Canon (CAJPY) 20-F 30 Mar 22 2021 FY Annual report (foreign) Financial data

Cover

Cover	12 Months Ended
	Dec. 31, 2021shares
Document Type	20-F
Document Registration Statement	false
Document Annual Report	true
Document Transition Report	false
Document Shell Company Report	false
Amendment Flag	false
Document Period End Date	Dec. 31, 2021
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	FY
Entity Registrant Name	CANON INC
Entity Central Index Key	0000016988
Current Fiscal Year End Date	--12-31
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Shell Company	false
Entity Filer Category	Large Accelerated Filer
Entity Emerging Growth Company	false
Document Accounting Standard	U.S. GAAP
ICFR Auditor Attestation Flag	true
Entity Incorporation, State or Country Code	M0
Entity File Number	001-15122
Entity Address, Address Line One	30-2, Shimomaruko 3-chome
Entity Address, City or Town	Ohta-ku
Entity Address, Country	JP
Entity Address, Postal Zip Code	146-8501
Auditor Name	Deloitte Touche Tohmatsu LLC
Auditor Firm ID	1044
Auditor Location	Tokyo, Japan
Ernst Young Shin Nihon LLC [Member]
Auditor Name	Ernst & Young ShinNihon LLC
Auditor Firm ID	789
Auditor Location	Tokyo, Japan
Business Contact
Entity Address, Address Line One	30-2, Shimomaruko 3-chome
Entity Address, City or Town	Ohta-ku
Entity Address, Country	JP
Entity Address, Postal Zip Code	146-8501
Contact Personnel Name	Sachiho Tanino
City Area Code	81-3
Local Phone Number	3758-2111
Common stock
Title of 12(b) Security	Common Stock (the “shares”)
Entity Common Stock, Shares Outstanding	1,045,771,759
No Trading Symbol Flag	true
American Depositary Shares
Trading Symbol	CAJ
Security Exchange Name	NYSE
Title of 12(b) Security	American Depositary Shares (“ADSs”), each of which represents one share
Entity Common Stock, Shares Outstanding	19,101,237

Consolidated Balance Sheets

Consolidated Balance Sheets - JPY (¥) ¥ in Millions	Dec. 31, 2021	Dec. 31, 2020
Current assets:
Cash and cash equivalents (Note 1)	¥ 401,395	¥ 407,684
Short-term investments (Note 2)	3,377	71
Trade receivables (Note 3)	522,432	546,771
Inventories (Note 4)	650,568	562,807
Prepaid expenses and other current assets (Notes 6, 15 and 18)	314,489	284,556
Allowance for credit losses (Notes 3 and 6)	(13,916)	(12,746)
Total current assets	1,878,345	1,789,143
Noncurrent receivables (Note 20)	16,388	17,276
Investments (Notes 2 and 22)	60,967	49,994
Property, plant and equipment, net (Notes 5 and 6)	1,041,403	1,037,680
Operating lease right-of-use assets (Note 19)	95,791	107,361
Intangible assets, net (Notes 7 and 8)	301,793	318,497
Goodwill (Notes 7 and 8)	953,850	915,564
Other assets (Notes 6, 11 and 12)	404,720	392,066
Allowance for credit losses (Note 6)	(2,369)	(1,967)
Total assets	4,750,888	4,625,614
Current liabilities:
Short-term loans and current portion of long-term debt (Notes 1 and 9)	44,891	392,235
Short Term Loans Related To Financial Services	42,300	45,000
Other short-term loans and current portion of long-term debt	2,591	347,235
Trade payables (Note 10)	338,604	303,809
Accrued income taxes (Note 12)	43,081	18,761
Accrued expenses (Notes 11 and 20)	323,929	317,716
Current operating lease liabilities (Note 19)	30,945	32,307
Other current liabilities (Notes 5, 15 and 18)	279,383	261,361
Total current liabilities	1,060,833	1,326,189
Long-term debt, excluding current installments (Notes 9 and 21)	179,750	4,834
Accrued pension and severance cost (Note 11)	248,467	345,897
Noncurrent operating lease liabilities (Note 19)	65,385	76,796
Other noncurrent liabilities (Notes 12 and 15)	98,024	87,857
Total liabilities	1,652,459	1,841,573
Canon Inc. shareholders' equity:
Common stock Authorized 3,000,000,000 shares; issued 1,333,763,464 shares in 2021 and 2020	174,762	174,762
Additional paid-in capital (Note 13)	403,119	404,620
Legal reserve (Note 13)	68,015	69,436
Retained earnings (Note 13)	3,538,037	3,409,371
Accumulated other comprehensive income (loss) (Note 14)	(151,794)	(324,789)
Treasury stock, at cost; 287,991,705 shares in 2021 and 287,989,819 shares in 2020	(1,158,366)	(1,158,369)
Total Canon Inc. shareholders' equity	2,873,773	2,575,031
Noncontrolling interests	224,656	209,010
Total equity	3,098,429	2,784,041
Total liabilities and equity	¥ 4,750,888	¥ 4,625,614

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - shares	Dec. 31, 2021	Dec. 31, 2020
Statement of Financial Position [Abstract]
Common stock, shares authorized	3,000,000,000	1,333,763,464
Common stock, shares issued	3,000,000,000	1,333,763,464
Treasury stock, shares	287,991,705	287,989,819

Consolidated Statements of Inco

Consolidated Statements of Income - JPY (¥) ¥ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Net sales (Notes 6,15 and 18)	¥ 3,513,357	¥ 3,160,243	¥ 3,593,299
Cost of sales (Notes 5, 8, 11 and 19)	1,885,565	1,784,375	1,983,266
Gross profit	1,627,792	1,375,868	1,610,033
Operating expenses (Notes 1, 5, 8, 11, 16, 19 and 20 ):
Selling, general and administrative expenses	1,058,536	993,009	1,137,110
Research and development expenses	287,338	272,312	298,503
Operating expenses	1,345,874	1,265,321	1,435,613
Operating profit	281,918	110,547	174,420
Other income (deductions):
Interest and dividend income	2,232	2,923	5,526
Interest expense	(647)	(854)	(1,038)
Other, net (Notes 1, 2, 7, 11, 14 and 18)	19,203	17,664	16,585
Other income (deductions)	20,788	19,733	21,073
Income before income taxes	302,706	130,280	195,493
Income taxes (Note 12)	71,866	34,337	56,146
Consolidated net income	230,840	95,943	139,347
Less: Net income attributable to noncontrolling interests	16,122	12,625	14,383
Net income attributable to Canon Inc.	¥ 214,718	¥ 83,318	¥ 124,964
Net income attributable to Canon Inc. shareholders per share (Note 17):
Basic	¥ 205.35	¥ 79.37	¥ 116.79
Diluted	¥ 205.29	¥ 79.35	¥ 116.77
Products And Equipment
Net sales (Notes 6,15 and 18)	¥ 2,804,680	¥ 2,489,829	¥ 2,835,428
Cost of sales (Notes 5, 8, 11 and 19)	1,552,766	1,463,637	1,627,858
Services
Net sales (Notes 6,15 and 18)	708,677	670,414	757,871
Cost of sales (Notes 5, 8, 11 and 19)	¥ 332,799	¥ 320,738	¥ 355,408

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income - JPY (¥) ¥ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Statement of Comprehensive Income [Abstract]
Consolidated net income	¥ 230,840	¥ 95,943	¥ 139,347
Other comprehensive income (loss), net of tax (Note 14):
Foreign currency translation adjustments	120,439	(17,354)	(32,157)
Net gains and losses on derivative instruments	(972)	970	(1,068)
Pension liability adjustments	56,508	1,382	(3,630)
Net change during the period	175,975	(15,002)	(36,855)
Comprehensive income (loss)	406,815	80,941	102,492
Less: Comprehensive income attributable to noncontrolling interests	19,102	13,961	16,353
Comprehensive income (loss) attributable to Canon Inc.	¥ 387,713	¥ 66,980	¥ 86,139

Consolidated Statements of Equi

Consolidated Statements of Equity - JPY (¥) ¥ in Millions	Total	Cumulative effects of accounting standard update - adoption of ASU	Common stock	Additional paid-in capital	Legal reserve	Other Retained earnings	Other Retained earningsCumulative effects of accounting standard update - adoption of ASU	Total Retained Earnings	Total Retained EarningsCumulative effects of accounting standard update - adoption of ASU	Accumulated other comprehensive income (loss)	Accumulated other comprehensive income (loss)Cumulative effects of accounting standard update - adoption of ASU	Treasury stock	Total Canon Inc. shareholders' equity	Total Canon Inc. shareholders' equityCumulative effects of accounting standard update - adoption of ASU	Non- controlling interests	Non- controlling interestsCumulative effects of accounting standard update - adoption of ASU
Balance at beginning of year at Dec. 31, 2018	¥ 3,010,145		¥ 174,762	¥ 404,389	¥ 67,116	¥ 3,501,950		¥ 3,569,066		¥ (269,071)		¥ (1,058,502)	¥ 2,820,644		¥ 189,501
Equity transactions with noncontrolling interests and other	(1,596)			641						(424)			217		(1,813)
Dividends to Canon Inc. shareholders	(171,487)					(171,487)		(171,487)					(171,487)
Dividends to noncontrolling interests	(5,557)														(5,557)
Transfers to legal reserve					456	(456)
Comprehensive income:
Net income	139,347					124,964		124,964					124,964		14,383
Other comprehensive income (loss), net of tax (Note 14):
Foreign currency translation adjustments	(32,157)									(32,043)			(32,043)		(114)
Net gains and losses on derivative instruments	(1,068)									(1,073)			(1,073)		5
Pension liability adjustments	(3,630)									(5,709)			(5,709)		2,079
Comprehensive income (loss)	102,492												86,139		16,353
Repurchases and reissuance of treasury stock	(50,017)			(13)		(10)		(10)				(49,994)	(50,017)
Balance at end of year at Dec. 31, 2019	2,883,980		174,762	405,017	67,572	3,455,083		3,522,655		(308,442)		(1,108,496)	2,685,496		198,484
Balance at end of year (ASU 2017-12) at Dec. 31, 2019							¥ 122		¥ 122		¥ (122)
Equity transactions with noncontrolling interests and other	751			(316)						(9)		(15)	(340)		1,091
Dividends to Canon Inc. shareholders	(126,938)					(126,938)		(126,938)					(126,938)
Dividends to noncontrolling interests	(4,526)														(4,526)
Transfers to legal reserve					1,864	(1,864)
Comprehensive income:
Net income	95,943					83,318		83,318					83,318		12,625
Other comprehensive income (loss), net of tax (Note 14):
Foreign currency translation adjustments	(17,354)									(17,355)			(17,355)		1
Net gains and losses on derivative instruments	970									987			987		(17)
Pension liability adjustments	1,382									30			30		1,352
Comprehensive income (loss)	80,941												66,980		13,961
Repurchases and reissuance of treasury stock	(50,008)			(81)		(69)		(69)				(49,858)	(50,008)
Balance at end of year at Dec. 31, 2020	2,784,041		174,762	404,620	69,436	3,409,371		3,478,807		(324,789)		(1,158,369)	2,575,031		209,010
Balance at end of year (ASU 2016-13) at Dec. 31, 2020		¥ (159)					¥ (159)		¥ (159)					¥ (159)
Equity transactions with noncontrolling interests and other	1,663			(62)									(62)		1,725
Dividends to Canon Inc. shareholders	(88,891)					(88,891)		(88,891)					(88,891)
Dividends to noncontrolling interests	(5,181)														(5,181)
Transfers to legal reserve				(1,429)	(1,421)	2,850		1,429
Comprehensive income:
Net income	230,840					214,718		214,718					214,718		16,122
Other comprehensive income (loss), net of tax (Note 14):
Foreign currency translation adjustments	120,439									119,165			119,165		1,274
Net gains and losses on derivative instruments	(972)									(994)			(994)		22
Pension liability adjustments	56,508									54,824			54,824		1,684
Comprehensive income (loss)	406,815												387,713		19,102
Repurchases and reissuance of treasury stock	(18)			(10)		(11)		(11)				3	(18)
Balance at end of year at Dec. 31, 2021	¥ 3,098,429		¥ 174,762	¥ 403,119	¥ 68,015	¥ 3,538,037		¥ 3,606,052		¥ (151,794)		¥ (1,158,366)	¥ 2,873,773		¥ 224,656

Consolidated Statements of Eq_2

Consolidated Statements of Equity (Parenthetical) - ¥ / shares	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2019	Dec. 31, 2018
Statement of Stockholders' Equity [Abstract]
Dividends common stock per share	¥ 85	¥ 120	¥ 160

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - JPY (¥) ¥ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Cash flows from operating activities:
Consolidated net income	¥ 230,840	¥ 95,943	¥ 139,347
Adjustments to reconcile consolidated net income to net cash provided by operating activities:
Depreciation and amortization	221,246	227,825	237,327
Loss on disposal of fixed assets	7,745	4,326	5,991
Deferred income taxes	(9,826)	(15,542)	(6,523)
Decrease in trade receivables	44,678	15,120	43,504
(Increase) decrease in inventories	(61,017)	16,075	19,895
Increase (decrease) in trade payables	52,138	(4,636)	(35,509)
Increase (decrease) in accrued income taxes	24,017	43	(22,279)
(Decrease) increase in accrued expenses	(8,673)	(16,413)	9,738
Decrease in accrued pension and severance cost	(41,477)	(16,601)	(13,722)
Other, net (Note 6)	(8,643)	27,665	(19,308)
Net cash provided by operating activities	451,028	333,805	358,461
Cash flows from investing activities:
Purchases of fixed assets (Note 5)	(177,350)	(164,719)	(215,671)
Proceeds from sale of fixed assets (Note 5)	3,796	7,815	885
Purchases of held to maturity securities	(2,216)
Purchases of securities	(2,162)	(592)	(4,907)
Proceeds from sale and maturity of securities	1,714	558	828
Acquisitions of businesses, net of cash acquired (Note 7)	(31,751)	(127)	(8,880)
Other, net	713	1,626	(823)
Net cash used in investing activities	(207,256)	(155,439)	(228,568)
Cash flows from financing activities:
Proceeds from issuance of long-term debt (Note 9)	175,100	2,100
Repayments of long-term debt (Note 9)	(347,029)	(11,095)	(8,678)
(Decrease) increase in short-term loans related to financial services, net (Note 9)	(2,700)	5,100	5,200
Dividends paid	(88,891)	(126,938)	(171,487)
Repurchases and reissuance of treasury stock	(17)	(50,008)	(50,012)
Other, net	(3,829)	(2,608)	(7,613)
Net cash used in financing activities	(267,366)	(183,449)	(232,590)
Effect of exchange rate changes on cash and cash equivalents	17,305	(47)	(5,134)
Net change in cash and cash equivalents	(6,289)	(5,130)	(107,831)
Cash and cash equivalents at beginning of year	407,684	412,814	520,645
Cash and cash equivalents at end of year	401,395	407,684	412,814
Supplemental disclosure for cash flow information, Cash paid during the year for:
Interest	599	1,028	888
Income taxes	¥ 71,573	¥ 45,471	¥ 77,654

Basis of Presentation and Signi

Basis of Presentation and Significant Accounting Policies	12 Months Ended
	Dec. 31, 2021
Accounting Policies [Abstract]
Basis of Presentation and Significant Accounting Policies	1. Basis of Presentation and Significant Accounting Policies (a) Description of Business Canon Inc. (the “Company”) and its subsidiaries (collectively “Canon”) is one of the world’s leading manufacturers of office multi-function devices (“MFDs”), laser printers, inkjet printers, cameras, medical equipment and lithography equipment. Products of the Printing Business Unit consist mainly of office MFDs, document solutions, laser multifunction printers (“MFPs”), laser printers, inkjet printers, image scanners, calculators, digital continuous feed presses, digital sheet-fed X-ray Canon sells laser printers on an OEM basis to HP Inc.; such sales constituted 11.6%, 11.4% and 13.0% of consolidated net sales for the years ended December 31, 2021, 2020 and 2019, respectively, and are included in the Printing Business Unit. Canon’s manufacturing operations are conducted primarily at 29 plants in Japan and 13 overseas plants which are located in countries and regions such as the United States, Germany, France, the Netherlands, Taiwan, China, Malaysia, Thailand, Vietnam and Philippines. (b) Basis of Presentation The Company and its domestic subsidiaries maintain their books of account in conformity with financial accounting standards of Japan. Foreign subsidiaries maintain their books of account in conformity with financial accounting standards of the countries of their domicile. Certain adjustments and reclassifications have been incorporated in the accompanying consolidated financial statements to conform with U.S. generally accepted accounting principles (“U.S. GAAP”). These adjustments were not recorded in the statutory books of account. Canon has separated the presentation of allowance for credit losses from the related receivable balances which are included in trade receivables, prepaid expenses and other current assets, and other assets in the accompanying consolidated balance sheets, from 2021. Consolidated balance sheet for the year ended December 31, 2020 has also been reclassified. Canon has also changed the presentation of “Short-term loans related to financial services” separated from “Short-term loans and current portion of long-term debt” in the consolidated balance sheets from 2021. Further, Canon has separated the presentation of “(Decrease) increase in short-term loans related to financial services, net” from “(Decrease) increase in short-term loans, net” and included the presentation of “(Decrease) increase in short-term loans, net” in “Cash flows from financing activities: Other, net” in the consolidated statements of cash flows from 2021. These changes were made to enhance the presentation of the Company’s short-term borrowings for the users of the consolidated financial statements. To conform with the current year change in the presentation, the consolidated balance sheet for the year ended December 31, 2020 and the consolidated statement of cash flows for the years ended December 31, 2020 and 2019 have been reclassified. (c) Principles of Consolidation The consolidated financial statements include the accounts of the Company, its majority owned subsidiaries and those variable interest entities where the Company or its consolidated subsidiaries are the primary beneficiaries. All significant intercompany balances and transactions have been eliminated. (d) Use of Estimates The preparation of the consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and the disclosure of contingent assets and liabilities at the date of the consolidated financial statements and the reported amounts of revenues and expenses during the period. Significant estimates and assumptions are reflected in valuation and disclosure of accounts including: revenue recognition, allowance for credit losses, inventories, long-lived assets, leases, goodwill and other intangible assets with indefinite useful lives, environmental liabilities, deferred tax assets, uncertain tax positions, employee retirement and severance benefit obligations and business combinations. Actual results could differ materially from those estimates. In addition, new waves of COVID-19 COVID-19 COVID-19. (e) Translation of Foreign Currencies Assets and liabilities of the Company’s subsidiaries located outside Japan with functional currencies other than Japanese yen are translated into Japanese yen at the rates of exchange in effect at the balance sheet date. Income and expense items are translated at the average exchange rates prevailing during the year. Gains and losses resulting from translation of financial statements are excluded from earnings and are reported in other comprehensive income (loss). Gains and losses resulting from foreign currency transactions and translation of assets and liabilities denominated in foreign currencies are included in other income (deductions) in the consolidated statements of income. Foreign currency exchange gains and losses were net losses of ¥21,746 million, ¥4,451 million and ¥4,236 million for the years ended December 31, 2021, 2020 and 2019, respectively. (f) Cash Equivalents All highly liquid investments acquired with original maturities of three months or less are considered to be cash equivalents. Certain debt securities with original maturities of less than three months, classified as available-for-sale (g) Investments Investments consist primarily of time deposits with original maturities of more than three months, debt and equity securities and investments in affiliated companies. Canon classifies investments in debt securities as held-to-maturity available-for-sale Available-for-sale available-for-sale Held-to-maturity Available-for-sale available-for-sale available-for-sale Canon measures non-marketable Realized gains and losses are determined by the average cost method and reflected in earnings. Investments in affiliated companies over which Canon has the ability to exercise significant influence, but does not hold a controlling financial interest, are accounted for by the equity method. (h) Allowance for credit losses Allowance for credit losses for trade and finance receivables is maintained for all customers based on ASC 326 “Financial Instruments—Credit Losses”, considering various factors, including aging analysis, macroeconomic conditions and historical experience. An additional reserve for individual accounts is recorded when Canon becomes aware of a customer’s inability to meet its financial obligations, such as in the case of bankruptcy filings. If circumstances related to customers change, estimates of the recoverability of receivables would be further adjusted. When all collection options are exhausted including legal recourse, the accounts or portions thereof are deemed to be uncollectable and charged against the allowance. (i) Inventories Inventories are stated at the lower of cost or net realizable value. Cost is determined by the average method for domestic inventories and principally by the first-in, first-out (j) Impairment of Long-Lived Assets Long-lived assets, such as property, plant and equipment, and acquired intangible assets subject to amortization, are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable. Recoverability of assets to be held and used is measured by a comparison of the carrying amount of the asset and the estimated undiscounted future cash flows expected to be generated by the asset. If the carrying amount of the asset exceeds its estimated sum of undiscounted future cash flows, an impairment charge is recognized in the amount by which the carrying amount of the asset exceeds the fair value of the asset. Assets to be disposed of by sale are reported at the lower of the carrying amount or fair value less costs to sell, and are no longer depreciated. (k) Property, Plant and Equipment, net Property, plant and equipment are stated at cost less accumulated depreciation. Depreciation is calculated principally by the declining-balance method, except for certain assets which are depreciated by the straight-line method over the estimated useful lives of the assets. The depreciation period ranges from 3 years to 60 years for buildings and 1 year to 20 years for machinery and equipment. (l) Leases As for lessor accounting, Canon provides leasing arrangements to its customers primarily for the sale of office products. Revenue from the sale of these products under sales-type leases is recognized at the inception of the lease. Interest income on sales-type leases and direct-financing leases is recognized over the life of each respective lease using the interest method. Leases not qualifying as sales-type leases or direct-financing leases are accounted for as operating leases and related revenue is recognized ratably over the lease term. When product leases are bundled with maintenance contracts, revenue is allocated based upon the estimated standalone selling prices of the lease and non-lease non-lease As for lessee accounting, Canon has operating and finance leases for various assets including office buildings, warehouses, employees’ accommodations, and vehicles. Canon determines if an arrangement is a lease at the inception of each contract. Some of the contracts include options to extend or to terminate the lease. Canon takes such options into account to determine the lease term when it is reasonably certain that it will exercise these options. Canon’s lease arrangements do not contain material residual value guarantees or material restrictive covenants. As a rate implicit in the most of Canon’s leases cannot be determined, Canon uses incremental borrowing rates based on the information available at commencement to determine the present values of lease payments. Canon has lease contracts with lease and non-lease components, which are accounted for separately. Canon allocates the consideration in the lease contract to the lease and non-lease components based upon the estimated standalone prices. Costs associated with operating lease assets are recognized on a straight-line basis over the term of the lease. (m) Goodwill and other intangible assets Goodwill and other intangible assets with indefinite useful lives are not amortized, but are instead tested for impairment annually in the fourth quarter of each year, or more frequently if indicators of potential impairment exist. All goodwill is assigned to the reporting unit or units that benefit from the synergies arising from each business combination. If the carrying amount assigned to the reporting unit exceeds the fair value of the reporting unit, Canon recognizes an impairment charge in an amount equal to that excess, limited to the total amount of goodwill allocated to that reporting unit. Intangible assets with finite useful lives consist primarily of software, trademarks, patents and developed technology, license fees and customer relationships, which are amortized using the straight-line method. The estimated useful lives of software are from 3 years to 8 years, trademarks are 15 years, patents and developed technology are from 5 years to 21 years, license fees are 8 years, and customer relationships are from 7 years to 15 years. Certain costs incurred in connection with developing or obtaining internal-use internal-use In addition, Canon capitalizes the cost which was incurred subsequent to the stage of assuring the technological feasibility of the software for marketing purposes either developed or acquired. (n) Environmental Liabilities Liabilities for environmental remediation and other environmental costs are accrued when environmental assessments or remedial efforts are probable and the costs can be reasonably estimated, and are included in other noncurrent liabilities in the consolidated balance sheets. Such liabilities are adjusted as further information develops or circumstances change. Costs of future obligations are not discounted to their present values. (o) Income Taxes Deferred tax assets and liabilities are recognized for the estimated future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases and operating loss and tax credit carryforwards. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which those temporary differences are expected to be recovered or settled. The effect on deferred tax assets and liabilities of a change in tax rates is recognized in income in the period that includes the enactment date. Canon records a valuation allowance to reduce the deferred tax assets to the amount that is more likely than not realizable. Canon recognizes the financial statement effects of tax positions when it is more likely than not, based on the technical merits, that the tax positions will be sustained upon examination by the tax authorities. Benefits from tax positions that meet the more-likely-than-not largest amount of benefit that is greater than 50% likely of being realized upon settlement. Interest and penalties accrued related to unrecognized tax benefits are included in income taxes in the consolidated statements of income. (p) Stock-Based Compensation Canon measures stock-based compensation cost at the grant date, based on the fair value of the award, and recognizes the cost on a straight-line basis over the requisite service period, which is the vesting period. (q) Net Income Attributable to Canon Inc. Shareholders per Share Basic net income attributable to Canon Inc. shareholders per share is computed by dividing net income attributable to Canon Inc. by the weighted-average number of common shares outstanding during each year. Diluted net income attributable to Canon Inc. shareholders per share includes the effect from potential issuances of common stock based on the assumptions that all stock options were exercised. (r) Revenue Recognition Canon generates revenue through the sale of products of the Printing Business Unit, the Imaging Business Unit, the Medical Business Unit and the Industrial and Others Business Unit, supplies and related services under separate contractual arrangements. Revenue is recognized when, or as, control of promised goods or services transfers to customers in an amount that reflects the consideration to which Canon expects to be entitled in exchange for transferring these goods or services. For further information, please refer to Note 15. (s) Research and Development Costs Research and development costs are expensed as incurred. (t) Advertising Costs Advertising costs are expensed as incurred. Advertising expenses were ¥36,812 million, ¥31,273 million and ¥46,665 million for the years ended December 31, 2021, 2020 and 2019, respectively. (u) Shipping and Handling Costs Shipping and handling costs totaled ¥53,347 million, ¥47,721 million and ¥51,718 million for the years ended December 31, 2021, 2020 and 2019, respectively, and are included in selling, general and administrative expenses in the consolidated statements of income. (v) Derivative Financial Instruments All derivatives are recognized at fair value and are included in prepaid expenses and other current assets, or other current liabilities in the consolidated balance sheets. Canon uses and designates certain derivatives as a hedge of a forecasted transaction or the variability of cash flows to be received or paid related to a recognized asset or liability (“cash flow” hedge). Canon formally documents all relationships between hedging instruments and hedged items, as well as its risk-management objective and strategy for undertaking various hedge transactions. Canon also formally assesses, both at the hedge’s inception and on an ongoing basis, whether the derivatives that are used in hedging transactions are highly effective in offsetting changes in cash flows of hedged items. When it is determined that a derivative is not highly effective as a hedge or that it has ceased to be a highly effective hedge, Canon discontinues hedge accounting prospectively. Changes in the fair value of a derivative that is designated and qualifies as a cash flow hedge are recorded in other comprehensive income (loss), until earnings are affected by the variability in cash flows of the hedged item, and reclassified in the same income statement line item in which the earnings effect of the hedged item is reported. Canon also uses certain derivative financial instruments which are not designated as hedges. The changes in fair values of these derivative financial instruments are immediately recorded in earnings. Canon classifies cash flows from derivatives as cash flows from operating activities in the consolidated statements of cash flows. (w) Guarantees Canon recognizes, at the inception of a guarantee, a liability for the fair value of the obligation it has undertaken in issuing guarantees. (x) Recent Accounting Guidance Canon evaluates all recently issued accounting pronouncements applicable to its consolidated financial statements. No new accounting pronouncement issued or effective has had, or is expected to have, a material impact on Canon’s consolidated financial statements. (y) Correction of an Immaterial Error During the year ended December 31, 2020, Canon corrected an error in its previously issued consolidated financial statements related to accounting for the Company and domestic subsidiaries’ compensated absence carryforward in accordance with ASC 710 “Compensation.” In evaluating whether the previously issued consolidated financial statements were materially misstated for the annual periods prior to December 31, 2020, Canon applied the guidance of ASC 250, “Accounting Changes and Error Corrections,” SEC Staff Accounting Bulletin (“SAB”) Topic 1.M “Assessing Materiality” and SAB Topic 1.N “Considering the Effects of Prior Period Misstatements when Quantifying Misstatements in Current Year Financial Statements,” and concluded that the effect of the error on prior period financial statements was immaterial; however, the cumulative effect of correcting the prior period misstatements in the year ended December 31, 2020 would have been material to the December 31, 2020 consolidated financial statements. As a result, Canon previously revised its consolidated financial statements as follows: Consolidated statement of income as revised in 2020 Year ended December 31, 2019 As revised As previously (Millions of yen) Selling, general and administrative expenses 1,137,110 1,136,863 Operating profit 174,420 174,667 Income before income taxes 195,493 195,740 Income taxes 56,146 56,223 Consolidated net income 139,347 139,517 Less: Net income attributable to noncontrolling interests 14,383 14,412 Net income attributable to Canon Inc. 124,964 125,105 (Yen) Net income attributable to Canon Inc. shareholders per share: Basic 116.79 116.93 Diluted 116.77 116.91 Consolidated statement of comprehensive income as revised in 2020 Year ended December 31, 2019 As revised As previously (Millions of yen) Consolidated net income 139,347 139,517 Less: Comprehensive income attributable to noncontrolling interests 16,353 16,382 Comprehensive income (loss) attributable to Canon Inc. 86,139 86,280 Consolidated statement of cash flows as revised in 2020 Year ended December 31, 2019 As revised As previously (Millions of yen) Consolidated net income 139,347 139,517 Increase in accrued expenses 9,738 9,491 Deferred income taxes (6,523 ) (6,446 ) The consolidated statement of equity has been revised, accordingly.

Investments

Investments	12 Months Ended
	Dec. 31, 2021
Investments, Debt and Equity Securities [Abstract]
Investments	2. Investments Held-to-maturity debt securities included in short-term investments in the accompanying consolidated balance sheet were ¥2,164 million at December 31, 2021. There were no held-to-maturity debt securities as of December 31, 2020. Held-to-maturity debt securities included in short-term investments at December 31, 2021 are as follows: Carrying amount Estimated fair value Difference (Millions of yen) Due within one year 2,164 2,167 3 There were no available-for-sale debt securities included in short-term investments and investments at December 31, 2021 and 2020, respectively. The unrealized and realized gains and losses related to equity securities for the years ended December 31, 2021, 2020 and 2019 are as follows: Years ended December 31 2021 2020 2019 (Millions of yen) Net gains and (losses) recognized during the period on equity securities 8,958 1,959 2,148 Less: Net gains and (losses) recognized during the period on equity securities sold during the period 467 477 (76 ) Unrealized gains and (losses) recognized during the period on equity securities still held at December 31 8,491 1,482 2,224 The carrying amount of non-marketable Time deposits with original maturities of more than three months are ¥1,213 million and ¥71 million at December 31, 2021 and 2020, respectively, and are included in short-term investments in the accompanying consolidated balance sheets. Investments in affiliated companies accounted for by the equity method are as follows: Years ended December 31 2021 Ownership percentage 2021 2020 (Millions of yen, except percentage data) Canon Korea Inc. 50 % 11,627 10,719 Others — 10,398 8,915 — 22,025 19,634 The difference between the carrying amount of investment in each affiliate and Canon’s share of its net assets is immaterial. Canon’s share of the net earnings in affiliated companies accounted for by the equity method, included in other income (deductions), were earnings of ¥1,396 million for the year ended December 31, 2021, and losses of ¥994 million and ¥311 million for the years ended December 31, 2020 and 2019, respectively.

Trade Receivables

Trade Receivables	12 Months Ended
	Dec. 31, 2021
Receivables [Abstract]
Trade Receivables	3. Trade Receivables Trade receivables are summarized as follows: December 31 2021 2020 (Millions of yen) Notes 28,616 34,922 Accounts 493,816 511,849 Trade receivables 522,432 546,771 Less allowance for credit losses (12,494 ) (11,645 ) 509,938 535,126

Inventories

Inventories	12 Months Ended
	Dec. 31, 2021
Inventory Disclosure [Abstract]
Inventories	4. Inventories Inventories are summarized as follows: December 31 2021 2020 (Millions of yen) Finished goods 395,381 352,513 Work in process 199,153 160,696 Raw materials 56,034 49,598 650,568 562,807

Property, Plant and Equipment

Property, Plant and Equipment	12 Months Ended
	Dec. 31, 2021
Property, Plant and Equipment [Abstract]
Property, Plant and Equipment	5. Property, Plant and Equipment Property, plant and equipment are stated at cost less accumulated depreciation and are summarized as follows: December 31 2021 2020 (Millions of yen) Land 276,306 270,308 Buildings 1,728,811 1,687,921 Machinery and equipment 1,849,271 1,806,185 Construction in progress 43,283 37,324 Finance right-of-use 6,533 6,048 Cost 3,904,204 3,807,786 Less accumulated depreciation (2,862,801 ) (2,770,106 ) Property, plant and equipment, net 1,041,403 1,037,680 Depreciation expenses for the years ended December 31, 2021, 2020 and 2019 were ¥156,333 million, ¥162,733 million and ¥170,418 million, respectively. Amounts due for purchases of property, plant and equipment were ¥29,562 million and ¥27,688 million at December 31, 2021 and 2020, respectively, and are included in other current liabilities in the accompanying consolidated balance sheets. Fixed assets presented in the consolidated statements of cash flows include property, plant and equipment and intangible assets.

Lessor Accounting

Lessor Accounting	12 Months Ended
	Dec. 31, 2021
Leases [Abstract]
Lessor Accounting	6. Lessor Accounting Lease income is included in Products and Equipment sales in the accompanying consolidated statements of income. Supplemental income statement information is as follows: Years ended December 31 2021 2020 (Millions of yen) Lease income – sales-type and direct financing leases Revenue at lease commencement 84,895 92,133 Interest income on lease receivables 18,351 18,594 103,246 110,727 Lease income – operating leases 27,122 23,878 Variable lease income 5,277 5,343 135,645 139,948 Finance Receivables and Operating Leases Finance receivables represent financing leases, which consist of sales-type leases and direct financing leases. These receivables typically have terms ranging from 1 year to 8 years. The components of the finance receivables, which are included in prepaid expenses and other current assets, and other assets in the accompanying consolidated balance sheets, are as follows: December 31 2021 2020 (Millions of yen) Total minimum lease payments receivable 366,051 337,265 Unguaranteed residual values 12,192 11,459 Executory costs — — Unearned income (31,619 ) (29,541 ) 346,624 319,183 Less allowance for credit losses (3,791 ) (3,068 ) 342,833 316,115 Less current portion (119,902 ) (108,837 ) 222,931 207,278 Allowance for Credit Losses The activities in the allowance for credit losses are as follows: Years ended December 31 2021 2020 (Millions of yen) Balance at beginning of year 3,068 2,627 Charge-offs (2,157 ) (2,199 ) Provision 2,331 2,351 Translation adjustments and other 549 289 Balance at end of year 3,791 3,068 Canon has policies in place to ensure that its products are sold to customers with an appropriate credit history and continuously monitors its customers’ credit quality based on information including length of period in arrears, macroeconomic conditions, initiation of legal proceedings against customers and bankruptcy filings. The allowance for credit losses of finance receivables is evaluated collectively based on historical experiences of credit losses. An additional reserve for individual accounts is recorded when Canon becomes aware of a customer’s inability to meet its financial obligations, such as in the case of bankruptcy filings. Finance receivables which are past due or individually evaluated for impairment at December 31, 2021 and December 31, 2020 are not significant. Equipment leased to customers The cost of equipment leased to customers under operating leases included in property, plant and equipment, net at December 31, 2021 and 2020 was ¥143,160 million and ¥132,763 million, respectively. Accumulated depreciation on equipment under operating leases at December 31, 2021 and 2020 was ¥87,879 million and ¥81,345 million, respectively. Maturity Analysis The following is a schedule by year of the future minimum lease payments to be received under finance leases and non-cancellable Financing Operating (Millions of yen) Year ending December 31: 2022 131,113 11,578 2023 99,168 7,168 2024 68,241 4,914 2025 41,600 2,972 2026 18,550 1,471 Thereafter 7,379 1,402 366,051 29,505 Information about transferring finance receivables Canon has syndication arrangements to sell its entire interests in finance receivables to the third-party financial institutions. The transactions under the arrangements are accounted for as sales in accordance with ASC 860 “Transfers and Servicing.” The transfers of finance receivables for the year ended December 31, 2020 and 2019 were ¥19,185 million and ¥11,710 million while there were no significant transfers of finance receivables for the year ended December 31, 2021. The amount that remained uncollected was ¥23,984 million and ¥36,339 million at December 31, 2021 and 2020, respectively. Cash proceeds from the transactions are included in other, net under the cash flow from operating activities in the consolidated statements of cash flows. Canon continues to provide collection and administrative services for the financial institutions. The amount associated with the servicing liability measured at fair value was not significant at December 31, 2021 and 2020. Canon also retains limited recourse obligations which cover credit defaults. The recourse obligations were not significant at December 31, 2021 and 2020.

Acquisitions

Acquisitions	12 Months Ended
	Dec. 31, 2021
Business Combinations [Abstract]
Acquisitions	7. Acquisitions On September 28, 2021, Canon acquired 87.0% of the issued shares of Redlen Technologies Inc. (“Redlen”), a Canada-based company, for the cash consideration of ¥31,640 million, making it a wholly owned subsidiary of Canon. Redlen possesses advanced technologies of radiation detection and imaging solutions of Cadmium Zinc Telluride (“CZT”) semiconductor detector modules which play an important role in the development of photon-counting CT systems (“PCCT”). This technology will enable Canon to accelerate the development of competitive PCCT systems, and strengthen its CT systems and the medical systems business. In addition, Canon will provide CZT semiconductor detector modules to medical equipment manufacturers around the world, thus helping to strengthen Canon’s medical component business. In this way, Canon will continue to contribute to the advancement of global diagnostic imaging. The acquisition was accounted for using the acquisition method of accounting. Acquisition-related costs were expensed as incurred and were not material. Prior to the acquisition date, Canon held an investment in Redlen at a value of ¥1,252 million. Using step acquisition accounting, Canon remeasured the acquisition-date carrying value of its previously held equity investment to its fair value of ¥5,223 million using the fair value of Redlen’s issued shares on the acquisition date, which resulted in a gain of approximately ¥3,971 million, recorded in other, net of other income (deductions) in the consolidated statements of income. The consideration for the acquisition was provisionally valued at the acquisition date based on the Share Purchase Agreement, and subsequently, an adjustment was made to the acquisition price within the measurement period after the acquisition date and determined as of December 31, 2021. As a result, the fair value of the previously held equity investment before the acquisition date and the gain on the step acquisition have been adjusted. The final allocation of the purchase price to the assets acquired and the liabilities assumed on the acquisition date was as follows: (Millions of yen) Current assets 4,043 Intangible assets 8,955 Goodwill 28,826 Others 389 Assets acquired 42,213 Liabilities assumed 5,350 Net assets acquired 36,863 The intangible assets acquired are composed by ¥8,929 million of technical assets and ¥26 million of other intangible assets, and is subject to amortization. The useful life of the technical assets and the other intangible assets are 21 years and 5 years, respectively. The weighted average useful life of the total intangible assets is approximately 21 years. Goodwill is composed of the synergy effects of merging Redlen and Canon which is not tax deductible. The items is allocated to the Medical Business Unit when conducting the impairment test of goodwill. Net sales and net income of Redlen generated from the acquisition date which is reflected in the consolidated statement of income for the year ended December 31, 2021 was not material. The operating results with the assumption of including the financial statements of Redlen in Canon’s consolidated financial statements for the year ended December 31, 2020 and the year beginning on January 1, 2021 were not disclosed because the impact was not material.

Goodwill and Other Intangible A

Goodwill and Other Intangible Assets	12 Months Ended
	Dec. 31, 2021
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Other Intangible Assets	8. Goodwill and Other Intangible Assets Intangible assets subject to amortization acquired during the year ended December 31, 2021, including those recorded from businesses acquired as stated in Note 7, totaled ¥36,015 million, which primarily consist of software of ¥25,965 million. The weighted average amortization periods for intangible assets in total acquired during the year ended December 31, 2021 are approximately 9 years. The weighted average amortization period for software acquired during the year ended December 31, 2021 is approximately 5 years. Intangible assets subject to amortization acquired during the year ended December 31, 2020, including those recorded from businesses acquired, totaled ¥31,413 million, which primarily consist of software of ¥29,137 million. The weighted average amortization periods for intangible assets in total acquired during the year ended December 31, 2020 are approximately 6 years. The weighted average amortization period for software acquired during the year ended December 31, 2020 is approximately 5 years. The components of intangible assets subject to amortization at December 31, 2021 and 2020 were as follows: December 31, 2021 December 31, 2020 Gross Accumulated Gross Accumulated (Millions of yen) Software 399,331 300,905 379,504 279,372 Customer relationships 158,513 59,465 155,648 46,613 Patents and developed technology 133,923 70,795 124,315 59,328 Trademarks 45,726 21,350 44,914 17,800 License fees 16,881 10,098 13,651 6,065 Other 18,765 10,521 17,163 9,235 773,139 473,134 735,195 418,413 Aggregate amortization expense for the years ended December 31, 2021, 2020 and 2019 was ¥64,913 million, ¥65,092 million and ¥66,909 million, respectively. Estimated amortization expense for intangible assets currently held for the next five years ending December 31 is ¥55,921 million in 2022, ¥47,476 million in 2023, ¥38,534 million in 2024, ¥31,977 million in 2025, and ¥28,302 million in 2026. Intangible assets not subject to amortization other than goodwill at December 31, 2021 and 2020 were not significant. For management reporting purposes, goodwill is not allocated to the reporting unit. Goodwill has been allocated to its respective reporting unit for impairment testing. The changes in the carrying amount of goodwill by segment for the years ended December 31, 2021 and 2020 were as follows: Year ended December 31, 2021 Printing Imaging Medical Industrial Total (Millions of yen) Goodwill – gross 142,185 289,999 506,513 9,283 947,980 Accumulated impairment losses (32,416 ) — — — (32,416 ) Balance at beginning of year 109,769 289,999 506,513 9,283 915,564 Goodwill acquired during the year — — 28,826 — 28,826 Translation adjustments and other 2,931 3,750 1,844 935 9,460 Goodwill – gross 146,025 293,749 537,183 10,218 987,175 Accumulated impairment losses (33,325 ) — — — (33,325 ) Balance at end of year 112,700 293,749 537,183 10,218 953,850 Year ended December 31, 2020 Printing Imaging Medical Industrial Total (Millions of yen) Goodwill – gross 139,036 272,241 508,907 9,767 929,951 Accumulated impairment losses (31,290 ) — — — (31,290 ) Balance at beginning of year 107,746 272,241 508,907 9,767 898,661 Goodwill acquired during the year — — — — — Translation adjustments and other 2,023 17,758 (2,394 ) (484 ) 16,903 Goodwill – gross 142,185 289,999 506,513 9,283 947,980 Accumulated impairment losses (32,416 ) — — — (32,416 ) Balance at end of year 109,769 289,999 506,513 9,283 915,564 * Based on the realignment of Canon’s internal reporting and management structure, from the beginning of 2021, Canon has changed the name and structure of segments to Printing Business Unit, Imaging Business Unit, Medical Business Unit, and Industrial and Others Business Unit. Changes in the carrying amounts of goodwill by segment for the fiscal year ended December 31, 2020 also have been reclassified.

Short-Term Loans and Long-Term

Short-Term Loans and Long-Term Debt	12 Months Ended
	Dec. 31, 2021
Debt Disclosure [Abstract]
Short-Term Loans and Long-Term Debt	9. Short-Term Loans and Long-Term Debt Short-term loans related to financial services are external loans held by Canon’s lease subsidiaries for the purpose of financing its customers through loans. Short-term loans related to financial services consisting of bank borrowings at December 31, 2021 and 2020 were ¥ million and ¥ million, and other short-term loans consisting of bank borrowings were ¥ Long-term debt consisted of the following: December 31 2021 2020 (Millions of yen) Loan from banks; bearing interest of 0.21% at December 31, 2021 and 0.09% at December 31, 2020 *1 174,000 344,000 Other debt *2 7,040 6,608 181,040 350,608 Less current portion (1,290 ) (345,774 ) 179,750 4,834 *1 Canon prepaid ¥170,000 million of the outstanding loan under the unsecured revolving credit facility contracts on December 28, 2021 before its due date. The remaining balance of ¥174,000 million was refinanced with a new expiration date in December 2023 under the credit facilities. The outstanding loans under the credit facilities are ¥ *2 Other debt consisted of term-loans and finance lease obligations as of December 31, 2021 and 2020. The aggregate annual maturities of long-term debt outstanding at December 31, 2021 were as follows: (Millions of yen) Year ending December 31: 2022 1,290 2023 174,920 2024 609 2025 417 2026 237 Thereafter 3,567 181,040 Both short-term and long-term bank loans are primarily made 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.

Trade Payables

Trade Payables	12 Months Ended
	Dec. 31, 2021
Payables and Accruals [Abstract]
Trade Payables	10. Trade Payables Trade payables are summarized as follows: December 31 2021 2020 (Millions of yen) Notes 82,243 83,468 Accounts 256,361 220,341 338,604 303,809

Employee Retirement and Severan

Employee Retirement and Severance Benefits	12 Months Ended
	Dec. 31, 2021
Retirement Benefits [Abstract]
Employee Retirement and Severance Benefits	11. Employee Retirement and Severance Benefits The Company and certain of its subsidiaries have contributory and noncontributory defined benefit pension plans covering substantially all of their employees. Benefits payable under the plans are based on employee earnings and years of service. The Company and certain of its subsidiaries also have defined contribution pension plans covering substantially all of their employees. Canon Medical Systems Corporation (“CMSC”) temporarily participated in Toshiba Corporate Pension Funds (“Toshiba Funds”) after Toshiba Medical Systems Corporation (currently, Canon Medical Systems Corporation) was acquired by Canon in 2016. In April 2018, CMSC established a new pension provision which provides participants an equivalent level of benefits as compared to the Toshiba Funds. As of December 31, 2018, a majority of plan participants had been transferred from the Toshiba Funds into the new pension provision. Canon calculated the projected benefit obligations for the remaining participants within the Toshiba Funds based on the benefit level of the Toshiba Funds and included the proportional share of the plan assets to which CMSC had a legal right in the following tables for the remaining participants as of December 31, 2018. In March 2019, CMSC settled the pension obligations attributed to the remaining participants within the Toshiba Funds. The loss recognized due to the settlement in the consolidated statement of income for the year ended December 31, 2019 was not significant. Obligations and funded status Reconciliations of beginning and ending balances of the projected benefit obligations and the fair value of the plan assets are as follows: Japanese plans Foreign plans December 31 December 31 2021 2020 2021 2020 (Millions of yen) (Millions of yen) Change in benefit obligations: Projected benefit obligations at beginning of year 911,121 925,390 477,337 439,624 Service cost 30,194 30,604 3,827 5,303 Interest cost 4,815 4,064 5,965 6,087 Plan participants’ contributions — — 658 860 Actuarial (gain) loss 2,935 (11,432 ) (21,133 ) 43,202 Benefits paid (39,390 ) (36,646 ) (13,471 ) (12,351 ) Plan amendments (41 ) (859 ) (10,617 ) (1,463 ) Curtailments and settlements — — (682 ) (6,004 ) Foreign currency exchange rate changes — — 34,346 2,079 Projected benefit obligations at end of year 909,634 911,121 476,230 477,337 Change in plan assets: Fair value of plan assets at beginning of year 724,039 704,169 321,713 294,829 Actual return on plan assets 52,688 36,060 24,024 23,912 Employer contributions 11,652 13,360 32,130 13,605 Plan participants’ contributions — — 658 860 Benefits paid (31,636 ) (29,550 ) (13,471 ) (12,351 ) Settlements — — 1,743 (805 ) Foreign currency exchange rate changes — — 28,115 1,663 Fair value of plan assets at end of year 756,743 724,039 394,912 321,713 Funded status at end of year (152,891 ) (187,082 ) (81,318 ) (155,624 ) Amounts recognized in the consolidated balance sheets at December 31, 2021 and 2020 are as follows: Japanese plans Foreign plans December 31 December 31 2021 2020 2021 2020 (Millions of yen) (Millions of yen) Other assets 2,911 2,684 13,596 2,236 Accrued expenses (1,208 ) (791 ) (1,041 ) (938 ) Accrued pension and severance cost (154,594 ) (188,975 ) (93,873 ) (156,922 ) (152,891 ) (187,082 ) (81,318 ) (155,624 ) Amounts recognized in accumulated other comprehensive income (loss) at December 31, 2021 and 2020 before the effect of income taxes are as follows: Japanese plans Foreign plans December 31 December 31 2021 2020 2021 2020 (Millions of yen) (Millions of yen) Actuarial loss 156,028 192,931 104,647 142,455 Prior service credit (20,371 ) (28,633 ) (10,319 ) (520 ) 135,657 164,298 94,328 141,935 The accumulated benefit obligation for all defined benefit plans was as follows: Japanese plans Foreign plans December 31 December 31 2021 2020 2021 2020 (Millions of yen) (Millions of yen) Accumulated benefit obligation 883,462 879,136 462,306 460,536 The projected benefit obligations and the fair value of plan assets for the pension plans with projected benefit obligations in excess of plan assets, and the accumulated benefit obligations and the fair value of plan assets for the pension plans with accumulated benefit obligations in excess of plan assets are as follows: Japanese plans Foreign plans December 31 December 31 2021 2020 2021 2020 (Millions of yen) (Millions of yen) Plans with projected benefit obligations in excess of plan assets: Projected benefit obligations 895,898 897,669 473,860 475,137 Fair value of plan assets 739,581 707,708 391,054 318,079 Plans with accumulated benefit obligations in excess of plan assets: Accumulated benefit obligations 870,314 874,327 455,164 453,120 Fair value of plan assets 739,581 707,708 386,223 312,748 Components of net periodic benefit cost and other amounts recognized in other comprehensive income (loss) Net periodic benefit cost for Canon’s employee retirement and severance defined benefit plans for the years ended December 31, 2021, 2020 and 2019 consisted of the following components: Japanese plans Foreign plans Years ended December 31 Years ended December 31 2021 2020 2019 2021 2020 2019 (Millions of yen) (Millions of yen) Service cost 30,194 30,604 30,903 3,827 5,303 6,264 Interest cost 4,815 4,064 5,074 5,965 6,087 8,643 Expected return on plan assets (21,618 ) (21,013 ) (19,553 ) (15,221 ) (12,006 ) (11,919 ) Amortization of prior service credit (8,303 ) (8,732 ) (11,877 ) (818 ) (675 ) (133 ) Amortization of actuarial loss 8,768 12,401 15,247 7,341 6,122 4,345 (Gain) loss on curtailments and settlements — — (36 ) — 236 (2,197 ) 13,856 17,324 19,758 1,094 5,067 5,003 Service cost component of net periodic benefit cost for Canon’s employee retirement and severance defined benefit plans is included in cost of sales and operating expenses in the consolidated statements of income. The components other than the service cost component are included in other, net of other income (deductions) in the consolidated statements of income. Other changes in plan assets and benefit obligations recognized in other comprehensive income (loss) for the years ended December 31, 2021, 2020 and 2019 are summarized as follows: Japanese plans Foreign plans Years ended December 31 Years ended December 31 2021 2020 2019 2021 2020 2019 (Millions of yen) (Millions of yen) Current year actuarial (gain) loss (28,135 ) (26,479 ) (19,328 ) (29,936 ) 31,296 28,882 Current year prior service credit (41 ) (859 ) — (10,617 ) (1,463 ) 362 Amortization of actuarial loss (8,768 ) (12,401 ) (15,247 ) (7,341 ) (6,122 ) (4,345 ) Amortization of prior service credit 8,303 8,732 11,877 818 675 133 Curtailments and settlements — — (960 ) (531 ) (966 ) (1,411 ) (28,641 ) (31,007 ) (23,658 ) (47,607 ) 23,420 23,621 Assumptions Weighted-average assumptions used to determine benefit obligations are as follows: Japanese plans Foreign plans December 31 December 31 2021 2020 2021 2020 Discount rate 0.5 % 0.5 % 1.5 % 1.5 % Assumed rate of increase in future compensation levels 2.6 % 2.6 % 0.7 % 0.9 % Interest crediting rate for cash balance plans 1.9 % 1.9 % 1.0 % 1.0 % Weighted-average assumptions used to determine net periodic benefit cost are as follows: Japanese plans Foreign plans Years ended December 31 Years ended December 31 2021 2020 2019 2021 2020 2019 Discount rate 0.5 % 0.5 % 0.6 % 1.5 % 1.6 % 2.4 % Assumed rate of increase in future compensation levels 2.6 % 2.6 % 2.6 % 0.9 % 1.0 % 1.9 % Expected long-term rate of return on plan assets 3.0 % 3.0 % 3.0 % 4.4 % 4.8 % 5.2 % Interest crediting rate for cash balance plans 1.9 % 1.9 % 1.9 % 1.0 % 1.0 % 1.0 % Canon determines the expected long-term rate of return based on the expected long-term return of the various asset categories in which it invests. Canon considers the current expectations for future returns and the actual historical returns of each plan asset category. Plan assets Canon’s investment policies are designed to ensure adequate plan assets are available to provide future payments of pension benefits to eligible participants. Taking into account the expected long-term rate of return on plan assets, Canon formulates a “model” portfolio comprised of the optimal combination of equity securities and debt securities. Plan assets are invested in individual equity and debt securities using the guidelines of the “model” portfolio in order to produce a total return that will match the expected return on a mid-term Canon’s model portfolio for Japanese plans consists of three major components: approximately 25% is invested in equity securities, approximately 50% is invested in debt securities, and approximately 25 % is invested in other products, such as investments in insurance contracts including life insurance company general accounts. Outside Japan, investment policies vary by country, but Canon’s model portfolio for foreign plans consists of three major components: approximately 20% is invested in equity securities, approximately 30% is invested in debt securities, and approximately 50% is invested in other products, such as investments in real estate assets. The target allocation percentages of plan assets set by Canon’s investment policies approximate the actual allocation percentages of plan assets at December 31, 2021 and 2020. The equity securities are selected primarily from stocks that are listed on securities exchanges. Prior to investing, Canon investigates the business condition of the investee companies, and appropriately diversifies investments by type of industry and other relevant factors. The debt securities are selected primarily from government bonds, public debt instruments, and corporate bonds. Prior to investing, Canon investigates the quality of the issue, including rating, interest rate, and repayment dates, and appropriately diversifies the investments. Pooled funds are selected using strategies consistent with the equity and debt securities described above. As for insurance contracts, there are several types of insurance contracts between Canon and the life insurance companies including life insurance company general accounts which guarantee the payments of interest based on expected interest rates and return of capital, and insured pension plans which cover future designated contractual benefit payments to covered participants. With respect to investments in foreign financial products, Canon investigates the stability of the underlying governments and economies, the market characteristics such as settlement systems and the taxation systems. For each such investment, Canon selects the appropriate investment country and currency. The three levels of input used to measure fair value are more fully described in Note 22. The fair values of Canon’s pension plan assets at December 31, 2021 and 2020, by asset category, are as follows: December 31, 2021 Japanese plans Foreign plans Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Total (Millions of yen) Equity securities: Japanese companies (a) 95,698 — — 95,698 — — — — Foreign companies 12,746 — — 12,746 11,628 — — 11,628 Pooled funds (b) — 180,286 — 180,286 — 43,026 — 43,026 Debt securities: Government bonds (c) 133,691 — — 133,691 — — — — Municipal bonds — 1,264 — 1,264 — 2,899 — 2,899 Corporate bonds — 19,373 — 19,373 — 7,821 — 7,821 Pooled funds (d) — 145,348 — 145,348 — 138,687 — 138,687 Mortgage backed securities (and other asset backed securities) — 11,449 — 11,449 — 6,826 — 6,826 Insurance contracts — 114,624 — 114,624 — 6,287 39,398 45,685 Other assets — 28,181 366 28,547 — 106,657 532 107,189 Investment measured at net asset value — — — 13,717 — — — 31,151 242,135 500,525 366 756,743 11,628 312,203 39,930 394,912 December 31, 2020 Japanese plans Foreign plans Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Total (Millions of yen) Equity securities: Japanese companies (e) 80,201 — — 80,201 — — — — Foreign companies 9,807 — — 9,807 10,267 — — 10,267 Pooled funds (f) — 168,745 — 168,745 37,538 37,538 Debt securities: Government bonds (g) 136,771 — — 136,771 — — — — Municipal bonds — 1,126 — 1,126 — 2,324 — 2,324 Corporate bonds — 15,617 — 15,617 — 6,375 — 6,375 Pooled funds (h) — 140,825 — 140,825 — 108,499 — 108,499 Mortgage backed securities (and other asset backed securities) — 8,308 — 8,308 — 2,696 — 2,696 Life insurance company general accounts — 117,762 — 117,762 — 27,953 — 27,953 Other assets — 28,731 1,356 30,087 — 102,159 — 102,159 Investment measured at net asset value — — — 14,790 — — — 23,902 226,779 481,114 1,356 724,039 10,267 287,544 — 321,713 (a) The plan’s equity securities include common stock of the Company and certain of its subsidiaries in the amounts of ¥234 million. (b) These funds invest in listed equity securities consisting of approximately 30% Japanese companies and 70% foreign companies for Japanese plans, and mainly foreign companies for foreign plans. (c) This class includes approximately 80% Japanese government bonds and 20% foreign government bonds for Japanese plans. (d) These funds invest in approximately 25% Japanese government bonds, 55% foreign government bonds, 5% Japanese municipal bonds, and 15% corporate bonds for Japanese plans. These funds invest in approximately 75% foreign government bonds and 25% corporate bonds for foreign plans. (e) The plan’s equity securities include common stock of the Company and certain of its subsidiaries in the amounts of ¥282 million. (f) These funds invest in listed equity securities consisting of approximately 30% Japanese companies and 70% foreign companies for Japanese plans, and mainly foreign companies for foreign plans. (g) This class includes approximately 85% Japanese government bonds and 15% foreign government bonds for Japanese plans, and mainly foreign government bonds for foreign plans. (h) These funds invest in approximately 25% Japanese government bonds, 55% foreign government bonds, 5% Japanese municipal bonds, and 15% corporate bonds for Japanese plans. These funds invest in approximately 60% foreign government bonds and 40% corporate bonds for foreign plans. Each level into which assets are categorized is based on inputs used to measure the fair value of the assets, and does not necessarily indicate the risks or ratings of the assets. Level 1 assets are comprised principally of equity securities and government bonds, which are valued using unadjusted quoted market prices in active markets with sufficient volume and frequency of transactions. Level 2 assets are comprised principally of pooled funds that invest in equity and debt securities, corporate bonds, investments in life insurance company general accounts and other assets. Pooled funds are valued at their net asset values that are calculated by the sponsor of the fund and have daily liquidity. Corporate bonds are valued using quoted prices for identical assets in markets that are not active. Investments in life insurance company general accounts are valued at conversion value. Other assets are comprised principally of interest bearing cash and hedge funds. The fair values of Level 3 asset, consisting of investments in insured pension plans and hedge funds, were ¥40,296 million and ¥1,356 million at December 31, 2021 and 2020, respectively. Amounts of actual returns on, purchases and sales of these assets during the years ended December 31, 2021 and 2020 were not significant. Contributions Canon expects to contribute ¥15,942 million to its Japanese defined benefit pension plans and ¥18,165 million to its foreign defined benefit pension plans for the year ending December 31, 2022. Estimated future benefit payments The following benefit payments, which reflect expected future service, as appropriate, are expected to be paid: Japanese plans Foreign plans (Millions of yen) (Millions of yen) Year ending December 31: 2022 44,169 15,228 2023 44,772 15,887 2024 44,699 17,151 2025 45,715 18,145 2026 44,479 19,199 2027 – 2031 228,342 116,447 Multiemployer pension plans The amounts of cost recognized for the multiemployer pension plans primarily in the Netherlands for the years ended December 31, 2021, 2020 and 2019 were ¥4,822 million, ¥4,224 million and ¥4,321 million, respectively. The multiemployer pension plan in which the subsidiaries in the Netherlands participated was 97.6% funded as of December 31, 2020. The terms of the collective bargaining agreements are negotiated on a regular basis between the local labor unions and participating employers. Canon is not liable for other participating employers’ obligations under the terms and conditions of the agreements. Defined contribution plans The amounts of cost recognized for the defined contribution pension plans of the Company and certain of its subsidiaries for the years ended December 31, 2021, 2020 and 2019 were ¥22,660 million, ¥16,334 million and ¥17,414 million, respectively.

Income Taxes

Income Taxes	12 Months Ended
	Dec. 31, 2021
Income Tax Disclosure [Abstract]
Income Taxes	12. Income Taxes Domestic and foreign components of income before income taxes and the current and deferred income tax expense attributable to such income are summarized as follows: Year ended December 31, 2021 Japanese Foreign Total (Millions of yen) Income before income taxes 165,927 136,779 302,706 Income taxes: Current 47,491 34,201 81,692 Deferred 6,883 (16,709 ) (9,826 ) 54,374 17,492 71,866 Year ended December 31, 2020 Japanese Foreign Total (Millions of yen) Income before income taxes 48,186 82,094 130,280 Income taxes: Current 24,063 25,816 49,879 Deferred (6,007 ) (9,535 ) (15,542 ) 18,056 16,281 34,337 Year ended December 31, 2019 Japanese Foreign Total (Millions of yen) Income before income taxes 107,082 88,411 195,493 Income taxes: Current 39,483 23,186 62,669 Deferred (4,276 ) (2,247 ) (6,523 ) 35,207 20,939 56,146 The Company and its domestic subsidiaries are subject to a number of income taxes, which, in the aggregate, represent a statutory income tax rate of approximately 31% for the years ended December 31, 2021, 2020 and 2019. A reconciliation of the Japanese statutory income tax rate and the effective income tax rate as a percentage of income before income taxes is as follows: Years ended December 31 2021 2020 2019 Japanese statutory income tax rate 31.0 % 31.0 % 31.0 % Increase (reduction) in income taxes resulting from: Expenses not deductible for tax purposes 0.7 2.3 1.7 Income of foreign subsidiaries taxed at lower than Japanese statutory tax rate (3.9 ) (5.8 ) (2.9 ) Tax credit for research and development expenses (3.2 ) (1.7 ) (2.3 ) Change in valuation allowance (3.9 ) 2.4 (1.6 ) Deferred tax liabilities on undistributed earnings of foreign subsidiaries 4.5 2.6 2.4 Tax credit at foreign subsidiaries (0.3 ) (1.3 ) (1.1 ) Effect of enacted changes in tax laws (1.0 ) (1.5 ) (0.2 ) Other (0.2 ) (1.6 ) 1.7 Effective income tax rate 23.7 % 26.4 % 28.7 % Net deferred income tax assets and liabilities are included in the accompanying consolidated balance sheets under the following captions: December 31 2021 2020 (Millions of yen) Other assets 138,507 154,226 Other noncurrent liabilities (43,402 ) (48,247 ) 95,105 105,979 The tax effects of temporary differences that give rise to the deferred tax assets and deferred tax liabilities at December 31, 2021 and 2020 are presented below: December 31 2021 2020 (Millions of yen) Deferred tax assets: Inventories 11,263 10,551 Accrued business tax 3,387 1,629 Accrued pension and severance cost 67,752 95,386 Research and development – costs capitalized for tax purposes 5,004 4,989 Property, plant and equipment 35,658 34,923 Operating lease liabilities 17,328 20,163 Accrued expenses 29,331 28,243 Net operating losses carried forward 33,873 29,591 Other 48,621 42,741 252,217 268,216 Less valuation allowance (19,073 ) (30,752 ) Total deferred tax assets 233,144 237,464 Deferred tax liabilities: Undistributed earnings of foreign subsidiaries (19,677 ) (9,147 ) Tax deductible reserve (4,007 ) (4,040 ) Financing lease revenue (14,602 ) (15,041 ) Operating lease right-of-use (17,066 ) (19,425 ) Intangible assets (51,173 ) (54,948 ) Other (31,514 ) (28,884 ) Total deferred tax liabilities (138,039 ) (131,485 ) Net deferred tax assets 95,105 105,979 The net changes in the total valuation allowance were a decrease of ¥11,679 million, an increase of ¥3,074 million and a decrease of ¥3,056 million for the years ended December 31, 2021, 2020 and 2019, respectively. Based on the level of historical taxable income and projections for future taxable income over the periods which the net deductible temporary differences are expected to reverse, management believes it is more likely than not that Canon will realize the benefits of these deferred tax assets, net of the valuation allowance, at December 31, 2021. At December 31, 2021, Canon had net operating losses which can be carried forward for income tax purposes of ¥175,581 million to reduce future taxable income. Periods available to reduce future taxable income vary in each tax jurisdiction and generally range from one year to an indefinite period as follows:​​​​​​​ (Millions of yen) Within one year 1,206 After one year through five years 13,869 After five years through ten years 44,316 After ten years through twenty years 8,223 Indefinite period 107,967 175,581 Income taxes have not been accrued on undistributed earnings of domestic subsidiaries as the tax law provides a means by which the dividends from a domestic subsidiary can be received tax free. Canon has not recognized deferred tax liabilities of ¥16,162 million for a portion of undistributed earnings of foreign subsidiaries of ¥875,208 million as of December 31, 2021 because Canon intends to permanently reinvest such undistributed earnings of foreign subsidiaries. Deferred tax liabilities will be recognized when such undistributed earnings are no longer permanently reinvested. A reconciliation of the beginning and ending amount of unrecognized tax benefits is as follows: Years ended December 31 2021 2020 2019 (Millions of yen) Balance at beginning of year 8,572 8,120 8,649 Additions for tax positions of the current year 1,168 — — Additions for tax positions of prior years 216 208 204 Reductions for tax positions of prior years — (49 ) (44 ) Settlements with tax authorities (62 ) — (402 ) Other (81 ) 293 (287 ) Balance at end of year* 9,813 8,572 8,120 * The unrecognized tax benefits were offset by deferred tax assets in the amount of ¥1,695 million, ¥1,412 million and ¥933 million as of December 31, 2021, 2020 and 2019, respectively, and reported under “other noncurrent liabilities” on the consolidated balance sheets. The total amounts of unrecognized tax benefits that would reduce the effective tax rate, if recognized, were ¥9,813 million and ¥8,572 million at December 31, 2021 and 2020, respectively. Although Canon believes its estimates and assumptions of unrecognized tax benefits are reasonable, uncertainty regarding the final determination of tax examination settlements and any related litigation could affect the effective tax rate in a future period. Based on each of the items of which Canon is aware at December 31, 2021, no significant changes to the unrecognized tax benefits are expected within the next twelve months. Canon recognizes interest and penalties accrued related to unrecognized tax benefits in income taxes. Both interest and penalties accrued at December 31, 2021 and 2020, and interest and penalties included in income taxes for the years ended December 31, 2021, 2020 and 2019 were not significant. Canon files income tax returns in Japan and various foreign tax jurisdictions. In Japan, Canon is no longer subject to regular income tax examinations by the tax authority for years before 2021. Canon is also no longer subject to a transfer pricing examination by the tax authority for years before 2021. In other major foreign tax jurisdictions, including the United States and the Netherlands, Canon is no longer subject to income tax examinations by tax authorities for years before 2014 with few exceptions.

Legal Reserve and Retained Earn

Legal Reserve and Retained Earnings	12 Months Ended
	Dec. 31, 2021
Text Block [Abstract]
Legal Reserve and Retained Earnings	13. Legal Reserve and Retained Earnings The Corporation Law of Japan provides that an amount equal to 10% of distributions from retained earnings paid by the Company and its Japanese subsidiaries be appropriated as a legal reserve. No further appropriations are required when the total amount of the additional paid-in paid-in Cash dividends and appropriations to the legal reserve charged to retained earnings for the years ended December 31, 2021, 2020 and 2019 represent dividends paid out during those years and the related appropriations to the legal reserve. Retained earnings at December 31, 2021 did not reflect current year-end The amount available for dividends under the Corporation Law of Japan is based on the amount recorded in the Company’s nonconsolidated books of account in accordance with financial accounting standards of Japan. Such amount was ¥858,455 million at December 31, 2021. Retained earnings at December 31, 2021 included Canon’s equity in undistributed earnings of affiliated companies accounted for by the equity method in the amount of ¥17,858 million.

Other Comprehensive Income (Los

Other Comprehensive Income (Loss)	12 Months Ended
	Dec. 31, 2021
Equity [Abstract]
Other Comprehensive Income (Loss)	14. Other Comprehensive Income (Loss) Changes in accumulated other comprehensive income (loss) for the years ended December 31, 2021, 2020 and 2019 are as follows: Foreign Gains and Pension Total (Millions of yen) Balance at December 31, 2018 (63,815 ) 308 (205,564 ) (269,071 ) Cumulative effects of accounting standard update – adoption of ASU No. 2017-12 — (122 ) — (122 ) Equity transactions with noncontrolling interests and other (424 ) — — (424 ) Other comprehensive income (loss) before reclassifications (31,889 ) (1,723 ) (12,763 ) (46,375 ) Amounts reclassified from accumulated other comprehensive income (loss) (154 ) 650 7,054 7,550 Net change during the year (32,467 ) (1,073 ) (5,709 ) (39,249 ) Balance at December 31, 2019 (96,282 ) (887 ) (211,273 ) (308,442 ) Equity transactions with noncontrolling interests and other (9 ) — — (9 ) Other comprehensive income (loss) before reclassifications (17,355 ) (1,199 ) (7,530 ) (26,084 ) Amounts reclassified from accumulated other comprehensive income (loss) — 2,186 7,560 9,746 Net change during the year (17,364 ) 987 30 (16,347 ) Balance at December 31, 2020 (113,646 ) 100 (211,243 ) (324,789 ) Other comprehensive income (loss) before reclassifications 119,689 (3,330 ) 49,759 166,118 Amounts reclassified from accumulated other comprehensive income (loss) (524 ) 2,336 5,065 6,877 Net change during the year 119,165 (994 ) 54,824 172,995 Balance at December 31, 2021 5,519 (894 ) (156,419 ) (151,794 ) Reclassifications out of accumulated other comprehensive income (loss) for the years ended December 31, 2021, 2020 and 2019 are as follows: Amount reclassified from Year ended Year ended Year ended Affected line items in consolidated statements of income (Millions of yen) Foreign currency translation adjustments (759 ) — — Selling, general and administrative expenses — — (154 ) Other, net 235 — — Income taxes (524 ) — (154 ) Consolidated net income — — — Net income attributable to noncontrolling interests (524 ) — (154 ) Net income attributable to Canon Inc. Gains and losses on derivative instruments 3,285 3,034 661 Net Sales (959 ) (775 ) (2 ) Income taxes 2,326 2,259 659 Consolidated net income 10 (73 ) (9 ) Net income attributable to noncontrolling interests 2,336 2,186 650 Net income attributable to Canon Inc. Pension liability adjustments 7,519 10,082 9,953 Other, net (1,625) (2,484 ) (2,523 ) Income taxes 5,894 7,598 7,430 Consolidated net income (829) (38 ) (376 ) Net income attributable to noncontrolling interests 5,065 7,560 7,054 Net income attributable to Canon Inc. Total amount reclassified, net of tax and noncontrolling interests 6,877 9,746 7,550 * Amounts in parentheses indicate gains in consolidated statements of income. Tax effects allocated to each component of other comprehensive income (loss) and reclassification adjustments, including amounts attributable to noncontrolling interests, are as follows: Years ended December 31 Before-tax Tax (expense) Net-of-tax (Millions of yen) 2021: Foreign currency translation adjustments Amount arising during the year 122,075 (1,112 ) 120,963 Reclassification adjustments for gains and losses realized in net income (759 ) 235 (524 ) Net change during the year 121,316 (877 ) 120,439 Net gains and losses on derivative instruments: Amount arising during the year (4,596 ) 1,298 (3,298 ) Reclassification adjustments for gains and losses realized in net income 3,285 (959 ) 2,326 Net change during the year (1,311 ) 339 (972 ) Pension liability adjustments: Amount arising during the year 68,729 (18,115) 50,614 Reclassification adjustments for gains and losses realized in net income 7,519 (1,625) 5,894 Net change during the year 76,248 (19,740) 56,508 Other comprehensive income (loss) 196,253 (20,278) 175,975 Years ended December 31 Before-tax Tax (expense) Net-of-tax (Millions of yen) 2020: Foreign currency translation adjustments Amount arising during the year (17,583 ) 229 (17,354 ) Reclassification adjustments for gains and losses realized in net income — — — Net change during the year (17,583 ) 229 (17,354 ) Net gains and losses on derivative instruments: Amount arising during the year (1,731 ) 442 (1,289 ) Reclassification adjustments for gains and losses realized in net income 3,034 (775 ) 2,259 Net change during the year 1,303 (333 ) 970 Pension liability adjustments: Amount arising during the year (2,495 ) (3,721 ) (6,216 ) Reclassification adjustments for gains and losses realized in net income 10,082 (2,484 ) 7,598 Net change during the year 7,587 (6,205 ) 1,382 Other comprehensive income (loss) (8,693 ) (6,309 ) (15,002 ) Years ended December 31 Before-tax Tax (expense) Net-of-tax (Millions of yen) 2019: Foreign currency translation adjustments Amount arising during the year (32,396 ) 393 (32,003 ) Reclassification adjustments for gains and losses realized in net income (154 ) — (154 ) Net change during the year (32,550 ) 393 (32,157 ) Net gains and losses on derivative instruments: Amount arising during the year (2,180 ) 453 (1,727 ) Reclassification adjustments for gains and losses realized in net income 661 (2 ) 659 Net change during the year (1,519 ) 451 (1,068 ) Pension liability adjustments: Amount arising during the year (9,916 ) (1,144 ) (11,060 ) Reclassification adjustments for gains and losses realized in net income 9,953 (2,523 ) 7,430 Net change during the year 37 (3,667 ) (3,630 ) Other comprehensive income (loss) (34,032 ) (2,823 ) (36,855 )

Revenue

Revenue	12 Months Ended
	Dec. 31, 2021
Revenue from Contract with Customer [Abstract]
Revenue	15. Revenue Revenue from sales of products of the Printing Business Unit, such as office MFDs, laser printers and inkjet printers, and the Imaging Business Unit, such as digital cameras, is primarily recognized upon shipment or delivery, depending upon when the customer obtains controls of these products. Revenue from sales of equipment of the Medical Business Unit and the Industrial and Others Business Unit that are sold with customer acceptance provisions related to their functionality, including certain medical equipment such as CT systems and MRI systems, and lithography equipment such as semiconductor and FPD lithography equipment, is recognized when the equipment is installed at the customer site and the agreed-upon specifications are objectively satisfied and confirmed. Most of Canon’s service revenue is generated from maintenance service in the products of the Printing Business Unit and the Medical Business Unit which is recognized over time. For the service contracts of the Printing Business Unit, the customer typically pays a variable amount based on usage, a stated fixed fee or a stated base fee plus a variable amount which frequently include the provision of consumables as well as break fix activities. The majority portion of service revenue from the products of the Printing Business Unit is recognized as billed since the invoiced amount directly correlates with the value to the customer of the underlying performance obligation to date. For the service contracts of the Medical Business Unit, the customer typically pays a stated fixed fee for the stand ready maintenance service and revenue is recognized ratably over the contract period. The majority of service arrangements for the products are executed in combination with related products. Transaction prices for products and services need to be allocated to each performance obligation on a relative standalone selling price basis where judgements are required. Canon estimates the standalone selling price using a range of prices that would meet the allocation objective based on all the information that is reasonably available including market conditions and other observable inputs. If transaction prices of the product or service contracts are not within the acceptable range then the revenue is subject to allocation based on the estimated standalone selling prices. Canon recognizes the incremental costs of obtaining a contract as an expense when related products of the Printing Business Unit are sold. Revenue from sales of certain industrial equipment which do not have alternative use and for which Canon has enforceable right to payment to the customers for the performance completed to date is recognized over time with progress towards completion measured using the cost based input method as the basis to recognize revenue and an estimated margin. Provisions for estimated losses on uncompleted contracts are made in the period in which such losses become evident. Changes in job performance, job conditions, estimated margin and final contract settlements may result in revisions to projected costs and revenue and are recognized in the period in which the revisions to estimates are identified and the amounts can be reasonably estimated. Factors that may affect future project costs and margins include, production efficiencies, availability and costs of labor and materials. These factors can impact the accuracy of Canon’s estimates and materially impact future reported revenue and cost of sales. The transaction prices that Canon is entitled to receive in exchange for transferring goods or services to the customer include certain forms of variable consideration, including product discounts, customer promotions and volume-based rebates mainly for the products of the Imaging Business Unit, which are sold predominantly through distributors and retailers. Canon includes estimated amounts in the transaction price only to the extent it is probable that a significant reversal of cumulative revenue recognized will not occur when the uncertainty associated with the variable consideration is resolved. Variable considerations are estimated based upon historical trends and other known factors at the time of sale, and are subsequently adjusted in each period based on current information. In addition, Canon may provide a right of return on its products for a short time period after a sale. These rights are accounted for as variable consideration when determining the transaction price, and accordingly Canon recognizes revenue based on the estimated amount to which Canon expects to be entitled after considering expected returns. Disaggregated revenue by timing is as follows. Disaggregated revenue by business unit, product and geographic area are described in Note 23. Printing Imaging Medical Industrial and Others Corporate Consolidated (Millions of yen) 2021: Revenue recognized at a point in time 1,419,043 646,849 329,323 439,914 (105,126 ) 2,730,003 Revenue recognized over time 519,804 6,683 151,039 105,828 — 783,354 Total 1,938,847 653,532 480,362 545,742 (105,126 ) 3,513,357 Printing Imaging Medical Industrial and Others Corporate Consolidated (Millions of yen) 2020: Revenue recognized at a point in time 1,316,556 534,685 287,849 336,235 (83,094 ) 2,392,231 Revenue recognized over time 487,871 6,629 148,225 125,287 — 768,012 Total 1,804,427 541,314 436,074 461,522 (83,094 ) 3,160,243 Printing Imaging Medical Industrial and Others Corporate Consolidated (Millions of yen) 2019: Revenue recognized at a point in time 1,520,393 651,629 290,702 391,272 (93,180 ) 2,760,816 Revenue recognized over time 572,071 10,077 147,823 102,512 — 832,483 Total 2,092,464 661,706 438,525 493,784 (93,180 ) 3,593,299 * Based on the realignment of Canon’s internal reporting and management structure, from the beginning of 2021, Canon has changed the name and structure of segments to Printing Business Unit, Imaging Business Unit, Medical Business Unit, and Industrial and Others Business Unit. Changes in the disaggregated revenue by timing and by segment for the fiscal year ended December 31, 2020 and 2019 also have been reclassified. Revenue recognized over time includes primarily revenue from maintenance service in the products of the Printing Business Unit and the Medical Business Unit and sales of certain equipment of the Industrial and Others Unit which do not have alternative use and for which Canon has enforceable right to payment to the customers for the performance completed to date. Canon recognizes contract assets primarily for unbilled receivables mainly arising from services contracts for the products of the Printing Business Unit. Contract assets are reclassified to trade receivables when they are billed under the terms of the contract. The difference between the opening and closing balances of contract assets primarily results from the timing difference of Canon’s performance and billing to customers. Contract assets at December 31, 2021 and 2020 were ¥44,722 million and ¥42,752 million, respectively, and are included in prepaid expenses and other current assets in the consolidated balance sheets. Canon typically bills to the customer wh e non-current Remaining performance obligations for products and equipment at December 31, 2021 primarily arise from the sales of certain industrial equipment, amounting to ¥150,833 million, 66% of which is expected to be recognized as revenue within one year and remaining 34% is within two years. Disclosure of remaining performance obligations is not required for the majority of services since the related revenue is recognized on an as billed basis applying the right to invoice practical expedient or is generated from the contracts with original expected duration of less than one year. The portion of fixed maintenance service contract for the products of the Printing Business Unit and the Medical Business Unit with original expected duration of more than one year is approximately 13% of total service revenue and the average remaining period for these fixed contracts as of December 31, 2021 is about two years. Taxes collected from customers and remitted to governmental authorities are excluded from revenues in the consolidated statements of income.

Stock-Based Compensation

Stock-Based Compensation	12 Months Ended
	Dec. 31, 2021
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Stock-Based Compensation	16. Stock-Based Compensation On April 28, 2021, based on the approval of the board of directors, the Company granted stock options to its directors and executive officers to acquire 43,700 shares of common stock. Those to whom stock acquisition rights are granted (the “Holder(s)”) shall be entitled to exercise all the stock acquisition rights together within 10 days (in case the last day is not a business day, the following business day) from after the date when they cease to hold any position as a director or an executive officer of the Company. These option awards have a 30 year exercisable period. The grant-date fair value per share of the stock options granted during the year ended December 31, 2021 was ¥2,227. On May 1, 2020, based on the board of the directors, the Company granted stock options to its directors and executive officers to acquire 88,600 shares of common stock. Those to whom stock acquisition rights are granted (the “Holder(s)”) shall be entitled to exercise all the stock acquisition rights together within 10 days (in case the last day is not a business day, the following business day) from after the date when they cease to hold any position as a director or an executive officer of the Company. These option awards have a 30 year exercisable period. The grant-date fair value per share of the stock options granted during the year ended December 31, 2020 was ¥1,459. On March 25, 2020, based on the board of the directors, the Company granted stock options to its executive officer to acquire 10,300 shares of common stock. The Holder shall be entitled to exercise all the stock acquisition rights together within 10 days (in case the last day is not a business day, the following business day) from after the date when they cease to hold any position as a director or an executive officer of the Company. These option awards have a 30 year exercisable period. The grant-date fair value per share of the stock options granted during the year ended December 31, 2020 was ¥1,703. The compensation cost recognized for these stock options for the years ended December 31, 2021 was ¥97 million and 2020 was ¥147 million and 2019 was ¥265 million, and it is included in selling, general and administrative expenses in the consolidated statements of income. The fair value of the option award was estimated on the date of grant using the Black-Sholes option pricing model that incorporates the assumptions presented below: Year ended December 31, 2021 Year ended December 31, 2020 *1 *2 Expected term of option (in years) 5.0 6.0 6.0 Expected volatility 24.83 % 20.32 % 20.92 % Dividend yield 3.04 % 6.25 % 6.97 % Risk-free interest rate (0.10 %) (0.12 %) (0.17 %) *1 Granted on March 25, 2020 *2 Granted on May 1, 2020 A summary of option activity the Shares Weighted-average exercise price Weighted-average remaining Aggregate (Yen) (Year) (Millions of yen) Outstanding at January 1, 2019 74,000 1 29.3 222 Granted 116,300 1 Exercised (4,500 ) 1 Outstanding at December 31, 2019 185,800 1 29.0 555 Granted 98,900 1 Exercised (37,100 ) 1 Outstanding at December 31, 2020 247,600 1 28.4 324 Granted 43,700 1 Exercised (4,800 ) 1 Outstanding at December 31, 2021 286,500 1 27.8 802 Exercisable at December 31, 2021 286,500 1 27.8 802 The total fair values of shares vested during the years ended December 31, 2021 and 2020 were ¥97 million and ¥147 million, respectively, and 2019 was ¥265 million. Cash received from the exercise of stock options for the years ended December 31, 2021, 2020 and 2019 were not significant.

Net Income Attributable to Cano

Net Income Attributable to Canon Inc. Shareholders per Share	12 Months Ended
	Dec. 31, 2021
Earnings Per Share [Abstract]
Net Income Attributable to Canon Inc. Shareholders per Share	17. Net Income Attributable to Canon Inc. Shareholders per Share A reconciliation of the numerators and denominators of basic and diluted net income attributable to Canon Inc. shareholders per share computations is as follows: Years ended December 31 2021 2020 2019 (Millions of yen) Basic net income attributable to Canon Inc. 214,718 83,318 124,964 Diluted net income attributable to Canon Inc. 214,714 83,315 124,962 (Number of shares) Average common shares outstanding 1,045,632,588 1,049,802,197 1,069,956,767 Effect of dilutive securities: Stock options 277,066 229,691 158,173 Diluted common shares outstanding 1,045,909,654 1,050,031,888 1,070,114,940 (Yen) Net income attributable to Canon Inc. shareholders per share: Basic 205.35 79.37 116.79 Diluted 205.29 79.35 116.77

Derivatives and Hedging Activit

Derivatives and Hedging Activities	12 Months Ended
	Dec. 31, 2021
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivatives and Hedging Activities	18. Derivatives and Hedging Activities Risk management policy Canon operates internationally, exposing it to the risk of changes in foreign currency exchange rates. Derivative financial instruments are comprised principally of foreign exchange contracts utilized by the Company and certain of its subsidiaries to reduce the risk. Canon assesses foreign currency exchange rate risk by continually monitoring changes in the exposures and by evaluating hedging opportunities. Canon does not hold or issue derivative financial instruments for speculative purposes. Canon is also exposed to credit-related losses in the event of non-performance Foreign currency exchange rate risk management Canon’s international operations expose Canon to the risk of changes in foreign currency exchange rates. Canon uses foreign exchange contracts to manage certain foreign currency exchange exposures principally from the exchange of U.S. dollars and euros into Japanese yen. These contracts are primarily used to hedge the foreign currency exposure of forecasted intercompany sales and intercompany trade receivables that are denominated in foreign currencies. In accordance with Canon’s policy, a specific portion of foreign currency exposure resulting from forecasted intercompany sales are hedged using foreign exchange contracts which principally mature within three months. Cash flow hedge Changes in the fair value of derivative financial instruments designated as cash flow hedges, including foreign exchange contracts associated with forecasted intercompany sales, are reported in accumulated other comprehensive income (loss). These amounts are subsequently reclassified into earnings in the same period as the hedged items affect earnings. Substantially all amounts recorded in accumulated other comprehensive income (loss) as of December 31, 2021 are expected to be recognized in net sales over the next twelve months. Changes in the fair value of a foreign exchange contract for the period between the date that the forecasted intercompany sales occur and its maturity date are recognized in earnings. Derivatives not designated as hedges Canon has entered into certain foreign exchange contracts to primarily offset the earnings impact related to fluctuations in foreign currency exchange rates associated with certain assets denominated in foreign currencies. Although these foreign exchange contracts have not been designated as hedges as required in order to apply hedge accounting, the contracts are effective from an economic perspective. The changes in the fair value of these contracts are recorded in earnings immediately. Contract amounts of foreign exchange contracts at December 31, 2021 and 2020 are set forth below: December 31 2021 2020 (Millions of yen) To sell foreign currencies 169,392 137,721 To buy foreign currencies 27,453 27,220 Fair value of derivative instruments in the consolidated balance sheets The following tables present Canon’s derivative instruments measured at gross fair value as reflected in the consolidated balance sheets at December 31, 2021 and 2020. Derivatives designated as hedging instruments Fair value December 31 Balance sheet location 2021 2020 (Millions of yen) Assets: Foreign exchange contracts Prepaid expenses and other current assets 42 426 Liabilities: Foreign exchange contracts Other current liabilities 777 416 Derivatives not designated as hedging instruments Fair value December 31 Balance sheet location 2021 2020 (Millions of yen) Assets: Foreign exchange contracts Prepaid expenses and other current assets 23 107 Liabilities: Foreign exchange contracts Other current liabilities 1,342 809 Effect of derivative instruments in the consolidated statements of income The following tables present the effect of Canon’s derivative instruments in the consolidated statements of income for the years ended December 31, 2021, 2020 and 2019. Derivatives in cash flow hedging relationships Year ended December 31 Gain (loss) Gain (loss) reclassified from Amount Location Amount (Millions of yen) 2021: Foreign exchange contracts (4,596 ) Net sales (3,285 ) 2020: Foreign exchange contracts (1,731 ) Net sales (3,034 ) 2019: Foreign exchange contracts (2,180 ) Net sales (661 ) Derivatives not designated as hedging instruments Gain (loss) recognized in income on derivative Years ended December 31 Location 2021 2020 2019 (Millions of yen) Foreign exchange contracts Other, net (6,099 ) 104 805

Lessee Accounting

Lessee Accounting	12 Months Ended
	Dec. 31, 2021
Leases [Abstract]
Lessee Accounting	19. Lessee Accounting Lease costs are included in cost of sales or selling general and administrative expense in accompanying consolidated statements of income. Supplemental income statement information is as follows: Year ended December 31, 2021 Year ended December 31, 2020 (Millions of yen) Operating lease cost 39,699 40,053 Short-term lease cost 13,961 14,245 Other lease cost 71 120 53,731 54,418 Operating lease cash flow Supplemental cash flow information is as follows. Year ended December 31, 2021 Year ended December 31, 2020 (Millions of yen) Cash paid for amount included in the measurement of lease liabilities Operating cash flows from operating leases 39,879 36,733 Noncash activity – Rights of use assets obtained in exchange for lease liabilities Operating leases 21,588 30,700 Maturity Analysis The following is a schedule by year of the future minimum lease payments under operating leases at December 31, 2021. (Millions of yen) Year ending December 31: 2022 32,941 2023 22,512 2024 15,226 2025 10,816 2026 7,832 Thereafter 11,192 Total future minimum lease payments 100,519 Less Imputed Interest (4,189 ) 96,330 Remaining lease term and discount rate The following is remaining lease term and discount rate under operating leases at December 31, 2021 and 2020. December 31, 2021 December 31, 2020 Weighted-average remaining lease term 54 months 56 months Weighted-average discount rate 2.1% 2.1%

Commitments and Contingent Liab

Commitments and Contingent Liabilities	12 Months Ended
	Dec. 31, 2021
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingent Liabilities	20. Commitments and Contingent Liabilities Commitments At December 31, 2021, commitments outstanding for the purchase of property, plant and equipment approximated ¥76,229 million, and commitments outstanding for the purchase of parts and raw materials approximated ¥249,909 million. Guarantees Canon occupies sales offices and other facilities under lease arrangements accounted for as operating leases. Deposits mainly for restoration made under such arrangements aggregated ¥10,812 million and ¥10,962 million at December 31, 2021 and 2020, respectively, and are included in noncurrent receivables in the accompanying consolidated balance sheets. Canon provides guarantees for its employees, affiliates and other companies. The guarantees for the employees are principally made for their housing loans. The guarantees for affiliates and other companies are made for their lease obligations and bank loans to facilitate financing. Canon would have to perform under a guarantee if the borrower defaults on a payment within the contract terms. The contract terms are 1 year to 15 years in case of employees with housing loans, and 1 year to 5 years in case of affiliates and other companies with lease obligations and bank loans. The maximum amount of undiscounted payments Canon would have had to make in the event of default is ¥2,078 million at December 31, 2021. The carrying amounts of the liabilities recognized for Canon’s obligations as a guarantor under those guarantees at December 31, 2021 were not significant. Canon also offers assurance-type warranties under which it generally guarantees the performance of products delivered and services rendered for a certain period or term. Estimated product warranty costs are recorded at the time revenue is recognized and are included in selling, general and administrative expenses in the accompanying consolidated statements of income. Estimates for accrued product warranty costs are based on historical experience. Accrued product warranty costs are included in accrued expenses in the accompanying consolidated balance sheets and the changes for the years ended December 31, 2021 and 2020 are summarized as follows:​​​​​​​ Years ended December 31 2021 2020 (Millions of yen) Balance at beginning of the year 14,300 15,846 Additions 15,687 11,355 Utilization (11,928 ) (10,657 ) Other (1,110 ) (2,244 ) Balance at end of the year 16,949 14,300 Legal proceedings Canon is involved in various claims and legal actions arising in the ordinary course of business. Canon has recorded provisions for liabilities when it is probable that liabilities have been incurred and the amount of loss can be reasonably estimated. Canon reviews these provisions at least quarterly and adjusts these provisions to reflect the impact of the negotiations, settlements, rulings, advice of legal counsel and other information and events pertaining to a particular case. Based on its experience, although litigation is inherently unpredictable, Canon believes that any damage amounts claimed in outstanding matters are not a meaningful indicator of Canon’s potential liability. In the opinion of management, any reasonably possible range of losses from outstanding matters would not have a material adverse effect on Canon’s consolidated financial position, results of operations, and cash flows.

Disclosures about the Fair Valu

Disclosures about the Fair Value of Financial Instruments and Concentrations of Credit Risk	12 Months Ended
	Dec. 31, 2021
Investments, All Other Investments [Abstract]
Disclosures about the Fair Value of Financial Instruments and Concentrations of Credit Risk	21. Disclosures about the Fair Value of Financial Instruments and Concentrations of Credit Risk Fair value of financial instruments The estimated fair values of Canon’s financial instruments at December 31, 2021 and 2020 are set forth below. The following summary excludes cash and cash equivalents, trade receivables, noncurrent receivables, short-term loans, trade payables and accrued expenses, and the fair values of these instruments approximate their carrying amounts. The summary also excludes investments and derivative instruments which are disclosed in Note 2 and Note 22, and Note 18, respectively. December 31 2021 2020 Carrying Estimated Carrying Estimated (Millions of yen) Long-term debt, including current installments (177,410 ) (177,343 ) (346,317 ) (346,275 ) The following methods and assumptions are used to estimate the fair value in the above table. Long-term debt Canon’s long-term debt instruments are classified as Level 2 instruments and valued based on the present value of future cash flows associated with each instrument discounted using current market borrowing rates for similar debt instruments of comparable maturity. The levels are more fully described in Note 22. Limitations of fair value estimates Fair value estimates are made at a specific point in time, based on relevant market information and information about the financial instruments. These estimates are subjective in nature and involve uncertainties and matters of significant judgment and therefore cannot be determined with precision. Changes in assumptions could significantly affect the estimates. Concentrations of credit risk No single customer accounted for more than 10 percent of consolidated trade receivables as of December 31, 2021 or 2020.

Fair Value Measurements

Fair Value Measurements	12 Months Ended
	Dec. 31, 2021
Fair Value Disclosures [Abstract]
Fair Value Measurements	22. Fair Value Measurements Fair value is the price that would be received to sell an asset or paid to transfer a liability (an exit price) in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants at the measurement date. A three-level fair value hierarchy that prioritizes the inputs used to measure fair value is as follows: Level 1 – Inputs are quoted prices in active markets for identical assets or liabilities. Level 2 – Inputs are quoted prices for similar assets or liabilities in active markets, quoted prices for identical or similar assets or liabilities in markets that are not active, inputs other than quoted prices that are observable, and inputs that are derived principally from or corroborated by observable market data by correlation or other means. Level 3 – Inputs are derived from valuation techniques in which one or more significant inputs or value drivers are unobservable, which reflect the reporting entity’s own assumptions about the assumptions that market participants would use in establishing a price. Assets and liabilities measured at fair value on a recurring basis The following tables present Canon’s assets and liabilities that are measured at fair value on a recurring basis consistent with the fair value hierarchy at December 31, 2021 and 2020. December 31, 2021 Level 1 Level 2 Level 3 Total (Millions of yen) Assets: Cash and cash equivalents — 500 — 500 Investments: Fund trusts and others 281 328 — 609 Equity securities 28,640 — — 28,640 Prepaid expenses and other current assets: Derivatives — 65 — 65 Total assets 28,921 893 — 29,814 Liabilities: Other current liabilities: Derivatives — 2,119 — 2,119 Total liabilities — 2,119 — 2,119 December 31, 2020 Level 1 Level 2 Level 3 Total (Millions of yen) Assets: Cash and cash equivalents — 500 — 500 Investments: Fund trusts and others 284 248 — 532 Equity securities 18,683 — — 18,683 Prepaid expenses and other current assets: Derivatives — 533 — 533 Total assets 18,967 1,281 — 20,248 Liabilities: Other current liabilities: Derivatives — 1,225 — 1,225 Total liabilities — 1,225 — 1,225 Level 1 investments are comprised principally of Japanese equity securities, which are valued using an unadjusted quoted market price in active markets with sufficient volume and frequency of transactions. Level 2 cash and cash equivalents are valued based on market approach, using quoted prices for identical assets in markets that are not active. Assets and liabilities measured at fair value on a recurring basis (continued) Derivative financial instruments are comprised of foreign exchange contracts. Level 2 derivatives are valued using quotes obtained from counterparties or third parties, which are periodically validated by pricing models using observable market inputs, such as foreign currency exchange rates and interest rates, based on market approach. Assets and liabilities measured at fair value on a nonrecurring basis There were no significant assets or liabilities to be measured at fair value on a nonrecurring basis during the year ended December 31, 2021 and 2020.

Segment Information

Segment Information	12 Months Ended
	Dec. 31, 2021
Segment Reporting [Abstract]
Segment Information	23. Segment Information Canon reports in four segments: the Printing Business Unit, the Imaging Business Unit, the Medical Business Unit, and the Industrial and Others Business Unit, which are based on the organizational structure and information reviewed by Canon’s management to evaluate results and allocate resources. Based on the realignment of Canon’s internal reporting and management structure, from 2021, Canon has changed the name and structure of segments from Office Business Unit, Imaging System Business Unit, Medical System Business Unit and Industry and Others Business Unit to Printing Business Unit, Imaging Business Unit, Medical Business Unit, and Industrial and Others Business Unit. Major changes include moving Inkjet printers from Imaging System Business Unit to the Printing Business Unit, the same business unit as Office multifunction devices (MFDs) and Laser multifunction printers (MFPs), and moving Network cameras from Industry and Others Business Unit to the Imaging Business Unit, the same business unit as Interchangeable-lens digital cameras. Prior period amounts also have been reclassified. The primary products included in each segment are as follows: Printing Business Unit: Office multifunction devices (MFDs) / Document solutions/ Laser multifunction printers (MFPs) / Laser printers /Inkjet printers / Image scanners / Calculators / Digital continuous feed presses / Digital sheet-fed Imaging Business Unit: Interchangeable-lens digital cameras / Interchangeable lenses / Digital compact cameras /Compact photo printers / Network cameras / Video management software / Video content analytics software / Digital camcorders / Digital cinema cameras / Broadcast equipment /Multimedia projectors Medical Business Unit: Computed tomography (CT) systems / Diagnostic ultrasound systems / Diagnostic X-ray Industrial and Others Business Unit: Semiconductor lithography equipment / FPD (Flat panel display) lithography equipment /OLED display manufacturing equipment / Vacuum thin-film deposition equipment / Die bonders / Handy terminals / Document scanners The accounting policies of the segments are substantially the same as those described in the significant accounting policies in Note 1. Canon evaluate results and allocate resources for each segment based on income before income taxes. Information about operating results and assets for each segment as of and for the years ended December 31, 2021, 2020 and 2019 is as follows: Printing Imaging Medical Industrial and Corporate and Consolidated (Millions of yen) 2021: Net sales: External customers 1,934,012 651,494 480,029 449,915 (2,093 ) 3,513,357 Intersegment 4,835 2,038 333 95,827 (103,033 ) — Total 1,938,847 653,532 480,362 545,742 (105,126 ) 3,513,357 Operating cost and expenses 1,713,154 574,814 450,942 501,434 (8,905 ) 3,231,439 Operating profit 225,693 78,718 29,420 44,308 (96,221 ) 281,918 Other income (deductions) 7,259 (256 ) 4,876 342 8,567 20,788 Income before income taxes 232,952 78,462 34,296 44,650 (87,654 ) 302,706 Total assets 1,009,922 236,143 311,247 345,883 2,847,693 4,750,888 Depreciation and amortization 69,549 21,840 12,435 27,677 89,745 221,246 Capital expenditures 63,609 12,069 11,888 25,759 65,675 179,000 2020: Net sales: External customers 1,800,898 539,560 435,368 385,177 (760 ) 3,160,243 Intersegment 3,529 1,754 706 76,345 (82,334 ) — Total 1,804,427 541,314 436,074 461,522 (83,094 ) 3,160,243 Operating cost and expenses 1,657,319 535,584 410,830 441,006 4,957 3,049,696 Operating profit 147,108 5,730 25,244 20,516 (88,051 ) 110,547 Other income (deductions) 5,076 (778 ) 300 1,171 13,964 19,733 Income before income taxes 152,184 4,952 25,544 21,687 (74,087 ) 130,280 Total assets 913,931 239,605 286,749 348,614 2,836,715 4,625,614 Depreciation and amortization 69,725 22,201 11,781 28,720 95,398 227,825 Capital expenditures 56,613 12,540 7,244 21,276 64,054 161,727 2019: Net sales: External customers 2,089,024 660,105 437,456 405,114 1,600 3,593,299 Intersegment 3,440 1,601 1,069 88,670 (94,780 ) — Total 2,092,464 661,706 438,525 493,784 (93,180 ) 3,593,299 Operating cost and expenses* 1,908,436 634,773 411,781 465,197 (1,308 ) 3,418,879 Operating profit 184,028 26,933 26,744 28,587 (91,872 ) 174,420 Other income (deductions) 6,066 905 539 — 13,563 21,073 Income before income taxes 190,094 27,838 27,283 28,587 (78,309 ) 195,493 Total assets 1,002,778 288,545 273,525 310,110 2,896,960 4,771,918 Depreciation and amortization 74,958 24,561 11,760 29,086 96,962 237,327 Capital expenditures 61,789 18,929 7,074 28,436 95,000 211,228 * During 2019, the Company implemented a restructuring plan centered in Europe with the goal of reorganizing sales structure and improving profitability mainly in the Printing Business Unit. The employee severance charges in the Printing Business Unit under the plan for the year ended December 31, 2019 were ¥15,656 million and most of the charges are included in selling, general and administrative expenses in the consolidated statements of income. The restructuring charges for the years ended December 31, 2021 and 2020 were not significant. Intersegment sales are recorded at the same prices used in transactions with third parties. Expenses not directly associated with specific segments are allocated based on the most reasonable measures applicable. Corporate expenses include certain corporate research and development expenses. Amortization costs of identified intangible assets resulting from the purchase price allocation of Toshiba Medical Systems Corporation (currently, Canon Medical Systems Corporation) are also included in corporate expenses. Segment assets are based on those directly associated with each segment. Corporate assets primarily consist of cash and cash equivalents, investments, deferred tax assets, goodwill, identified intangible assets from acquisitions and corporate properties. Capital expenditures represent the additions to property, plant and equipment and intangible assets measured on an accrual basis. Information about sales by product and service to external customers for each segment for the years ended December 31, 2021, 2020 and 2019 is as follows: Years ended December 31 2021 2020 2019 (Millions of yen) Printing Office multifunction devices 477,000 455,357 573,297 Office others 279,366 267,123 292,378 Office 756,366 722,480 865,675 Laser printers 560,159 502,157 624,597 Inkjet printers and Others 328,932 326,041 296,622 Prosumer 889,091 828,198 921,219 Production 288,555 250,220 302,130 Total 1,934,012 1,800,898 2,089,024 Imaging Cameras 432,885 347,240 466,306 Network cameras and Others 218,609 192,320 193,799 Total 651,494 539,560 660,105 Medical Diagnostic equipment 480,029 435,368 437,456 Industrial and Others Lithography equipment 213,699 142,516 157,160 Industrial equipment 112,274 126,762 107,281 Others 123,942 115,899 140,673 Total 449,915 385,177 405,114 Corporate (2,093 ) (760 ) 1,600 Consolidated 3,513,357 3,160,243 3,593,299 Based on the realignment of Canon’s internal reporting and management structure, from the beginning of 2021, Canon has changed products category. Production includes Digital continuous feed presses, Digital sheet-fed Information by major geographic area as of and for the years ended December 31, 2021, 2020 and 2019 is as follows: 2021 2020 2019 (Millions of yen) Net sales: Japan 830,378 806,305 872,534 Americas 968,839 852,451 1,029,078 Europe 894,898 795,616 882,480 Asia and Oceania 819,242 705,871 809,207 Total 3,513,357 3,160,243 3,593,299 Long-lived assets: Japan 986,638 1,011,109 1,053,074 Americas 152,137 133,648 148,669 Europe 158,297 175,516 191,050 Asia and Oceania 141,915 143,265 159,217 Total 1,438,987 1,463,538 1,552,010 Net sales are attributed to areas based on the location where the products are shipped and the services are performed to the customers. Other than in Japan and the United States, Canon does not conduct business in any individual country in which its sales in that country exceed 10% of consolidated net sales. Net sales in the United States were ¥907,909 million, ¥801,376 million and ¥958,442 million for the years ended December 31, 2021, 2020 and 2019, respectively. Long-lived right-of-use

Subsequent Event

Subsequent Event	12 Months Ended
	Dec. 31, 2021
Subsequent Events [Abstract]
Subsequent Event	24. Subsequent Event On January 5, 2022, Canon borrowed ¥70,000 million under its existing overdraft facilities with Mizuho Bank, Ltd. and MUFG Bank, Ltd. for required operating funds. Additionally, on March 16, 2022, Canon borrowed ¥30,000 million under its existing overdraft facilities with Mizuho Bank, Ltd. and MUFG Bank, Ltd. for required operating funds. The overdraft facilities bear interest at a rate equal to a base rate plus a spread.

Schedule II Valuation and Quali

Schedule II Valuation and Qualifying Accounts	12 Months Ended
	Dec. 31, 2021
SEC Schedule, 12-09, Valuation and Qualifying Accounts [Abstract]
Schedule II Valuation and Qualifying Accounts	Schedule II Valuation and Qualifying Accounts Balance at Addition- Deduction Translation and other Balance (Millions of yen) Year ended December 31, 2021: Allowance for credit losses Trade receivables 11,645 1,857 (1,540 ) 532 12,494 Finance receivables 3,068 2,331 (2,157 ) 549 3,791 Year ended December 31, 2020: Allowance for credit losses Trade receivables 10,359 3,419 (1,983 ) (150 ) 11,645 Finance receivables 2,627 2,351 (2,199 ) 289 3,068 Year ended December 31, 2019: Allowance for credit losses Trade receivables 11,477 1,840 (2,189 ) (769 ) 10,359 Finance receivables 2,675 1,495 (1,653 ) 110 2,627

Basis of Presentation and Sig_2

Basis of Presentation and Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2021
Accounting Policies [Abstract]
Description of Business	(a) Description of Business Canon Inc. (the “Company”) and its subsidiaries (collectively “Canon”) is one of the world’s leading manufacturers of office multi-function devices (“MFDs”), laser printers, inkjet printers, cameras, medical equipment and lithography equipment. Products of the Printing Business Unit consist mainly of office MFDs, document solutions, laser multifunction printers (“MFPs”), laser printers, inkjet printers, image scanners, calculators, digital continuous feed presses, digital sheet-fed X-ray Canon sells laser printers on an OEM basis to HP Inc.; such sales constituted 11.6%, 11.4% and 13.0% of consolidated net sales for the years ended December 31, 2021, 2020 and 2019, respectively, and are included in the Printing Business Unit. Canon’s manufacturing operations are conducted primarily at 29 plants in Japan and 13 overseas plants which are located in countries and regions such as the United States, Germany, France, the Netherlands, Taiwan, China, Malaysia, Thailand, Vietnam and Philippines.
Basis of Presentation	(b) Basis of Presentation The Company and its domestic subsidiaries maintain their books of account in conformity with financial accounting standards of Japan. Foreign subsidiaries maintain their books of account in conformity with financial accounting standards of the countries of their domicile. Certain adjustments and reclassifications have been incorporated in the accompanying consolidated financial statements to conform with U.S. generally accepted accounting principles (“U.S. GAAP”). These adjustments were not recorded in the statutory books of account. Canon has separated the presentation of allowance for credit losses from the related receivable balances which are included in trade receivables, prepaid expenses and other current assets, and other assets in the accompanying consolidated balance sheets, from 2021. Consolidated balance sheet for the year ended December 31, 2020 has also been reclassified. Canon has also changed the presentation of “Short-term loans related to financial services” separated from “Short-term loans and current portion of long-term debt” in the consolidated balance sheets from 2021. Further, Canon has separated the presentation of “(Decrease) increase in short-term loans related to financial services, net” from “(Decrease) increase in short-term loans, net” and included the presentation of “(Decrease) increase in short-term loans, net” in “Cash flows from financing activities: Other, net” in the consolidated statements of cash flows from 2021. These changes were made to enhance the presentation of the Company’s short-term borrowings for the users of the consolidated financial statements. To conform with the current year change in the presentation, the consolidated balance sheet for the year ended December 31, 2020 and the consolidated statement of cash flows for the years ended December 31, 2020 and 2019 have been reclassified.
Principles of Consolidation	(c) Principles of Consolidation The consolidated financial statements include the accounts of the Company, its majority owned subsidiaries and those variable interest entities where the Company or its consolidated subsidiaries are the primary beneficiaries. All significant intercompany balances and transactions have been eliminated.
Use of Estimates	(d) Use of Estimates The preparation of the consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and the disclosure of contingent assets and liabilities at the date of the consolidated financial statements and the reported amounts of revenues and expenses during the period. Significant estimates and assumptions are reflected in valuation and disclosure of accounts including: revenue recognition, allowance for credit losses, inventories, long-lived assets, leases, goodwill and other intangible assets with indefinite useful lives, environmental liabilities, deferred tax assets, uncertain tax positions, employee retirement and severance benefit obligations and business combinations. Actual results could differ materially from those estimates. In addition, new waves of COVID-19 COVID-19 COVID-19.
Translation of Foreign Currencies	(e) Translation of Foreign Currencies Assets and liabilities of the Company’s subsidiaries located outside Japan with functional currencies other than Japanese yen are translated into Japanese yen at the rates of exchange in effect at the balance sheet date. Income and expense items are translated at the average exchange rates prevailing during the year. Gains and losses resulting from translation of financial statements are excluded from earnings and are reported in other comprehensive income (loss). Gains and losses resulting from foreign currency transactions and translation of assets and liabilities denominated in foreign currencies are included in other income (deductions) in the consolidated statements of income. Foreign currency exchange gains and losses were net losses of ¥21,746 million, ¥4,451 million and ¥4,236 million for the years ended December 31, 2021, 2020 and 2019, respectively.
Cash Equivalents	(f) Cash Equivalents All highly liquid investments acquired with original maturities of three months or less are considered to be cash equivalents. Certain debt securities with original maturities of less than three months, classified as available-for-sale
Investments	(g) Investments Investments consist primarily of time deposits with original maturities of more than three months, debt and equity securities and investments in affiliated companies. Canon classifies investments in debt securities as held-to-maturity available-for-sale Available-for-sale available-for-sale Held-to-maturity Available-for-sale available-for-sale available-for-sale Canon measures non-marketable Realized gains and losses are determined by the average cost method and reflected in earnings. Investments in affiliated companies over which Canon has the ability to exercise significant influence, but does not hold a controlling financial interest, are accounted for by the equity method.
Allowance for credit losses	(h) Allowance for credit losses Allowance for credit losses for trade and finance receivables is maintained for all customers based on ASC 326 “Financial Instruments—Credit Losses”, considering various factors, including aging analysis, macroeconomic conditions and historical experience. An additional reserve for individual accounts is recorded when Canon becomes aware of a customer’s inability to meet its financial obligations, such as in the case of bankruptcy filings. If circumstances related to customers change, estimates of the recoverability of receivables would be further adjusted. When all collection options are exhausted including legal recourse, the accounts or portions thereof are deemed to be uncollectable and charged against the allowance.
Inventories	(i) Inventories Inventories are stated at the lower of cost or net realizable value. Cost is determined by the average method for domestic inventories and principally by the first-in, first-out
Impairment of Long-Lived Assets	(j) Impairment of Long-Lived Assets Long-lived assets, such as property, plant and equipment, and acquired intangible assets subject to amortization, are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable. Recoverability of assets to be held and used is measured by a comparison of the carrying amount of the asset and the estimated undiscounted future cash flows expected to be generated by the asset. If the carrying amount of the asset exceeds its estimated sum of undiscounted future cash flows, an impairment charge is recognized in the amount by which the carrying amount of the asset exceeds the fair value of the asset. Assets to be disposed of by sale are reported at the lower of the carrying amount or fair value less costs to sell, and are no longer depreciated.
Property, Plant and Equipment, net	(k) Property, Plant and Equipment, net Property, plant and equipment are stated at cost less accumulated depreciation. Depreciation is calculated principally by the declining-balance method, except for certain assets which are depreciated by the straight-line method over the estimated useful lives of the assets. The depreciation period ranges from 3 years to 60 years for buildings and 1 year to 20 years for machinery and equipment.
Leases	(l) Leases As for lessor accounting, Canon provides leasing arrangements to its customers primarily for the sale of office products. Revenue from the sale of these products under sales-type leases is recognized at the inception of the lease. Interest income on sales-type leases and direct-financing leases is recognized over the life of each respective lease using the interest method. Leases not qualifying as sales-type leases or direct-financing leases are accounted for as operating leases and related revenue is recognized ratably over the lease term. When product leases are bundled with maintenance contracts, revenue is allocated based upon the estimated standalone selling prices of the lease and non-lease non-lease As for lessee accounting, Canon has operating and finance leases for various assets including office buildings, warehouses, employees’ accommodations, and vehicles. Canon determines if an arrangement is a lease at the inception of each contract. Some of the contracts include options to extend or to terminate the lease. Canon takes such options into account to determine the lease term when it is reasonably certain that it will exercise these options. Canon’s lease arrangements do not contain material residual value guarantees or material restrictive covenants. As a rate implicit in the most of Canon’s leases cannot be determined, Canon uses incremental borrowing rates based on the information available at commencement to determine the present values of lease payments. Canon has lease contracts with lease and non-lease components, which are accounted for separately. Canon allocates the consideration in the lease contract to the lease and non-lease components based upon the estimated standalone prices. Costs associated with operating lease assets are recognized on a straight-line basis over the term of the lease.
Goodwill and Other Intangible Assets	(m) Goodwill and other intangible assets Goodwill and other intangible assets with indefinite useful lives are not amortized, but are instead tested for impairment annually in the fourth quarter of each year, or more frequently if indicators of potential impairment exist. All goodwill is assigned to the reporting unit or units that benefit from the synergies arising from each business combination. If the carrying amount assigned to the reporting unit exceeds the fair value of the reporting unit, Canon recognizes an impairment charge in an amount equal to that excess, limited to the total amount of goodwill allocated to that reporting unit. Intangible assets with finite useful lives consist primarily of software, trademarks, patents and developed technology, license fees and customer relationships, which are amortized using the straight-line method. The estimated useful lives of software are from 3 years to 8 years, trademarks are 15 years, patents and developed technology are from 5 years to 21 years, license fees are 8 years, and customer relationships are from 7 years to 15 years. Certain costs incurred in connection with developing or obtaining internal-use internal-use In addition, Canon capitalizes the cost which was incurred subsequent to the stage of assuring the technological feasibility of the software for marketing purposes either developed or acquired.
Environmental Liabilities	(n) Environmental Liabilities Liabilities for environmental remediation and other environmental costs are accrued when environmental assessments or remedial efforts are probable and the costs can be reasonably estimated, and are included in other noncurrent liabilities in the consolidated balance sheets. Such liabilities are adjusted as further information develops or circumstances change. Costs of future obligations are not discounted to their present values.
Income Taxes	(o) Income Taxes Deferred tax assets and liabilities are recognized for the estimated future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases and operating loss and tax credit carryforwards. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which those temporary differences are expected to be recovered or settled. The effect on deferred tax assets and liabilities of a change in tax rates is recognized in income in the period that includes the enactment date. Canon records a valuation allowance to reduce the deferred tax assets to the amount that is more likely than not realizable. Canon recognizes the financial statement effects of tax positions when it is more likely than not, based on the technical merits, that the tax positions will be sustained upon examination by the tax authorities. Benefits from tax positions that meet the more-likely-than-not largest amount of benefit that is greater than 50% likely of being realized upon settlement. Interest and penalties accrued related to unrecognized tax benefits are included in income taxes in the consolidated statements of income.
Stock-Based Compensation	(p) Stock-Based Compensation Canon measures stock-based compensation cost at the grant date, based on the fair value of the award, and recognizes the cost on a straight-line basis over the requisite service period, which is the vesting period.
Net Income Attributable to Canon Inc. Stockholders per Share	(q) Net Income Attributable to Canon Inc. Shareholders per Share Basic net income attributable to Canon Inc. shareholders per share is computed by dividing net income attributable to Canon Inc. by the weighted-average number of common shares outstanding during each year. Diluted net income attributable to Canon Inc. shareholders per share includes the effect from potential issuances of common stock based on the assumptions that all stock options were exercised.
Revenue Recognition	(r) Revenue Recognition Canon generates revenue through the sale of products of the Printing Business Unit, the Imaging Business Unit, the Medical Business Unit and the Industrial and Others Business Unit, supplies and related services under separate contractual arrangements. Revenue is recognized when, or as, control of promised goods or services transfers to customers in an amount that reflects the consideration to which Canon expects to be entitled in exchange for transferring these goods or services. For further information, please refer to Note 15.
Research and Development Costs	(s) Research and Development Costs Research and development costs are expensed as incurred.
Advertising Costs	(t) Advertising Costs Advertising costs are expensed as incurred. Advertising expenses were ¥36,812 million, ¥31,273 million and ¥46,665 million for the years ended December 31, 2021, 2020 and 2019, respectively.
Shipping and Handling Costs	(u) Shipping and Handling Costs Shipping and handling costs totaled ¥53,347 million, ¥47,721 million and ¥51,718 million for the years ended December 31, 2021, 2020 and 2019, respectively, and are included in selling, general and administrative expenses in the consolidated statements of income.
Derivative Financial Instruments	(v) Derivative Financial Instruments All derivatives are recognized at fair value and are included in prepaid expenses and other current assets, or other current liabilities in the consolidated balance sheets. Canon uses and designates certain derivatives as a hedge of a forecasted transaction or the variability of cash flows to be received or paid related to a recognized asset or liability (“cash flow” hedge). Canon formally documents all relationships between hedging instruments and hedged items, as well as its risk-management objective and strategy for undertaking various hedge transactions. Canon also formally assesses, both at the hedge’s inception and on an ongoing basis, whether the derivatives that are used in hedging transactions are highly effective in offsetting changes in cash flows of hedged items. When it is determined that a derivative is not highly effective as a hedge or that it has ceased to be a highly effective hedge, Canon discontinues hedge accounting prospectively. Changes in the fair value of a derivative that is designated and qualifies as a cash flow hedge are recorded in other comprehensive income (loss), until earnings are affected by the variability in cash flows of the hedged item, and reclassified in the same income statement line item in which the earnings effect of the hedged item is reported. Canon also uses certain derivative financial instruments which are not designated as hedges. The changes in fair values of these derivative financial instruments are immediately recorded in earnings. Canon classifies cash flows from derivatives as cash flows from operating activities in the consolidated statements of cash flows.
Guarantees	(w) Guarantees Canon recognizes, at the inception of a guarantee, a liability for the fair value of the obligation it has undertaken in issuing guarantees.
Recent Accounting Guidance	(x) Recent Accounting Guidance Canon evaluates all recently issued accounting pronouncements applicable to its consolidated financial statements. No new accounting pronouncement issued or effective has had, or is expected to have, a material impact on Canon’s consolidated financial statements.
Correction of an Immaterial Error	(y) Correction of an Immaterial Error During the year ended December 31, 2020, Canon corrected an error in its previously issued consolidated financial statements related to accounting for the Company and domestic subsidiaries’ compensated absence carryforward in accordance with ASC 710 “Compensation.” In evaluating whether the previously issued consolidated financial statements were materially misstated for the annual periods prior to December 31, 2020, Canon applied the guidance of ASC 250, “Accounting Changes and Error Corrections,” SEC Staff Accounting Bulletin (“SAB”) Topic 1.M “Assessing Materiality” and SAB Topic 1.N “Considering the Effects of Prior Period Misstatements when Quantifying Misstatements in Current Year Financial Statements,” and concluded that the effect of the error on prior period financial statements was immaterial; however, the cumulative effect of correcting the prior period misstatements in the year ended December 31, 2020 would have been material to the December 31, 2020 consolidated financial statements. As a result, Canon previously revised its consolidated financial statements as follows: Consolidated statement of income as revised in 2020 Year ended December 31, 2019 As revised As previously (Millions of yen) Selling, general and administrative expenses 1,137,110 1,136,863 Operating profit 174,420 174,667 Income before income taxes 195,493 195,740 Income taxes 56,146 56,223 Consolidated net income 139,347 139,517 Less: Net income attributable to noncontrolling interests 14,383 14,412 Net income attributable to Canon Inc. 124,964 125,105 (Yen) Net income attributable to Canon Inc. shareholders per share: Basic 116.79 116.93 Diluted 116.77 116.91 Consolidated statement of comprehensive income as revised in 2020 Year ended December 31, 2019 As revised As previously (Millions of yen) Consolidated net income 139,347 139,517 Less: Comprehensive income attributable to noncontrolling interests 16,353 16,382 Comprehensive income (loss) attributable to Canon Inc. 86,139 86,280 Consolidated statement of cash flows as revised in 2020 Year ended December 31, 2019 As revised As previously (Millions of yen) Consolidated net income 139,347 139,517 Increase in accrued expenses 9,738 9,491 Deferred income taxes (6,523 ) (6,446 ) The consolidated statement of equity has been revised, accordingly.

Basis of Presentation and Sig_3

Basis of Presentation and Significant Accounting Policies (Tables)	12 Months Ended
	Dec. 31, 2021
Accounting Policies [Abstract]
Schedule of Consolidated Statement of Income	Consolidated statement of income as revised in 2020 Year ended December 31, 2019 As revised As previously (Millions of yen) Selling, general and administrative expenses 1,137,110 1,136,863 Operating profit 174,420 174,667 Income before income taxes 195,493 195,740 Income taxes 56,146 56,223 Consolidated net income 139,347 139,517 Less: Net income attributable to noncontrolling interests 14,383 14,412 Net income attributable to Canon Inc. 124,964 125,105 (Yen) Net income attributable to Canon Inc. shareholders per share: Basic 116.79 116.93 Diluted 116.77 116.91
Schedule of Consolidated Statement of Comprehensive Income	Consolidated statement of comprehensive income as revised in 2020 Year ended December 31, 2019 As revised As previously (Millions of yen) Consolidated net income 139,347 139,517 Less: Comprehensive income attributable to noncontrolling interests 16,353 16,382 Comprehensive income (loss) attributable to Canon Inc. 86,139 86,280
Schedule of Consolidated Statement of Cash Flows	Consolidated statement of cash flows as revised in 2020 Year ended December 31, 2019 As revised As previously (Millions of yen) Consolidated net income 139,347 139,517 Increase in accrued expenses 9,738 9,491 Deferred income taxes (6,523 ) (6,446 )

Investments (Tables)

Investments (Tables)	12 Months Ended
	Dec. 31, 2021
Investments, Debt and Equity Securities [Abstract]
Schedule of Held-to-maturity debt securities included in short-term investments	Held-to-maturity debt securities included in short-term investments at December 31, 2021 are as follows: Carrying amount Estimated fair value Difference (Millions of yen) Due within one year 2,164 2,167 3
Schedule of unrealized and Realized Gains and Losses Equity Securities	The unrealized and realized gains and losses related to equity securities for the years ended December 31, 2021, 2020 and 2019 are as follows: Years ended December 31 2021 2020 2019 (Millions of yen) Net gains and (losses) recognized during the period on equity securities 8,958 1,959 2,148 Less: Net gains and (losses) recognized during the period on equity securities sold during the period 467 477 (76 ) Unrealized gains and (losses) recognized during the period on equity securities still held at December 31 8,491 1,482 2,224
Schedule of Investments in Affiliated Companies	Investments in affiliated companies accounted for by the equity method are as follows: Years ended December 31 2021 Ownership percentage 2021 2020 (Millions of yen, except percentage data) Canon Korea Inc. 50 % 11,627 10,719 Others — 10,398 8,915 — 22,025 19,634

Trade Receivables (Tables)

Trade Receivables (Tables)	12 Months Ended
	Dec. 31, 2021
Receivables [Abstract]
Schedule of Trade Receivables	Trade receivables are summarized as follows: December 31 2021 2020 (Millions of yen) Notes 28,616 34,922 Accounts 493,816 511,849 Trade receivables 522,432 546,771 Less allowance for credit losses (12,494 ) (11,645 ) 509,938 535,126

Inventories (Tables)

Inventories (Tables)	12 Months Ended
	Dec. 31, 2021
Inventory Disclosure [Abstract]
Schedule of Inventories	Inventories are summarized as follows: December 31 2021 2020 (Millions of yen) Finished goods 395,381 352,513 Work in process 199,153 160,696 Raw materials 56,034 49,598 650,568 562,807

Property, Plant and Equipment (

Property, Plant and Equipment (Tables)	12 Months Ended
	Dec. 31, 2021
Property, Plant and Equipment [Abstract]
Schedule of Property, Plant and Equipment	Property, plant and equipment are stated at cost less accumulated depreciation and are summarized as follows: December 31 2021 2020 (Millions of yen) Land 276,306 270,308 Buildings 1,728,811 1,687,921 Machinery and equipment 1,849,271 1,806,185 Construction in progress 43,283 37,324 Finance right-of-use 6,533 6,048 Cost 3,904,204 3,807,786 Less accumulated depreciation (2,862,801 ) (2,770,106 ) Property, plant and equipment, net 1,041,403 1,037,680

Lessor Accounting (Tables)

Lessor Accounting (Tables)	12 Months Ended
	Dec. 31, 2021
Leases [Abstract]
Summary of lease income	Years ended December 31 2021 2020 (Millions of yen) Lease income – sales-type and direct financing leases Revenue at lease commencement 84,895 92,133 Interest income on lease receivables 18,351 18,594 103,246 110,727 Lease income – operating leases 27,122 23,878 Variable lease income 5,277 5,343 135,645 139,948
Components of Finance Receivables	The components of the finance receivables, which are included in prepaid expenses and other current assets, and other assets in the accompanying consolidated balance sheets, are as follows: December 31 2021 2020 (Millions of yen) Total minimum lease payments receivable 366,051 337,265 Unguaranteed residual values 12,192 11,459 Executory costs — — Unearned income (31,619 ) (29,541 ) 346,624 319,183 Less allowance for credit losses (3,791 ) (3,068 ) 342,833 316,115 Less current portion (119,902 ) (108,837 ) 222,931 207,278
Activity in Allowance for Credit Losses	The activities in the allowance for credit losses are as follows: Years ended December 31 2021 2020 (Millions of yen) Balance at beginning of year 3,068 2,627 Charge-offs (2,157 ) (2,199 ) Provision 2,331 2,351 Translation adjustments and other 549 289 Balance at end of year 3,791 3,068
Future Minimum Lease Payments to be Received under Financing Leases and Noncancelable Operating Leases	The following is a schedule by year of the future minimum lease payments to be received under finance leases and non-cancellable Financing Operating (Millions of yen) Year ending December 31: 2022 131,113 11,578 2023 99,168 7,168 2024 68,241 4,914 2025 41,600 2,972 2026 18,550 1,471 Thereafter 7,379 1,402 366,051 29,505

Acquisitions (Tables)

Acquisitions (Tables)	12 Months Ended
	Dec. 31, 2021
Summary of Fair Values of Assets Acquired and Liabilities Assumed at Acquisition Date	The final allocation of the purchase price to the assets acquired and the liabilities assumed on the acquisition date was as follows: (Millions of yen) Current assets 4,043 Intangible assets 8,955 Goodwill 28,826 Others 389 Assets acquired 42,213 Liabilities assumed 5,350 Net assets acquired 36,863

Goodwill and Other Intangible_2

Goodwill and Other Intangible Assets (Tables)	12 Months Ended
	Dec. 31, 2021
Goodwill and Intangible Assets Disclosure [Abstract]
Components of Intangible Assets Subject to Amortization	The components of intangible assets subject to amortization at December 31, 2021 and 2020 were as follows: December 31, 2021 December 31, 2020 Gross Accumulated Gross Accumulated (Millions of yen) Software 399,331 300,905 379,504 279,372 Customer relationships 158,513 59,465 155,648 46,613 Patents and developed technology 133,923 70,795 124,315 59,328 Trademarks 45,726 21,350 44,914 17,800 License fees 16,881 10,098 13,651 6,065 Other 18,765 10,521 17,163 9,235 773,139 473,134 735,195 418,413
Changes in Carrying Amount of Goodwill by Segment	The changes in the carrying amount of goodwill by segment for the years ended December 31, 2021 and 2020 were as follows: Year ended December 31, 2021 Printing Imaging Medical Industrial Total (Millions of yen) Goodwill – gross 142,185 289,999 506,513 9,283 947,980 Accumulated impairment losses (32,416 ) — — — (32,416 ) Balance at beginning of year 109,769 289,999 506,513 9,283 915,564 Goodwill acquired during the year — — 28,826 — 28,826 Translation adjustments and other 2,931 3,750 1,844 935 9,460 Goodwill – gross 146,025 293,749 537,183 10,218 987,175 Accumulated impairment losses (33,325 ) — — — (33,325 ) Balance at end of year 112,700 293,749 537,183 10,218 953,850 Year ended December 31, 2020 Printing Imaging Medical Industrial Total (Millions of yen) Goodwill – gross 139,036 272,241 508,907 9,767 929,951 Accumulated impairment losses (31,290 ) — — — (31,290 ) Balance at beginning of year 107,746 272,241 508,907 9,767 898,661 Goodwill acquired during the year — — — — — Translation adjustments and other 2,023 17,758 (2,394 ) (484 ) 16,903 Goodwill – gross 142,185 289,999 506,513 9,283 947,980 Accumulated impairment losses (32,416 ) — — — (32,416 ) Balance at end of year 109,769 289,999 506,513 9,283 915,564 * Based on the realignment of Canon’s internal reporting and management structure, from the beginning of 2021, Canon has changed the name and structure of segments to Printing Business Unit, Imaging Business Unit, Medical Business Unit, and Industrial and Others Business Unit. Changes in the carrying amounts of goodwill by segment for the fiscal year ended December 31, 2020 also have been reclassified.

Short-Term Loans and Long-Ter_2

Short-Term Loans and Long-Term Debt (Tables)	12 Months Ended
	Dec. 31, 2021
Debt Disclosure [Abstract]
Schedule of Long-Term Debt	Long-term debt consisted of the following: December 31 2021 2020 (Millions of yen) Loan from banks; bearing interest of 0.21% at December 31, 2021 and 0.09% at December 31, 2020 *1 174,000 344,000 Other debt *2 7,040 6,608 181,040 350,608 Less current portion (1,290 ) (345,774 ) 179,750 4,834 *1 Canon prepaid ¥170,000 million of the outstanding loan under the unsecured revolving credit facility contracts on December 28, 2021 before its due date. The remaining balance of ¥174,000 million was refinanced with a new expiration date in December 2023 under the credit facilities. The outstanding loans under the credit facilities are ¥ *2 Other debt consisted of term-loans and finance lease obligations as of December 31, 2021 and 2020.
Aggregate Annual Maturities of Long-Term Debt Outstanding	The aggregate annual maturities of long-term debt outstanding at December 31, 2021 were as follows: (Millions of yen) Year ending December 31: 2022 1,290 2023 174,920 2024 609 2025 417 2026 237 Thereafter 3,567 181,040

Trade Payables (Tables)

Trade Payables (Tables)	12 Months Ended
	Dec. 31, 2021
Payables and Accruals [Abstract]
Schedule of Trade Payables	Trade payables are summarized as follows: December 31 2021 2020 (Millions of yen) Notes 82,243 83,468 Accounts 256,361 220,341 338,604 303,809

Employee Retirement and Sever_2

Employee Retirement and Severance Benefits (Tables)	12 Months Ended
	Dec. 31, 2021
Retirement Benefits [Abstract]
Reconciliations of Beginning and Ending Balances of Benefit Obligations and Fair Value of Plan Assets	Reconciliations of beginning and ending balances of the projected benefit obligations and the fair value of the plan assets are as follows: Japanese plans Foreign plans December 31 December 31 2021 2020 2021 2020 (Millions of yen) (Millions of yen) Change in benefit obligations: Projected benefit obligations at beginning of year 911,121 925,390 477,337 439,624 Service cost 30,194 30,604 3,827 5,303 Interest cost 4,815 4,064 5,965 6,087 Plan participants’ contributions — — 658 860 Actuarial (gain) loss 2,935 (11,432 ) (21,133 ) 43,202 Benefits paid (39,390 ) (36,646 ) (13,471 ) (12,351 ) Plan amendments (41 ) (859 ) (10,617 ) (1,463 ) Curtailments and settlements — — (682 ) (6,004 ) Foreign currency exchange rate changes — — 34,346 2,079 Projected benefit obligations at end of year 909,634 911,121 476,230 477,337 Change in plan assets: Fair value of plan assets at beginning of year 724,039 704,169 321,713 294,829 Actual return on plan assets 52,688 36,060 24,024 23,912 Employer contributions 11,652 13,360 32,130 13,605 Plan participants’ contributions — — 658 860 Benefits paid (31,636 ) (29,550 ) (13,471 ) (12,351 ) Settlements — — 1,743 (805 ) Foreign currency exchange rate changes — — 28,115 1,663 Fair value of plan assets at end of year 756,743 724,039 394,912 321,713 Funded status at end of year (152,891 ) (187,082 ) (81,318 ) (155,624 )
Amounts Recognized in Consolidated Balance Sheets	Amounts recognized in the consolidated balance sheets at December 31, 2021 and 2020 are as follows: Japanese plans Foreign plans December 31 December 31 2021 2020 2021 2020 (Millions of yen) (Millions of yen) Other assets 2,911 2,684 13,596 2,236 Accrued expenses (1,208 ) (791 ) (1,041 ) (938 ) Accrued pension and severance cost (154,594 ) (188,975 ) (93,873 ) (156,922 ) (152,891 ) (187,082 ) (81,318 ) (155,624 )
Amounts Recognized in Accumulated Other Comprehensive Income (Loss) Before Effect of Income Taxes	Amounts recognized in accumulated other comprehensive income (loss) at December 31, 2021 and 2020 before the effect of income taxes are as follows: Japanese plans Foreign plans December 31 December 31 2021 2020 2021 2020 (Millions of yen) (Millions of yen) Actuarial loss 156,028 192,931 104,647 142,455 Prior service credit (20,371 ) (28,633 ) (10,319 ) (520 ) 135,657 164,298 94,328 141,935
Accumulated Benefit Obligation for All Defined Benefit Plans	The accumulated benefit obligation for all defined benefit plans was as follows: Japanese plans Foreign plans December 31 December 31 2021 2020 2021 2020 (Millions of yen) (Millions of yen) Accumulated benefit obligation 883,462 879,136 462,306 460,536
Pension Plans with Projected and Accumulated Benefit Obligations in Excess of Plan Assets	The projected benefit obligations and the fair value of plan assets for the pension plans with projected benefit obligations in excess of plan assets, and the accumulated benefit obligations and the fair value of plan assets for the pension plans with accumulated benefit obligations in excess of plan assets are as follows: Japanese plans Foreign plans December 31 December 31 2021 2020 2021 2020 (Millions of yen) (Millions of yen) Plans with projected benefit obligations in excess of plan assets: Projected benefit obligations 895,898 897,669 473,860 475,137 Fair value of plan assets 739,581 707,708 391,054 318,079 Plans with accumulated benefit obligations in excess of plan assets: Accumulated benefit obligations 870,314 874,327 455,164 453,120 Fair value of plan assets 739,581 707,708 386,223 312,748
Components of Net Periodic Benefit Cost	Net periodic benefit cost for Canon’s employee retirement and severance defined benefit plans for the years ended December 31, 2021, 2020 and 2019 consisted of the following components: Japanese plans Foreign plans Years ended December 31 Years ended December 31 2021 2020 2019 2021 2020 2019 (Millions of yen) (Millions of yen) Service cost 30,194 30,604 30,903 3,827 5,303 6,264 Interest cost 4,815 4,064 5,074 5,965 6,087 8,643 Expected return on plan assets (21,618 ) (21,013 ) (19,553 ) (15,221 ) (12,006 ) (11,919 ) Amortization of prior service credit (8,303 ) (8,732 ) (11,877 ) (818 ) (675 ) (133 ) Amortization of actuarial loss 8,768 12,401 15,247 7,341 6,122 4,345 (Gain) loss on curtailments and settlements — — (36 ) — 236 (2,197 ) 13,856 17,324 19,758 1,094 5,067 5,003
Other Changes in Plan Assets and Benefit Obligations Recognized in Other Comprehensive Income (Loss)	Other changes in plan assets and benefit obligations recognized in other comprehensive income (loss) for the years ended December 31, 2021, 2020 and 2019 are summarized as follows: Japanese plans Foreign plans Years ended December 31 Years ended December 31 2021 2020 2019 2021 2020 2019 (Millions of yen) (Millions of yen) Current year actuarial (gain) loss (28,135 ) (26,479 ) (19,328 ) (29,936 ) 31,296 28,882 Current year prior service credit (41 ) (859 ) — (10,617 ) (1,463 ) 362 Amortization of actuarial loss (8,768 ) (12,401 ) (15,247 ) (7,341 ) (6,122 ) (4,345 ) Amortization of prior service credit 8,303 8,732 11,877 818 675 133 Curtailments and settlements — — (960 ) (531 ) (966 ) (1,411 ) (28,641 ) (31,007 ) (23,658 ) (47,607 ) 23,420 23,621
Weighted-Average Assumptions Used to Determine Benefit Obligations and Net Periodic Benefit Cost	Weighted-average assumptions used to determine benefit obligations are as follows: Japanese plans Foreign plans December 31 December 31 2021 2020 2021 2020 Discount rate 0.5 % 0.5 % 1.5 % 1.5 % Assumed rate of increase in future compensation levels 2.6 % 2.6 % 0.7 % 0.9 % Interest crediting rate for cash balance plans 1.9 % 1.9 % 1.0 % 1.0 % Weighted-average assumptions used to determine net periodic benefit cost are as follows: Japanese plans Foreign plans Years ended December 31 Years ended December 31 2021 2020 2019 2021 2020 2019 Discount rate 0.5 % 0.5 % 0.6 % 1.5 % 1.6 % 2.4 % Assumed rate of increase in future compensation levels 2.6 % 2.6 % 2.6 % 0.9 % 1.0 % 1.9 % Expected long-term rate of return on plan assets 3.0 % 3.0 % 3.0 % 4.4 % 4.8 % 5.2 % Interest crediting rate for cash balance plans 1.9 % 1.9 % 1.9 % 1.0 % 1.0 % 1.0 %
Fair Values of Company's Pension Plans Assets	The three levels of input used to measure fair value are more fully described in Note 22. The fair values of Canon’s pension plan assets at December 31, 2021 and 2020, by asset category, are as follows: December 31, 2021 Japanese plans Foreign plans Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Total (Millions of yen) Equity securities: Japanese companies (a) 95,698 — — 95,698 — — — — Foreign companies 12,746 — — 12,746 11,628 — — 11,628 Pooled funds (b) — 180,286 — 180,286 — 43,026 — 43,026 Debt securities: Government bonds (c) 133,691 — — 133,691 — — — — Municipal bonds — 1,264 — 1,264 — 2,899 — 2,899 Corporate bonds — 19,373 — 19,373 — 7,821 — 7,821 Pooled funds (d) — 145,348 — 145,348 — 138,687 — 138,687 Mortgage backed securities (and other asset backed securities) — 11,449 — 11,449 — 6,826 — 6,826 Insurance contracts — 114,624 — 114,624 — 6,287 39,398 45,685 Other assets — 28,181 366 28,547 — 106,657 532 107,189 Investment measured at net asset value — — — 13,717 — — — 31,151 242,135 500,525 366 756,743 11,628 312,203 39,930 394,912 December 31, 2020 Japanese plans Foreign plans Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Total (Millions of yen) Equity securities: Japanese companies (e) 80,201 — — 80,201 — — — — Foreign companies 9,807 — — 9,807 10,267 — — 10,267 Pooled funds (f) — 168,745 — 168,745 37,538 37,538 Debt securities: Government bonds (g) 136,771 — — 136,771 — — — — Municipal bonds — 1,126 — 1,126 — 2,324 — 2,324 Corporate bonds — 15,617 — 15,617 — 6,375 — 6,375 Pooled funds (h) — 140,825 — 140,825 — 108,499 — 108,499 Mortgage backed securities (and other asset backed securities) — 8,308 — 8,308 — 2,696 — 2,696 Life insurance company general accounts — 117,762 — 117,762 — 27,953 — 27,953 Other assets — 28,731 1,356 30,087 — 102,159 — 102,159 Investment measured at net asset value — — — 14,790 — — — 23,902 226,779 481,114 1,356 724,039 10,267 287,544 — 321,713 (a) The plan’s equity securities include common stock of the Company and certain of its subsidiaries in the amounts of ¥234 million. (b) These funds invest in listed equity securities consisting of approximately 30% Japanese companies and 70% foreign companies for Japanese plans, and mainly foreign companies for foreign plans. (c) This class includes approximately 80% Japanese government bonds and 20% foreign government bonds for Japanese plans. (d) These funds invest in approximately 25% Japanese government bonds, 55% foreign government bonds, 5% Japanese municipal bonds, and 15% corporate bonds for Japanese plans. These funds invest in approximately 75% foreign government bonds and 25% corporate bonds for foreign plans. (e) The plan’s equity securities include common stock of the Company and certain of its subsidiaries in the amounts of ¥282 million. (f) These funds invest in listed equity securities consisting of approximately 30% Japanese companies and 70% foreign companies for Japanese plans, and mainly foreign companies for foreign plans. (g) This class includes approximately 85% Japanese government bonds and 15% foreign government bonds for Japanese plans, and mainly foreign government bonds for foreign plans. (h) These funds invest in approximately 25% Japanese government bonds, 55% foreign government bonds, 5% Japanese municipal bonds, and 15% corporate bonds for Japanese plans. These funds invest in approximately 60% foreign government bonds and 40% corporate bonds for foreign plans.
Estimated Future Benefit Payments	The following benefit payments, which reflect expected future service, as appropriate, are expected to be paid: Japanese plans Foreign plans (Millions of yen) (Millions of yen) Year ending December 31: 2022 44,169 15,228 2023 44,772 15,887 2024 44,699 17,151 2025 45,715 18,145 2026 44,479 19,199 2027 – 2031 228,342 116,447

Income Taxes (Tables)

Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2021
Income Tax Disclosure [Abstract]
Components of Income Before Income Taxes and Current and Deferred Income Tax Expense	Domestic and foreign components of income before income taxes and the current and deferred income tax expense attributable to such income are summarized as follows: Year ended December 31, 2021 Japanese Foreign Total (Millions of yen) Income before income taxes 165,927 136,779 302,706 Income taxes: Current 47,491 34,201 81,692 Deferred 6,883 (16,709 ) (9,826 ) 54,374 17,492 71,866 Year ended December 31, 2020 Japanese Foreign Total (Millions of yen) Income before income taxes 48,186 82,094 130,280 Income taxes: Current 24,063 25,816 49,879 Deferred (6,007 ) (9,535 ) (15,542 ) 18,056 16,281 34,337 Year ended December 31, 2019 Japanese Foreign Total (Millions of yen) Income before income taxes 107,082 88,411 195,493 Income taxes: Current 39,483 23,186 62,669 Deferred (4,276 ) (2,247 ) (6,523 ) 35,207 20,939 56,146
Reconciliation of Japanese Statutory Income Tax Rate and Effective Income Tax Rate	A reconciliation of the Japanese statutory income tax rate and the effective income tax rate as a percentage of income before income taxes is as follows: Years ended December 31 2021 2020 2019 Japanese statutory income tax rate 31.0 % 31.0 % 31.0 % Increase (reduction) in income taxes resulting from: Expenses not deductible for tax purposes 0.7 2.3 1.7 Income of foreign subsidiaries taxed at lower than Japanese statutory tax rate (3.9 ) (5.8 ) (2.9 ) Tax credit for research and development expenses (3.2 ) (1.7 ) (2.3 ) Change in valuation allowance (3.9 ) 2.4 (1.6 ) Deferred tax liabilities on undistributed earnings of foreign subsidiaries 4.5 2.6 2.4 Tax credit at foreign subsidiaries (0.3 ) (1.3 ) (1.1 ) Effect of enacted changes in tax laws (1.0 ) (1.5 ) (0.2 ) Other (0.2 ) (1.6 ) 1.7 Effective income tax rate 23.7 % 26.4 % 28.7 %
Captions of Net Deferred Income Tax Assets and Liabilities Included in Consolidated Balance Sheets	Net deferred income tax assets and liabilities are included in the accompanying consolidated balance sheets under the following captions: December 31 2021 2020 (Millions of yen) Other assets 138,507 154,226 Other noncurrent liabilities (43,402 ) (48,247 ) 95,105 105,979
Tax Effects of Temporary Differences to Deferred Tax Assets and Deferred Tax Liabilities	The tax effects of temporary differences that give rise to the deferred tax assets and deferred tax liabilities at December 31, 2021 and 2020 are presented below: December 31 2021 2020 (Millions of yen) Deferred tax assets: Inventories 11,263 10,551 Accrued business tax 3,387 1,629 Accrued pension and severance cost 67,752 95,386 Research and development – costs capitalized for tax purposes 5,004 4,989 Property, plant and equipment 35,658 34,923 Operating lease liabilities 17,328 20,163 Accrued expenses 29,331 28,243 Net operating losses carried forward 33,873 29,591 Other 48,621 42,741 252,217 268,216 Less valuation allowance (19,073 ) (30,752 ) Total deferred tax assets 233,144 237,464 Deferred tax liabilities: Undistributed earnings of foreign subsidiaries (19,677 ) (9,147 ) Tax deductible reserve (4,007 ) (4,040 ) Financing lease revenue (14,602 ) (15,041 ) Operating lease right-of-use (17,066 ) (19,425 ) Intangible assets (51,173 ) (54,948 ) Other (31,514 ) (28,884 ) Total deferred tax liabilities (138,039 ) (131,485 ) Net deferred tax assets 95,105 105,979
Amounts and Period Ranges of Operating Losses Carried Forward Available to Reduce Future Taxable Income	Periods available to reduce future taxable income vary in each tax jurisdiction and generally range from one year to an indefinite period as follows: (Millions of yen) Within one year 1,206 After one year through five years 13,869 After five years through ten years 44,316 After ten years through twenty years 8,223 Indefinite period 107,967 175,581
Reconciliation of Beginning and Ending Amount of Unrecognized Tax Benefits	A reconciliation of the beginning and ending amount of unrecognized tax benefits is as follows: Years ended December 31 2021 2020 2019 (Millions of yen) Balance at beginning of year 8,572 8,120 8,649 Additions for tax positions of the current year 1,168 — — Additions for tax positions of prior years 216 208 204 Reductions for tax positions of prior years — (49 ) (44 ) Settlements with tax authorities (62 ) — (402 ) Other (81 ) 293 (287 ) Balance at end of year* 9,813 8,572 8,120 * The unrecognized tax benefits were offset by deferred tax assets in the amount of ¥1,695 million, ¥1,412 million and ¥933 million as of December 31, 2021, 2020 and 2019, respectively, and reported under “other noncurrent liabilities” on the consolidated balance sheets.

Other Comprehensive Income (L_2

Other Comprehensive Income (Loss) (Tables)	12 Months Ended
	Dec. 31, 2021
Equity [Abstract]
Changes in Accumulated Other Comprehensive Income (Loss)	Changes in accumulated other comprehensive income (loss) for the years ended December 31, 2021, 2020 and 2019 are as follows: Foreign Gains and Pension Total (Millions of yen) Balance at December 31, 2018 (63,815 ) 308 (205,564 ) (269,071 ) Cumulative effects of accounting standard update – adoption of ASU No. 2017-12 — (122 ) — (122 ) Equity transactions with noncontrolling interests and other (424 ) — — (424 ) Other comprehensive income (loss) before reclassifications (31,889 ) (1,723 ) (12,763 ) (46,375 ) Amounts reclassified from accumulated other comprehensive income (loss) (154 ) 650 7,054 7,550 Net change during the year (32,467 ) (1,073 ) (5,709 ) (39,249 ) Balance at December 31, 2019 (96,282 ) (887 ) (211,273 ) (308,442 ) Equity transactions with noncontrolling interests and other (9 ) — — (9 ) Other comprehensive income (loss) before reclassifications (17,355 ) (1,199 ) (7,530 ) (26,084 ) Amounts reclassified from accumulated other comprehensive income (loss) — 2,186 7,560 9,746 Net change during the year (17,364 ) 987 30 (16,347 ) Balance at December 31, 2020 (113,646 ) 100 (211,243 ) (324,789 ) Other comprehensive income (loss) before reclassifications 119,689 (3,330 ) 49,759 166,118 Amounts reclassified from accumulated other comprehensive income (loss) (524 ) 2,336 5,065 6,877 Net change during the year 119,165 (994 ) 54,824 172,995 Balance at December 31, 2021 5,519 (894 ) (156,419 ) (151,794 )
Reclassifications Out of Accumulated Other Comprehensive Income (Loss)	Reclassifications out of accumulated other comprehensive income (loss) for the years ended December 31, 2021, 2020 and 2019 are as follows: Amount reclassified from Year ended Year ended Year ended Affected line items in consolidated statements of income (Millions of yen) Foreign currency translation adjustments (759 ) — — Selling, general and administrative expenses — — (154 ) Other, net 235 — — Income taxes (524 ) — (154 ) Consolidated net income — — — Net income attributable to noncontrolling interests (524 ) — (154 ) Net income attributable to Canon Inc. Gains and losses on derivative instruments 3,285 3,034 661 Net Sales (959 ) (775 ) (2 ) Income taxes 2,326 2,259 659 Consolidated net income 10 (73 ) (9 ) Net income attributable to noncontrolling interests 2,336 2,186 650 Net income attributable to Canon Inc. Pension liability adjustments 7,519 10,082 9,953 Other, net (1,625) (2,484 ) (2,523 ) Income taxes 5,894 7,598 7,430 Consolidated net income (829) (38 ) (376 ) Net income attributable to noncontrolling interests 5,065 7,560 7,054 Net income attributable to Canon Inc. Total amount reclassified, net of tax and noncontrolling interests 6,877 9,746 7,550 * Amounts in parentheses indicate gains in consolidated statements of income.
Tax Effects Allocated to Other Comprehensive Income (Loss) and Reclassification Adjustments, Including Amounts Attributable to Noncontrolling Interests	Tax effects allocated to each component of other comprehensive income (loss) and reclassification adjustments, including amounts attributable to noncontrolling interests, are as follows: Years ended December 31 Before-tax Tax (expense) Net-of-tax (Millions of yen) 2021: Foreign currency translation adjustments Amount arising during the year 122,075 (1,112 ) 120,963 Reclassification adjustments for gains and losses realized in net income (759 ) 235 (524 ) Net change during the year 121,316 (877 ) 120,439 Net gains and losses on derivative instruments: Amount arising during the year (4,596 ) 1,298 (3,298 ) Reclassification adjustments for gains and losses realized in net income 3,285 (959 ) 2,326 Net change during the year (1,311 ) 339 (972 ) Pension liability adjustments: Amount arising during the year 68,729 (18,115) 50,614 Reclassification adjustments for gains and losses realized in net income 7,519 (1,625) 5,894 Net change during the year 76,248 (19,740) 56,508 Other comprehensive income (loss) 196,253 (20,278) 175,975 Years ended December 31 Before-tax Tax (expense) Net-of-tax (Millions of yen) 2020: Foreign currency translation adjustments Amount arising during the year (17,583 ) 229 (17,354 ) Reclassification adjustments for gains and losses realized in net income — — — Net change during the year (17,583 ) 229 (17,354 ) Net gains and losses on derivative instruments: Amount arising during the year (1,731 ) 442 (1,289 ) Reclassification adjustments for gains and losses realized in net income 3,034 (775 ) 2,259 Net change during the year 1,303 (333 ) 970 Pension liability adjustments: Amount arising during the year (2,495 ) (3,721 ) (6,216 ) Reclassification adjustments for gains and losses realized in net income 10,082 (2,484 ) 7,598 Net change during the year 7,587 (6,205 ) 1,382 Other comprehensive income (loss) (8,693 ) (6,309 ) (15,002 ) Years ended December 31 Before-tax Tax (expense) Net-of-tax (Millions of yen) 2019: Foreign currency translation adjustments Amount arising during the year (32,396 ) 393 (32,003 ) Reclassification adjustments for gains and losses realized in net income (154 ) — (154 ) Net change during the year (32,550 ) 393 (32,157 ) Net gains and losses on derivative instruments: Amount arising during the year (2,180 ) 453 (1,727 ) Reclassification adjustments for gains and losses realized in net income 661 (2 ) 659 Net change during the year (1,519 ) 451 (1,068 ) Pension liability adjustments: Amount arising during the year (9,916 ) (1,144 ) (11,060 ) Reclassification adjustments for gains and losses realized in net income 9,953 (2,523 ) 7,430 Net change during the year 37 (3,667 ) (3,630 ) Other comprehensive income (loss) (34,032 ) (2,823 ) (36,855 )

Revenue (Tables)

Revenue (Tables)	12 Months Ended
	Dec. 31, 2021
Revenue from Contract with Customer [Abstract]
Schedule of Disaggregated Revenue By Timing	Disaggregated revenue by timing is as follows. Disaggregated revenue by business unit, product and geographic area are described in Note 23. Printing Imaging Medical Industrial and Others Corporate Consolidated (Millions of yen) 2021: Revenue recognized at a point in time 1,419,043 646,849 329,323 439,914 (105,126 ) 2,730,003 Revenue recognized over time 519,804 6,683 151,039 105,828 — 783,354 Total 1,938,847 653,532 480,362 545,742 (105,126 ) 3,513,357 Printing Imaging Medical Industrial and Others Corporate Consolidated (Millions of yen) 2020: Revenue recognized at a point in time 1,316,556 534,685 287,849 336,235 (83,094 ) 2,392,231 Revenue recognized over time 487,871 6,629 148,225 125,287 — 768,012 Total 1,804,427 541,314 436,074 461,522 (83,094 ) 3,160,243 Printing Imaging Medical Industrial and Others Corporate Consolidated (Millions of yen) 2019: Revenue recognized at a point in time 1,520,393 651,629 290,702 391,272 (93,180 ) 2,760,816 Revenue recognized over time 572,071 10,077 147,823 102,512 — 832,483 Total 2,092,464 661,706 438,525 493,784 (93,180 ) 3,593,299

Stock-Based Compensation (Table

Stock-Based Compensation (Tables)	12 Months Ended
	Dec. 31, 2021
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Schedule of Fair Value Assumptions Used to Estimate Fair Value of Option	The fair value of the option award was estimated on the date of grant using the Black-Sholes option pricing model that incorporates the assumptions presented below: Year ended December 31, 2021 Year ended December 31, 2020 *1 *2 Expected term of option (in years) 5.0 6.0 6.0 Expected volatility 24.83 % 20.32 % 20.92 % Dividend yield 3.04 % 6.25 % 6.97 % Risk-free interest rate (0.10 %) (0.12 %) (0.17 %) *1 Granted on March 25, 2020 *2 Granted on May 1, 2020
Summary of Option Activity Under Stock Option Plans	A summary of option activity the Shares Weighted-average exercise price Weighted-average remaining Aggregate (Yen) (Year) (Millions of yen) Outstanding at January 1, 2019 74,000 1 29.3 222 Granted 116,300 1 Exercised (4,500 ) 1 Outstanding at December 31, 2019 185,800 1 29.0 555 Granted 98,900 1 Exercised (37,100 ) 1 Outstanding at December 31, 2020 247,600 1 28.4 324 Granted 43,700 1 Exercised (4,800 ) 1 Outstanding at December 31, 2021 286,500 1 27.8 802 Exercisable at December 31, 2021 286,500 1 27.8 802

Net Income Attributable to Ca_2

Net Income Attributable to Canon Inc. Shareholders per Share (Tables)	12 Months Ended
	Dec. 31, 2021
Earnings Per Share [Abstract]
Reconciliation of Numerators and Denominators of Basic and Diluted Net Income Attributable to Canon Inc. Shareholders Per Share Computations	A reconciliation of the numerators and denominators of basic and diluted net income attributable to Canon Inc. shareholders per share computations is as follows: Years ended December 31 2021 2020 2019 (Millions of yen) Basic net income attributable to Canon Inc. 214,718 83,318 124,964 Diluted net income attributable to Canon Inc. 214,714 83,315 124,962 (Number of shares) Average common shares outstanding 1,045,632,588 1,049,802,197 1,069,956,767 Effect of dilutive securities: Stock options 277,066 229,691 158,173 Diluted common shares outstanding 1,045,909,654 1,050,031,888 1,070,114,940 (Yen) Net income attributable to Canon Inc. shareholders per share: Basic 205.35 79.37 116.79 Diluted 205.29 79.35 116.77

Derivatives and Hedging Activ_2

Derivatives and Hedging Activities (Tables)	12 Months Ended
	Dec. 31, 2021
Contract Amounts of Foreign Exchange Contracts	Contract amounts of foreign exchange contracts at December 31, 2021 and 2020 are set forth below: December 31 2021 2020 (Millions of yen) To sell foreign currencies 169,392 137,721 To buy foreign currencies 27,453 27,220
Designated as Hedging Instrument
Fair Value of Derivative Instruments in Consolidated Balance Sheets	Derivatives designated as hedging instruments Fair value December 31 Balance sheet location 2021 2020 (Millions of yen) Assets: Foreign exchange contracts Prepaid expenses and other current assets 42 426 Liabilities: Foreign exchange contracts Other current liabilities 777 416
Not Designated as Hedging Instrument
Fair Value of Derivative Instruments in Consolidated Balance Sheets	Derivatives not designated as hedging instruments Fair value December 31 Balance sheet location 2021 2020 (Millions of yen) Assets: Foreign exchange contracts Prepaid expenses and other current assets 23 107 Liabilities: Foreign exchange contracts Other current liabilities 1,342 809
Cash Flow Hedging | Designated as Hedging Instrument
Effect of Derivative Instruments in Consolidated Statements of Income	Effect of derivative instruments in the consolidated statements of income The following tables present the effect of Canon’s derivative instruments in the consolidated statements of income for the years ended December 31, 2021, 2020 and 2019. Derivatives in cash flow hedging relationships Year ended December 31 Gain (loss) Gain (loss) reclassified from Amount Location Amount (Millions of yen) 2021: Foreign exchange contracts (4,596 ) Net sales (3,285 ) 2020: Foreign exchange contracts (1,731 ) Net sales (3,034 ) 2019: Foreign exchange contracts (2,180 ) Net sales (661 )
Cash Flow Hedging | Not Designated as Hedging Instrument
Effect of Derivative Instruments in Consolidated Statements of Income	Derivatives not designated as hedging instruments Gain (loss) recognized in income on derivative Years ended December 31 Location 2021 2020 2019 (Millions of yen) Foreign exchange contracts Other, net (6,099 ) 104 805

Lessee Accounting (Tables)

Lessee Accounting (Tables)	12 Months Ended
	Dec. 31, 2021
Leases [Abstract]
Supplemental Income Statement	Lease costs are included in cost of sales or selling general and administrative expense in accompanying consolidated statements of income. Supplemental income statement information is as follows: Year ended December 31, 2021 Year ended December 31, 2020 (Millions of yen) Operating lease cost 39,699 40,053 Short-term lease cost 13,961 14,245 Other lease cost 71 120 53,731 54,418
Supplemental Cash Flow Information	Supplemental cash flow information is as follows. Year ended December 31, 2021 Year ended December 31, 2020 (Millions of yen) Cash paid for amount included in the measurement of lease liabilities Operating cash flows from operating leases 39,879 36,733 Noncash activity – Rights of use assets obtained in exchange for lease liabilities Operating leases 21,588 30,700
Schedule Of Future Minimum Rental Payments For Operating Leases	The following is a schedule by year of the future minimum lease payments under operating leases at December 31, 2021. (Millions of yen) Year ending December 31: 2022 32,941 2023 22,512 2024 15,226 2025 10,816 2026 7,832 Thereafter 11,192 Total future minimum lease payments 100,519 Less Imputed Interest (4,189 ) 96,330
Summary of Remaining Lease Termand Discount Rate	The following is remaining lease term and discount rate under operating leases at December 31, 2021 and 2020. December 31, 2021 December 31, 2020 Weighted-average remaining lease term 54 months 56 months Weighted-average discount rate 2.1% 2.1%

Commitments and Contingent Li_2

Commitments and Contingent Liabilities (Tables)	12 Months Ended
	Dec. 31, 2021
Commitments and Contingencies Disclosure [Abstract]
Changes in Accrued Product Warranty Costs	Accrued product warranty costs are included in accrued expenses in the accompanying consolidated balance sheets and the changes for the years ended December 31, 2021 and 2020 are summarized as follows: Years ended December 31 2021 2020 (Millions of yen) Balance at beginning of the year 14,300 15,846 Additions 15,687 11,355 Utilization (11,928 ) (10,657 ) Other (1,110 ) (2,244 ) Balance at end of the year 16,949 14,300

Disclosures about the Fair Va_2

Disclosures about the Fair Value of Financial Instruments and Concentrations of Credit Risk (Tables)	12 Months Ended
	Dec. 31, 2021
Investments, All Other Investments [Abstract]
Estimated Fair Values of Canon's Financial Instruments	The estimated fair values of Canon’s financial instruments at December 31, 2021 and 2020 are set forth below. The following summary excludes cash and cash equivalents, trade receivables, noncurrent receivables, short-term loans, trade payables and accrued expenses, and the fair values of these instruments approximate their carrying amounts. The summary also excludes investments and derivative instruments which are disclosed in Note 2 and Note 22, and Note 18, respectively. December 31 2021 2020 Carrying Estimated Carrying Estimated (Millions of yen) Long-term debt, including current installments (177,410 ) (177,343 ) (346,317 ) (346,275 )

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	12 Months Ended
	Dec. 31, 2021
Fair Value Disclosures [Abstract]
Assets and Liabilities Measured at Fair Value on Recurring Basis	The following tables present Canon’s assets and liabilities that are measured at fair value on a recurring basis consistent with the fair value hierarchy at December 31, 2021 and 2020. December 31, 2021 Level 1 Level 2 Level 3 Total (Millions of yen) Assets: Cash and cash equivalents — 500 — 500 Investments: Fund trusts and others 281 328 — 609 Equity securities 28,640 — — 28,640 Prepaid expenses and other current assets: Derivatives — 65 — 65 Total assets 28,921 893 — 29,814 Liabilities: Other current liabilities: Derivatives — 2,119 — 2,119 Total liabilities — 2,119 — 2,119 December 31, 2020 Level 1 Level 2 Level 3 Total (Millions of yen) Assets: Cash and cash equivalents — 500 — 500 Investments: Fund trusts and others 284 248 — 532 Equity securities 18,683 — — 18,683 Prepaid expenses and other current assets: Derivatives — 533 — 533 Total assets 18,967 1,281 — 20,248 Liabilities: Other current liabilities: Derivatives — 1,225 — 1,225 Total liabilities — 1,225 — 1,225

Segment Information (Tables)

Segment Information (Tables)	12 Months Ended
	Dec. 31, 2021
Segment Reporting [Abstract]
Information about Operating Results and Assets for Each Segment	Information about operating results and assets for each segment as of and for the years ended December 31, 2021, 2020 and 2019 is as follows: Printing Imaging Medical Industrial and Corporate and Consolidated (Millions of yen) 2021: Net sales: External customers 1,934,012 651,494 480,029 449,915 (2,093 ) 3,513,357 Intersegment 4,835 2,038 333 95,827 (103,033 ) — Total 1,938,847 653,532 480,362 545,742 (105,126 ) 3,513,357 Operating cost and expenses 1,713,154 574,814 450,942 501,434 (8,905 ) 3,231,439 Operating profit 225,693 78,718 29,420 44,308 (96,221 ) 281,918 Other income (deductions) 7,259 (256 ) 4,876 342 8,567 20,788 Income before income taxes 232,952 78,462 34,296 44,650 (87,654 ) 302,706 Total assets 1,009,922 236,143 311,247 345,883 2,847,693 4,750,888 Depreciation and amortization 69,549 21,840 12,435 27,677 89,745 221,246 Capital expenditures 63,609 12,069 11,888 25,759 65,675 179,000 2020: Net sales: External customers 1,800,898 539,560 435,368 385,177 (760 ) 3,160,243 Intersegment 3,529 1,754 706 76,345 (82,334 ) — Total 1,804,427 541,314 436,074 461,522 (83,094 ) 3,160,243 Operating cost and expenses 1,657,319 535,584 410,830 441,006 4,957 3,049,696 Operating profit 147,108 5,730 25,244 20,516 (88,051 ) 110,547 Other income (deductions) 5,076 (778 ) 300 1,171 13,964 19,733 Income before income taxes 152,184 4,952 25,544 21,687 (74,087 ) 130,280 Total assets 913,931 239,605 286,749 348,614 2,836,715 4,625,614 Depreciation and amortization 69,725 22,201 11,781 28,720 95,398 227,825 Capital expenditures 56,613 12,540 7,244 21,276 64,054 161,727 2019: Net sales: External customers 2,089,024 660,105 437,456 405,114 1,600 3,593,299 Intersegment 3,440 1,601 1,069 88,670 (94,780 ) — Total 2,092,464 661,706 438,525 493,784 (93,180 ) 3,593,299 Operating cost and expenses* 1,908,436 634,773 411,781 465,197 (1,308 ) 3,418,879 Operating profit 184,028 26,933 26,744 28,587 (91,872 ) 174,420 Other income (deductions) 6,066 905 539 — 13,563 21,073 Income before income taxes 190,094 27,838 27,283 28,587 (78,309 ) 195,493 Total assets 1,002,778 288,545 273,525 310,110 2,896,960 4,771,918 Depreciation and amortization 74,958 24,561 11,760 29,086 96,962 237,327 Capital expenditures 61,789 18,929 7,074 28,436 95,000 211,228 * During 2019, the Company implemented a restructuring plan centered in Europe with the goal of reorganizing sales structure and improving profitability mainly in the Printing Business Unit. The employee
Product Sales to External Customers for Each Segment	Information about sales by product and service to external customers for each segment for the years ended December 31, 2021, 2020 and 2019 is as follows: Years ended December 31 2021 2020 2019 (Millions of yen) Printing Office multifunction devices 477,000 455,357 573,297 Office others 279,366 267,123 292,378 Office 756,366 722,480 865,675 Laser printers 560,159 502,157 624,597 Inkjet printers and Others 328,932 326,041 296,622 Prosumer 889,091 828,198 921,219 Production 288,555 250,220 302,130 Total 1,934,012 1,800,898 2,089,024 Imaging Cameras 432,885 347,240 466,306 Network cameras and Others 218,609 192,320 193,799 Total 651,494 539,560 660,105 Medical Diagnostic equipment 480,029 435,368 437,456 Industrial and Others Lithography equipment 213,699 142,516 157,160 Industrial equipment 112,274 126,762 107,281 Others 123,942 115,899 140,673 Total 449,915 385,177 405,114 Corporate (2,093 ) (760 ) 1,600 Consolidated 3,513,357 3,160,243 3,593,299
Information by Major Geographic Area	Information by major geographic area as of and for the years ended December 31, 2021, 2020 and 2019 is as follows: 2021 2020 2019 (Millions of yen) Net sales: Japan 830,378 806,305 872,534 Americas 968,839 852,451 1,029,078 Europe 894,898 795,616 882,480 Asia and Oceania 819,242 705,871 809,207 Total 3,513,357 3,160,243 3,593,299 Long-lived assets: Japan 986,638 1,011,109 1,053,074 Americas 152,137 133,648 148,669 Europe 158,297 175,516 191,050 Asia and Oceania 141,915 143,265 159,217 Total 1,438,987 1,463,538 1,552,010

Basis of Presentation and Sig_4

Basis of Presentation and Significant Accounting Policies - Additional Information (Detail) ¥ in Millions	12 Months Ended
	Dec. 31, 2021JPY (¥)Entity	Dec. 31, 2020JPY (¥)	Dec. 31, 2019JPY (¥)
Significant Accounting Policies [Line Items]
Foreign currency exchange gains (losses)	¥ (21,746)	¥ (4,451)	¥ (4,236)
Advertising expenses	¥ 36,812	31,273	46,665
Trademarks
Significant Accounting Policies [Line Items]
Intangible assets, useful life	15 years
License Fees
Significant Accounting Policies [Line Items]
Intangible assets, useful life	8 years
Minimum | Computer software, intangible asset
Significant Accounting Policies [Line Items]
Intangible assets, useful life	3 years
Minimum | Patents and developed technology
Significant Accounting Policies [Line Items]
Intangible assets, useful life	5 years
Minimum | Customer Relationships
Significant Accounting Policies [Line Items]
Intangible assets, useful life	7 years
Minimum | Building
Significant Accounting Policies [Line Items]
Depreciation period	3 years
Minimum | Machinery and Equipment
Significant Accounting Policies [Line Items]
Depreciation period	1 year
Minimum | Assets Leased to Others
Significant Accounting Policies [Line Items]
Depreciation period	2 years
Maximum | Computer software, intangible asset
Significant Accounting Policies [Line Items]
Intangible assets, useful life	8 years
Maximum | Patents and developed technology
Significant Accounting Policies [Line Items]
Intangible assets, useful life	21 years
Maximum | Customer Relationships
Significant Accounting Policies [Line Items]
Intangible assets, useful life	15 years
Maximum | Building
Significant Accounting Policies [Line Items]
Depreciation period	60 years
Maximum | Machinery and Equipment
Significant Accounting Policies [Line Items]
Depreciation period	20 years
Maximum | Assets Leased to Others
Significant Accounting Policies [Line Items]
Depreciation period	50 years
Available-for-sale Securities
Significant Accounting Policies [Line Items]
Cash equivalents	¥ 500	500
Selling, General and Administrative Expenses
Significant Accounting Policies [Line Items]
Shipping and handling cost	¥ 53,347	¥ 47,721	¥ 51,718
Consolidated Net Sales | HP Inc. | Printing Business Unit | Customer Concentration Risk
Significant Accounting Policies [Line Items]
Concentration risk, percentage	11.60%	11.40%	13.00%
Foreign
Significant Accounting Policies [Line Items]
Number of manufacturing plants | Entity	13
Japan
Significant Accounting Policies [Line Items]
Number of manufacturing plants | Entity	29

Basis of Presentation and Sig_5

Basis of Presentation and Significant Accounting Policies (Schedule of Consolidated Statements of Income) (Detail) - JPY (¥) ¥ / shares in Units, ¥ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Condensed Income Statements, Captions [Line Items]
Selling, general and administrative expenses	¥ 1,058,536	¥ 993,009	¥ 1,137,110
Operating profit	281,918	110,547	174,420
Income before income taxes	302,706	130,280	195,493
Income taxes	71,866	34,337	56,146
Consolidated net income	230,840	95,943	139,347
Less: Net income attributable to noncontrolling interests	16,122	12,625	14,383
Net income attributable to Canon Inc.	¥ 214,718	¥ 83,318	¥ 124,964
Net income attributable to Canon Inc. shareholders per share:
Basic	¥ 205.35	¥ 79.37	¥ 116.79
Diluted	¥ 205.29	¥ 79.35	¥ 116.77
Restatement Adjustment
Condensed Income Statements, Captions [Line Items]
Selling, general and administrative expenses			¥ 1,137,110
Operating profit			174,420
Income before income taxes			195,493
Income taxes			56,146
Consolidated net income			139,347
Less: Net income attributable to noncontrolling interests			14,383
Net income attributable to Canon Inc.			¥ 124,964
Net income attributable to Canon Inc. shareholders per share:
Basic			¥ 116.79
Diluted			¥ 116.77
Previously Reported
Condensed Income Statements, Captions [Line Items]
Selling, general and administrative expenses			¥ 1,136,863
Operating profit			174,667
Income before income taxes			195,740
Income taxes			56,223
Consolidated net income			139,517
Less: Net income attributable to noncontrolling interests			14,412
Net income attributable to Canon Inc.			¥ 125,105
Net income attributable to Canon Inc. shareholders per share:
Basic			¥ 116.93
Diluted			¥ 116.91

Basis of Presentation and Sig_6

Basis of Presentation and Significant Accounting Policies (Schedule of Consolidated Statements of Comprehensive Income) (Detail) - JPY (¥) ¥ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Condensed Statement of Income Captions [Line Items]
Consolidated net income	¥ 230,840	¥ 95,943	¥ 139,347
Less: Comprehensive income attributable to noncontrolling interests	19,102	13,961	16,353
Comprehensive income (loss) attributable to Canon Inc.	¥ 387,713	¥ 66,980	86,139
Previously Reported
Condensed Statement of Income Captions [Line Items]
Consolidated net income			139,517
Less: Comprehensive income attributable to noncontrolling interests			16,382
Comprehensive income (loss) attributable to Canon Inc.			¥ 86,280

Basis of Presentation and Sig_7

Basis of Presentation and Significant Accounting Policies (Schedule of Consolidated Statements of Cash Flows) (Detail) - JPY (¥) ¥ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Condensed Cash Flow Statements, Captions [Line Items]
Consolidated net income	¥ 230,840	¥ 95,943	¥ 139,347
Increase in accrued expenses	(8,673)	(16,413)	9,738
Deferred income taxes	¥ (9,826)	¥ (15,542)	(6,523)
Restatement Adjustment
Condensed Cash Flow Statements, Captions [Line Items]
Consolidated net income			139,347
Increase in accrued expenses			9,738
Deferred income taxes			(6,523)
Previously Reported
Condensed Cash Flow Statements, Captions [Line Items]
Consolidated net income			139,517
Increase in accrued expenses			9,491
Deferred income taxes			¥ (6,446)

Investments - Schedule of Held-

Investments - Schedule of Held-to-maturity debt securities included in short-term investments (Detail) ¥ in Millions	Dec. 31, 2021JPY (¥)
Segment Reporting [Abstract]
Carrying amount	¥ 2,164
Estimated fair value	2,167
Difference	¥ 3

Investments - Schedule of unrea

Investments - Schedule of unrealized and Realized Gains and Losses Equity Securities (Detail) - JPY (¥) ¥ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Realized Investment Gains (Losses) [Abstract]
Net gains and (losses) recognized during the period on equity securities	¥ 8,958	¥ 1,959	¥ 2,148
Less: Net gains and (losses) recognized during the period on equity securities sold during the period	467	477	(76)
Unrealized gains and (losses) recognized during the period on equity securities still held at December 31.	¥ 8,491	¥ 1,482	¥ 2,224

Investments - Schedule of Inves

Investments - Schedule of Investments in Affiliated Companies (Detail) - JPY (¥) ¥ in Millions	Dec. 31, 2021	Dec. 31, 2020
Schedule of Equity Method Investments [Line Items]
Equity Method Investments	¥ 22,025	¥ 19,634
Canon Korea [Member]
Schedule of Equity Method Investments [Line Items]
Equity Method Investment, Ownership Percentage	50.00%
Equity Method Investments	¥ 11,627	10,719
Other [Member]
Schedule of Equity Method Investments [Line Items]
Equity Method Investments	¥ 10,398	¥ 8,915

Investments - Additional Inform

Investments - Additional Information (Detail) - JPY (¥) ¥ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Carrying amount of non-marketable equity securities without readily determinable fair value	¥ 6,661	¥ 8,559
Time deposits with original maturities of more than three months	1,213	71
Canon's share of net earnings in affiliated companies accounted for by the equity method, included in other income (deductions)	1,396	(994)	¥ (311)
Short-term Investments [Member]
Held to maturity debt securities current after allowance for credit loss	¥ 2,164	¥ 0

Trade Receivables (Schedule of

Trade Receivables (Schedule of Trade Receivables) (Detail) - JPY (¥) ¥ in Millions	Dec. 31, 2021	Dec. 31, 2020
Receivables [Abstract]
Notes	¥ 28,616	¥ 34,922
Accounts	493,816	511,849
Trade receivables	522,432	546,771
Less allowance for credit losses	(12,494)	(11,645)
Trade Accounts And Notes Receivable Gross Current, Total	¥ 509,938	¥ 535,126

Inventories (Schedule of Invent

Inventories (Schedule of Inventories) (Detail) - JPY (¥) ¥ in Millions	Dec. 31, 2021	Dec. 31, 2020
Inventory Disclosure [Abstract]
Finished goods	¥ 395,381	¥ 352,513
Work in process	199,153	160,696
Raw materials	56,034	49,598
Inventories	¥ 650,568	¥ 562,807

Property, Plant and Equipment_2

Property, Plant and Equipment (Schedule of Property, Plant and Equipment) (Detail) - JPY (¥) ¥ in Millions	Dec. 31, 2021	Dec. 31, 2020
Property, Plant and Equipment [Abstract]
Land	¥ 276,306	¥ 270,308
Buildings	1,728,811	1,687,921
Machinery and equipment	1,849,271	1,806,185
Construction in progress	43,283	37,324
Finance lease right-of-use assets	6,533	6,048
Cost	3,904,204	3,807,786
Less accumulated depreciation	(2,862,801)	(2,770,106)
Property, plant and equipment, net	¥ 1,041,403	¥ 1,037,680
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]	Property, plant and equipment, net

Property, Plant and Equipment -

Property, Plant and Equipment - Additional Information (Detail) - JPY (¥) ¥ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Weighted Average Number Of Shares Outstanding Basic And Diluted Proforma [Abstract]
Depreciation expenses	¥ 156,333	¥ 162,733	¥ 170,418
Amount due for purchase of property, plant and equipment	¥ 29,562	¥ 27,688

Lessor Accounting - Additional

Lessor Accounting - Additional Information (Detail) - JPY (¥) ¥ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Leases Disclosure [Line Items]
Proceeds from sale of lease finance receivables	¥ 0	¥ 19,185	¥ 11,710
Financing receivables	366,051	337,265
Uncollectible Receivables [Member]
Leases Disclosure [Line Items]
Financing receivables	¥ 23,984	36,339
Minimum
Leases Disclosure [Line Items]
Term of financing receivables	1 year
Maximum
Leases Disclosure [Line Items]
Term of financing receivables	8 years
Equipment Leased to Customer
Leases Disclosure [Line Items]
Property, plant and equipment lease	¥ 143,160	132,763
Accumulated depreciation on property, plant and equipment lease	¥ 87,879	¥ 81,345

Lessor Accounting (Summary of L

Lessor Accounting (Summary of Lease Income) (Detail) - JPY (¥) ¥ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Sales Type And Direct Financing Leases Income [Abstract]
Revenue at lease commencement	¥ 84,895	¥ 92,133
Interest income on lease receivables	18,351	18,594
Sales-type and direct financing leases income total	103,246	110,727
Lease income – operating leases	27,122	23,878
Variable lease income	5,277	5,343
Total lease income	¥ 135,645	¥ 139,948

Lessor Accounting (Components o

Lessor Accounting (Components of Finance Receivables) (Detail) - JPY (¥) ¥ in Millions	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Leases [Abstract]
Total minimum lease payments receivable	¥ 366,051	¥ 337,265
Unguaranteed residual values	12,192	11,459
Executory costs
Unearned income	(31,619)	(29,541)
Aggregated net investment in finance leases	346,624	319,183
Less allowance for credit losses	(3,791)	(3,068)	¥ (2,627)
Total	342,833	316,115
Less current portion	(119,902)	(108,837)
Total	¥ 222,931	¥ 207,278

Lessor Accounting (Activity in

Lessor Accounting (Activity in Allowance for Credit Losses) (Detail) - JPY (¥) ¥ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Receivables [Abstract]
Balance at beginning of year	¥ 3,068	¥ 2,627
Charge-offs	(2,157)	(2,199)
Provision	2,331	2,351
Translation adjustments and other	549	289
Balance at end of year	¥ 3,791	¥ 3,068

Lessor Accounting (Future Minim

Lessor Accounting (Future Minimum Lease Payments to be Received Under Financing Leases and Noncancelable Operating Leases) (Detail) - JPY (¥) ¥ in Millions	Dec. 31, 2021	Dec. 31, 2020
Financing leases
2022	¥ 131,113
2023	99,168
2024	68,241
2025	41,600
2026	18,550
Thereafter	7,379
Total minimum lease payments receivable	366,051	¥ 337,265
Operating leases
2022	11,578
2023	7,168
2024	4,914
2025	2,972
2026	1,471
Thereafter	1,402
Operating Leases, Total	¥ 29,505

Acquisitions - Additional Infor

Acquisitions - Additional Information (Detail) - JPY (¥) ¥ in Millions	Sep. 28, 2021	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Business Acquisition [Line Items]
Cash consideration		¥ 31,751	¥ 127	¥ 8,880
Equity investment		22,025	19,634
Gain from Equity investment		1,396	(994)	¥ (311)
Intangible assets acquired, technical assets		¥ 36,015	¥ 31,413
Intangible assetsweighted average useful life, technical assets		9 years	6 years
Redlen [Member]
Business Acquisition [Line Items]
Cash consideration	¥ 31,640
Investment held on acquistion		¥ 1,252
Equity investment		5,223
Gain from Equity investment		3,971
Technical assets Member [Member]
Business Acquisition [Line Items]
Intangible assets acquired, technical assets		¥ 8,929
Intangible assetsuseful life,other intangible assets		21 years
Intangible assetsweighted average useful life, technical assets		21 years
Other Intangible Assets [Member]
Business Acquisition [Line Items]
Intangible assets acquired, technical assets		¥ 26
Intangible assetsuseful life,other intangible assets		5 years
Redlen Technologies Inc [Member] | Redlen [Member]
Business Acquisition [Line Items]
percentage of issued share, acquired	87.00%

Acquisitions (Summary of Fair V

Acquisitions (Summary of Fair Values of Assets Acquired and Liabilities Assumed at Acquisition Date, Toshiba Medical Systems Corporation (TMSC)) (Detail) - JPY (¥) ¥ in Millions	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Business Acquisition [Line Items]
Goodwill	¥ 953,850	¥ 915,564	¥ 898,661
Redlen Technologies Inc [Member]
Business Acquisition [Line Items]
Current assets	4,043
Intangible assets	8,955
Goodwill	28,826
Others	389
Assets acquired	42,213
Liabilities assumed	5,350
Net assets acquired	¥ 36,863

Goodwill and Other Intangible_3

Goodwill and Other Intangible Assets - Additional Information (Detail) - JPY (¥) ¥ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Goodwill and Intangible Assets Disclosure [Line Items]
Intangible assets developed or acquired	¥ 36,015	¥ 31,413
Weighted average amortization period for acquired intangible assets	9 years	6 years
Aggregate amortization expense	¥ 64,913	¥ 65,092	¥ 66,909
Estimated amortization expense for intangible assets, 2022	55,921
Estimated amortization expense for intangible assets, 2023	47,476
Estimated amortization expense for intangible assets, 2024	38,534
Estimated amortization expense for intangible assets, 2025	31,977
Estimated amortization expense for intangible assets, 2026	28,302
Computer software, intangible asset
Goodwill and Intangible Assets Disclosure [Line Items]
Intangible assets developed or acquired	¥ 25,965	¥ 29,137
Weighted average amortization period for acquired intangible assets	5 years	5 years

Goodwill and Other Intangible_4

Goodwill and Other Intangible Assets (Components of Intangible Assets Subject to Amortization) (Detail) - JPY (¥) ¥ in Millions	Dec. 31, 2021	Dec. 31, 2020
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	¥ 773,139	¥ 735,195
Accumulated amortization	473,134	418,413
Computer software, intangible asset
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	399,331	379,504
Accumulated amortization	300,905	279,372
Customer Relationships
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	158,513	155,648
Accumulated amortization	59,465	46,613
Patents and developed technology
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	133,923	124,315
Accumulated amortization	70,795	59,328
Trademarks
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	45,726	44,914
Accumulated amortization	21,350	17,800
License Fees
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	16,881	13,651
Accumulated amortization	10,098	6,065
Other
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	18,765	17,163
Accumulated amortization	¥ 10,521	¥ 9,235

Goodwill and Other Intangible_5

Goodwill and Other Intangible Assets (Changes in Carrying Amount of Goodwill by Segment) (Detail) - JPY (¥) ¥ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Goodwill [Line Items]
Goodwill - gross	¥ 987,175	¥ 947,980	¥ 929,951
Accumulated impairment losses	(33,325)	(32,416)	(31,290)
Balance at beginning of year	915,564	898,661
Goodwill acquired during the year	28,826	0
Translation adjustments and other	9,460	16,903
Balance at end of year	953,850	915,564
Printing Business Unit
Goodwill [Line Items]
Goodwill - gross	146,025	142,185	139,036
Accumulated impairment losses	(33,325)	(32,416)	(31,290)
Balance at beginning of year	109,769	107,746
Translation adjustments and other	2,931	2,023
Balance at end of year	112,700	109,769
Imaging Business Unit
Goodwill [Line Items]
Goodwill - gross	293,749	289,999	272,241
Balance at beginning of year	289,999	272,241
Translation adjustments and other	3,750	17,758
Balance at end of year	293,749	289,999
Medical Business Unit
Goodwill [Line Items]
Goodwill - gross	537,183	506,513	508,907
Balance at beginning of year	506,513	508,907
Goodwill acquired during the year	28,826	0
Translation adjustments and other	1,844	(2,394)
Balance at end of year	537,183	506,513
Industrial and Others Business Unit
Goodwill [Line Items]
Goodwill - gross	10,218	9,283	¥ 9,767
Balance at beginning of year	9,283	9,767
Translation adjustments and other	935	(484)
Balance at end of year	¥ 10,218	¥ 9,283

Short-Term Loans and Long-Ter_3

Short-Term Loans and Long-Term Debt - Additional Information (Detail) - JPY (¥) ¥ in Millions	Dec. 31, 2021	Dec. 31, 2020
Debt Disclosure [Abstract]
Short-term loans related to financial services	¥ 42,300	¥ 45,000
Weighted average interest rate on short-term borrowings	0.19%	0.26%
Unused borrowing capacity	¥ 750,000
Short-term loans, bank borrowings	¥ 1,301	¥ 1,461

Short-Term Loans and Long-Ter_4

Short-Term Loans and Long-Term Debt (Schedule of Long-Term Debt) (Detail) - JPY (¥) ¥ in Millions		Dec. 31, 2021	Dec. 31, 2020
Debt Disclosure [Abstract]
Loan from banks; bearing interest of 0.21% at December 31, 2021 and 0.09% at December 31, 2020	[1]	¥ 174,000	¥ 344,000
Other debt		7,040	6,608
Long-term Debt and Capital Lease Obligations, Including Current Maturities, Total		181,040	350,608
Less current portion		(1,290)	(345,774)
Long-term debt, excluding current installments (Notes 9 and 21)		¥ 179,750	¥ 4,834
[1]	Canon prepaid ¥170,000 million of the outstanding loan under the unsecured revolving credit facility contracts on December 28, 2021 before its due date. The remaining balance of ¥174,000 was refinanced with a new expiration date in December 2023 under the credit facilities. The outstanding loans under the credit facilities are ¥174,000 million at a floating interest of 0.21% and Canon has no unused credit facilities as of December 31, 2021.

Short-Term Loans and Long-Ter_5

Short-Term Loans and Long-Term Debt (Schedule of Long-Term Debt) (Parenthetical) (Detail) - JPY (¥) ¥ in Millions		12 Months Ended
		Dec. 31, 2021	Dec. 31, 2020
Debt Disclosure [Abstract]
Loan from the banks, maturity date after refinancing		Dec. 28, 2021
Loan principle prepaid		¥ 170,000
Loan from the banks	[1]	¥ 174,000	¥ 344,000
Loan from the banks, floating interest rate		0.21%	0.09%
Unused line of credit		¥ 0
[1]	Canon prepaid ¥170,000 million of the outstanding loan under the unsecured revolving credit facility contracts on December 28, 2021 before its due date. The remaining balance of ¥174,000 was refinanced with a new expiration date in December 2023 under the credit facilities. The outstanding loans under the credit facilities are ¥174,000 million at a floating interest of 0.21% and Canon has no unused credit facilities as of December 31, 2021.

Short-Term Loans and Long-Ter_6

Short-Term Loans and Long-Term Debt (Aggregate Annual Maturities of Long-Term Debt Outstanding) (Detail) - JPY (¥) ¥ in Millions	Dec. 31, 2021	Dec. 31, 2020
Long-term Debt and Capital Lease Obligations, Including Current Maturities [Abstract]
2022	¥ 1,290
2023	174,920
2024	609
2025	417
2026	237
Thereafter	3,567
Long-term Debt and Capital Lease Obligations, Including Current Maturities, Total	¥ 181,040	¥ 350,608

Trade Payables (Schedule of Tra

Trade Payables (Schedule of Trade Payables) (Detail) - JPY (¥) ¥ in Millions	Dec. 31, 2021	Dec. 31, 2020
Payables and Accruals [Abstract]
Notes	¥ 82,243	¥ 83,468
Accounts	256,361	220,341
Trade payables	¥ 338,604	¥ 303,809

Employee Retirement and Sever_3

Employee Retirement and Severance Benefits (Reconciliations of Beginning and Ending Balances of Benefit Obligations and Fair Value of Plan Assets) (Detail) - JPY (¥) ¥ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Japan
Change in benefit obligations:
Projected benefit obligations at beginning of year	¥ 911,121	¥ 925,390
Service cost	30,194	30,604	¥ 30,903
Interest cost	4,815	4,064	5,074
Actuarial (gain) loss	2,935	(11,432)
Benefits paid	(39,390)	(36,646)
Plan amendments	(41)	(859)
Curtailments and settlements		0
Projected benefit obligations at end of year	909,634	911,121	925,390
Change in plan assets:
Fair value of plan assets at beginning of year	724,039	704,169
Actual return on plan assets	52,688	36,060
Employer contributions	11,652	13,360
Benefits paid	(31,636)	(29,550)
Settlements		0
Fair value of plan assets at end of year	756,743	724,039	704,169
Funded status at end of year	(152,891)	(187,082)
Foreign Plans
Change in benefit obligations:
Projected benefit obligations at beginning of year	477,337	439,624
Service cost	3,827	5,303	6,264
Interest cost	5,965	6,087	8,643
Plan participants' contributions	658	860
Actuarial (gain) loss	(21,133)	43,202
Benefits paid	(13,471)	(12,351)
Plan amendments	(10,617)	(1,463)
Curtailments and settlements	(682)	(6,004)
Foreign currency exchange rate changes	34,346	2,079
Projected benefit obligations at end of year	476,230	477,337	439,624
Change in plan assets:
Fair value of plan assets at beginning of year	321,713	294,829
Actual return on plan assets	24,024	23,912
Employer contributions	32,130	13,605
Plan participants' contributions	658	860
Benefits paid	(13,471)	(12,351)
Settlements	1,743	(805)
Foreign currency exchange rate changes	28,115	1,663
Fair value of plan assets at end of year	394,912	321,713	¥ 294,829
Funded status at end of year	¥ (81,318)	¥ (155,624)

Employee Retirement and Sever_4

Employee Retirement and Severance Benefits - Additional Information (Detail) - JPY (¥) ¥ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2022
Employee Benefits Disclosure [Line Items]
Multiemployer pension plan contribution	¥ 4,822	¥ 4,224	¥ 4,321
Multiemployer plans collective bargaining arrangements, percentage of contribution		97.60%
Defined contribution pension plans, cost recognized	22,660	¥ 16,334	17,414
Fair Value, Inputs, Level 3
Employee Benefits Disclosure [Line Items]
Fair value of plan assets	40,296	1,356
Japan
Employee Benefits Disclosure [Line Items]
Fair value of plan assets	756,743	724,039	704,169
Expected contribution in defined benefit pension plan for the year ending December 31, 2022				¥ 15,942
Japan | Fair Value, Inputs, Level 3
Employee Benefits Disclosure [Line Items]
Fair value of plan assets	¥ 366	1,356
Japan | Equity Securities
Employee Benefits Disclosure [Line Items]
Defined benefit plan, target plan asset allocations	25.00%
Japan | Debt Securities
Employee Benefits Disclosure [Line Items]
Defined benefit plan, target plan asset allocations	50.00%
Japan | Life Insurance Company General Accounts
Employee Benefits Disclosure [Line Items]
Defined benefit plan, target plan asset allocations	25.00%
Fair value of plan assets	¥ 114,624	117,762
Foreign Plans
Employee Benefits Disclosure [Line Items]
Fair value of plan assets	394,912	321,713	¥ 294,829
Expected contribution in defined benefit pension plan for the year ending December 31, 2022				¥ 18,165
Foreign Plans | Fair Value, Inputs, Level 3
Employee Benefits Disclosure [Line Items]
Fair value of plan assets	¥ 39,930
Foreign Plans | Equity Securities
Employee Benefits Disclosure [Line Items]
Defined benefit plan, target plan asset allocations	20.00%
Foreign Plans | Debt Securities
Employee Benefits Disclosure [Line Items]
Defined benefit plan, target plan asset allocations	30.00%
Foreign Plans | Life Insurance Company General Accounts
Employee Benefits Disclosure [Line Items]
Fair value of plan assets	¥ 45,685	¥ 27,953
Foreign Plans | Life Insurance Company General Accounts | Fair Value, Inputs, Level 3
Employee Benefits Disclosure [Line Items]
Fair value of plan assets	¥ 39,398
Foreign Plans | Real estate assets
Employee Benefits Disclosure [Line Items]
Defined benefit plan, target plan asset allocations	50.00%

Employee Retirement and Sever_5

Employee Retirement and Severance Benefits (Amounts Recognized in Consolidated Balance Sheets) (Detail) - JPY (¥) ¥ in Millions	Dec. 31, 2021	Dec. 31, 2020
Defined Benefit Plan Disclosure [Line Items]
Accrued pension and severance cost	¥ (248,467)	¥ (345,897)
Japan
Defined Benefit Plan Disclosure [Line Items]
Other assets	2,911	2,684
Accrued expenses	(1,208)	(791)
Accrued pension and severance cost	(154,594)	(188,975)
Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position, Total	(152,891)	(187,082)
Foreign Plans
Defined Benefit Plan Disclosure [Line Items]
Other assets	13,596	2,236
Accrued expenses	(1,041)	(938)
Accrued pension and severance cost	(93,873)	(156,922)
Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position, Total	¥ (81,318)	¥ (155,624)

Employee Retirement and Sever_6

Employee Retirement and Severance Benefits (Amounts Recognized in Accumulated Other Comprehensive Income (Loss) Before Effect of Income Taxes) (Detail) - JPY (¥) ¥ in Millions	Dec. 31, 2021	Dec. 31, 2020
Japan
Accumulated Other Comprehensive Income (Loss) [Line Items]
Actuarial loss	¥ 156,028	¥ 192,931
Prior service credit	(20,371)	(28,633)
Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, before Tax, Total	135,657	164,298
Foreign Plans
Accumulated Other Comprehensive Income (Loss) [Line Items]
Actuarial loss	104,647	142,455
Prior service credit	(10,319)	(520)
Defined Benefit Plan, Accumulated Other Comprehensive (Income) Loss, before Tax, Total	¥ 94,328	¥ 141,935

Employee Retirement and Sever_7

Employee Retirement and Severance Benefits (Accumulated Benefit Obligation for All Defined Benefit Plans) (Detail) - JPY (¥) ¥ in Millions	Dec. 31, 2021	Dec. 31, 2020
Japan
Defined Benefit Plan Disclosure [Line Items]
Accumulated benefit obligation	¥ 883,462	¥ 879,136
Foreign Plans
Defined Benefit Plan Disclosure [Line Items]
Accumulated benefit obligation	¥ 462,306	¥ 460,536

Employee Retirement and Sever_8

Employee Retirement and Severance Benefits (Pension Plans with Projected and Accumulated Benefit Obligations in Excess of Plan Assets) (Detail) - JPY (¥) ¥ in Millions	Dec. 31, 2021	Dec. 31, 2020
Japan
Plans with projected benefit obligations in excess of plan assets:
Projected benefit obligations	¥ 895,898	¥ 897,669
Fair value of plan assets	739,581	707,708
Plans with accumulated benefit obligations in excess of plan assets:
Accumulated benefit obligations	870,314	874,327
Fair value of plan assets	739,581	707,708
Foreign Plans
Plans with projected benefit obligations in excess of plan assets:
Projected benefit obligations	473,860	475,137
Fair value of plan assets	391,054	318,079
Plans with accumulated benefit obligations in excess of plan assets:
Accumulated benefit obligations	455,164	453,120
Fair value of plan assets	¥ 386,223	¥ 312,748

Employee Retirement and Sever_9

Employee Retirement and Severance Benefits (Components of Net Periodic Benefit Cost) (Detail) - JPY (¥) ¥ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Japan
Defined Benefit Plan Disclosure [Line Items]
Service cost	¥ 30,194	¥ 30,604	¥ 30,903
Interest cost	4,815	4,064	5,074
Expected return on plan assets	(21,618)	(21,013)	(19,553)
Amortization of prior service credit	(8,303)	(8,732)	(11,877)
Amortization of actuarial loss	8,768	12,401	15,247
(Gain) loss on curtailments and settlements			(36)
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Total	13,856	17,324	19,758
Foreign Plans
Defined Benefit Plan Disclosure [Line Items]
Service cost	3,827	5,303	6,264
Interest cost	5,965	6,087	8,643
Expected return on plan assets	(15,221)	(12,006)	(11,919)
Amortization of prior service credit	(818)	(675)	(133)
Amortization of actuarial loss	7,341	6,122	4,345
(Gain) loss on curtailments and settlements	0	236	(2,197)
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Total	¥ 1,094	¥ 5,067	¥ 5,003

Employee Retirement and Seve_10

Employee Retirement and Severance Benefits (Other Changes in Plan Assets and Benefit Obligations Recognized in Other Comprehensive Income (Loss)) (Detail) - JPY (¥) ¥ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, other comprehensive income loss adjustment before tax	¥ (76,248)	¥ (7,587)	¥ (37)
Japan
Defined Benefit Plan Disclosure [Line Items]
Current year actuarial (gain) loss	(28,135)	(26,479)	(19,328)
Current year prior service credit	(41)	(859)
Amortization of actuarial loss	(8,768)	(12,401)	(15,247)
Amortization of prior service credit	8,303	8,732	11,877
Curtailments and settlements			(960)
Defined benefit plan, other comprehensive income loss adjustment before tax	(28,641)	(31,007)	(23,658)
Foreign Plans
Defined Benefit Plan Disclosure [Line Items]
Current year actuarial (gain) loss	(29,936)	31,296	28,882
Current year prior service credit	(10,617)	(1,463)	362
Amortization of actuarial loss	(7,341)	(6,122)	(4,345)
Amortization of prior service credit	818	675	133
Curtailments and settlements	(531)	(966)	(1,411)
Defined benefit plan, other comprehensive income loss adjustment before tax	¥ (47,607)	¥ 23,420	¥ 23,621

Employee Retirement and Seve_11

Employee Retirement and Severance Benefits (Weighted-Average Assumptions Used to Determine Benefit Obligations and Net Periodic Benefit Cost) (Detail)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Japan
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Benefit Obligation [Abstract]
Discount rate	0.50%	0.50%
Assumed rate of increase in future compensation levels	2.60%	2.60%
Interest crediting rate for cash balance plans	1.90%	1.90%
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract]
Discount rate	0.50%	0.50%	0.60%
Assumed rate of increase in future compensation levels	2.60%	2.60%	2.60%
Expected long-term rate of return on plan assets	3.00%	3.00%	3.00%
Interest crediting rate for cash balance plans	1.90%	1.90%	1.90%
Foreign Plans
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Benefit Obligation [Abstract]
Discount rate	1.50%	1.50%
Assumed rate of increase in future compensation levels	0.70%	0.90%
Interest crediting rate for cash balance plans	1.00%	1.00%
Defined Benefit Plan, Weighted Average Assumptions Used in Calculating Net Periodic Benefit Cost [Abstract]
Discount rate	1.50%	1.60%	2.40%
Assumed rate of increase in future compensation levels	0.90%	1.00%	1.90%
Expected long-term rate of return on plan assets	4.40%	4.80%	5.20%
Interest crediting rate for cash balance plans	1.00%	1.00%	1.00%

Employee Retirement and Seve_12

Employee Retirement and Severance Benefits (Fair Values of Company's Pension Plans Assets) (Detail) - JPY (¥) ¥ in Millions	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Fair Value, Inputs, Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair values of Company's pension plans assets	¥ 40,296	¥ 1,356
Japan
Defined Benefit Plan Disclosure [Line Items]
Fair values of Company's pension plans assets	756,743	724,039	¥ 704,169
Japan | Pooled Equity Securities Funds
Defined Benefit Plan Disclosure [Line Items]
Fair values of Company's pension plans assets	180,286	168,745
Japan | Government Bonds
Defined Benefit Plan Disclosure [Line Items]
Fair values of Company's pension plans assets	133,691	136,771
Japan | Japanese Companies Equity Securities
Defined Benefit Plan Disclosure [Line Items]
Fair values of Company's pension plans assets	95,698	80,201
Japan | Foreign Corporate Equity Securities
Defined Benefit Plan Disclosure [Line Items]
Fair values of Company's pension plans assets	12,746	9,807
Japan | Municipal Bonds
Defined Benefit Plan Disclosure [Line Items]
Fair values of Company's pension plans assets	1,264	1,126
Japan | Corporate Bonds
Defined Benefit Plan Disclosure [Line Items]
Fair values of Company's pension plans assets	19,373	15,617
Japan | Pooled Debt Securities Funds
Defined Benefit Plan Disclosure [Line Items]
Fair values of Company's pension plans assets	145,348	140,825
Japan | Mortgage and Asset Backed Securities
Defined Benefit Plan Disclosure [Line Items]
Fair values of Company's pension plans assets	11,449	8,308
Japan | Life Insurance Company General Accounts
Defined Benefit Plan Disclosure [Line Items]
Fair values of Company's pension plans assets	114,624	117,762
Japan | Other Assets
Defined Benefit Plan Disclosure [Line Items]
Fair values of Company's pension plans assets	28,547	30,087
Japan | Investment Measured at Net Asset Value
Defined Benefit Plan Disclosure [Line Items]
Fair values of Company's pension plans assets	13,717	14,790
Japan | Fair Value, Inputs, Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair values of Company's pension plans assets	242,135	226,779
Japan | Fair Value, Inputs, Level 1 | Government Bonds
Defined Benefit Plan Disclosure [Line Items]
Fair values of Company's pension plans assets	133,691	136,771
Japan | Fair Value, Inputs, Level 1 | Japanese Companies Equity Securities
Defined Benefit Plan Disclosure [Line Items]
Fair values of Company's pension plans assets	95,698	80,201
Japan | Fair Value, Inputs, Level 1 | Foreign Corporate Equity Securities
Defined Benefit Plan Disclosure [Line Items]
Fair values of Company's pension plans assets	12,746	9,807
Japan | Fair Value, Inputs, Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair values of Company's pension plans assets	500,525	481,114
Japan | Fair Value, Inputs, Level 2 | Pooled Equity Securities Funds
Defined Benefit Plan Disclosure [Line Items]
Fair values of Company's pension plans assets	180,286	168,745
Japan | Fair Value, Inputs, Level 2 | Municipal Bonds
Defined Benefit Plan Disclosure [Line Items]
Fair values of Company's pension plans assets	1,264	1,126
Japan | Fair Value, Inputs, Level 2 | Corporate Bonds
Defined Benefit Plan Disclosure [Line Items]
Fair values of Company's pension plans assets	19,373	15,617
Japan | Fair Value, Inputs, Level 2 | Pooled Debt Securities Funds
Defined Benefit Plan Disclosure [Line Items]
Fair values of Company's pension plans assets	145,348	140,825
Japan | Fair Value, Inputs, Level 2 | Mortgage and Asset Backed Securities
Defined Benefit Plan Disclosure [Line Items]
Fair values of Company's pension plans assets	11,449	8,308
Japan | Fair Value, Inputs, Level 2 | Life Insurance Company General Accounts
Defined Benefit Plan Disclosure [Line Items]
Fair values of Company's pension plans assets	114,624	117,762
Japan | Fair Value, Inputs, Level 2 | Other Assets
Defined Benefit Plan Disclosure [Line Items]
Fair values of Company's pension plans assets	28,181	28,731
Japan | Fair Value, Inputs, Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair values of Company's pension plans assets	366	1,356
Japan | Fair Value, Inputs, Level 3 | Other Assets
Defined Benefit Plan Disclosure [Line Items]
Fair values of Company's pension plans assets	366	1,356
Foreign Plans
Defined Benefit Plan Disclosure [Line Items]
Fair values of Company's pension plans assets	394,912	321,713	¥ 294,829
Foreign Plans | Pooled Equity Securities Funds
Defined Benefit Plan Disclosure [Line Items]
Fair values of Company's pension plans assets	43,026	37,538
Foreign Plans | Japanese Companies Equity Securities
Defined Benefit Plan Disclosure [Line Items]
Fair values of Company's pension plans assets	0
Foreign Plans | Foreign Corporate Equity Securities
Defined Benefit Plan Disclosure [Line Items]
Fair values of Company's pension plans assets	11,628	10,267
Foreign Plans | Municipal Bonds
Defined Benefit Plan Disclosure [Line Items]
Fair values of Company's pension plans assets	2,899	2,324
Foreign Plans | Corporate Bonds
Defined Benefit Plan Disclosure [Line Items]
Fair values of Company's pension plans assets	7,821	6,375
Foreign Plans | Pooled Debt Securities Funds
Defined Benefit Plan Disclosure [Line Items]
Fair values of Company's pension plans assets	138,687	108,499
Foreign Plans | Mortgage and Asset Backed Securities
Defined Benefit Plan Disclosure [Line Items]
Fair values of Company's pension plans assets	6,826	2,696
Foreign Plans | Life Insurance Company General Accounts
Defined Benefit Plan Disclosure [Line Items]
Fair values of Company's pension plans assets	45,685	27,953
Foreign Plans | Other Assets
Defined Benefit Plan Disclosure [Line Items]
Fair values of Company's pension plans assets	107,189	102,159
Foreign Plans | Investment Measured at Net Asset Value
Defined Benefit Plan Disclosure [Line Items]
Fair values of Company's pension plans assets	31,151	23,902
Foreign Plans | Fair Value, Inputs, Level 1
Defined Benefit Plan Disclosure [Line Items]
Fair values of Company's pension plans assets	11,628	10,267
Foreign Plans | Fair Value, Inputs, Level 1 | Japanese Companies Equity Securities
Defined Benefit Plan Disclosure [Line Items]
Fair values of Company's pension plans assets	0
Foreign Plans | Fair Value, Inputs, Level 1 | Foreign Corporate Equity Securities
Defined Benefit Plan Disclosure [Line Items]
Fair values of Company's pension plans assets	11,628	10,267
Foreign Plans | Fair Value, Inputs, Level 2
Defined Benefit Plan Disclosure [Line Items]
Fair values of Company's pension plans assets	312,203	287,544
Foreign Plans | Fair Value, Inputs, Level 2 | Pooled Equity Securities Funds
Defined Benefit Plan Disclosure [Line Items]
Fair values of Company's pension plans assets	43,026	37,538
Foreign Plans | Fair Value, Inputs, Level 2 | Foreign Corporate Equity Securities
Defined Benefit Plan Disclosure [Line Items]
Fair values of Company's pension plans assets	0
Foreign Plans | Fair Value, Inputs, Level 2 | Municipal Bonds
Defined Benefit Plan Disclosure [Line Items]
Fair values of Company's pension plans assets	2,899	2,324
Foreign Plans | Fair Value, Inputs, Level 2 | Corporate Bonds
Defined Benefit Plan Disclosure [Line Items]
Fair values of Company's pension plans assets	7,821	6,375
Foreign Plans | Fair Value, Inputs, Level 2 | Pooled Debt Securities Funds
Defined Benefit Plan Disclosure [Line Items]
Fair values of Company's pension plans assets	138,687	108,499
Foreign Plans | Fair Value, Inputs, Level 2 | Mortgage and Asset Backed Securities
Defined Benefit Plan Disclosure [Line Items]
Fair values of Company's pension plans assets	6,826	2,696
Foreign Plans | Fair Value, Inputs, Level 2 | Life Insurance Company General Accounts
Defined Benefit Plan Disclosure [Line Items]
Fair values of Company's pension plans assets	6,287	27,953
Foreign Plans | Fair Value, Inputs, Level 2 | Other Assets
Defined Benefit Plan Disclosure [Line Items]
Fair values of Company's pension plans assets	106,657	¥ 102,159
Foreign Plans | Fair Value, Inputs, Level 3
Defined Benefit Plan Disclosure [Line Items]
Fair values of Company's pension plans assets	39,930
Foreign Plans | Fair Value, Inputs, Level 3 | Life Insurance Company General Accounts
Defined Benefit Plan Disclosure [Line Items]
Fair values of Company's pension plans assets	39,398
Foreign Plans | Fair Value, Inputs, Level 3 | Other Assets
Defined Benefit Plan Disclosure [Line Items]
Fair values of Company's pension plans assets	¥ 532

Employee Retirement and Seve_13

Employee Retirement and Severance Benefits (Fair Values of Company's Pension Plans Assets) (Parenthetical) (Detail) - JPY (¥) ¥ in Millions	Dec. 31, 2021	Dec. 31, 2020
Pooled Equity Securities Funds
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Amount of Employer and Related Party Securities Included in Plan Assets	¥ 234	¥ 282
Pooled Equity Securities Funds | Japanese Companies Equity Securities | Japan
Defined Benefit Plan Disclosure [Line Items]
Plan assets investment allocation	30.00%	30.00%
Pooled Equity Securities Funds | Foreign Corporate Equity Securities | Japan
Defined Benefit Plan Disclosure [Line Items]
Plan assets investment allocation	70.00%	70.00%
Government Bonds | Japanese Government Bonds | Japan
Defined Benefit Plan Disclosure [Line Items]
Plan assets investment allocation	80.00%	85.00%
Government Bonds | Foreign Government Bonds | Japan
Defined Benefit Plan Disclosure [Line Items]
Plan assets investment allocation	20.00%	15.00%
Pooled Debt Securities Funds | Japanese Government Bonds | Japan
Defined Benefit Plan Disclosure [Line Items]
Plan assets investment allocation	25.00%	25.00%
Pooled Debt Securities Funds | Foreign Government Bonds | Japan
Defined Benefit Plan Disclosure [Line Items]
Plan assets investment allocation	55.00%	55.00%
Pooled Debt Securities Funds | Foreign Government Bonds | Foreign Plans
Defined Benefit Plan Disclosure [Line Items]
Plan assets investment allocation	75.00%	60.00%
Pooled Debt Securities Funds | Japanese Municipal Bonds Securities | Japan
Defined Benefit Plan Disclosure [Line Items]
Plan assets investment allocation	5.00%	5.00%
Pooled Debt Securities Funds | Corporate Bonds | Japan
Defined Benefit Plan Disclosure [Line Items]
Plan assets investment allocation	15.00%	15.00%
Pooled Debt Securities Funds | Corporate Bonds | Foreign Plans
Defined Benefit Plan Disclosure [Line Items]
Plan assets investment allocation	25.00%	40.00%

Employee Retirement and Seve_14

Employee Retirement and Severance Benefits (Estimated Future Benefit Payments) (Detail) ¥ in Millions	Dec. 31, 2021JPY (¥)
Japan
Defined Benefit Plan Disclosure [Line Items]
Year ending December 31, 2022	¥ 44,169
Year ending December 31, 2023	44,772
Year ending December 31, 2024	44,699
Year ending December 31, 2025	45,715
Year ending December 31, 2026	44,479
Year ending December 31, 2027 - 2031	228,342
Foreign Plans
Defined Benefit Plan Disclosure [Line Items]
Year ending December 31, 2022	15,228
Year ending December 31, 2023	15,887
Year ending December 31, 2024	17,151
Year ending December 31, 2025	18,145
Year ending December 31, 2026	19,199
Year ending December 31, 2027 - 2031	¥ 116,447

Income Taxes (Components of Inc

Income Taxes (Components of Income Before Income Taxes and Current and Deferred Income Tax Expense) (Detail) - JPY (¥) ¥ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Income Taxes [Line Items]
Income before income taxes	¥ 302,706	¥ 130,280	¥ 195,493
Income taxes:
Current	81,692	49,879	62,669
Deferred	(9,826)	(15,542)	(6,523)
Income taxes	71,866	34,337	56,146
Domestic Country
Income Taxes [Line Items]
Income before income taxes	165,927	48,186	107,082
Income taxes:
Current	47,491	24,063	39,483
Deferred	6,883	(6,007)	(4,276)
Income taxes	54,374	18,056	35,207
Foreign Country
Income Taxes [Line Items]
Income before income taxes	136,779	82,094	88,411
Income taxes:
Current	34,201	25,816	23,186
Deferred	(16,709)	(9,535)	(2,247)
Income taxes	¥ 17,492	¥ 16,281	¥ 20,939

Income Taxes - Additional Infor

Income Taxes - Additional Information (Detail) - JPY (¥) ¥ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Income Taxes [Line Items]
Effective income tax rate	31.00%	31.00%	31.00%
Net increase (decrease) in the total valuation allowance	¥ 11,679	¥ 3,074	¥ 3,056
Net operating losses which can be carried forward for income tax purposes to reduce future taxable income	175,581
Deferred tax liabilities not recognized for a portion of undistributed earnings of foreign subsidiaries	16,162
Undistributed earnings of subsidiaries for which tax liabilities were not recognized earlier	875,208
Total amounts of unrecognized tax benefits that would reduce the effective tax rate, if recognized	¥ 9,813	¥ 8,572

Income Taxes (Reconciliation of

Income Taxes (Reconciliation of Japanese Statutory Income Tax Rate and Effective Income Tax Rate) (Detail)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Income Tax Disclosure [Abstract]
Japanese statutory income tax rate	31.00%	31.00%	31.00%
Increase (reduction) in income taxes resulting from:
Expenses not deductible for tax purposes	0.70%	2.30%	1.70%
Income of foreign subsidiaries taxed at lower than Japanese statutory tax rate	(3.90%)	(5.80%)	(2.90%)
Tax credit for research and development expenses	(3.20%)	(1.70%)	(2.30%)
Change in valuation allowance	(3.90%)	2.40%	(1.60%)
Deferred tax liabilities on undistributed earnings of foreign subsidiaries	4.50%	2.60%	2.40%
Tax credit at foreign subsidiaries	(0.30%)	(1.30%)	(1.10%)
Effect of enacted changes in tax laws	(1.00%)	(1.50%)	(0.20%)
Other	(0.20%)	(1.60%)	1.70%
Effective income tax rate	23.70%	26.40%	28.70%

Income Taxes (Captions of Net D

Income Taxes (Captions of Net Deferred Income Tax Assets and Liabilities Included in Consolidated Balance Sheets) (Detail) - JPY (¥) ¥ in Millions	Dec. 31, 2021	Dec. 31, 2020
Income Tax Disclosure [Abstract]
Other assets	¥ 138,507	¥ 154,226
Other noncurrent liabilities	(43,402)	(48,247)
Net deferred tax assets	¥ 95,105	¥ 105,979

Income Taxes (Tax Effects of Te

Income Taxes (Tax Effects of Temporary Differences to Deferred Tax Assets and Deferred Tax Liabilities) (Detail) - JPY (¥) ¥ in Millions	Dec. 31, 2021	Dec. 31, 2020
Deferred tax assets:
Inventories	¥ 11,263	¥ 10,551
Accrued business tax	3,387	1,629
Accrued pension and severance cost	67,752	95,386
Research and development – costs capitalized for tax purposes	5,004	4,989
Property, plant and equipment	35,658	34,923
Operating lease liabilities	17,328	20,163
Accrued expenses	29,331	28,243
Net operating losses carried forward	33,873	29,591
Other	48,621	42,741
Deferred Tax Assets, Gross, Total	252,217	268,216
Less valuation allowance	(19,073)	(30,752)
Total deferred tax assets	233,144	237,464
Deferred tax liabilities:
Undistributed earnings of foreign subsidiaries	(19,677)	(9,147)
Tax deductible reserve	(4,007)	(4,040)
Financing lease revenue	(14,602)	(15,041)
Operating lease right-of-use assets	(17,066)	(19,425)
Intangible assets	(51,173)	(54,948)
Other	(31,514)	(28,884)
Total deferred tax liabilities	(138,039)	(131,485)
Net deferred tax assets	¥ 95,105	¥ 105,979

Income Taxes (Amounts and Perio

Income Taxes (Amounts and Period Ranges of Operating Losses Carried Forward Available to Reduce Future Taxable Income) (Detail) ¥ in Millions	Dec. 31, 2021JPY (¥)
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	¥ 175,581
Within one year
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	1,206
After one year through five years
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	13,869
After five years through ten years
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	44,316
After ten years through twenty years
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	8,223
Indefinite period
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	¥ 107,967

Income Taxes (Reconciliation _2

Income Taxes (Reconciliation of Beginning and Ending Amount of Unrecognized Tax Benefits) (Detail) - JPY (¥) ¥ in Millions		12 Months Ended
		Dec. 31, 2021		Dec. 31, 2020		Dec. 31, 2019
Income Tax Disclosure [Abstract]
Balance at beginning of year		¥ 8,572	[1]	¥ 8,120	[1]	¥ 8,649
Additions for tax positions of the current year		1,168		0		0
Additions for tax positions of prior years		216		208		204
Reductions for tax positions of prior years		0		(49)		(44)
Settlements with tax authorities		(62)		0		(402)
Other		(81)		293		(287)
Balance at end of year	[1]	9,813		8,572		8,120
Unrecognized tax benefits, offset		¥ 1,695		¥ 1,412		¥ 933
[1]	The unrecognized tax benefits were offset by deferred tax assets in the amount of ¥1,695 million, ¥1,412 million and ¥933 million as of December 31, 2021, 2020 and 2019, respectively, and reported under “other noncurrent liabilities” on the consolidated balance sheets.

Legal Reserve and Retained Ea_2

Legal Reserve and Retained Earnings - Additional Information (Detail) ¥ in Millions	12 Months Ended
	Dec. 31, 2021JPY (¥)
Uncategorized [Abstract]
Percentage of legal reserve appropriated from distributions from retained earnings paid by Canon Inc. and its subsidiaries	10.00%
Appropriations not required if percentage of additional paid in capital and legal reserve equals specific percentage of respective stated capital	25.00%
Year end dividends approved by shareholders	¥ 57,517
Amount available for dividends under the Corporation Law of Japan	858,455
Retained earnings included Canon's equity in undistributed earnings of affiliated companies accounted for by the equity method	¥ 17,858

Other Comprehensive Income (L_3

Other Comprehensive Income (Loss) (Changes in Accumulated Other Comprehensive Income (Loss)) (Detail) - JPY (¥) ¥ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance at beginning of year	¥ 2,784,041	¥ 2,883,980	¥ 3,010,145
Equity transactions with noncontrolling interests and other	1,663	751	(1,596)
Net change during the year	175,975	(15,002)	(36,855)
Balance at end of year	3,098,429	2,784,041	2,883,980
Foreign currency translation adjustments
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance at beginning of year	(113,646)	(96,282)	(63,815)
Equity transactions with noncontrolling interests and other		(9)	(424)
Other comprehensive income (loss) before reclassifications	119,689	(17,355)	(31,889)
Amounts reclassified from accumulated other comprehensive income (loss)	(524)	0	(154)
Net change during the year	119,165	(17,364)	(32,467)
Balance at end of year	5,519	(113,646)	(96,282)
Gains and losses on derivative instruments
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance at beginning of year	100	(887)	308
Other comprehensive income (loss) before reclassifications	(3,330)	(1,199)	(1,723)
Amounts reclassified from accumulated other comprehensive income (loss)	2,336	2,186	650
Net change during the year	(994)	987	(1,073)
Balance at end of year	(894)	100	(887)
Gains and losses on derivative instruments | ASU 2017-12 | Cumulative effects of accounting standard update - adoption of ASU
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance at beginning of year		(122)
Balance at end of year			(122)
Pension liability adjustments
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance at beginning of year	(211,243)	(211,273)	(205,564)
Other comprehensive income (loss) before reclassifications	49,759	(7,530)	(12,763)
Amounts reclassified from accumulated other comprehensive income (loss)	5,065	7,560	7,054
Net change during the year	54,824	30	(5,709)
Balance at end of year	(156,419)	(211,243)	(211,273)
AOCI Attributable to Parent
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance at beginning of year	(324,789)	(308,442)	(269,071)
Equity transactions with noncontrolling interests and other		(9)	(424)
Other comprehensive income (loss) before reclassifications	166,118	(26,084)	(46,375)
Amounts reclassified from accumulated other comprehensive income (loss)	6,877	9,746	7,550
Net change during the year	172,995	(16,347)	(39,249)
Balance at end of year	¥ (151,794)	(324,789)	(308,442)
AOCI Attributable to Parent | ASU 2017-12 | Cumulative effects of accounting standard update - adoption of ASU
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance at beginning of year		¥ (122)
Balance at end of year			¥ (122)

Other Comprehensive Income (L_4

Other Comprehensive Income (Loss) (Reclassifications Out of Accumulated Other Comprehensive Income (Loss)) (Detail) - JPY (¥) ¥ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Selling, general and administrative expenses	¥ 1,058,536	¥ 993,009	¥ 1,137,110
Other, net	(19,203)	(17,664)	(16,585)
Net Sales	3,513,357	3,160,243	3,593,299
Income taxes	71,866	34,337	56,146
Consolidated net income	(230,840)	(95,943)	(139,347)
Net income attributable to noncontrolling interests	16,122	12,625	14,383
Net income attributable to Canon Inc.	(214,718)	(83,318)	(124,964)
Total amount reclassified, net of tax and noncontrolling interests	6,877	9,746	7,550
Reclassification out of Accumulated Other Comprehensive Income | Foreign currency translation adjustments
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Selling, general and administrative expenses	(759)
Other, net			(154)
Income taxes	235
Consolidated net income	(524)		(154)
Net income attributable to Canon Inc.	(524)		(154)
Reclassification out of Accumulated Other Comprehensive Income | Gains and losses on derivative instruments
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net Sales	3,285	3,034	661
Income taxes	(959)	(775)	(2)
Consolidated net income	2,326	2,259	659
Net income attributable to noncontrolling interests	10	(73)	(9)
Net income attributable to Canon Inc.	2,336	2,186	650
Reclassification out of Accumulated Other Comprehensive Income | Pension liability adjustments
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Other, net	7,519	10,082	9,953
Income taxes	(1,625)	(2,484)	(2,523)
Consolidated net income	5,894	7,598	7,430
Net income attributable to noncontrolling interests	(829)	(38)	(376)
Net income attributable to Canon Inc.	¥ 5,065	¥ 7,560	¥ 7,054

Other Comprehensive Income (L_5

Other Comprehensive Income (Loss) (Tax Effects Allocated to Other Comprehensive Income (Loss) and Reclassification Adjustments, Including Amounts Attributable to Noncontrolling Interests) (Detail) - JPY (¥) ¥ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Foreign currency translation adjustments, Before-tax amount
Amount arising during the year, Before-tax amount	¥ 122,075	¥ (17,583)	¥ (32,396)
Reclassification adjustments for gains and losses realized in net income, Before-tax amount	(759)		(154)
Net change during the year, Before-tax amount	121,316	(17,583)	(32,550)
Net gains and losses on derivative instruments, Before-tax amount:
Amount arising during the year, Before-tax amount	(4,596)	(1,731)	(2,180)
Pension liability adjustments, Before-tax amount:
Amount arising during the year, Before-tax amount	68,729	(2,495)	(9,916)
Reclassification adjustments for gains and losses realized in net income, Before-tax amount	7,519	10,082	9,953
Net change during the year, Before-tax amount	76,248	7,587	37
Foreign currency translation adjustments, Tax (expense) or benefit
Amount arising during the year, Tax (expense) or benefit	(1,112)	229	393
Net change during the year, Tax (expense) or benefit	(877)	229	393
Pension liability adjustments, Tax (expense) or benefit:
Amount arising during the year, Tax (expense) or benefit	(18,115)	(3,721)	(1,144)
Reclassification adjustments for gains and losses realized in net income, Tax (expense) or benefit	(1,625)	(2,484)	(2,523)
Net change during the year, Tax (expense) or benefit	(19,740)	(6,205)	(3,667)
Foreign currency translation adjustments, Net-of-tax amount
Amount arising during the year, Net-of-tax amount	120,963	(17,354)	(32,003)
Reclassification adjustments for gains and losses realized in net income, Net-of-tax amount	(524)		(154)
Net change during the year, Net-of-tax amount	120,439	(17,354)	(32,157)
Net gains and losses on derivative instruments, Net-of-tax amount:
Reclassification adjustments for gains and losses realized in net income, Net-of-tax amount	2,326	2,259	659
Net change during the year, Net-of-tax amount	(972)	970	(1,068)
Pension liability adjustments, Net-of-tax amount:
Amount arising during the year, Net-of-tax amount	50,614	(6,216)	(11,060)
Reclassification adjustments for gains and losses realized in net income, Net-of-tax amount	5,894	7,598	7,430
Net change during the year, Net-of-tax amount	56,508	1,382	(3,630)
Other Comprehensive Income (Loss), Before-tax amount	196,253	(8,693)	(34,032)
Other comprehensive income (loss), Tax (expense) or benefit	(20,278)	(6,309)	(2,823)
Other comprehensive income (loss), Net-of-tax amount	175,975	(15,002)	(36,855)
Accounting Standards Update 2019-04 [Member]
Net gains and losses on derivative instruments, Before-tax amount:
Reclassification adjustments for gains and losses realized in net income, Before-tax amount	3,285	3,034	661
Net change during the year, Before-tax amount	(1,311)	1,303	(1,519)
Foreign currency translation adjustments, Tax (expense) or benefit
Reclassification adjustments for gains and losses realized in net income, Tax (expense) or benefit	235
Net gains and losses on derivative instruments, Tax (expense) or benefit:
Amount arising during the year, Tax (expense) or benefit	1,298	442	453
Reclassification adjustments for gains and losses realized in net income, Tax (expense) or benefit	(959)	(775)	(2)
Net change during the year, Tax (expense) or benefit	339	(333)	451
Net gains and losses on derivative instruments, Net-of-tax amount:
Amount arising during the year, Net-of-tax amount	¥ (3,298)	¥ (1,289)	¥ (1,727)

Revenue - Additional Informatio

Revenue - Additional Information (Detail) - JPY (¥) ¥ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Disaggregation of Revenue [Line Items]
Deferred revenue, revenue recognized	¥ 112,232
Revenue remaining performance obligation	¥ 150,833
Revenue remaining performance obligation, percentage within a year	66.00%
Revenue remaining performance obligation, percentage within two year	34.00%
Fixed maintenance service contract as percentage of service revenue	13.00%
Fixed maintenance service contract remaining period	2 years
Other Current Liabilities
Disaggregation of Revenue [Line Items]
Deferred revenue	¥ 132,087	¥ 135,455
Prepaid expenses and other current assets
Disaggregation of Revenue [Line Items]
Contract assets	¥ 44,722	¥ 42,752

Revenue (Schedule of Disaggrega

Revenue (Schedule of Disaggregated Revenue By Timing) (Detail) - JPY (¥) ¥ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Disaggregation of Revenue [Line Items]
Net sales	¥ 3,513,357	¥ 3,160,243	¥ 3,593,299
Printing Business Unit
Disaggregation of Revenue [Line Items]
Net sales	1,934,012	1,800,898	2,089,024
Imaging System Business Unit
Disaggregation of Revenue [Line Items]
Net sales	651,494	539,560	660,105
Medical System Business Unit
Disaggregation of Revenue [Line Items]
Net sales	480,029	435,368	437,456
Industrial and Others Business Unit
Disaggregation of Revenue [Line Items]
Net sales	449,915	385,177	405,114
Corporate and Eliminations
Disaggregation of Revenue [Line Items]
Net sales	(2,093)	(760)	1,600
Operating Segments
Disaggregation of Revenue [Line Items]
Net sales	3,513,357	3,160,243	3,593,299
Operating Segments | Printing Business Unit
Disaggregation of Revenue [Line Items]
Net sales	1,938,847	1,804,427	2,092,464
Operating Segments | Imaging System Business Unit
Disaggregation of Revenue [Line Items]
Net sales	653,532	541,314	661,706
Operating Segments | Medical System Business Unit
Disaggregation of Revenue [Line Items]
Net sales	480,362	436,074	438,525
Operating Segments | Industrial and Others Business Unit
Disaggregation of Revenue [Line Items]
Net sales	545,742	461,522	493,784
Operating Segments | Corporate and Eliminations
Disaggregation of Revenue [Line Items]
Net sales	(105,126)	(83,094)	(93,180)
Operating Segments | Revenue Recognized at a Point in Time
Disaggregation of Revenue [Line Items]
Net sales	2,730,003	2,392,231	2,760,816
Operating Segments | Revenue Recognized at a Point in Time | Printing Business Unit
Disaggregation of Revenue [Line Items]
Net sales	1,419,043	1,316,556	1,520,393
Operating Segments | Revenue Recognized at a Point in Time | Imaging System Business Unit
Disaggregation of Revenue [Line Items]
Net sales	646,849	534,685	651,629
Operating Segments | Revenue Recognized at a Point in Time | Medical System Business Unit
Disaggregation of Revenue [Line Items]
Net sales	329,323	287,849	290,702
Operating Segments | Revenue Recognized at a Point in Time | Industrial and Others Business Unit
Disaggregation of Revenue [Line Items]
Net sales	439,914	336,235	391,272
Operating Segments | Revenue Recognized at a Point in Time | Corporate and Eliminations
Disaggregation of Revenue [Line Items]
Net sales	(105,126)	(83,094)	(93,180)
Operating Segments | Revenue Recognized Overtime
Disaggregation of Revenue [Line Items]
Net sales	783,354	768,012	832,483
Operating Segments | Revenue Recognized Overtime | Printing Business Unit
Disaggregation of Revenue [Line Items]
Net sales	519,804	487,871	572,071
Operating Segments | Revenue Recognized Overtime | Imaging System Business Unit
Disaggregation of Revenue [Line Items]
Net sales	6,683	6,629	10,077
Operating Segments | Revenue Recognized Overtime | Medical System Business Unit
Disaggregation of Revenue [Line Items]
Net sales	151,039	148,225	147,823
Operating Segments | Revenue Recognized Overtime | Industrial and Others Business Unit
Disaggregation of Revenue [Line Items]
Net sales	¥ 105,828	¥ 125,287	¥ 102,512

Stock-Based Compensation - Addi

Stock-Based Compensation - Additional Information (Detail) - JPY (¥) ¥ / shares in Units, ¥ in Millions	Apr. 28, 2021	May 01, 2020	Mar. 25, 2020	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Number of common stock shares authorized to be acquired under stock options granted	43,700	88,600	10,300
Exercisable period (in years)	30 years	30 years	30 years
Grant-date fair value per share of stock options				¥ 2,227
Recognized compensation cost for stock options				¥ 97	¥ 147	¥ 265
Fair value of shares vested				97	147	265
Cash received from the exercise of stock options				¥ 0	¥ 0	¥ 0
Stock option granted on May 1, 2020
Grant-date fair value per share of stock options					¥ 1,459
Stock option granted on March 25, 2020
Grant-date fair value per share of stock options					¥ 1,703

Stock-Based Compensation (Sched

Stock-Based Compensation (Schedule of Fair Value Assumptions Used to Estimate Fair Value of Option) (Detail)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Granted Date One [Member]
Expected term of option (in years)	5 years	6 years
Expected volatility	24.83%	20.32%
Dividend yield	3.04%	6.25%
Risk-free interest rate	(0.10%)	(0.12%)
Granted Date Two [Member]
Expected term of option (in years)		6 years
Expected volatility		20.92%
Dividend yield		6.97%
Risk-free interest rate		(0.17%)

Stock-Based Compensation (Summa

Stock-Based Compensation (Summary of Option Activity Under Stock Option Plans) (Detail) - JPY (¥) ¥ / shares in Units, ¥ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Shares
Outstanding at beginning of year	247,600	185,800	74,000
Granted	43,700	98,900	116,300
Exercised	(4,800)	(37,100)	(4,500)
Outstanding at end of year	286,500	247,600	185,800	74,000
Exercisable at end of year	286,500
Weighted-Average Exercise Price
Outstanding at beginning of year	¥ 1	¥ 1	¥ 1
Granted	1	1	1
Exercised	1	1	1
Outstanding at end of year	1	¥ 1	¥ 1	¥ 1
Exercisable at end of year	¥ 1
Weighted-Average Remaining Contractual Term
Outstanding at end of year	27 years 9 months 18 days	28 years 4 months 24 days	29 years	29 years 3 months 18 days
Exercisable at end of year	27 years 9 months 18 days
Aggregate Intrinsic Value
Outstanding at beginning of year	¥ 324	¥ 555	¥ 222
Outstanding at end of year	802	¥ 324	¥ 555	¥ 222
Exercisable at end of year	¥ 802

Net Income Attributable to Ca_3

Net Income Attributable to Canon Inc. Shareholders per Share (Reconciliation of Numerators and Denominators of Basic and Diluted Net Income Attributable to Canon Inc. Shareholders Per Share Computations) (Detail) - JPY (¥) ¥ / shares in Units, ¥ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Earnings Per Share Basic Numerator [Abstract]
Basic net income attributable to Canon Inc.	¥ 214,718	¥ 83,318	¥ 124,964
Diluted net income attributable to Canon Inc.	¥ 214,714	¥ 83,315	¥ 124,962
Average common shares outstanding	1,045,632,588	1,049,802,197	1,069,956,767
Stock options	277,066	229,691	158,173
Diluted common shares outstanding	1,045,909,654	1,050,031,888	1,070,114,940
Net income attributable to Canon Inc. shareholders per share:
Basic	¥ 205.35	¥ 79.37	¥ 116.79
Diluted	¥ 205.29	¥ 79.35	¥ 116.77

Derivatives and Hedging Activ_3

Derivatives and Hedging Activities (Contract Amounts of Foreign Exchange Contracts) (Detail) - JPY (¥) ¥ in Millions	Dec. 31, 2021	Dec. 31, 2020
To sell foreign currencies
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Contract amounts of foreign exchange contracts	¥ 169,392	¥ 137,721
To buy foreign currencies
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Contract amounts of foreign exchange contracts	¥ 27,453	¥ 27,220

Derivatives and Hedging Activ_4

Derivatives and Hedging Activities (Fair Value of Derivative Instruments in Consolidated Balance Sheets) (Detail) - Foreign Exchange Contract - JPY (¥) ¥ in Millions	Dec. 31, 2021	Dec. 31, 2020
Prepaid Expenses and Other Current Assets
Derivatives, Fair Value [Line Items]
Derivative assets designated as Hedging Instrument	¥ 42	¥ 426
Derivative assets not designated as Hedging Instrument	23	107
Other Current Liabilities
Derivatives, Fair Value [Line Items]
Derivatives liabilities designated as hedging instruments	777	416
Derivatives liabilities not designated as hedging instruments	¥ 1,342	¥ 809

Derivatives and Hedging Activ_5

Derivatives and Hedging Activities (Effect of Derivative Instruments in Consolidated Statements of Income) (Detail) - JPY (¥) ¥ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) recognized in OCI (effective portion)	¥ (4,596)	¥ (1,731)	¥ (2,180)
Accounting Standards Update 2019-04 [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) reclassified from accumulated OCI into income (effective portion)	(3,285)	(3,034)	(661)
Designated as Hedging Instrument | Cash Flow Hedging | Foreign Exchange Contract
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) recognized in OCI (effective portion)	(4,596)	(1,731)	(2,180)
Designated as Hedging Instrument | Cash Flow Hedging | Foreign Exchange Contract | Accounting Standards Update 2019-04 [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) reclassified from accumulated OCI into income (effective portion)	(3,285)	(3,034)	(661)
Other Nonoperating Income Expense | Not Designated as Hedging Instrument | Foreign Exchange Contract
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) recognized in income on derivative	¥ (6,099)	¥ 104	¥ 805

Lessee Accounting (Supplemental

Lessee Accounting (Supplemental Income Statement Information) (Detail) - JPY (¥) ¥ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Lease, Cost [Abstract]
Operating lease cost	¥ 39,699	¥ 40,053
Short-term lease cost	13,961	14,245
Other lease cost	71	120
Total lease cost	¥ 53,731	¥ 54,418

Lessee Accounting (Supplement_2

Lessee Accounting (Supplemental Cash Flow Information) (Details) - JPY (¥) ¥ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Cash paid for amount included in the measurement of lease liabilities
Operating cash flows from operating leases	¥ 39,879	¥ 36,733
Noncash activity – Rights of use assets obtained in exchange for lease liabilities
Operating leases	¥ 21,588	¥ 30,700

Lessee Accounting (Future Minim

Lessee Accounting (Future Minimum Lease Payments) (Detail) ¥ in Millions	Dec. 31, 2021JPY (¥)
Leases [Abstract]
2022	¥ 32,941
2023	22,512
2024	15,226
2025	10,816
2026	7,832
Thereafter	11,192
Total future minimum lease payments	100,519
Less Imputed Interest	(4,189)
Operating leases	¥ 96,330

Lessee Accounting (Remaining Le

Lessee Accounting (Remaining Lease Term And Discount Rate) (Detail)	Dec. 31, 2021	Dec. 31, 2020
Lessee Disclosure [Abstract]
Weighted-average remaining lease term	54 months	56 months
Weighted-average discount rate	2.10%	2.10%

Commitments and Contingent Li_3

Commitments and Contingent Liabilities - Additional Information (Detail) - JPY (¥) ¥ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Commitments and Contingencies Disclosure [Line Items]
Deposits made under lease arrangements included in noncurrent receivables	¥ 10,812	¥ 10,962
Guarantees, maximum amount of undiscounted payments in case of borrower's default	¥ 2,078
Employees with Housing Loan | Minimum
Commitments and Contingencies Disclosure [Line Items]
Guarantee contract period	1 year
Employees with Housing Loan | Maximum
Commitments and Contingencies Disclosure [Line Items]
Guarantee contract period	15 years
Affiliates and other companies with lease obligations and bank loans | Minimum
Commitments and Contingencies Disclosure [Line Items]
Guarantee contract period	1 year
Affiliates and other companies with lease obligations and bank loans | Maximum
Commitments and Contingencies Disclosure [Line Items]
Guarantee contract period	5 years
Purchase of Property, Plant and Equipment
Commitments and Contingencies Disclosure [Line Items]
Commitments outstanding	¥ 76,229
Purchase of Parts and Raw Materials
Commitments and Contingencies Disclosure [Line Items]
Commitments outstanding	¥ 249,909

Commitments and Contingent Li_4

Commitments and Contingent Liabilities (Changes in Accrued Product Warranty Costs) (Detail) - JPY (¥) ¥ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Commitments and Contingencies Disclosure [Abstract]
Balance at beginning of year	¥ 14,300	¥ 15,846
Additions	15,687	11,355
Utilization	(11,928)	(10,657)
Other	(1,110)	(2,244)
Balance at end of year	¥ 16,949	¥ 14,300

Disclosures about the Fair Va_3

Disclosures about the Fair Value of Financial Instruments and Concentrations of Credit Risk (Estimated Fair Values of Canon's Financial Instruments) (Detail) - JPY (¥) ¥ in Millions	Dec. 31, 2021	Dec. 31, 2020
Carrying (Reported) Amount, Fair Value Disclosure
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Long-term debt, including current installments	¥ (177,410)	¥ (346,317)
Estimate of Fair Value, Fair Value Disclosure
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Long-term debt, including current installments	¥ (177,343)	¥ (346,275)

Fair Value Measurements (Assets

Fair Value Measurements (Assets and Liabilities Measured at Fair Value on Recurring Basis) (Detail) - Fair Value, Measurements, Recurring - JPY (¥) ¥ in Millions	Dec. 31, 2021	Dec. 31, 2020
Assets:
Cash and cash equivalents	¥ 500	¥ 500
Prepaid expenses and other current assets:
Derivatives	65	533
Total assets	29,814	20,248
Other current liabilities:
Derivatives	2,119	1,225
Total liabilities	2,119	1,225
Fund Trusts and Others
Investments:
Investments	609	532
Equity Securities
Investments:
Investments	28,640	18,683
Fair Value, Inputs, Level 1
Prepaid expenses and other current assets:
Total assets	28,921	18,967
Fair Value, Inputs, Level 1 | Fund Trusts and Others
Investments:
Investments	281	284
Fair Value, Inputs, Level 1 | Equity Securities
Investments:
Investments	28,640	18,683
Fair Value, Inputs, Level 2
Assets:
Cash and cash equivalents	500	500
Prepaid expenses and other current assets:
Derivatives	65	533
Total assets	893	1,281
Other current liabilities:
Derivatives	2,119	1,225
Total liabilities	2,119	1,225
Fair Value, Inputs, Level 2 | Fund Trusts and Others
Investments:
Investments	¥ 328	¥ 248

Segment Information - Additiona

Segment Information - Additional Information (Detail) ¥ in Millions	12 Months Ended
	Dec. 31, 2021JPY (¥)Segment	Dec. 31, 2020JPY (¥)	Dec. 31, 2019JPY (¥)
Revenue, Major Customer [Line Items]
Operating business segments | Segment	4
Description of geographic concentration risk related to consolidated net sales	Other than in Japan and the United States, Canon does not conduct business in any individual country in which its sales in that country exceed 10% of consolidated net sales
Net sales	¥ 3,513,357	¥ 3,160,243	¥ 3,593,299
UNITED STATES
Revenue, Major Customer [Line Items]
Net sales	¥ 907,909	¥ 801,376	¥ 958,442

Segment Information (Informatio

Segment Information (Information about Operating Results and Assets for Each Segment) (Detail) - JPY (¥) ¥ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Net sales:
Net sales	¥ 3,513,357	¥ 3,160,243	¥ 3,593,299
Operating cost and expenses	3,231,439	3,049,696	3,418,879	[1]
Operating profit	281,918	110,547	174,420
Other income (deductions)	20,788	19,733	21,073
Income before income taxes	302,706	130,280	195,493
Total assets	4,750,888	4,625,614	4,771,918
Depreciation and amortization	221,246	227,825	237,327
Capital expenditures	179,000	161,727	211,228
Printing Business Unit
Net sales:
Net sales	1,934,012	1,800,898	2,089,024
Operating cost and expenses	1,713,154	1,657,319	1,908,436	[1]
Operating profit	225,693	147,108	184,028
Other income (deductions)	7,259	5,076	6,066
Income before income taxes	232,952	152,184	190,094
Total assets	1,009,922	913,931	1,002,778
Depreciation and amortization	69,549	69,725	74,958
Capital expenditures	63,609	56,613	61,789
Imaging Business Unit
Net sales:
Net sales	651,494	539,560	660,105
Operating cost and expenses	574,814	535,584	634,773	[1]
Operating profit	78,718	5,730	26,933
Other income (deductions)	(256)	(778)	905
Income before income taxes	78,462	4,952	27,838
Total assets	236,143	239,605	288,545
Depreciation and amortization	21,840	22,201	24,561
Capital expenditures	12,069	12,540	18,929
Medical Business Unit
Net sales:
Net sales	480,029	435,368	437,456
Operating cost and expenses	450,942	410,830	411,781	[1]
Operating profit	29,420	25,244	26,744
Other income (deductions)	4,876	300	539
Income before income taxes	34,296	25,544	27,283
Total assets	311,247	286,749	273,525
Depreciation and amortization	12,435	11,781	11,760
Capital expenditures	11,888	7,244	7,074
Industrial and Others Business Unit
Net sales:
Net sales	449,915	385,177	405,114
Operating cost and expenses	501,434	441,006	465,197	[1]
Operating profit	44,308	20,516	28,587
Other income (deductions)	342	1,171	0
Income before income taxes	44,650	21,687	28,587
Total assets	345,883	348,614	310,110
Depreciation and amortization	27,677	28,720	29,086
Capital expenditures	25,759	21,276	28,436
Corporate and Eliminations
Net sales:
Net sales	(2,093)	(760)	1,600
Operating cost and expenses	(8,905)	4,957	(1,308)	[1]
Operating profit	(96,221)	(88,051)	(91,872)
Other income (deductions)	8,567	13,964	13,563
Income before income taxes	(87,654)	(74,087)	(78,309)
Total assets	2,847,693	2,836,715	2,896,960
Depreciation and amortization	89,745	95,398	96,962
Capital expenditures	65,675	64,054	95,000
Operating Segments
Net sales:
Net sales	3,513,357	3,160,243	3,593,299
Operating Segments | Printing Business Unit
Net sales:
Net sales	1,938,847	1,804,427	2,092,464
Operating Segments | Imaging Business Unit
Net sales:
Net sales	653,532	541,314	661,706
Operating Segments | Medical Business Unit
Net sales:
Net sales	480,362	436,074	438,525
Operating Segments | Industrial and Others Business Unit
Net sales:
Net sales	545,742	461,522	493,784
Operating Segments | Corporate and Eliminations
Net sales:
Net sales	(105,126)	(83,094)	(93,180)
Intersegment Eliminations | Printing Business Unit
Net sales:
Net sales	4,835	3,529	3,440
Intersegment Eliminations | Imaging Business Unit
Net sales:
Net sales	2,038	1,754	1,601
Intersegment Eliminations | Medical Business Unit
Net sales:
Net sales	333	706	1,069
Intersegment Eliminations | Industrial and Others Business Unit
Net sales:
Net sales	95,827	76,345	88,670
Intersegment Eliminations | Corporate and Eliminations
Net sales:
Net sales	¥ (103,033)	¥ (82,334)	¥ (94,780)
[1]	During 2019, the Company implemented a restructuring plan centered in Europe with the goal of reorganizing sales structure and improving profitability mainly in the Printing Business Unit. The employee severance charges in the Printing Business Unit under the plan for the year ended December 31, 2019 were ¥15,656 million and most of the charges are included in selling, general and administrative expenses in the consolidated statements of income. The restructuring charges for the years ended December 31, 2021 and 2020 were not significant.

Segment Information (Informat_2

Segment Information (Information about Operating Results and Assets for Each Segment) (Parenthetical) (Detail) ¥ in Millions	12 Months Ended
	Dec. 31, 2019JPY (¥)
Selling, General and Administrative Expenses
Segment reporting information [Line Items]
Restructuring costs	¥ 15,656

Segment Information (Product Sa

Segment Information (Product Sales to External Customers for Each Segment) (Detail) - JPY (¥) ¥ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Revenue, Major Customer [Line Items]
Net sales	¥ 3,513,357	¥ 3,160,243	¥ 3,593,299
Printing Business Unit
Revenue, Major Customer [Line Items]
Net sales	1,934,012	1,800,898	2,089,024
Printing Business Unit | Office Multifunction Devices
Revenue, Major Customer [Line Items]
Net sales	477,000	455,357	573,297
Printing Business Unit | Office Others
Revenue, Major Customer [Line Items]
Net sales	279,366	267,123	292,378
Printing Business Unit | Office
Revenue, Major Customer [Line Items]
Net sales	756,366	722,480	865,675
Printing Business Unit | Laser Printers
Revenue, Major Customer [Line Items]
Net sales	560,159	502,157	624,597
Printing Business Unit | Inkjet Printers and Others
Revenue, Major Customer [Line Items]
Net sales	328,932	326,041	296,622
Printing Business Unit | Prosumer
Revenue, Major Customer [Line Items]
Net sales	889,091	828,198	921,219
Printing Business Unit | Production [Member]
Revenue, Major Customer [Line Items]
Net sales	288,555	250,220	302,130
Imaging Business Unit
Revenue, Major Customer [Line Items]
Net sales	651,494	539,560	660,105
Imaging Business Unit | Cameras
Revenue, Major Customer [Line Items]
Net sales	432,885	347,240	466,306
Imaging Business Unit | Network Cameras and Others
Revenue, Major Customer [Line Items]
Net sales	218,609	192,320	193,799
Medical Business Unit
Revenue, Major Customer [Line Items]
Net sales	480,029	435,368	437,456
Industrial and Others Business Unit
Revenue, Major Customer [Line Items]
Net sales	449,915	385,177	405,114
Industrial and Others Business Unit | Others
Revenue, Major Customer [Line Items]
Net sales	123,942	115,899	140,673
Industrial and Others Business Unit | Lithography Equipment
Revenue, Major Customer [Line Items]
Net sales	213,699	142,516	157,160
Industrial and Others Business Unit | Industrial Equipment
Revenue, Major Customer [Line Items]
Net sales	112,274	126,762	107,281
Corporate and Eliminations
Revenue, Major Customer [Line Items]
Net sales	¥ (2,093)	¥ (760)	¥ 1,600

Segment Information (Informat_3

Segment Information (Information by Major Geographic Area) (Detail) - JPY (¥) ¥ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Net sales:
Net sales	¥ 3,513,357	¥ 3,160,243	¥ 3,593,299
Long-lived assets:
Long-lived assets	1,438,987	1,463,538	1,552,010
Japan
Long-lived assets:
Long-lived assets	986,638	1,011,109	1,053,074
Americas
Long-lived assets:
Long-lived assets	152,137	133,648	148,669
Europe
Long-lived assets:
Long-lived assets	158,297	175,516	191,050
Asia and Oceania
Long-lived assets:
Long-lived assets	141,915	143,265	159,217
Japan
Net sales:
Net sales	830,378	806,305	872,534
America
Net sales:
Net sales	968,839	852,451	1,029,078
Europe
Net sales:
Net sales	894,898	795,616	882,480
Asia and Oceania
Net sales:
Net sales	¥ 819,242	¥ 705,871	¥ 809,207

Subsequent Event - Additional I

Subsequent Event - Additional Information (Detail) - Revolving Credit Facility - JPY (¥) ¥ in Millions	Mar. 16, 2022	Jan. 05, 2022
Subsequent Event [Line Items]
Proceeds from debt		¥ 70,000
Subsequent Event
Subsequent Event [Line Items]
Proceeds from debt	¥ 30,000

Schedule II Valuation and Qua_2

Schedule II Valuation and Qualifying Accounts (Detail) - JPY (¥) ¥ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Trade Receivables
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at beginning of period	¥ 11,645	¥ 10,359	¥ 11,477
Addition- charged to income	1,857	3,419	1,840
Deduction bad debts written off	(1,540)	(1,983)	(2,189)
Translation adjustments and other	532	(150)	(769)
Balance at end of period	12,494	11,645	10,359
Finance Receivables
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at beginning of period	3,068	2,627	2,675
Addition- charged to income	2,331	2,351	1,495
Deduction bad debts written off	(2,157)	(2,199)	(1,653)
Translation adjustments and other	549	289	110
Balance at end of period	¥ 3,791	¥ 3,068	¥ 2,627