193
Measured at fair value on a recurring basis [member] | Level 3 [member] | Derivatives [member]
Disclosure of fair value measurement of assets [line items]
Beginning balance	4,829
Profit or loss	(674)	4,665
Other comprehensive income
Purchases
Sales
Transfer to level 1 due to listing
Exchange differences on translating foreign operations	493	164
Ending balance	4,648	4,829
Unrealized gains or losses included in profit or loss on assets	(674)	4,665
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	5,314	5,224
Profit or loss	112	(43)
Other comprehensive income
Purchases
Sales	(1,124)
Transfer to level 1 due to listing
Exchange differences on translating foreign operations	471	133
Ending balance	4,773	5,314
Unrealized gains or losses included in profit or loss on assets	112	(43)
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	110,050	99,508
Profit or loss
Other comprehensive income	17,973	3,748
Purchases	7,075	7,701
Sales	(1,487)	(1,243)
Transfer to level 1 due to listing	(1,158)
Exchange differences on translating foreign operations	585	336
Ending balance	133,038	110,050
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, 2022	Mar. 31, 2021
Disclosures of fair value of financial assets and financial liabilities at amortized cost [Line items]
Receivables from financial services	¥ 5,434,496	¥ 5,414,550
Debt securities	1,037,397	923,840
Financing liabilities	8,102,556	7,720,985
Debt securities [member]
Disclosures of fair value of financial assets and financial liabilities at amortized cost [Line items]
Debt securities	79,176	173,302
Fair value [member]
Disclosures of fair value of financial assets and financial liabilities at amortized cost [Line items]
Receivables from financial services	5,374,754	5,488,065
Financing liabilities	7,984,057	7,809,379
Fair value [member] | Debt securities [member]
Disclosures of fair value of financial assets and financial liabilities at amortized cost [Line items]
Debt securities	¥ 79,176	¥ 173,302

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, 2022	Mar. 31, 2021
Disclosure of detailed information about financial instruments [line items]
Gross amounts of recognized financial assets	¥ 134,338	¥ 108,978
Amounts offset in the consolidated statements of financial position, financial assets
Net amounts presented in the consolidated statements of financial position, financial assets	134,338	108,978
Amounts not offset due to not meeting offsetting criteria despite being subject to a master netting agreement or similar agreement, financial assets	(98,419)	(65,430)
Net Amounts, financial assets	35,919	43,548
Gross amounts of recognized financial liabilities	151,942	82,256
Amounts offset in the consolidated statements of financial position, financial liabilities
Net amounts presented in the consolidated statements of financial position, financial liabilities	151,942	82,256
Amounts not offset due to not meeting offsetting criteria despite being subject to a master netting agreement or similar agreement, financial liabilities	(98,419)	(65,430)
Net Amounts, financial liabilities	¥ 53,523	¥ 16,826

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, 2022	Mar. 31, 2021
Disclosure of contingent liabilities [abstract]
Commitments for purchases of property, plant and equipment and other commitments	¥ 60,527	¥ 55,571

Related Parties - Balances of R

Related Parties - Balances of Receivables and Payables with Affiliates and Joint Ventures (Detail) - JPY (¥) ¥ in Millions	Mar. 31, 2022	Mar. 31, 2021
Disclosure of transactions between related parties [line items]
Receivables	¥ 380,687	¥ 322,199
Payables	184,085	158,205
Affiliates [member]
Disclosure of transactions between related parties [line items]
Receivables	34,317	29,067
Payables	147,705	127,793
Joint ventures [member]
Disclosure of transactions between related parties [line items]
Receivables	346,370	293,132
Payables	¥ 36,380	¥ 30,412

Related Parties - Amount of Tra

Related Parties - Amount of Transactions with Affiliates and Joint Ventures (Detail) - JPY (¥) ¥ in Millions	12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2020
Disclosure of transactions between related parties [line items]
Sales revenue	¥ 1,146,557	¥ 1,073,662	¥ 832,511
Purchase	1,370,387	1,166,044	1,408,199
Affiliates [member]
Disclosure of transactions between related parties [line items]
Sales revenue	93,187	87,742	109,615
Purchase	1,176,066	1,015,921	1,241,314
Joint ventures [member]
Disclosure of transactions between related parties [line items]
Sales revenue	1,053,370	985,920	722,896
Purchase	¥ 194,321	¥ 150,123	¥ 166,885

Related Parties - Compensation

Related Parties - Compensation Paid to Directors (Detail) - JPY (¥) ¥ in Millions	12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2020
Related party transactions [abstract]
Remuneration	¥ 696	¥ 683	¥ 691
STI (Short Term Incentive)	188	95	101
LTI (Long Term Incentive)	159	129	140
Total	¥ 1,043	¥ 907	¥ 932

Related Parties - Major Consoli

Related Parties - Major Consolidated Subsidiaries (Detail)	12 Months Ended
	Mar. 31, 2022
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%
Percentage Voting Interest	100%
Honda Finance Co., Ltd. [member]
Disclosure of subsidiaries [line items]
Company	Honda Finance Co., Ltd.
Country of Incorporation	Japan
Function	Finance
Percentage Ownership	100%
Percentage Voting Interest	100%
American Honda Motor Co., Inc. [member]
Disclosure of subsidiaries [line items]
Company	American Honda Motor Co., Inc.
Country of Incorporation	U.S.A.
Function	Coordination of Subsidiaries Operation, Research & Development, Manufacturing and Sales
Percentage Ownership	100%
Percentage Voting Interest	100%
Honda Aero., Inc. [member]
Disclosure of subsidiaries [line items]
Company	Honda Aero., Inc.
Country of Incorporation	U.S.A.
Function	Research & Development and Manufacturing
Percentage Ownership	100%
Percentage Voting Interest	100%
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%
Percentage Voting Interest	100%
Honda Development and Manufacturing of America, LLC [member]
Disclosure of subsidiaries [line items]
Company	Honda Development and Manufacturing of America, LLC
Country of Incorporation	U.S.A.
Function	Research & Development and Manufacturing
Percentage Ownership	100%
Percentage Voting Interest	100%
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%
Percentage Voting Interest	100%
Honda Canada Inc. [member]
Disclosure of subsidiaries [line items]
Company	Honda Canada Inc.
Country of Incorporation	Canada
Function	Manufacturing and Sales
Percentage Ownership	100%
Percentage Voting Interest	100%
Honda Canada Finance Inc. [member]
Disclosure of subsidiaries [line items]
Company	Honda Canada Finance Inc.
Country of Incorporation	Canada
Function	Finance
Percentage Ownership	100%
Percentage Voting Interest	100%
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%
Percentage Voting Interest	100%
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%
Percentage Voting Interest	100%
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%
Percentage Voting Interest	100%
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%
Percentage Voting Interest	100%
Honda Bank GmbH [member]
Disclosure of subsidiaries [line items]
Company	Honda Bank GmbH
Country of Incorporation	Germany
Function	Finance
Percentage Ownership	100%
Percentage Voting Interest	100%
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%
Percentage Voting Interest	100%
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%
Percentage Voting Interest	100%
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%
Percentage Voting Interest	100%
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%
Percentage Voting Interest	100%
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%
Percentage Voting Interest	100%
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%
Percentage Voting Interest	100%
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%
Percentage Voting Interest	51%
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%
Percentage Voting Interest	51%
Honda Philippines Inc [Member]
Disclosure of subsidiaries [line items]
Company	Honda Philippines Inc.
Country of Incorporation	Philippines
Function	Manufacturing and Sales
Percentage Ownership	99.60%
Percentage Voting Interest	99.60%
Honda Taiwan Co., Ltd. [member]
Disclosure of subsidiaries [line items]
Company	Honda Taiwan Co., Ltd.
Country of Incorporation	Taiwan
Function	Sales
Percentage Ownership	100%
Percentage Voting Interest	100%
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%
Percentage Voting Interest	100%
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%
Percentage Voting Interest	100%
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%
Percentage Voting Interest	89%
Thai Honda Manufacturing Co., Ltd. [member]
Disclosure of subsidiaries [line items]
Company	Thai Honda Manufacturing Co., Ltd.
Country of Incorporation	Thailand
Function	Manufacturing and Sales
Percentage Ownership	72.50%
Percentage Voting Interest	72.50%
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%
Percentage Voting Interest	70%
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%
Percentage Voting Interest	100%
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%
Percentage Voting Interest	100%
Banco Honda S.A. [member]
Disclosure of subsidiaries [line items]
Company	Banco Honda S.A.
Country of Incorporation	Brazil
Function	Finance
Percentage Ownership	100%
Percentage Voting Interest	100%
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%
Percentage Voting Interest	100%
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%
Percentage Voting Interest	100%