Statement Of Changes In Equity [Abstract]

Signify N.V. - Filing #1842613

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	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
Statement of changes in equity [abstract]
Statement of changes in equity [line items]
Decrease (increase) through tax on share-based payment transactions, equity	2,000,000 EUR	—	2,000,000 EUR	2,000,000 EUR	—	—	2,000,000 EUR	2,000,000 EUR	2,000,000 EUR	—
Purchase of treasury shares	—	83,000,000 EUR	77,000,000 EUR	77,000,000 EUR	7,000,000 EUR	— EUR	38,000,000 EUR	—	38,000,000 EUR	38,000,000 EUR
Sale or issue of treasury shares	60,000,000 EUR	32,000,000 EUR	— EUR	— EUR	28,000,000 EUR	2,000,000 EUR	— EUR	30,000,000 EUR	— EUR	32,000,000 EUR