Analysis Of Income And Expense [Abstract]

Swedbank A - Filing #2620192

Concept	2021-01-01 to 2021-12-31	2021-01-01 to 2021-12-31	2021-01-01 to 2021-12-31	2021-01-01 to 2021-12-31	2021-01-01 to 2021-12-31	2021-01-01 to 2021-12-31	2021-01-01 to 2021-12-31	2021-01-01 to 2021-12-31	2021-01-01 to 2021-12-31	2020-01-01 to 2020-12-31	2020-01-01 to 2020-12-31	2020-01-01 to 2020-12-31	2020-01-01 to 2020-12-31	2020-01-01 to 2020-12-31	2020-01-01 to 2020-12-31	2020-01-01 to 2020-12-31	2020-01-01 to 2020-12-31	2020-01-01 to 2020-12-31
Analysis of income and expense [abstract]
Revenue [abstract]
Interest income	—	—	—	—	—	—	—	30 364 SEK	—	—	33 791 SEK	—	—	—	—	—	—	—
Interest income on other financial assets	—	—	—	—	—	—	—	452,000,000 SEK	—	—	1 771 SEK	—	—	—	—	—	—	—
Material income and expense [abstract]
Interest expense	—	—	—	—	—	—	—	4 107 SEK	—	—	6 938 SEK	—	—	—	—	—	—	—
Interest income (expense)	—	—	—	—	—	—	—	26 257 SEK	—	—	26 853 SEK	—	—	—	—	—	—	—
Selling, general and administrative expense [abstract]
General and administrative expense	—	—	—	—	—	—	—	6 477 SEK	—	—	7 107 SEK	—	—	—	—	—	—	—
Revenue and other operating income	—	—	—	—	—	—	—	46 890 SEK	—	—	45 676 SEK	—	—	—	—	—	—	—
Operating expense	—	—	—	—	—	—	—	20 847 SEK	—	—	24 560 SEK	—	—	—	—	—	—	—
Fee and commission income (expense) [abstract]
Fee and commission income [abstract]
Fee and commission income	—	—	—	—	—	—	—	22 407 SEK	—	—	19 476 SEK	—	—	—	—	—	—	—
Fee and commission expense [abstract]
Fee and commission expense	—	—	—	—	—	—	—	7 554 SEK	—	—	6 706 SEK	—	—	—	—	—	—	—
Fee and commission income (expense)	—	—	—	—	—	—	—	14 853 SEK	—	—	12 770 SEK	—	—	—	—	—	—	—
Expenses by nature [abstract]
Classes of employee benefits expense [abstract]
Employee benefits expense	—	—	—	—	—	—	—	12 739 SEK	—	—	11 873 SEK	—	—	—	—	—	—	—
Depreciation, amortisation and impairment loss (reversal of impairment loss) recognised in profit or loss [abstract]
Depreciation and amortisation expense [abstract]
Depreciation and amortisation expense	—	—	—	—	—	—	—	1 631 SEK	—	—	1 580 SEK	—	—	—	—	—	—	—
Other expenses, by nature	—	—	—	—	—	—	—	—	—	—	4 000 SEK	—	—	—	—	—	—	—
Disclosure of attribution of expenses by nature to their function [text block]	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Disclosure of attribution of expenses by nature to their function [abstract]
Disclosure of attribution of expenses by nature to their function [line items]
Share of other comprehensive income of associates and joint ventures accounted for using equity method, before tax [abstract]
Share of other comprehensive income of associates and joint ventures accounted for using equity method that will not be reclassified to profit or loss, before tax	—	—	—	—	—	—	—	21,000,000 SEK	—	—	96,000,000 SEK	—	—	—	—	—	—	—
Share of other comprehensive income of associates and joint ventures accounted for using equity method that will be reclassified to profit or loss, before tax	—	—	—	—	—	—	—	91,000,000 SEK	—	—	84,000,000 SEK	—	—	—	—	—	—	—
Income tax relating to components of other comprehensive income [abstract]
Income tax relating to components of other comprehensive income that will not be reclassified to profit or loss	—	—	—	—	—	—	—	347,000,000 SEK	—	—	1 065 SEK	—	—	—	—	—	—	—
Income tax relating to components of other comprehensive income	—	1,000,000 SEK	1,000,000 SEK	0 SEK	150,000,000 SEK	—	199,000,000 SEK	199,000,000 SEK	347,000,000 SEK	1 064 SEK	1 371 SEK	—	—	2,000,000 SEK	1,000,000 SEK	1 371 SEK	321,000,000 SEK	13,000,000 SEK
Comprehensive income, continuing and discontinued operations [abstract]
Comprehensive income	1,000,000 SEK	4,000,000 SEK	1,000,000 SEK	0 SEK	579,000,000 SEK	939,000,000 SEK	22 596 SEK	22 597 SEK	22 231 SEK	17 127 SEK	16 383 SEK	1 924 SEK	0 SEK	7,000,000 SEK	5,000,000 SEK	16 383 SEK	1 211 SEK	29,000,000 SEK
Comprehensive income attributable to owners of parent, continuing and discontinued operations [abstract]
Comprehensive income, attributable to owners of parent	—	—	—	—	—	—	—	22 596 SEK	—	—	16 383 SEK	—	—	—	—	—	—	—
Comprehensive income attributable to non-controlling interests, continuing and discontinued operations [abstract]
Comprehensive income, attributable to non-controlling interests	—	—	—	—	—	—	—	1,000,000 SEK	—	—	0 SEK	—	—	—	—	—	—	—