Statement Of Financial Position [Abstract]
| Concept |
As at 2022-04-30 |
As at 2022-04-30 |
As at 2022-04-30 |
As at 2022-04-30 |
As at 2022-04-30 |
As at 2022-04-30 |
As at 2021-04-30 |
As at 2021-04-30 |
As at 2021-04-30 |
As at 2021-04-30 |
As at 2021-04-30 |
As at 2021-04-30 |
As at 2020-04-30 |
As at 2020-04-30 |
As at 2020-04-30 |
As at 2020-04-30 |
As at 2020-04-30 |
As at 2020-04-30 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Statement of financial position [abstract] | ||||||||||||||||||
| Assets [abstract] | ||||||||||||||||||
| Non-current assets [abstract] | ||||||||||||||||||
| Goodwill | — | — | — | — | — |
8,889,000,000
SEK
|
— | — | — | — |
7,356,000,000
SEK
|
— | — | — | — | — | — | — |
| Intangible assets other than goodwill | — | — | — | — | — |
748,000,000
SEK
|
— | — | — | — |
700,000,000
SEK
|
— | — | — | — | — | — | — |
| Investments in subsidiaries, joint ventures and associates reported in separate financial statements | — | — | — | — | — |
71,000,000
SEK
|
— | — | — | — |
258,000,000
SEK
|
— | — | — | — | — | — | — |
| Deferred tax assets | — | — | — | — | — |
1,720,000,000
SEK
|
— | — | — | — |
1,954,000,000
SEK
|
— | — | — | — | — | — | — |
| Other non-current financial assets | — | — | — | — | — |
131,000,000
SEK
|
— | — | — | — |
151,000,000
SEK
|
— | — | — | — | — | — | — |
| Non-current assets | — | — | — | — | — |
3 624,2
SEK
|
— | — | — | — |
3 301,9
SEK
|
— | — | — | — | — | — | — |
| Current assets [abstract] | ||||||||||||||||||
| Trade and other current receivables | — | — | — | — | — |
1 975,4
SEK
|
— | — | — | — |
1 597,5
SEK
|
— | — | — | — | — | — | — |
| Current tax assets, current | — | — | — | — | — |
812,000,000
SEK
|
— | — | — | — |
676,000,000
SEK
|
— | — | — | — | — | — | — |
| Other current financial assets | — | — | — | — | — |
34,000,000
SEK
|
— | — | — | — |
26,000,000
SEK
|
— | — | — | — | — | — | — |
| Other current non-financial assets | — | — | — | — | — |
1,319,000,000
SEK
|
— | — | — | — |
1,387,000,000
SEK
|
— | — | — | — | — | — | — |
| Cash and cash equivalents | — | — | — | — | — |
3,359,000,000
SEK
|
— | — | — | — |
3,191,000,000
SEK
|
— | — | — | — | — |
3,782,000,000
SEK
|
— |
| Current assets | — | — | — | — | — |
4 848,2
SEK
|
— | — | — | — |
3 653,6
SEK
|
— | — | — | — | — | — | — |
| Assets | — | — | — | — | — |
8 472,4
SEK
|
— | — | — | — |
6 955,5
SEK
|
— | — | — | — | — | — | — |
| Equity and liabilities [abstract] | ||||||||||||||||||
| Equity [abstract] | ||||||||||||||||||
| Retained earnings | — | — | — | — | — |
3 693,4
SEK
|
— | — | — | — |
3 307,2
SEK
|
— | — | — | — | — | — | — |
| Share premium | — | — | — | — | — |
520,000,000
SEK
|
— | — | — | — |
520,000,000
SEK
|
— | — | — | — | — | — | — |
| Equity attributable to owners of parent | — | — | — | — | — |
3 815,1
SEK
|
— | — | — | — |
3 305,0
SEK
|
— | — | — | — | — | — | — |
| Non-controlling interests | — | — | — | — | — |
384,000,000
SEK
|
— | — | — | — |
251,000,000
SEK
|
— | — | — | — | — | — | — |
| Equity |
70,000,000
SEK
|
384,000,000
SEK
|
520,000,000
SEK
|
3 693,4
SEK
|
627,000,000
SEK
|
3 853,5
SEK
|
3 307,2
SEK
|
251,000,000
SEK
|
22,000,000
SEK
|
520,000,000
SEK
|
3 330,1
SEK
|
564,000,000
SEK
|
1,178,000,000
SEK
|
520,000,000
SEK
|
2 892,8
SEK
|
199,000,000
SEK
|
3 084,7
SEK
|
22,000,000
SEK
|
| Liabilities [abstract] | ||||||||||||||||||
| Non-current liabilities [abstract] | ||||||||||||||||||
| Non-current provisions [abstract] | ||||||||||||||||||
| Non-current provisions for employee benefits | — | — | — | — | — |
787,000,000
SEK
|
— | — | — | — |
749,000,000
SEK
|
— | — | — | — | — | — | — |
| Other non-current provisions | — | — | — | — | — |
776,000,000
SEK
|
— | — | — | — |
657,000,000
SEK
|
— | — | — | — | — | — | — |
| Deferred tax liabilities | — | — | — | — | — |
769,000,000
SEK
|
— | — | — | — |
766,000,000
SEK
|
— | — | — | — | — | — | — |
| Other non-current financial liabilities | — | — | — | — | — |
1 066,0
SEK
|
— | — | — | — |
8,471,000,000
SEK
|
— | — | — | — | — | — | — |
| Other non-current non-financial liabilities | — | — | — | — | — |
425,000,000
SEK
|
— | — | — | — |
427,000,000
SEK
|
— | — | — | — | — | — | — |
| Non-current liabilities | — | — | — | — | — |
1 506,5
SEK
|
— | — | — | — |
1 311,4
SEK
|
— | — | — | — | — | — | — |
| Current liabilities [abstract] | ||||||||||||||||||
| Trade and other current payables | — | — | — | — | — |
9,834,000,000
SEK
|
— | — | — | — |
7,479,000,000
SEK
|
— | — | — | — | — | — | — |
| Current tax liabilities, current | — | — | — | — | — |
1,446,000,000
SEK
|
— | — | — | — |
880,000,000
SEK
|
— | — | — | — | — | — | — |
| Other current non-financial liabilities | — | — | — | — | — |
4,459,000,000
SEK
|
— | — | — | — |
3,818,000,000
SEK
|
— | — | — | — | — | — | — |
| Current liabilities | — | — | — | — | — |
3 112,4
SEK
|
— | — | — | — |
2 314,0
SEK
|
— | — | — | — | — | — | — |
| Liabilities | — | — | — | — | — |
4 618,9
SEK
|
— | — | — | — |
3 625,4
SEK
|
— | — | — | — | — | — | — |
| Equity and liabilities | — | — | — | — | — |
8 472,4
SEK
|
— | — | — | — |
6 955,5
SEK
|
— | — | — | — | — | — | — |