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Financial Risk Management - Schedule of Capital Objectives-Related Information (Detail) - SEK (kr) kr in Billions | 12 Months Ended
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Dec. 31, 2021 | Dec. 31, 2020
Disclosure Of Capital Objectives Related Information [Line Items] |  |
Free cash ﬂow before M&A | kr 32.1 | kr 22.3
Positive net cash | kr 65.8 | kr 41.9
Moody's [member] |  |
Disclosure Of Capital Objectives Related Information [Line Items] |  |
Credit rating | Ba1, stable | Ba1, stable
Standard and Poor's [member] |  |
Disclosure Of Capital Objectives Related Information [Line Items] |  |
Credit rating | BBB-, stable | BBB-, stable
Fitch [member] |  |
Disclosure Of Capital Objectives Related Information [Line Items] |  |
Credit rating | BBB-, stable | BBB-, stable

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- Definition Description of credit ratings. + References No definition available. + Details
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- Definition Disclosure Of Capital Objectives Related Information [line items]. + References No definition available. + Details
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- Definition Free cash flow before merger and acquisition. + References No definition available. + Details
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- Definition Net cash. + References No definition available. + Details
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- Details
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