Statement Of Changes In Equity [Abstract]

Melrose Industries PLC - Filing #1878216

Concept	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	2022-01-01 to 2022-12-31	2022-01-01 to 2022-12-31	As at 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	2022-01-01 to 2022-12-31	2021-01-01 to 2021-12-31	As at 2021-12-31	As at 2021-12-31	2021-01-01 to 2021-12-31	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	2021-01-01 to 2021-12-31	As at 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	As at 2021-12-31	2021-01-01 to 2021-12-31	2021-01-01 to 2021-12-31	As at 2020-12-31	As at 2020-12-31	As at 2020-12-31	As at 2020-12-31	As at 2020-12-31	As at 2020-12-31	As at 2020-12-31	As at 2020-12-31	As at 2020-12-31	As at 2020-12-31
Statement of changes in equity [abstract]
Statement of changes in equity [line items]
Equity	7,168,000,000 GBP	—	—	—	—	—	—	2,330,000,000 GBP	—	39,000,000 GBP	3,271,000,000 GBP	753,000,000 GBP	4,379,000,000 GBP	309,000,000 GBP	638,000,000 GBP	109,000,000 GBP	7,129,000,000 GBP	—	—	—	—	5,319,000,000 GBP	729,000,000 GBP	—	2,330,000,000 GBP	—	—	7,540,000,000 GBP	—	76,000,000 GBP	—	—	109,000,000 GBP	7,507,000,000 GBP	—	3,271,000,000 GBP	333,000,000 GBP	33,000,000 GBP	—	—	861,000,000 GBP	29,000,000 GBP	7,081,000,000 GBP	333,000,000 GBP	109,000,000 GBP	30,000,000 GBP	2,330,000,000 GBP	8,138,000,000 GBP	7,110,000,000 GBP	– GBP
Changes in equity [abstract]
Comprehensive income [abstract]
Profit (loss)	—	– GBP	– GBP	303,000,000 GBP	308,000,000 GBP	5,000,000 GBP	– GBP	—	– GBP	—	—	—	—	—	—	—	—	308,000,000 GBP	– GBP	– GBP	4,000,000 GBP	—	—	– GBP	—	– GBP	833,000,000 GBP	—	– GBP	—	– GBP	– GBP	—	—	– GBP	—	—	—	837,000,000 GBP	833,000,000 GBP	—	—	—	—	—	—	—	—	—	—
Other comprehensive income	—	– GBP	– GBP	496,000,000 GBP	67,000,000 GBP	1,000,000 GBP	– GBP	—	– GBP	—	—	—	—	—	—	—	—	495,000,000 GBP	– GBP	562,000,000 GBP	– GBP	—	—	– GBP	—	– GBP	375,000,000 GBP	—	– GBP	—	– GBP	106,000,000 GBP	—	—	– GBP	—	—	—	375,000,000 GBP	269,000,000 GBP	—	—	—	—	—	—	—	—	—	—
Comprehensive income	—	– GBP	– GBP	193,000,000 GBP	375,000,000 GBP	6,000,000 GBP	– GBP	—	– GBP	—	—	—	—	—	—	—	—	187,000,000 GBP	– GBP	562,000,000 GBP	4,000,000 GBP	—	—	– GBP	—	– GBP	1,208,000,000 GBP	—	– GBP	—	– GBP	106,000,000 GBP	—	—	– GBP	—	—	—	1,212,000,000 GBP	1,102,000,000 GBP	—	—	—	—	—	—	—	—	—	—
Dividends recognised as distributions to owners	—	– GBP	– GBP	77,000,000 GBP	77,000,000 GBP	– GBP	– GBP	—	– GBP	—	—	—	—	—	—	—	—	77,000,000 GBP	– GBP	– GBP	– GBP	—	—	– GBP	—	– GBP	69,000,000 GBP	—	– GBP	—	– GBP	– GBP	—	—	– GBP	—	—	—	69,000,000 GBP	69,000,000 GBP	—	—	—	—	—	—	—	—	—	—
Increase (decrease) through share-based payment transactions, equity	—	– GBP	– GBP	16,000,000 GBP	16,000,000 GBP	– GBP	– GBP	—	– GBP	—	—	—	—	—	—	—	—	16,000,000 GBP	– GBP	– GBP	– GBP	—	—	– GBP	—	– GBP	16,000,000 GBP	—	– GBP	—	– GBP	– GBP	—	—	– GBP	—	—	—	16,000,000 GBP	16,000,000 GBP	—	—	—	—	—	—	—	—	—	—