XML 240 R136.htm IDEA: XBRL DOCUMENT
v3.21.1

Financial Risk Management - Summary of Aging Analysis of Gross Values of Trade Receivables and Contracts Assets by Risk Category (Detail) kr in Millions | Dec. 31, 2020 SEK (kr)
--- | ---
Disclosure Of Credit Risk Exposure [Line Items] |
Aging analysis by risk category | kr 55,854
Not due [member] |
Disclosure Of Credit Risk Exposure [Line Items] |
Aging analysis by risk category | 50,130
Maturity within 3 months [member] |
Disclosure Of Credit Risk Exposure [Line Items] |
Aging analysis by risk category | 2,154
Later than 3 months and not later than 6 months [member] |
Disclosure Of Credit Risk Exposure [Line Items] |
Aging analysis by risk category | 624
2021 [member] |
Disclosure Of Credit Risk Exposure [Line Items] |
Aging analysis by risk category | 726
Longer than 1 year [member] |
Disclosure Of Credit Risk Exposure [Line Items] |
Aging analysis by risk category | 2,220
Country risk Low [member] |
Disclosure Of Credit Risk Exposure [Line Items] |
Aging analysis by risk category | 34,613
Country risk Low [member] | Not due [member] |
Disclosure Of Credit Risk Exposure [Line Items] |
Aging analysis by risk category | 33,620
Country risk Low [member] | Maturity within 3 months [member] |
Disclosure Of Credit Risk Exposure [Line Items] |
Aging analysis by risk category | 517
Country risk Low [member] | Later than 3 months and not later than 6 months [member] |
Disclosure Of Credit Risk Exposure [Line Items] |
Aging analysis by risk category | 63
Country risk Low [member] | 2021 [member] |
Disclosure Of Credit Risk Exposure [Line Items] |
Aging analysis by risk category | 105
Country risk Low [member] | Longer than 1 year [member] |
Disclosure Of Credit Risk Exposure [Line Items] |
Aging analysis by risk category | 308
Country risk medium [member] |
Disclosure Of Credit Risk Exposure [Line Items] |
Aging analysis by risk category | 16,167
Country risk medium [member] | Not due [member] |
Disclosure Of Credit Risk Exposure [Line Items] |
Aging analysis by risk category | 13,487
Country risk medium [member] | Maturity within 3 months [member] |
Disclosure Of Credit Risk Exposure [Line Items] |
Aging analysis by risk category | 1,243
Country risk medium [member] | Later than 3 months and not later than 6 months [member] |
Disclosure Of Credit Risk Exposure [Line Items] |
Aging analysis by risk category | 338
Country risk medium [member] | 2021 [member] |
Disclosure Of Credit Risk Exposure [Line Items] |
Aging analysis by risk category | 346
Country risk medium [member] | Longer than 1 year [member] |
Disclosure Of Credit Risk Exposure [Line Items] |
Aging analysis by risk category | 753
Country risk high [member] |
Disclosure Of Credit Risk Exposure [Line Items] |
Aging analysis by risk category | 5,074
Country risk high [member] | Not due [member] |
Disclosure Of Credit Risk Exposure [Line Items] |
Aging analysis by risk category | 3,023
Country risk high [member] | Maturity within 3 months [member] |
Disclosure Of Credit Risk Exposure [Line Items] |
Aging analysis by risk category | 394
Country risk high [member] | Later than 3 months and not later than 6 months [member] |
Disclosure Of Credit Risk Exposure [Line Items] |
Aging analysis by risk category | 223
Country risk high [member] | 2021 [member] |
Disclosure Of Credit Risk Exposure [Line Items] |
Aging analysis by risk category | 275
Country risk high [member] | Longer than 1 year [member] |
Disclosure Of Credit Risk Exposure [Line Items] |
Aging analysis by risk category | kr 1,159

X
- Definition Change in exposure to credit risk. + References No definition available. + Details
Name: | eric_ChangeInExposureToCreditRisk
Namespace Prefix: | eric_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | instant

X
- Definition Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes of the table. + References No definition available. + Details
Name: | ifrs-full_DisclosureOfCreditRiskExposureLineItems
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | ifrs-full_MaturityAxis=eric_NotDueMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_MaturityAxis=ifrs-full_NotLaterThanThreeMonthsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_MaturityAxis=ifrs-full_LaterThanThreeMonthsAndNotLaterThanSixMonthsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_MaturityAxis=ifrs-full_LaterThanSixMonthsAndNotLaterThanOneYearMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_MaturityAxis=ifrs-full_LaterThanOneYearMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_TypesOfRisksAxis=eric_CountryRiskLowMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_TypesOfRisksAxis=eric_CountryRiskMediumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | ifrs-full_TypesOfRisksAxis=eric_CountryRiskHighMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |