Acquisitions - Narrative (Details) - USD ($) $ in Millions			9 Months Ended
	Oct. 09, 2025	Jun. 02, 2025	Oct. 31, 2025	Nov. 01, 2024	Jan. 31, 2025
Business Combination [Line Items]
Cash purchase price, net of cash acquired			$ 10,055	$ 0
Goodwill			$ 3,982	$ 311	$ 311
Artisan Design Group
Business Combination [Line Items]
Cash purchase price, net of cash acquired		$ 1,300
Intangible assets		714
Goodwill		382
Goodwill expected to be deductible for tax purposes		312
Artisan Design Group | Trademarks
Business Combination [Line Items]
Intangible assets		$ 130
Intangible asset, useful life		15 years
Artisan Design Group | Customer relationships
Business Combination [Line Items]
Intangible assets		$ 550
Intangible asset, useful life		20 years
Artisan Design Group | Order backlog
Business Combination [Line Items]
Intangible assets		$ 26
Artisan Design Group | Non-compete agreements
Business Combination [Line Items]
Intangible assets		$ 8
Intangible asset, useful life		5 years
Foundation Building Materials
Business Combination [Line Items]
Cash purchase price, net of cash acquired	$ 8,800
Intangible assets	5,041
Goodwill	3,289
Goodwill expected to be deductible for tax purposes	993
Foundation Building Materials | Trademarks
Business Combination [Line Items]
Intangible assets	$ 950
Intangible asset, useful life	15 years
Foundation Building Materials | Customer relationships
Business Combination [Line Items]
Intangible assets	$ 3,920
Intangible asset, useful life	20 years
Foundation Building Materials | Order backlog
Business Combination [Line Items]
Intangible assets	$ 75
Foundation Building Materials | Non-compete agreements
Business Combination [Line Items]
Intangible assets	$ 96
Intangible asset, useful life	5 years