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Interest-Bearing Liabilities - Reconciliation of Liabilities Arising from Financing Activities (Detail) - SEK (kr) kr in Millions | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Disclosure Of Detailed Information About Borrowings [Line Items] |  |  |
Opening balance | kr 37,696 |  |
Cash ﬂows |  |  |
Proceeds from issuance of borrowings | 4,400 | kr 4,851 | kr 911
Repayment of borrowings | (8,643) | (4,476) | (1,748)
Lease payments | (2,417) | (2,990) |
Non-cash changes |  |  |
Closing balance | 30,160 | 37,696 |
Liabilities Arising From Financing Activities [Member] |  |  |
Disclosure Of Detailed Information About Borrowings [Line Items] |  |  |
Opening balance | 47,578 | 43,523 |
Cash ﬂows |  |  |
Proceeds from issuance of borrowings | 4,400 | 4,851 |
Repayment of borrowings | (8,643) | (4,476) |
Lease payments | (2,417) | (2,990) |
Non-cash changes |  |  |
Effect of foreign exchange movement | (4,030) | 1,748 |
Revaluation due to changes in credit risk | (99) | 651 |
Other changes in fair value | 136 | 343 |
Acquisition of new lease contracts | 2,604 | 2,300 |
Reclassiﬁcation |  | 1,767 |
Other non-cash movements | (69) | (139) |
Closing balance | kr 39,460 | kr 47,578 | kr 43,523

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- Definition The amount of additions to right-of-use assets. [Refer: Right-of-use assets] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 16 -IssueDate 2020-01-01 -Paragraph 53 -Subparagraph h -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=16&code=ifrs-tx-2020-en-r&anchor=para_53_h&doctype=Standard -URIDate 2020-01-01 + Details
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