Financial Instruments - Schedule of Measured At Fair Value on Recurring Basis (Details) - USD ($) $ in Millions	Jul. 31, 2024	Jan. 31, 2024
Long-term
Derivative contract liabilities	$ (10)	$ (15)
Total	1,517	1,815
Derivative contract assets
Long-term
Derivative contract assets, fair value	12	21
Commercial paper
Short-term
Fair Value	188	159
Agency bonds
Long-term
Fair Value		36
U.S. government securities
Cash equivalents:
Fair Value	18
Short-term
Fair Value	45	70
Long-term
Fair Value	24	24
Corporate debt securities
Short-term
Fair Value	93	75
Long-term
Fair Value	93	104
Asset-backed securities
Short-term
Fair Value	26	28
Long-term
Fair Value	62	59
Agency mortgage-backed securities
Long-term
Fair Value	42	36
Other
Short-term
Fair Value	13	22
Long-term
Fair Value	10	11
Mutual funds
Long-term
Long-term other assets, fair value	116	100
Money market funds
Cash equivalents:
Fair Value	456	693
Commercial paper
Cash equivalents:
Fair Value	242	250
Certificates of deposit
Cash equivalents:
Fair Value	77	80
Other
Cash equivalents:
Fair Value	10	6
U.S. government securities
Cash equivalents:
Fair Value	18	92
Level 1
Long-term
Derivative contract liabilities	0	0
Total	572	793
Level 1 | Derivative contract assets
Long-term
Derivative contract assets, fair value	0	0
Level 1 | Commercial paper
Short-term
Fair Value	0	0
Level 1 | Agency bonds
Long-term
Fair Value		0
Level 1 | U.S. government securities
Cash equivalents:
Fair Value	0
Short-term
Fair Value	0	0
Long-term
Fair Value	0	0
Level 1 | Corporate debt securities
Short-term
Fair Value	0	0
Long-term
Fair Value	0	0
Level 1 | Asset-backed securities
Short-term
Fair Value	0	0
Long-term
Fair Value	0	0
Level 1 | Agency mortgage-backed securities
Long-term
Fair Value	0
Level 1 | Other
Short-term
Fair Value	0	0
Long-term
Fair Value	0	0
Level 1 | Mutual funds
Long-term
Long-term other assets, fair value	116	100
Level 1 | Money market funds
Cash equivalents:
Fair Value	456	693
Level 1 | Commercial paper
Cash equivalents:
Fair Value	0	0
Level 1 | Certificates of deposit
Cash equivalents:
Fair Value	0	0
Level 1 | Other
Cash equivalents:
Fair Value	0	0
Level 1 | U.S. government securities
Cash equivalents:
Fair Value		0
Level 2
Long-term
Derivative contract liabilities	(10)	(15)
Total	945	1,022
Level 2 | Derivative contract assets
Long-term
Derivative contract assets, fair value	12	21
Level 2 | Commercial paper
Short-term
Fair Value	188	159
Level 2 | Agency bonds
Long-term
Fair Value		36
Level 2 | U.S. government securities
Cash equivalents:
Fair Value	18
Short-term
Fair Value	45	70
Long-term
Fair Value	24	24
Level 2 | Corporate debt securities
Short-term
Fair Value	93	75
Long-term
Fair Value	93	104
Level 2 | Asset-backed securities
Short-term
Fair Value	26	28
Long-term
Fair Value	62	59
Level 2 | Agency mortgage-backed securities
Long-term
Fair Value	42
Level 2 | Other
Short-term
Fair Value	13	22
Long-term
Fair Value	10	11
Level 2 | Mutual funds
Long-term
Long-term other assets, fair value	0	0
Level 2 | Money market funds
Cash equivalents:
Fair Value	0	0
Level 2 | Commercial paper
Cash equivalents:
Fair Value	242	250
Level 2 | Certificates of deposit
Cash equivalents:
Fair Value	77	80
Level 2 | Other
Cash equivalents:
Fair Value	10	6
Level 2 | U.S. government securities
Cash equivalents:
Fair Value		92
Level 3
Long-term
Derivative contract liabilities	0	0
Total	0	0
Level 3 | Derivative contract assets
Long-term
Derivative contract assets, fair value	0	0
Level 3 | Commercial paper
Short-term
Fair Value	0	0
Level 3 | Agency bonds
Long-term
Fair Value		0
Level 3 | U.S. government securities
Cash equivalents:
Fair Value	0
Short-term
Fair Value	0	0
Long-term
Fair Value	0	0
Level 3 | Corporate debt securities
Short-term
Fair Value	0	0
Long-term
Fair Value	0	0
Level 3 | Asset-backed securities
Short-term
Fair Value	0	0
Long-term
Fair Value	0	0
Level 3 | Agency mortgage-backed securities
Long-term
Fair Value	0
Level 3 | Other
Short-term
Fair Value	0	0
Long-term
Fair Value	0	0
Level 3 | Mutual funds
Long-term
Long-term other assets, fair value	0	0
Level 3 | Money market funds
Cash equivalents:
Fair Value	0	0
Level 3 | Commercial paper
Cash equivalents:
Fair Value	0	0
Level 3 | Certificates of deposit
Cash equivalents:
Fair Value	0	0
Level 3 | Other
Cash equivalents:
Fair Value	$ 0	0
Level 3 | U.S. government securities
Cash equivalents:
Fair Value		$ 0