Statement Of Changes In Equity [Abstract]

NCC Group - Filing #703285

Concept	As at 2021-12-31	As at 2021-12-31	As at 2021-12-31	2021-01-01 to 2021-12-31	2021-01-01 to 2021-12-31	As at 2021-12-31	As at 2021-12-31	As at 2021-12-31	2021-01-01 to 2021-12-31	2021-01-01 to 2021-12-31	2020-01-01 to 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 2020-12-31	2020-01-01 to 2020-12-31	As at 2020-12-31	As at 2020-12-31	2020-01-01 to 2020-12-31	As at 2020-12-31	2020-01-01 to 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
Statement of changes in equity [abstract]
Statement of changes in equity [line items]
Equity	3 076 SEK	57,000,000 SEK	1 844 SEK	—	—	5 844 SEK	5 844 SEK	867,000,000 SEK	—	—	—	1 405 SEK	42,000,000 SEK	1 844 SEK	0 SEK	3 972 SEK	867,000,000 SEK	0 SEK	—	42,000,000 SEK	14 4 SEK	—	3 972 SEK	—	3 044 SEK	23,000,000 SEK	1 844 SEK	3 044 SEK	357,000,000 SEK	867,000,000 SEK
Changes in equity [abstract]
Comprehensive income [abstract]
Profit (loss)	—	—	—	—	1 508 SEK	—	—	—	1 508 SEK	1 508 SEK	1 259 SEK	—	—	—	—	—	—	—	1 259 SEK	—	—	—	—	1 259 SEK	—	—	—	—	—	—
Other comprehensive income	—	—	—	15 7 SEK	905,000,000 SEK	—	—	—	90 5 SEK	74 8 SEK	3 2 SEK	—	—	—	—	—	—	—	88,000,000 SEK	—	—	12 1 SEK	—	3 2 SEK	—	—	—	—	—	—
Comprehensive income	—	—	—	15 7 SEK	2 413 SEK	—	—	—	2 413 SEK	2 256 SEK	1 226 SEK	—	—	—	—	—	—	—	1 347 SEK	—	—	12 1 SEK	—	1 226 SEK	—	—	—	—	—	—
Dividends recognised as distributions to owners	—	—	—	—	5 38 SEK	—	—	—	5 3 8 SEK	5 38 SEK	2 6 9 SEK	—	—	—	—	—	—	—	26 9 SEK	—	—	—	—	26 9 SEK	—	—	—	—	—	—
Increase (decrease) through treasury share transactions, equity	—	—	—	—	13,000,000 SEK	—	—	—	13,000,000 SEK	13,000,000 SEK	3 4 SEK	—	—	—	—	—	—	—	3 4 SEK	—	—	—	—	3 4 SEK	—	—	—	—	—	—
Increase (decrease) through share-based payment transactions, equity	—	—	—	—	10,000,000 SEK	—	—	—	10,000,000 SEK	10,000,000 SEK	4,000,000 SEK	—	—	—	—	—	—	—	4,000,000 SEK	—	—	—	—	4,000,000 SEK	—	—	—	—	—	—