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Post-Employment Benefits - Summary of Present Value of the Defined Benefit Obligation (Detail) - SEK (kr) kr in Millions | Dec. 31, 2023 | Dec. 31, 2022
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Present Value Of Defined Benefit Obligation [Line Items] |  |
Defined benefit obligation (DBO) | kr 85,535 | kr 83,691
Of which partially or fully funded [member] |  |
Present Value Of Defined Benefit Obligation [Line Items] |  |
Defined benefit obligation (DBO) | 81,900 | 79,536
Of which unfunded [member] |  |
Present Value Of Defined Benefit Obligation [Line Items] |  |
Defined benefit obligation (DBO) | 3,635 | 4,155
Sweden [member] |  |
Present Value Of Defined Benefit Obligation [Line Items] |  |
Defined benefit obligation (DBO) | 50,043 | 50,441
Sweden [member] | Of which partially or fully funded [member] |  |
Present Value Of Defined Benefit Obligation [Line Items] |  |
Defined benefit obligation (DBO) | 50,043 | 50,441
Sweden [member] | Of which unfunded [member] |  |
Present Value Of Defined Benefit Obligation [Line Items] |  |
Defined benefit obligation (DBO) | 0 | 0
US [member] |  |
Present Value Of Defined Benefit Obligation [Line Items] |  |
Defined benefit obligation (DBO) | 5,073 | 5,365
US [member] | Of which partially or fully funded [member] |  |
Present Value Of Defined Benefit Obligation [Line Items] |  |
Defined benefit obligation (DBO) | 4,560 | 4,812
US [member] | Of which unfunded [member] |  |
Present Value Of Defined Benefit Obligation [Line Items] |  |
Defined benefit obligation (DBO) | 513 | 553
United Kingdom [member] |  |
Present Value Of Defined Benefit Obligation [Line Items] |  |
Defined benefit obligation (DBO) | 10,595 | 9,866
United Kingdom [member] | Of which partially or fully funded [member] |  |
Present Value Of Defined Benefit Obligation [Line Items] |  |
Defined benefit obligation (DBO) | 10,595 | 9,866
United Kingdom [member] | Of which unfunded [member] |  |
Present Value Of Defined Benefit Obligation [Line Items] |  |
Defined benefit obligation (DBO) | 0 | 0
Other Countries [member] |  |
Present Value Of Defined Benefit Obligation [Line Items] |  |
Defined benefit obligation (DBO) | 19,824 | 18,019
Other Countries [member] | Of which partially or fully funded [member] |  |
Present Value Of Defined Benefit Obligation [Line Items] |  |
Defined benefit obligation (DBO) | 16,702 | 14,417
Other Countries [member] | Of which unfunded [member] |  |
Present Value Of Defined Benefit Obligation [Line Items] |  |
Defined benefit obligation (DBO) | kr 3,122 | kr 3,602

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- Definition Present value of defined benefit obligation. + References No definition available. + Details
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- Definition The present value, without deducting any plan assets, of expected future payments required to settle the obligation resulting from employee service in the current and prior periods. [Refer: Plan assets, at fair value] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 19 -IssueDate 2023-01-01 -Paragraph 57 -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=19&code=ifrs-tx-2023-en-r&anchor=para_57_a&doctype=Standard -URIDate 2023-03-23 + Details
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