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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Service fee revenue (approximately) | 1.00% | 1.00% | 1.00%
Accrued sales returns | $ 52 |  |
Accrued sales incentives | 109 | $ 114 |
Accrued vendor rebates | 150 | 155 |
Advertising expense | $ 750 | 638 | $ 519
Percentage of LIFO inventory | 79.00% |  |
Inventory, LIFO reserve | $ 804 | 770 |
Inventory, LIFO reserve, effect on income, net | $ 26 | $ 58 | $ 139
Minimum |  |  |
Operating lease renewal term | 1 year |  |
Capitalized software amortization period | 3 years |  |
Minimum | Furniture, fixtures, machinery and equipment |  |  |
Useful life |  | 3 years |
Minimum | Buildings, Structures And Improvement |  |  |
Useful life | 10 years |  |
Maximum |  |  |
Operating lease renewal term | 30 years |  |
Capitalized software amortization period | 5 years |  |
Maximum | Furniture, fixtures, machinery and equipment |  |  |
Useful life |  | 15 years |
Maximum | Buildings, Structures And Improvement |  |  |
Useful life | 50 years |  |

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- Definition Accrued Vendor Rebates + References No definition available. + Details
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- Definition Grainger's Service Fee Revenue as a percentage of sales. + References No definition available. + Details
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- Definition Amount charged to advertising expense for the period, which are expenses incurred with the objective of increasing revenue for a specified brand, product or product line. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 720 -SubTopic 35 -Name Accounting Standards Codification -Section 55 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147483385/720-35-55-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 720 -SubTopic 35 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147483406/720-35-50-1 + Details
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- Definition Amount of liability for consideration received or receivable from customer which is not included in transaction price, when consideration is expected to be refunded to customer. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 27 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479777/606-10-55-27 + Details
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- Definition Amount by which inventory stated at last-in first-out (LIFO) is less than (in excess of) inventory stated at other inventory cost methods. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(6)(c)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 + Details
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- Definition The difference between the change in the inventory reserve representing the cumulative difference in cost between the first in, first out and the last in, first out inventory valuation methods and any LIFO decrement which have been reflected in the statement of income during the period. + References No definition available. + Details
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- Definition Term of lessee's operating lease renewal, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (a)(3) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478964/842-20-50-3 + Details
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