Fair Value Measurements - Other Fair Value Disclosures (Details) - USD ($) $ in Millions	Aug. 01, 2025	Jan. 31, 2025	Aug. 02, 2024
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt carrying value (excluding finance lease obligations)	$ 34,290	$ 35,012	$ 35,441
Unsecured notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt carrying value (excluding finance lease obligations)	34,289	35,011	35,440
Mortgage notes
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt carrying value (excluding finance lease obligations)	1	1	1
Estimate of fair value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt fair value (excluding finance lease obligations)	31,199	31,558	32,749
Estimate of fair value | Unsecured notes | Fair value (Level 1)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt fair value (excluding finance lease obligations)	31,198	31,557	32,748
Estimate of fair value | Mortgage notes | Fair value (Level 2)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt fair value (excluding finance lease obligations)	$ 1	$ 1	$ 1