Goodwill and Intangible Assets - Goodwill Rollforward (Details) $ in Millions	6 Months Ended
Jul. 31, 2026 USD ($)
Goodwill [Roll Forward]
Goodwill, beginning balance	$ 3,945
Other	12
Goodwill, ending balance	3,957
Retail Home Improvement
Goodwill [Roll Forward]
Goodwill, beginning balance	311
Other	0
Goodwill, ending balance	311
Other
Goodwill [Roll Forward]
Goodwill, beginning balance	3,634
Other	12
Goodwill, ending balance	$ 3,646

Amount, after accumulated impairment loss, of asset representing future economic benefit arising from other asset acquired in business combination or from joint venture formation or both, that is not individually identified and separately recognized.

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+ Details