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Financial Risk Management - Disclosure of Outstanding Derivatives (Parenthetical) (Detail) - SEK (kr) kr in Millions | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
--- | --- | --- | ---
Outstanding Derivatives [Line Items] |  |  |
Other current liabilities | kr 38,174 | kr 37,405 | kr 38,891
Currency Derivatives [member] | Cash flow hedges [member] |  |  |
Outstanding Derivatives [Line Items] |  |  |
Other current liabilities | 290 |  |
Other current assets | kr 127 |  |

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- Definition The amount of current assets that the entity does not separately disclose in the same statement or note. [Refer: Current assets] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2020-01-01 -Paragraph 55 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2020-en-r&anchor=para_55&doctype=Standard -URIDate 2020-01-01 + Details
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- Definition The amount of current liabilities that the entity does not separately disclose in the same statement or note. [Refer: Current liabilities] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2020-01-01 -Paragraph 55 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2020-en-r&anchor=para_55&doctype=Standard -URIDate 2020-01-01 + Details
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- Details
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- Details
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