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Property, Plant and Equipment - Summary of Property, Plant and Equipment (Detail) - SEK (kr) kr in Millions | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019
Disclosure of detailed information about property, plant and equipment [line items] |  |
Property, plant and equipment, opening balance | kr 13,850 | kr 12,849
Impairment losses | (500) | (400)
Property, plant and equipment, closing balance | 13,383 | 13,850
Real estate [member] |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
Property, plant and equipment, opening balance | 2,715 |
Property, plant and equipment, closing balance | 2,823 | 2,715
Machinery and other technical assets [member] |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
Property, plant and equipment, opening balance | 626 |
Property, plant and equipment, closing balance | 562 | 626
Other equipment tools and installations [member] |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
Property, plant and equipment, opening balance | 9,494 |
Property, plant and equipment, closing balance | 9,003 | 9,494
Construction in progress and advance payments [member] |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
Property, plant and equipment, opening balance | 1,015 |
Property, plant and equipment, closing balance | 995 | 1,015
Cost [member] |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
Property, plant and equipment, opening balance | 45,072 | 43,556
Additions | 4,493 | 5,118
Balances regarding acquired/divested business | 55 | (284)
Sales/disposals | (3,749) | (4,369)
Translation differences | (2,453) | 1,051
Property, plant and equipment, closing balance | 43,418 | 45,072
Cost [member] | Real estate [member] |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
Property, plant and equipment, opening balance | 6,755 | 6,844
Additions | 78 | 81
Balances regarding acquired/divested business | 2 | (167)
Sales/disposals | (567) | (568)
Reclassiﬁcations | 720 | 369
Translation differences | (485) | 196
Property, plant and equipment, closing balance | 6,503 | 6,755
Cost [member] | Machinery and other technical assets [member] |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
Property, plant and equipment, opening balance | 3,512 | 3,372
Additions | 163 | 272
Balances regarding acquired/divested business | 4 | 173
Sales/disposals | (475) | (346)
Reclassiﬁcations | 92 | (24)
Translation differences | (266) | 65
Property, plant and equipment, closing balance | 3,030 | 3,512
Cost [member] | Other equipment tools and installations [member] |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
Property, plant and equipment, opening balance | 33,790 | 32,469
Additions | 2,184 | 2,650
Balances regarding acquired/divested business | 59 | (317)
Sales/disposals | (2,534) | (2,941)
Reclassiﬁcations | 1,009 | 1,178
Translation differences | (1,618) | 751
Property, plant and equipment, closing balance | 32,890 | 33,790
Cost [member] | Construction in progress and advance payments [member] |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
Property, plant and equipment, opening balance | 1,015 | 871
Additions | 2,068 | 2,115
Balances regarding acquired/divested business | (10) | 27
Sales/disposals | (173) | (514)
Reclassiﬁcations | (1,821) | (1,523)
Translation differences | (84) | 39
Property, plant and equipment, closing balance | 995 | 1,015
Accumulated depreciation and amortization [member] |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
Property, plant and equipment, opening balance | (29,879) | (29,420)
Depreciations | (3,602) | (3,587)
Balances regarding acquired/divested business | 1 | 464
Sales/disposals | 3,172 | 3,394
Translation differences | 1,647 | (730)
Property, plant and equipment, closing balance | (28,661) | (29,879)
Accumulated depreciation and amortization [member] | Real estate [member] |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
Property, plant and equipment, opening balance | (3,745) | (3,703)
Depreciations | (425) | (406)
Balances regarding acquired/divested business |  | 97
Sales/disposals | 537 | 379
Reclassiﬁcations | 1 |
Translation differences | 227 | (112)
Property, plant and equipment, closing balance | (3,405) | (3,745)
Accumulated depreciation and amortization [member] | Machinery and other technical assets [member] |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
Property, plant and equipment, opening balance | (2,843) | (2,948)
Depreciations | (241) | (203)
Balances regarding acquired/divested business |  | 12
Sales/disposals | 470 | 323
Reclassiﬁcations | 11 | 34
Translation differences | 210 | (61)
Property, plant and equipment, closing balance | (2,393) | (2,843)
Accumulated depreciation and amortization [member] | Other equipment tools and installations [member] |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
Property, plant and equipment, opening balance | (23,291) | (22,769)
Depreciations | (2,936) | (2,978)
Balances regarding acquired/divested business | 1 | 355
Sales/disposals | 2,165 | 2,692
Reclassiﬁcations | (12) | (34)
Translation differences | 1,210 | (557)
Property, plant and equipment, closing balance | (22,863) | (23,291)
Accumulated impairment losses [member] |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
Property, plant and equipment, opening balance | (1,343) | (1,287)
Balances regarding acquired/divested business |  | 2
Impairment losses | (512) | (360)
Sales/disposals | 387 | 345
Translation differences | 94 | (43)
Property, plant and equipment, closing balance | (1,374) | (1,343)
Accumulated impairment losses [member] | Real estate [member] |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
Property, plant and equipment, opening balance | (295) | (292)
Balances regarding acquired/divested business |  | 1
Impairment losses | (11) | (56)
Sales/disposals | 9 | 61
Translation differences | 22 | (9)
Property, plant and equipment, closing balance | (275) | (295)
Accumulated impairment losses [member] | Machinery and other technical assets [member] |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
Property, plant and equipment, opening balance | (43) | (66)
Impairment losses | (65) | 6
Sales/disposals | 28 | 19
Translation differences | 5 | (2)
Property, plant and equipment, closing balance | (75) | (43)
Accumulated impairment losses [member] | Other equipment tools and installations [member] |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
Property, plant and equipment, opening balance | (1,005) | (929)
Balances regarding acquired/divested business |  | 1
Impairment losses | (434) | (280)
Sales/disposals | 348 | 235
Translation differences | 67 | (32)
Property, plant and equipment, closing balance | (1,024) | (1,005)
Accumulated impairment losses [member] | Construction in progress and advance payments [member] |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |
Impairment losses | (2) | (30)
Sales/disposals | kr 2 | kr 30

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- Definition The amount of additions to property, plant and equipment other than those acquired through business combinations. [Refer: Business combinations [member]; Property, plant and equipment] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 16 -IssueDate 2020-01-01 -Paragraph 73 -Subparagraph e -Clause i -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=16&code=ifrs-tx-2020-en-r&anchor=para_73_e_i&doctype=Standard -URIDate 2020-01-01 + Details
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- Definition The increase (decrease) in property, plant and equipment. [Refer: Property, plant and equipment] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 16 -IssueDate 2020-01-01 -Paragraph 73 -Subparagraph e -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=16&code=ifrs-tx-2020-en-r&anchor=para_73_e&doctype=Standard -URIDate 2020-01-01 + Details
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- Definition The amount of depreciation of property, plant and equipment. [Refer: Depreciation and amortisation expense; Property, plant and equipment] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 16 -IssueDate 2020-01-01 -Paragraph 73 -Subparagraph e -Clause vii -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=16&code=ifrs-tx-2020-en-r&anchor=para_73_e_vii&doctype=Standard -URIDate 2020-01-01 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 16 -IssueDate 2020-01-01 -Paragraph 75 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=16&code=ifrs-tx-2020-en-r&anchor=para_75_a&doctype=Standard -URIDate 2020-01-01 + Details
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- 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
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- Definition The decrease in property, plant and equipment resulting from disposals. [Refer: Property, plant and equipment] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 16 -IssueDate 2020-01-01 -Paragraph 73 -Subparagraph e -Clause ii -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=16&code=ifrs-tx-2020-en-r&anchor=para_73_e_ii&doctype=Standard -URIDate 2020-01-01 + Details
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- Definition The amount of impairment loss recognised in profit or loss for property, plant and equipment. [Refer: Impairment loss recognised in profit or loss; Property, plant and equipment] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 16 -IssueDate 2020-01-01 -Paragraph 73 -Subparagraph e -Clause v -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=16&code=ifrs-tx-2020-en-r&anchor=para_73_e_v&doctype=Standard -URIDate 2020-01-01 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2020-01-01 -Paragraph 98 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2020-en-r&anchor=para_98_a&doctype=Standard -URIDate 2020-01-01 + Details
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- Definition The increase (decrease) in property, plant and equipment resulting from net exchange differences arising on the translation of the financial statements from the functional currency into a different presentation currency, including the translation of a foreign operation into the presentation currency of the reporting entity. [Refer: Property, plant and equipment] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 16 -IssueDate 2020-01-01 -Paragraph 73 -Subparagraph e -Clause viii -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=16&code=ifrs-tx-2020-en-r&anchor=para_73_e_viii&doctype=Standard -URIDate 2020-01-01 + Details
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- Definition The increase (decrease) in property, plant and equipment resulting from transfers from construction in progress. [Refer: Property, plant and equipment; Construction in progress] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 16 -IssueDate 2020-01-01 -Paragraph 73 -Subparagraph e -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=16&code=ifrs-tx-2020-en-r&anchor=para_73_e&doctype=Standard -URIDate 2020-01-01 + Details
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- Definition The amount of tangible assets that: (a) are held for use in the production or supply of goods or services, for rental to others, or for administrative purposes; and (b) are expected to be used during more than one period. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 16 -IssueDate 2020-01-01 -Paragraph 73 -Subparagraph e -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=16&code=ifrs-tx-2020-en-r&anchor=para_73_e&doctype=Standard -URIDate 2020-01-01 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2020-01-01 -Paragraph 54 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2020-en-r&anchor=para_54_a&doctype=Standard -URIDate 2020-01-01 + Details
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