Statement Of Changes In Equity [Abstract]

NN Group N.V. - Filing #2154250

Concept	2023-01-01 to 2023-12-31	As at 2023-12-31	2023-01-01 to 2023-12-31	2023-01-01 to 2023-12-31	2023-01-01 to 2023-12-31	As at 2023-12-31	2023-01-01 to 2023-12-31	As at 2023-12-31	As at 2023-12-31	2023-01-01 to 2023-12-31	As at 2023-12-31	2023-01-01 to 2023-12-31	As at 2023-12-31	As at 2023-12-31	As at 2023-01-01	As at 2023-01-01	As at 2023-01-01	As at 2023-01-01	As at 2023-01-01	As at 2023-01-01	As at 2023-01-01	As at 2022-12-31	2022-01-01 to 2022-12-31	2022-01-01 to 2022-12-31	2022-01-01 to 2022-12-31	2022-01-01 to 2022-12-31	As at 2022-12-31	As at 2022-12-31	As at 2022-12-31	As at 2022-12-31	As at 2022-12-31	As at 2022-12-31	2022-01-01 to 2022-12-31	2022-01-01 to 2022-12-31	2022-01-01 to 2022-12-31	As at 2022-01-01	As at 2022-01-01	As at 2022-01-01	As at 2022-01-01	As at 2022-01-01	As at 2022-01-01	As at 2022-01-01	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
Statement of changes in equity [abstract]
Statement of changes in equity [line items]
Equity	—	21, 119 EUR	—	—	—	7 ,011 EUR	—	79,000,000 EUR	12,579,000,000 EUR	—	34,000,000 EUR	—	19,62 4 EUR	1,416,000,000 EUR	1,7 64 EUR	6 ,652 EUR	72,000,000 EUR	19,265,000,000 EUR	35,000,000 EUR	12,578,000,000 EUR	21, 101 EUR	21, 101 EUR	—	—	—	—	6,6 52 EUR	72,000,000 EUR	12,578,000,000 EUR	35,000,000 EUR	19,265,000,000 EUR	1, 7 64 EUR	—	—	—	1, 764 EUR	2 1,62 4 EUR	12,575,000,000 EUR	38,000,000 EUR	244,000,000 EUR	23 ,632 EUR	9,01 1 EUR	1,7 64 EUR	38,000,000 EUR	20,2 75 EUR	34,918,000,000 EUR	32,888,000,000 EUR	12,575,000,000 EUR	266,000,000 EUR
Changes in equity [abstract]
Comprehensive income [abstract]
Profit (loss)	1, 184 EUR	—	1,172,000,000 EUR	1,172,000,000 EUR	12,000,000 EUR	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	1,634,000,000 EUR	1,62 9 EUR	5,000,000 EUR	—	—	—	—	—	—	1,634,000,000 EUR	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Other comprehensive income	312,000,000 EUR	—	312,000,000 EUR	312,000,000 EUR	0 EUR	—	0 EUR	—	—	0 EUR	—	0 EUR	—	—	—	—	—	—	—	—	—	—	0 EUR	2,385,000,000 EUR	2,430,000,000 EUR	45,000,000 EUR	—	—	—	—	—	—	2,385,000,000 EUR	0 EUR	0 EUR	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Comprehensive income	1,496,000,000 EUR	—	1,484,000,000 EUR	1,484,000,000 EUR	12,000,000 EUR	—	0 EUR	—	—	0 EUR	—	0 EUR	—	—	—	—	—	—	—	—	—	—	0 EUR	751,000,000 EUR	801,000,000 EUR	50,000,000 EUR	—	—	—	—	—	—	751,000,000 EUR	0 EUR	0 EUR	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Dividends recognised as distributions to owners	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	413,000,000 EUR	535,000,000 EUR	122,000,000 EUR	—	—	—	—	—	—	413,000,000 EUR	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Increase (decrease) through treasury share transactions, equity	427,000,000 EUR	—	422,000,000 EUR	422,000,000 EUR	5,000,000 EUR	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	1,391,000,000 EUR	1,391,000,000 EUR	—	—	—	—	—	—	—	1,391,000,000 EUR	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Increase (decrease) through share-based payment transactions, equity	—	—	632,000,000 EUR	632,000,000 EUR	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—