Statement Of Changes In Equity [Abstract]

Bunzl PLC - Filing #2004905

Concept	2023-01-01 to 2023-12-31	As at 2023-12-31	As at 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	As at 2023-12-31	As at 2023-12-31	As at 2023-12-31	2023-01-01 to 2023-12-31	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	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	As at 2022-12-31	As at 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 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	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	—	2,966,300,000 GBP	2,876,900,000 GBP	16,100,000 GBP	—	—	—	205,200,000 GBP	—	108,600,000 GBP	170,200,000 GBP	70,900,000 GBP	2,500,000 GBP	1,900,000 GBP	—	2,720,900,000 GBP	—	—	—	—	199,400,000 GBP	16,100,000 GBP	2,532,900,000 GBP	108,500,000 GBP	74,200,000 GBP	2,500,000 GBP	63,400,000 GBP	900,000 GBP	—	—	400,000 GBP	269,200,000 GBP	2,217,000,000 GBP	194,200,000 GBP	108,400,000 GBP	2,216,500,000 GBP	2,500,000 GBP	16,100,000 GBP	52,900,000 GBP	2,500,000 GBP	400,000 GBP	2,203,900,000 GBP	16,100,000 GBP	194,200,000 GBP	12,600,000 GBP	12,600,000 GBP	108,400,000 GBP	269,200,000 GBP	2,204,400,000 GBP	52,900,000 GBP
Changes in equity [abstract]
Comprehensive income [abstract]
Profit (loss)	526,200,000 GBP	—	—	—	526,200,000 GBP	—	—	—	—	—	—	—	—	—	—	—	—	474,400,000 GBP	474,400,000 GBP	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Other comprehensive income	94,900,000 GBP	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	208,200,000 GBP	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Comprehensive income	431,300,000 GBP	—	—	—	529,000,000 GBP	—	96,000,000 GBP	—	—	—	—	—	—	—	1,700,000 GBP	—	—	682,600,000 GBP	479,900,000 GBP	7,700,000 GBP	—	—	—	—	—	—	—	—	—	195,000,000 GBP	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Issue of equity	5,900,000 GBP	—	—	—	—	5,800,000 GBP	—	—	100,000 GBP	—	—	—	—	—	—	—	100,000 GBP	5,300,000 GBP	—	—	—	—	—	—	—	—	—	—	5,200,000 GBP	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Increase (decrease) through share-based payment transactions, equity	20,800,000 GBP	—	—	—	20,800,000 GBP	—	—	—	—	—	—	—	—	—	—	—	—	15,300,000 GBP	15,300,000 GBP	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Amount removed from reserve of cash flow hedges and included in initial cost or other carrying amount of non-financial asset (liability) or firm commitment for which fair value hedge accounting is applied	700,000 GBP	—	—	—	—	—	—	—	—	—	—	—	—	—	700,000 GBP	—	—	9,000,000 GBP	—	9,000,000 GBP	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—