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Critical Accounting Estimates and Judgments - Additional Information (Detail) - SEK (kr) kr in Millions | 12 Months Ended
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Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Disclosure of accounting judgements and estimates [line items] |  |  |
Allowances for estimated losses on trade and customer receivables | kr 2,400 | kr 2,500 |
Percentage of allowances for estimated losses on gross trade and customer finance receivables | 4.00% | 5.00% |
Allowances for estimated losses on inventory valuation | kr 3,600 | kr 3,600 |
Allowances for estimated losses on inventory valuation, percentage | 9.00% | 11.00% |
Percentage of ownership | 49.07% |  |
Write-downs for intangible assets and goodwill | kr (313) | kr (137) | kr (55)
Goodwill | 38,204 | 34,945 |
Provisions | 9,504 | 10,466 | kr 10,923
Defined benefit obligation (DBO) | 113,543 | 108,188 |
Fair value of plan assets | 81,355 | 73,611 |
Deferred tax assets | 23,109 | 26,296 |
Intellectual property rights brands and other intangible assets [member] |  |  |
Disclosure of accounting judgements and estimates [line items] |  |  |
Intangible assets and goodwill | kr 42,000 | kr 39,800 |
Top of range [Member] |  |  |
Disclosure of accounting judgements and estimates [line items] |  |  |
Percentage of ownership | 100.00% |  |

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- Definition The amounts of income taxes recoverable in future periods in respect of: (a) deductible temporary differences; (b) the carryforward of unused tax losses; and (c) the carryforward of unused tax credits. [Refer: Temporary differences [member]; Unused tax credits [member]; Unused tax losses [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 12 -IssueDate 2021-01-01 -Paragraph 81 -Subparagraph g -Clause i -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=12&code=ifrs-tx-2021-en-r&anchor=para_81_g_i&doctype=Standard -URIDate 2021-03-24 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2021-01-01 -Paragraph 54 -Subparagraph o -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2021-en-r&anchor=para_54_o&doctype=Standard -URIDate 2021-03-24 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2021-01-01 -Paragraph 56 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2021-en-r&anchor=para_56&doctype=Standard -URIDate 2021-03-24 + Details
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