XML 195 R91.htm IDEA: XBRL DOCUMENT
v3.21.1

Customer Contract Related Balances - Additional Information (Detail) - SEK (kr) kr in Millions | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Disclosure Of Receivables Customer Finance Contract Assets And Contract Liabilities [Line Items] |  |  |
Trade receivables related to associated companies and joint ventures | kr 0 | kr 127 |
Customer finance credits current | kr 1,916 | kr 1,494 | kr 1,704
2021 [member] |  |  |
Disclosure Of Receivables Customer Finance Contract Assets And Contract Liabilities [Line Items] |  |  |
Percentage of expected transaction price allocated to remaining performance obligation will converted to revenue | 80.00% |  |
2022 [member] |  |  |
Disclosure Of Receivables Customer Finance Contract Assets And Contract Liabilities [Line Items] |  |  |
Percentage of expected transaction price allocated to remaining performance obligation will converted to revenue | 15.00% |  |
2023 and beyond [member] |  |  |
Disclosure Of Receivables Customer Finance Contract Assets And Contract Liabilities [Line Items] |  |  |
Percentage of expected transaction price allocated to remaining performance obligation will converted to revenue | 5.00% |  |

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- Definition Customer finance current. + References No definition available. + Details
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Namespace Prefix: | eric_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition Disclosure of receivables customer finance contract assets and contract liabilities + References No definition available. + Details
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Balance Type: | na
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- Definition Percentage of entity which expects transaction price allocated to remaining performance obligation will converted to revenue. + References No definition available. + Details
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Namespace Prefix: | eric_
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Period Type: | duration

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- Definition The amount of receivables due from associates. [Refer: Associates [member]] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2020-01-01 -Paragraph 78 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2020-en-r&anchor=para_78_b&doctype=Standard -URIDate 2020-01-01 + Details
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Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |