XML 281 R145.htm IDEA: XBRL DOCUMENT
v3.22.1

Financial Income and Expenses - Summary of Financial Income and Expenses (Parenthetical) (Detail) - SEK (kr) kr in Millions | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Disclosure Of Detailed Information About Finance Income Expense [Abstract] |  |  |
Net loss from revaluation of customer finance receivables |  | kr 262 | kr 650
Net gain on revaluation of investments in shares and participations | kr 784 | kr 12 | kr 149
Net gain from revaluation of customer finance receivables | kr 350 |  |

X
- Definition Disclosure of detailed information about finance income (expense). + References No definition available. + Details
Name: | eric_DisclosureOfDetailedInformationAboutFinanceIncomeExpenseAbstract
Namespace Prefix: | eric_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Net gain from revaluation of customer finance receivables. + References No definition available. + Details
Name: | eric_NetGainFromRevaluationOfCustomerFinanceReceivables
Namespace Prefix: | eric_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Net Gain On Revaluation Of Investments In Shares And Participations. + References No definition available. + Details
Name: | eric_NetGainOnRevaluationOfInvestmentsInSharesAndParticipations
Namespace Prefix: | eric_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Net loss from revaluation of customer finance receivables. + References No definition available. + Details
Name: | eric_NetLossFromRevaluationOfCustomerFinanceReceivables
Namespace Prefix: | eric_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration