Statement Of Comprehensive Income [Abstract]

Mondi PLC - Filing #1589362

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
Statement of comprehensive income [abstract]
Profit (loss)	17,000,000 EUR	9,000,000 EUR	— EUR	— EUR	— EUR	756,000,000 EUR	764,000,000 EUR	773,000,000 EUR	756,000,000 EUR	582,000,000 EUR	— EUR	45,000,000 EUR	602,000,000 EUR	647,000,000 EUR	20,000,000 EUR	582,000,000 EUR	— EUR	— EUR
Other comprehensive income [abstract]
Components of other comprehensive income that will not be reclassified to profit or loss, before tax [abstract]
Other comprehensive income, before tax, gains (losses) on remeasurements of defined benefit plans	—	—	—	—	—	—	—	12,000,000 EUR	—	—	—	—	2,000,000 EUR	—	—	—	—	—
Components of other comprehensive income that will be reclassified to profit or loss, before tax [abstract]
Exchange differences on translation [abstract]
Gains (losses) on exchange differences on translation of foreign operations, before tax	—	—	—	—	—	—	—	26,000,000 EUR	—	—	—	—	367,000,000 EUR	—	—	—	—	—
Cash flow hedges [abstract]
Gains (losses) on cash flow hedges, before tax	—	—	—	—	—	—	—	1,000,000 EUR	—	—	—	—	4,000,000 EUR	—	—	—	—	—
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	—	—	—	—	—	—	—	1,000,000 EUR	—	—	—	—	— EUR	—	—	—	—	—
Other comprehensive income, before tax	—	—	—	—	—	—	—	38,000,000 EUR	—	—	—	—	365,000,000 EUR	—	—	—	—	—
Income tax relating to components of other comprehensive income that will not be reclassified to profit or loss [abstract]
Income tax relating to remeasurements of defined benefit plans included in other comprehensive income	—	—	—	—	—	—	—	4,000,000 EUR	—	—	—	—	3,000,000 EUR	—	—	—	—	—
Income tax relating to components of other comprehensive income that will be reclassified to profit or loss [abstract]
Income tax relating to exchange differences on translation of foreign operations included in other comprehensive income	—	—	—	—	—	—	—	— EUR	—	—	—	—	— EUR	—	—	—	—	—
Income tax relating to cash flow hedges included in other comprehensive income	—	—	—	—	—	—	—	— EUR	—	—	—	—	— EUR	—	—	—	—	—
Income tax relating to share of other comprehensive income of associates and joint ventures accounted for using equity method that will be reclassified to profit or loss	—	—	—	—	—	—	—	— EUR	—	—	—	—	— EUR	—	—	—	—	—
Other comprehensive income	4,000,000 EUR	—	— EUR	38,000,000 EUR	— EUR	38,000,000 EUR	—	34,000,000 EUR	— EUR	— EUR	— EUR	—	368,000,000 EUR	—	9,000,000 EUR	359,000,000 EUR	— EUR	359,000,000 EUR
Comprehensive income	13,000,000 EUR	—	— EUR	38,000,000 EUR	— EUR	794,000,000 EUR	—	807,000,000 EUR	756,000,000 EUR	582,000,000 EUR	— EUR	—	234,000,000 EUR	—	11,000,000 EUR	223,000,000 EUR	— EUR	359,000,000 EUR
Comprehensive income attributable to [abstract]
Comprehensive income, attributable to owners of parent	—	—	—	—	—	—	—	794,000,000 EUR	—	—	—	—	223,000,000 EUR	—	—	—	—	—
Comprehensive income, attributable to non-controlling interests	—	—	—	—	—	—	—	13,000,000 EUR	—	—	—	—	11,000,000 EUR	—	—	—	—	—