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Share Based Compensation - Summary of Compensation Expense (Detail) kr in Millions | 12 Months Ended
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Dec. 31, 2020 SEK (kr)
Disclosure of terms and conditions of share based payment arrangement [line Items] |
Compensation expense charged | kr 3,391
Executive performance plan [member] |
Disclosure of terms and conditions of share based payment arrangement [line Items] |
Compensation expense charged | 185
Key contributor plan [member] |
Disclosure of terms and conditions of share based payment arrangement [line Items] |
Compensation expense charged | 1,298
Cash-settled plans [member] |
Disclosure of terms and conditions of share based payment arrangement [line Items] |
Compensation expense charged | 3,208
Cash-settled plans [member] | Executive performance plan [member] |
Disclosure of terms and conditions of share based payment arrangement [line Items] |
Compensation expense charged | 526
Cash-settled plans [member] | Executive performance plan [member] | EPP 2020 [member] |
Disclosure of terms and conditions of share based payment arrangement [line Items] |
Compensation expense charged | 34
Cash-settled plans [member] | Executive performance plan [member] | EPP 2019 [member] |
Disclosure of terms and conditions of share based payment arrangement [line Items] |
Compensation expense charged | 61
Cash-settled plans [member] | Executive performance plan [member] | EPP 2018 [member] |
Disclosure of terms and conditions of share based payment arrangement [line Items] |
Compensation expense charged | 149
Cash-settled plans [member] | Executive performance plan [member] | EPP 2017 [member] |
Disclosure of terms and conditions of share based payment arrangement [line Items] |
Compensation expense charged | 282
Cash-settled plans [member] | Key contributor plan [member] |
Disclosure of terms and conditions of share based payment arrangement [line Items] |
Compensation expense charged | 2,682
Cash-settled plans [member] | Key contributor plan [member] | Key Contributor Plan 2020 (KC Plan 2020) [member] |
Disclosure of terms and conditions of share based payment arrangement [line Items] |
Compensation expense charged | 523
Cash-settled plans [member] | Key contributor plan [member] | Key Contributor Plan2019 |
Disclosure of terms and conditions of share based payment arrangement [line Items] |
Compensation expense charged | 583
Cash-settled plans [member] | Key contributor plan [member] | Key contributor plan 2018 [member] |
Disclosure of terms and conditions of share based payment arrangement [line Items] |
Compensation expense charged | 769
Cash-settled plans [member] | Key contributor plan [member] | Key contributor plan 2017 [member] |
Disclosure of terms and conditions of share based payment arrangement [line Items] |
Compensation expense charged | 807
Reporting year [member] |
Disclosure of terms and conditions of share based payment arrangement [line Items] |
Compensation expense charged | 1,566
Reporting year [member] | Cash-settled plans [member] |
Disclosure of terms and conditions of share based payment arrangement [line Items] |
Compensation expense charged | 1,483
Reporting year [member] | Cash-settled plans [member] | Executive performance plan [member] |
Disclosure of terms and conditions of share based payment arrangement [line Items] |
Compensation expense charged | 185
Reporting year [member] | Cash-settled plans [member] | Executive performance plan [member] | EPP 2020 [member] |
Disclosure of terms and conditions of share based payment arrangement [line Items] |
Compensation expense charged | 34
Reporting year [member] | Cash-settled plans [member] | Executive performance plan [member] | EPP 2019 [member] |
Disclosure of terms and conditions of share based payment arrangement [line Items] |
Compensation expense charged | 50
Reporting year [member] | Cash-settled plans [member] | Executive performance plan [member] | EPP 2018 [member] |
Disclosure of terms and conditions of share based payment arrangement [line Items] |
Compensation expense charged | 76
Reporting year [member] | Cash-settled plans [member] | Executive performance plan [member] | EPP 2017 [member] |
Disclosure of terms and conditions of share based payment arrangement [line Items] |
Compensation expense charged | 25
Reporting year [member] | Cash-settled plans [member] | Key contributor plan [member] |
Disclosure of terms and conditions of share based payment arrangement [line Items] |
Compensation expense charged | 1,298
Reporting year [member] | Cash-settled plans [member] | Key contributor plan [member] | Key Contributor Plan 2020 (KC Plan 2020) [member] |
Disclosure of terms and conditions of share based payment arrangement [line Items] |
Compensation expense charged | 523
Reporting year [member] | Cash-settled plans [member] | Key contributor plan [member] | Key Contributor Plan2019 |
Disclosure of terms and conditions of share based payment arrangement [line Items] |
Compensation expense charged | 335
Reporting year [member] | Cash-settled plans [member] | Key contributor plan [member] | Key contributor plan 2018 [member] |
Disclosure of terms and conditions of share based payment arrangement [line Items] |
Compensation expense charged | 368
Reporting year [member] | Cash-settled plans [member] | Key contributor plan [member] | Key contributor plan 2017 [member] |
Disclosure of terms and conditions of share based payment arrangement [line Items] |
Compensation expense charged | 72
2019 [member] |
Disclosure of terms and conditions of share based payment arrangement [line Items] |
Compensation expense charged | 1,004
2019 [member] | Cash-settled plans [member] |
Disclosure of terms and conditions of share based payment arrangement [line Items] |
Compensation expense charged | 946
2019 [member] | Cash-settled plans [member] | Executive performance plan [member] |
Disclosure of terms and conditions of share based payment arrangement [line Items] |
Compensation expense charged | 180
2019 [member] | Cash-settled plans [member] | Executive performance plan [member] | EPP 2019 [member] |
Disclosure of terms and conditions of share based payment arrangement [line Items] |
Compensation expense charged | 11
2019 [member] | Cash-settled plans [member] | Executive performance plan [member] | EPP 2018 [member] |
Disclosure of terms and conditions of share based payment arrangement [line Items] |
Compensation expense charged | 53
2019 [member] | Cash-settled plans [member] | Executive performance plan [member] | EPP 2017 [member] |
Disclosure of terms and conditions of share based payment arrangement [line Items] |
Compensation expense charged | 116
2019 [member] | Cash-settled plans [member] | Key contributor plan [member] |
Disclosure of terms and conditions of share based payment arrangement [line Items] |
Compensation expense charged | 766
2019 [member] | Cash-settled plans [member] | Key contributor plan [member] | Key Contributor Plan2019 |
Disclosure of terms and conditions of share based payment arrangement [line Items] |
Compensation expense charged | 248
2019 [member] | Cash-settled plans [member] | Key contributor plan [member] | Key contributor plan 2018 [member] |
Disclosure of terms and conditions of share based payment arrangement [line Items] |
Compensation expense charged | 245
2019 [member] | Cash-settled plans [member] | Key contributor plan [member] | Key contributor plan 2017 [member] |
Disclosure of terms and conditions of share based payment arrangement [line Items] |
Compensation expense charged | 273
2018 [member] |
Disclosure of terms and conditions of share based payment arrangement [line Items] |
Compensation expense charged | 641
2018 [member] | Cash-settled plans [member] |
Disclosure of terms and conditions of share based payment arrangement [line Items] |
Compensation expense charged | 609
2018 [member] | Cash-settled plans [member] | Executive performance plan [member] |
Disclosure of terms and conditions of share based payment arrangement [line Items] |
Compensation expense charged | 130
2018 [member] | Cash-settled plans [member] | Executive performance plan [member] | EPP 2018 [member] |
Disclosure of terms and conditions of share based payment arrangement [line Items] |
Compensation expense charged | 20
2018 [member] | Cash-settled plans [member] | Executive performance plan [member] | EPP 2017 [member] |
Disclosure of terms and conditions of share based payment arrangement [line Items] |
Compensation expense charged | 110
2018 [member] | Cash-settled plans [member] | Key contributor plan [member] |
Disclosure of terms and conditions of share based payment arrangement [line Items] |
Compensation expense charged | 479
2018 [member] | Cash-settled plans [member] | Key contributor plan [member] | Key contributor plan 2018 [member] |
Disclosure of terms and conditions of share based payment arrangement [line Items] |
Compensation expense charged | 156
2018 [member] | Cash-settled plans [member] | Key contributor plan [member] | Key contributor plan 2017 [member] |
Disclosure of terms and conditions of share based payment arrangement [line Items] |
Compensation expense charged | 323
2017 [member] |
Disclosure of terms and conditions of share based payment arrangement [line Items] |
Compensation expense charged | 180
2017 [member] | Cash-settled plans [member] |
Disclosure of terms and conditions of share based payment arrangement [line Items] |
Compensation expense charged | 170
2017 [member] | Cash-settled plans [member] | Executive performance plan [member] |
Disclosure of terms and conditions of share based payment arrangement [line Items] |
Compensation expense charged | 31
2017 [member] | Cash-settled plans [member] | Executive performance plan [member] | EPP 2017 [member] |
Disclosure of terms and conditions of share based payment arrangement [line Items] |
Compensation expense charged | 31
2017 [member] | Cash-settled plans [member] | Key contributor plan [member] |
Disclosure of terms and conditions of share based payment arrangement [line Items] |
Compensation expense charged | 139
2017 [member] | Cash-settled plans [member] | Key contributor plan [member] | Key contributor plan 2017 [member] |
Disclosure of terms and conditions of share based payment arrangement [line Items] |
Compensation expense charged | 139
Executive team plans [member] |
Disclosure of terms and conditions of share based payment arrangement [line Items] |
Compensation expense charged | 183
Executive team plans [member] | LTV 2020 [member] |
Disclosure of terms and conditions of share based payment arrangement [line Items] |
Compensation expense charged | 23
Executive team plans [member] | LTV 2019 [member] |
Disclosure of terms and conditions of share based payment arrangement [line Items] |
Compensation expense charged | 45
Executive team plans [member] | LTV 2018 [member] |
Disclosure of terms and conditions of share based payment arrangement [line Items] |
Compensation expense charged | 74
Executive team plans [member] | LTV 2017 [member] |
Disclosure of terms and conditions of share based payment arrangement [line Items] |
Compensation expense charged | 41
Executive team plans [member] | Reporting year [member] |
Disclosure of terms and conditions of share based payment arrangement [line Items] |
Compensation expense charged | 83
Executive team plans [member] | Reporting year [member] | LTV 2020 [member] |
Disclosure of terms and conditions of share based payment arrangement [line Items] |
Compensation expense charged | 23
Executive team plans [member] | Reporting year [member] | LTV 2019 [member] |
Disclosure of terms and conditions of share based payment arrangement [line Items] |
Compensation expense charged | 28
Executive team plans [member] | Reporting year [member] | LTV 2018 [member] |
Disclosure of terms and conditions of share based payment arrangement [line Items] |
Compensation expense charged | 28
Executive team plans [member] | Reporting year [member] | LTV 2017 [member] |
Disclosure of terms and conditions of share based payment arrangement [line Items] |
Compensation expense charged | 4
Executive team plans [member] | 2019 [member] |
Disclosure of terms and conditions of share based payment arrangement [line Items] |
Compensation expense charged | 58
Executive team plans [member] | 2019 [member] | LTV 2019 [member] |
Disclosure of terms and conditions of share based payment arrangement [line Items] |
Compensation expense charged | 17
Executive team plans [member] | 2019 [member] | LTV 2018 [member] |
Disclosure of terms and conditions of share based payment arrangement [line Items] |
Compensation expense charged | 28
Executive team plans [member] | 2019 [member] | LTV 2017 [member] |
Disclosure of terms and conditions of share based payment arrangement [line Items] |
Compensation expense charged | 13
Executive team plans [member] | 2018 [member] |
Disclosure of terms and conditions of share based payment arrangement [line Items] |
Compensation expense charged | 32
Executive team plans [member] | 2018 [member] | LTV 2018 [member] |
Disclosure of terms and conditions of share based payment arrangement [line Items] |
Compensation expense charged | 18
Executive team plans [member] | 2018 [member] | LTV 2017 [member] |
Disclosure of terms and conditions of share based payment arrangement [line Items] |
Compensation expense charged | 14
Executive team plans [member] | 2017 [member] |
Disclosure of terms and conditions of share based payment arrangement [line Items] |
Compensation expense charged | 10
Executive team plans [member] | 2017 [member] | LTV 2017 [member] |
Disclosure of terms and conditions of share based payment arrangement [line Items] |
Compensation expense charged | 10
The President and CEO [member] |
Disclosure of terms and conditions of share based payment arrangement [line Items] |
Compensation expense charged | 97
The President and CEO [member] | Reporting year [member] |
Disclosure of terms and conditions of share based payment arrangement [line Items] |
Compensation expense charged | 41
The President and CEO [member] | 2019 [member] |
Disclosure of terms and conditions of share based payment arrangement [line Items] |
Compensation expense charged | 32
The President and CEO [member] | 2018 [member] |
Disclosure of terms and conditions of share based payment arrangement [line Items] |
Compensation expense charged | 18
The President and CEO [member] | 2017 [member] |
Disclosure of terms and conditions of share based payment arrangement [line Items] |
Compensation expense charged | kr 6

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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 amount of compensation to key management personnel. [Refer: Key management personnel of entity or parent [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 24 -IssueDate 2020-01-01 -Paragraph 17 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=24&code=ifrs-tx-2020-en-r&anchor=para_17&doctype=Standard -URIDate 2020-01-01 + Details
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