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Statement of Cash Flows - Summary of Adjustments to Reconcile Net Income to Cash (Detail) - SEK (kr) kr in Millions | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Disclosure Of Adjustments To Reconcile Net Income To Cash [Line Items] |  |  |
Depreciations | kr 4,272 | kr 4,114 | kr 3,674
Impairment losses | 662 | 274 | 198
Adjustments to reconcile net income to cash | 51,710 | 17,638 | 17,143
Depreciations | 2,427 | 2,451 | 2,277
Impairment losses | 154 | 66 | 0
Amortizations | 4,458 | 3,577 | 2,507
Goodwill | 31,897 | 0 | 112
Total impairments | 31,916 | 61 | 313
Total depreciation, amortization and impairment losses on property, plant and equipment and intangible assets | 43,889 | 10,543 | 8,969
Taxes | 3,189 | 5,383 | 6,576
Dividends from joint ventures/associated companies | 46 | 58 | 90
Undistributed earnings in joint ventures/ associated companies | (104) | (3) | 270
Gains/losses on investments and sale of operations, intangible assets and PP&E, net | 268 | (287) | (971)
Other non-cash items | 4,422 | 1,944 | 2,209
Right-of-use assets [member] |  |  |
Disclosure Of Adjustments To Reconcile Net Income To Cash [Line Items] |  |  |
Adjustments to reconcile net income to cash | 2,581 | 2,517 | 2,277
Intangible asset and goodwill [member] |  |  |
Disclosure Of Adjustments To Reconcile Net Income To Cash [Line Items] |  |  |
Adjustments to reconcile net income to cash | 36,374 | 3,638 | 2,820
Property, plant and equipments [member] |  |  |
Disclosure Of Adjustments To Reconcile Net Income To Cash [Line Items] |  |  |
Adjustments to reconcile net income to cash | 4,934 | 4,388 | 3,872
Capitalized development expenditure [member] |  |  |
Disclosure Of Adjustments To Reconcile Net Income To Cash [Line Items] |  |  |
Amortizations | 1,137 | 1,586 | 1,343
Customer relationships, IPRs and other intangible assets [member] |  |  |
Disclosure Of Adjustments To Reconcile Net Income To Cash [Line Items] |  |  |
Amortizations | 3,321 | 1,991 | 1,164
Impairments | kr 19 | kr 61 | kr 201

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