Statement Of Financial Position [Abstract]
| Concept |
As at 2021-12-31 |
As at 2021-12-31 |
As at 2021-12-31 |
As at 2021-12-31 |
As at 2021-12-31 |
As at 2021-12-31 |
As at 2021-12-31 |
As at 2020-12-31 |
As at 2020-12-31 |
As at 2020-12-31 |
As at 2020-12-31 |
As at 2020-12-31 |
As at 2020-12-31 |
As at 2020-12-31 |
As at 2019-12-31 |
As at 2019-12-31 |
As at 2019-12-31 |
As at 2019-12-31 |
As at 2019-12-31 |
As at 2019-12-31 |
As at 2019-12-31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of financial position [abstract] | |||||||||||||||||||||
| Assets [abstract] | |||||||||||||||||||||
| Non-current assets [abstract] | |||||||||||||||||||||
| Right-of-use assets | — | — | — |
2,366,000,000
SEK
|
— | — | — | — | — | — | — | — | — |
2,037,000,000
SEK
|
— | — | — | — | — | — | — |
| Goodwill | — | — | — |
1 417,8
SEK
|
— | — | — | — | — | — | — | — | — |
9,001,000,000
SEK
|
— | — | — | — | — | — | — |
| Investments accounted for using equity method | — | — | — |
258,000,000
SEK
|
— | — | — | — | — | — | — | — | — |
261,000,000
SEK
|
— | — | — | — | — | — | — |
| Deferred tax assets | — | — | — |
582,000,000
SEK
|
— | — | — | — | — | — | — | — | — |
267,000,000
SEK
|
— | — | — | — | — | — | — |
| Non-current assets | — | — | — |
3 437,0
SEK
|
— | — | — | — | — | — | — | — | — |
2 388,9
SEK
|
— | — | — | — | — | — | — |
| Current assets [abstract] | |||||||||||||||||||||
| Cash and cash equivalents | — | — | — |
4,805,000,000
SEK
|
— | — | — | — | — | — | — | — | — |
6,161,000,000
SEK
|
— | — | — |
4,651,000,000
SEK
|
— | — | — |
| Current assets | — | — | — |
2 907,1
SEK
|
— | — | — | — | — | — | — | — | — |
2 295,5
SEK
|
— | — | — | — | — | — | — |
| Assets | — | — | — |
6 344,1
SEK
|
— | — | — | — | — | — | — | — | — |
4 684,4
SEK
|
— | — | — | — | — | — | — |
| Equity and liabilities [abstract] | |||||||||||||||||||||
| Equity [abstract] | |||||||||||||||||||||
| Issued capital | — | — | — |
1,255,000,000
SEK
|
— | — | — | — | — | — | — | — | — |
1,255,000,000
SEK
|
— | — | — | — | — | — | — |
| Retained earnings | — | — | — |
2 162,1
SEK
|
— | — | — | — | — | — | — | — | — |
1 899,2
SEK
|
— | — | — | — | — | — | — |
| Other equity interest | — | — | — |
4,444,000,000
SEK
|
— | — | — | — | — | — | — | — | — |
4,444,000,000
SEK
|
— | — | — | — | — | — | — |
| Other reserves | — | — | — |
1,258,000,000
SEK
|
— | — | — | — | — | — | — | — | — |
488,000,000
SEK
|
— | — | — | — | — | — | — |
| Equity attributable to owners of parent | — | — | — |
2 857,8
SEK
|
— | — | — | — | — | — | — | — | — |
2 517,9
SEK
|
— | — | — | — | — | — | — |
| Non-controlling interests | — | — | — |
38,000,000
SEK
|
— | — | — | — | — | — | — | — | — |
138,000,000
SEK
|
— | — | — | — | — | — | — |
| Equity |
2 162,1
SEK
|
1,258,000,000
SEK
|
4,444,000,000
SEK
|
2 854,0
SEK
|
2 857,8
SEK
|
38,000,000
SEK
|
1,255,000,000
SEK
|
1 899,2
SEK
|
138,000,000
SEK
|
1,255,000,000
SEK
|
4,444,000,000
SEK
|
488,000,000
SEK
|
2 517,9
SEK
|
2 504,1
SEK
|
42,000,000
SEK
|
4,444,000,000
SEK
|
1,484,000,000
SEK
|
2 417,4
SEK
|
1 694,9
SEK
|
1,255,000,000
SEK
|
2 413,2
SEK
|
| Liabilities [abstract] | |||||||||||||||||||||
| Non-current liabilities [abstract] | |||||||||||||||||||||
| Deferred tax liabilities | — | — | — |
2,034,000,000
SEK
|
— | — | — | — | — | — | — | — | — |
1,044,000,000
SEK
|
— | — | — | — | — | — | — |
| Non-current liabilities | — | — | — |
1 545,8
SEK
|
— | — | — | — | — | — | — | — | — |
9,185,000,000
SEK
|
— | — | — | — | — | — | — |
| Current liabilities [abstract] | |||||||||||||||||||||
| Current tax liabilities, current | — | — | — |
572,000,000
SEK
|
— | — | — | — | — | — | — | — | — |
–
SEK
|
— | — | — | — | — | — | — |
| Current liabilities | — | — | — |
1 944,3
SEK
|
— | — | — | — | — | — | — | — | — |
1 261,8
SEK
|
— | — | — | — | — | — | — |
| Equity and liabilities | — | — | — |
6 344,1
SEK
|
— | — | — | — | — | — | — | — | — |
4 684,4
SEK
|
— | — | — | — | — | — | — |