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Provisions - Additional Information (Detail) - SEK (kr) kr in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Disclosure of Provisions [line items] |  |  |
Additional provisions | kr 5,247 | kr 7,172 |
Reversal of excess amounts | 1,161 | 1,183 |
Actual cash outlays | 3,975 | 7,576 |
Estimated cash outlays | 9,300 |  |
Non-current provisions | 2,886 | 2,679 | kr 5,471
Restructuring [member] |  |  |
Disclosure of Provisions [line items] |  |  |
Additional provisions | 1,144 | 436 |
Reversal of excess amounts | 149 | 290 |
Actual cash outlays | 815 | 1,788 |
Estimated cash outlays | 1,100 |  |
Customer Related Provision [member] |  |  |
Disclosure of Provisions [line items] |  |  |
Additional provisions | 1,108 | 1,323 |
Reversal of excess amounts | 83 | 86 |
Actual cash outlays | 766 | 3,247 |
Estimated cash outlays | 3,700 |  |
Suppliers Related Provision [member] |  |  |
Disclosure of Provisions [line items] |  |  |
Additional provisions | 535 | 1,641 |
Reversal of excess amounts | 438 | 739 |
Actual cash outlays | 595 | 1,052 |
Estimated cash outlays | 1,300 |  |
Warranty [member] |  |  |
Disclosure of Provisions [line items] |  |  |
Additional provisions | 248 | 906 |
Reversal of excess amounts | 99 | 43 |
Actual cash outlays | 105 | 288 |
Estimated cash outlays | 800 |  |
Other [member] |  |  |
Disclosure of Provisions [line items] |  |  |
Additional provisions | 2,212 | 2,866 |
Reversal of excess amounts | 392 | 25 |
Actual cash outlays | 1,694 | 1,201 |
Estimated cash outlays | 2,400 |  |
Provisions for share based payments | 2,100 | kr 1,900 |
2021 [member] |  |  |
Disclosure of Provisions [line items] |  |  |
Estimated cash outlays | 6,300 |  |
2021 [member] | Restructuring [member] |  |  |
Disclosure of Provisions [line items] |  |  |
Estimated cash outlays | 1,200 |  |
2021 [member] | Customer Related Provision [member] |  |  |
Disclosure of Provisions [line items] |  |  |
Estimated cash outlays | 1,100 |  |
2021 [member] | Suppliers Related Provision [member] |  |  |
Disclosure of Provisions [line items] |  |  |
Estimated cash outlays | 700 |  |
2021 [member] | Warranty [member] |  |  |
Disclosure of Provisions [line items] |  |  |
Estimated cash outlays | 800 |  |
2021 [member] | Other [member] |  |  |
Disclosure of Provisions [line items] |  |  |
Estimated cash outlays | kr 2,500 |  |

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- Definition Estimated provisions used/cash out during period. + References No definition available. + Details
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- Definition Provisions for share based payments. + References No definition available. + Details
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- Definition The amount recognised for new other provisions. [Refer: Other provisions] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 37 -IssueDate 2020-01-01 -Paragraph 84 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=37&code=ifrs-tx-2020-en-r&anchor=para_84_b&doctype=Standard -URIDate 2020-01-01 + Details
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- Definition The amount of non-current provisions. [Refer: Provisions] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2020-01-01 -Paragraph 54 -Subparagraph l -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2020-en-r&anchor=para_54_l&doctype=Standard -URIDate 2020-01-01 + Details
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- Definition The amount used (ie incurred and charged against the provision) for other provisions. [Refer: Other provisions] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 37 -IssueDate 2020-01-01 -Paragraph 84 -Subparagraph c -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=37&code=ifrs-tx-2020-en-r&anchor=para_84_c&doctype=Standard -URIDate 2020-01-01 + Details
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- Definition The amount reversed for unused other provisions. [Refer: Other provisions] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 37 -IssueDate 2020-01-01 -Paragraph 84 -Subparagraph d -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=37&code=ifrs-tx-2020-en-r&anchor=para_84_d&doctype=Standard -URIDate 2020-01-01 + Details
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