Statement Of Financial Position [Abstract]

Grainger PLC - Filing #2515906

Concept	As at 2024-09-30	As at 2024-09-30	As at 2024-09-30	As at 2024-09-30	As at 2024-09-30	As at 2024-09-30	As at 2024-09-30	As at 2023-09-30	As at 2023-09-30	As at 2023-09-30	As at 2023-09-30	As at 2023-09-30	As at 2023-09-30	As at 2023-09-30	As at 2022-09-30	As at 2022-09-30	As at 2022-09-30	As at 2022-09-30	As at 2022-09-30	As at 2022-09-30	As at 2022-09-30
Statement of financial position [abstract]
Assets [abstract]
Non-current assets [abstract]
Property, plant and equipment	10,600,000 GBP	—	—	—	—	—	—	—	—	—	—	—	8,600,000 GBP	—	—	—	—	—	—	—	—
Investment property	2,996,800,000 GBP	—	—	—	—	—	—	—	—	—	—	—	2,948,900,000 GBP	—	—	—	—	—	—	—	—
Deferred tax assets	6,100,000 GBP	—	—	—	—	—	—	—	—	—	—	—	3,700,000 GBP	—	—	—	—	—	—	—	—
Non-current assets	3,170,500,000 GBP	—	—	—	—	—	—	—	—	—	—	—	3,129,800,000 GBP	—	—	—	—	—	—	—	—
Current assets [abstract]
Current inventories	331,600,000 GBP	—	—	—	—	—	—	—	—	—	—	—	392,200,000 GBP	—	—	—	—	—	—	—	—
Trade and other current receivables	90,900,000 GBP	—	—	—	—	—	—	—	—	—	—	—	34,000,000 GBP	—	—	—	—	—	—	—	—
Cash and cash equivalents	93,200,000 GBP	—	—	—	—	—	—	—	—	—	—	—	121,000,000 GBP	—	—	—	—	95,900,000 GBP	—	—	—
Current assets	572,200,000 GBP	—	—	—	—	—	—	—	—	—	—	—	592,500,000 GBP	—	—	—	—	—	—	—	—
Assets	3,742,700,000 GBP	—	—	—	—	—	—	—	—	—	—	—	3,722,300,000 GBP	—	—	—	—	—	—	—	—
Equity and liabilities [abstract]
Equity [abstract]
Issued capital	37,200,000 GBP	—	—	—	—	—	—	—	—	—	—	—	37,200,000 GBP	—	—	—	—	—	—	—	—
Retained earnings	1,013,800,000 GBP	—	—	—	—	—	—	—	—	—	—	—	1,033,200,000 GBP	—	—	—	—	—	—	—	—
Share premium	817,900,000 GBP	—	—	—	—	—	—	—	—	—	—	—	817,800,000 GBP	—	—	—	—	—	—	—	—
Equity	1,893,700,000 GBP	20,100,000 GBP	37,200,000 GBP	4,400,000 GBP	817,900,000 GBP	1,013,800,000 GBP	300,000 GBP	20,000,000 GBP	20,100,000 GBP	1,033,200,000 GBP	817,800,000 GBP	37,200,000 GBP	1,928,600,000 GBP	300,000 GBP	32,100,000 GBP	20,100,000 GBP	817,600,000 GBP	1,966,800,000 GBP	1,059,600,000 GBP	37,100,000 GBP	300,000 GBP
Liabilities [abstract]
Non-current liabilities [abstract]
Non-current provisions [abstract]
Non-current provisions	1,000,000 GBP	—	—	—	—	—	—	—	—	—	—	—	1,100,000 GBP	—	—	—	—	—	—	—	—
Trade and other non-current payables	6,300,000 GBP	—	—	—	—	—	—	—	—	—	—	—	6,900,000 GBP	—	—	—	—	—	—	—	—
Deferred tax liabilities	121,500,000 GBP	—	—	—	—	—	—	—	—	—	—	—	122,300,000 GBP	—	—	—	—	—	—	—	—
Non-current liabilities	1,721,700,000 GBP	—	—	—	—	—	—	—	—	—	—	—	1,663,800,000 GBP	—	—	—	—	—	—	—	—
Current liabilities [abstract]
Current provisions [abstract]
Current provisions	13,200,000 GBP	—	—	—	—	—	—	—	—	—	—	—	8,600,000 GBP	—	—	—	—	—	—	—	—
Trade and other current payables	114,100,000 GBP	—	—	—	—	—	—	—	—	—	—	—	120,700,000 GBP	—	—	—	—	—	—	—	—
Current liabilities	127,300,000 GBP	—	—	—	—	—	—	—	—	—	—	—	129,900,000 GBP	—	—	—	—	—	—	—	—
Liabilities	1,849,000,000 GBP	—	—	—	—	—	—	—	—	—	—	—	1,793,700,000 GBP	—	—	—	—	—	—	—	—