Statement Of Changes In Equity [Abstract]

JCDecaux SA - Filing #833600

Concept	2023-01-01 to 2023-12-31	2023-01-01 to 2023-12-31	2023-01-01 to 2023-12-31	2023-01-01 to 2023-12-31	2023-01-01 to 2023-12-31	2023-01-01 to 2023-12-31	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	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
Statement of changes in equity [abstract]
Statement of changes in equity [line items]
Increase (decrease) through change in equity of subsidiaries, equity	72,000,000 EUR	—	404,000,000 EUR	333,000,000 EUR	72,000,000 EUR	0 EUR	93,000,000 EUR	93,000,000 EUR	0 EUR	—	94,000,000 EUR	0 EUR	1,000,000 EUR	0 EUR
Purchase of treasury shares	—	360,000,000 EUR	360,000,000 EUR	—	360,000,000 EUR	0 EUR	—	431,000,000 EUR	—	431,000,000 EUR	431,000,000 EUR	0 EUR	—	—
Sale or issue of treasury shares	2,000,000 EUR	373,000,000 EUR	375,000,000 EUR	—	375,000,000 EUR	0 EUR	2,000,000 EUR	437,000,000 EUR	—	439,000,000 EUR	437,000,000 EUR	0 EUR	—	—