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Acquisitions - Narrative (Details) - USD ($) $ in Millions			3 Months Ended	12 Months Ended
Acquisitions - Narrative (Details) - USD ($) $ in Millions	Oct. 09, 2025	Jun. 02, 2025	Dec. 31, 2025	Jan. 30, 2026	Jan. 31, 2025	Feb. 02, 2024
Business Combination [Line Items]
Cash purchase price, net of cash acquired				$ 10,088	$ 0	$ 0
Goodwill				$ 3,945	$ 311	$ 311
Artisan Design Group
Business Combination [Line Items]
Cash purchase price, net of cash acquired		$ 1,300
Intangible assets		714
Goodwill		366
Goodwill expected to be tax deductible		302
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	3,254
Goodwill expected to be tax deductible	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
Business Combination, Series of Individually Immaterial Business Combinations \| Foundation Building Materials
Business Combination [Line Items]
Cash purchase price, net of cash acquired			$ 49