Statement Of Changes In Equity [Abstract]

Croda International PLC - Filing #1586580

Concept	2021-01-01 to 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	2021-01-01 to 2021-12-31	As at 2021-12-31	2021-01-01 to 2021-12-31	As at 2021-12-31	2021-01-01 to 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	2020-01-01 to 2020-12-31	2020-01-01 to 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	2020-01-01 to 2020-12-31	As at 2020-12-31	2020-01-01 to 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	—	1,073,000,000 GBP	—	—	43,800,000 GBP	—	1,765,900,000 GBP	—	707,700,000 GBP	—	12,800,000 GBP	16,200,000 GBP	—	—	—	842,600,000 GBP	9,300,000 GBP	—	—	16,200,000 GBP	—	19,300,000 GBP	707,700,000 GBP	—	—	1,595,100,000 GBP	—	—	7,000,000 GBP	34,400,000 GBP	93,300,000 GBP	868,600,000 GBP	718,800,000 GBP	15,100,000 GBP
Changes in equity [abstract]
Comprehensive income [abstract]
Profit (loss)	2,000,000 GBP	—	28,000,000 GBP	350,800,000 GBP	—	– GBP	—	– GBP	—	– GBP	—	—	322,800,000 GBP	320,800,000 GBP	201,600,000 GBP	—	—	26,600,000 GBP	228,200,000 GBP	—	201,600,000 GBP	—	—	– GBP	– GBP	—	– GBP	– GBP	—	—	—	—	—	—
Other comprehensive income	100,000 GBP	—	—	—	—	63,100,000 GBP	—	– GBP	—	– GBP	—	—	30,700,000 GBP	32,300,000 GBP	26,600,000 GBP	—	—	—	—	—	41,600,000 GBP	—	—	15,100,000 GBP	– GBP	—	100,000 GBP	– GBP	—	—	—	—	—	—
Comprehensive income	2,100,000 GBP	—	—	—	—	63,100,000 GBP	—	– GBP	—	– GBP	—	—	292,100,000 GBP	353,100,000 GBP	228,200,000 GBP	—	—	—	—	—	243,200,000 GBP	—	—	15,100,000 GBP	– GBP	—	100,000 GBP	– GBP	—	—	—	—	—	—
Issue of equity	200,000 GBP	—	—	—	—	– GBP	—	– GBP	—	– GBP	—	—	200,000 GBP	– GBP	615,500,000 GBP	—	—	—	—	—	– GBP	—	—	– GBP	1,100,000 GBP	—	– GBP	614,400,000 GBP	—	—	—	—	—	—
Dividends recognised as distributions to owners	– GBP	—	—	—	—	– GBP	—	– GBP	—	– GBP	—	—	132,500,000 GBP	132,500,000 GBP	115,900,000 GBP	—	—	—	—	—	115,900,000 GBP	—	—	– GBP	– GBP	—	– GBP	– GBP	—	—	—	—	—	—
Increase (decrease) through treasury share transactions, equity	– GBP	—	—	—	—	– GBP	—	– GBP	—	– GBP	—	—	2,400,000 GBP	2,400,000 GBP	6,900,000 GBP	—	—	—	—	—	6,900,000 GBP	—	—	– GBP	– GBP	—	– GBP	– GBP	—	—	—	—	—	—
Increase (decrease) through share-based payment transactions, equity	– GBP	—	—	—	—	– GBP	—	– GBP	—	– GBP	—	—	12,700,000 GBP	12,700,000 GBP	3,400,000 GBP	—	—	—	—	—	3,400,000 GBP	—	—	– GBP	– GBP	—	– GBP	– GBP	—	—	—	—	—	—