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v3.21.1

Critical Accounting Estimates and Judgments - Additional Information (Detail) - SEK (kr) kr in Millions | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Disclosure of accounting judgements and estimates [line items] |  |  |  |
Allowances for estimated losses on trade and customer receivables | kr 2,500 | kr 3,000 |  |
Percentage of allowances for estimated losses on gross trade and customer finance receivables | 5.00% | 5.00% |  |
Allowances for estimated losses on inventory valuation | kr 3,627 | kr 3,386 | kr 2,611 | kr 2,425
Allowances for estimated losses on inventory valuation, percentage | 11.00% | 10.00% |  |
Write-downs for intangible assets and goodwill | kr (100) | kr 0 |  |
Goodwill | 34,945 | 31,200 | 30,035 |
Provisions current | 10,466 | 10,923 | 16,008 |
Defined benefit obligation (DBO) | 108,188 | 102,434 |  |
Fair value of plan assets | 73,611 | 69,659 |  |
Deferred tax assets | 26,296 | 31,174 | kr 23,152 |
Intellectual property rights brands and other intangible assets [member] |  |  |  |
Disclosure of accounting judgements and estimates [line items] |  |  |  |
Intangible assets and goodwill | kr 39,800 | kr 33,700 |  |
Top of range [member] |  |  |  |
Disclosure of accounting judgements and estimates [line items] |  |  |  |
Percentage of ownership | 100.00% |  |  |

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