Financial Instruments - Measured At Fair Value on Recurring Basis (Details) - USD ($) $ in Millions	Jan. 31, 2023	Jan. 31, 2022
Short-term
Total	$ 1,264	$ 805
Foreign Exchange Contract
Short-term
Derivative contract assets, fair value	14	18
Derivative contract liabilities	(31)	(11)
Money market funds
Cash equivalents
Cash equivalents	737	302
Commercial paper
Cash equivalents
Cash equivalents	169	55
Commercial paper | Short-term
Short-term
Debt securities, fair value	42	103
Certificates of deposit
Cash equivalents
Cash equivalents	35	6
Certificates of deposit | Short-term
Short-term
Debt securities, fair value		14
U.S. government securities
Cash equivalents
Cash equivalents	13	25
U.S. government securities | Short-term
Short-term
Debt securities, fair value	17	13
U.S. government securities | Long-term
Short-term
Debt securities, fair value	35
Other
Cash equivalents
Cash equivalents	12	4
Short-term
Debt securities, fair value		4
Other | Short-term
Short-term
Debt securities, fair value	3	4
Other | Long-term
Short-term
Debt securities, fair value	9	1
Custody cash deposit
Cash equivalents
Cash equivalents		18
Corporate debt securities
Cash equivalents
Cash equivalents		18
Corporate debt securities | Short-term
Short-term
Debt securities, fair value	44	61
Corporate debt securities | Long-term
Short-term
Debt securities, fair value	45	44
Asset backed securities | Short-term
Short-term
Debt securities, fair value	19	26
Asset backed securities | Long-term
Short-term
Debt securities, fair value	13
Municipal bonds | Short-term
Short-term
Debt securities, fair value		11
Common Stock | Short-term
Short-term
Debt securities, fair value		4
Mutual funds
Short-term
Mutual funds	86	89
Convertible debt securities
Short-term
Debt securities, fair value	2
Mutual funds	2
Level 1
Short-term
Total	827	413
Level 1 | Foreign Exchange Contract
Short-term
Derivative contract assets, fair value	0	0
Derivative contract liabilities	0	0
Level 1 | Money market funds
Cash equivalents
Cash equivalents	737	302
Level 1 | Commercial paper
Cash equivalents
Cash equivalents	0	0
Level 1 | Commercial paper | Short-term
Short-term
Debt securities, fair value	0	0
Level 1 | Certificates of deposit
Cash equivalents
Cash equivalents	0	0
Level 1 | Certificates of deposit | Short-term
Short-term
Debt securities, fair value		0
Level 1 | U.S. government securities
Cash equivalents
Cash equivalents	0	0
Level 1 | U.S. government securities | Short-term
Short-term
Debt securities, fair value	0	0
Level 1 | U.S. government securities | Long-term
Short-term
Debt securities, fair value	0
Level 1 | Other
Cash equivalents
Cash equivalents	4	0
Level 1 | Other | Short-term
Short-term
Debt securities, fair value	0
Level 1 | Other | Long-term
Short-term
Debt securities, fair value	0	0
Level 1 | Custody cash deposit
Cash equivalents
Cash equivalents		18
Level 1 | Corporate debt securities
Cash equivalents
Cash equivalents		0
Level 1 | Corporate debt securities | Short-term
Short-term
Debt securities, fair value	0	0
Level 1 | Corporate debt securities | Long-term
Short-term
Debt securities, fair value	0	0
Level 1 | Asset backed securities | Short-term
Short-term
Debt securities, fair value	0	0
Level 1 | Asset backed securities | Long-term
Short-term
Debt securities, fair value	0
Level 1 | Municipal bonds | Short-term
Short-term
Debt securities, fair value		0
Level 1 | Common Stock | Short-term
Short-term
Debt securities, fair value		4
Level 1 | Mutual funds
Short-term
Mutual funds	86	89
Level 1 | Convertible debt securities
Short-term
Mutual funds	0
Level 2
Short-term
Total	435	392
Level 2 | Foreign Exchange Contract
Short-term
Derivative contract assets, fair value	14	18
Derivative contract liabilities	(31)	(11)
Level 2 | Money market funds
Cash equivalents
Cash equivalents	0	0
Level 2 | Commercial paper
Cash equivalents
Cash equivalents	169	55
Level 2 | Commercial paper | Short-term
Short-term
Debt securities, fair value	42	103
Level 2 | Certificates of deposit
Cash equivalents
Cash equivalents	35	6
Level 2 | Certificates of deposit | Short-term
Short-term
Debt securities, fair value		14
Level 2 | U.S. government securities
Cash equivalents
Cash equivalents	13	25
Level 2 | U.S. government securities | Short-term
Short-term
Debt securities, fair value	17	13
Level 2 | U.S. government securities | Long-term
Short-term
Debt securities, fair value	35
Level 2 | Other
Cash equivalents
Cash equivalents	8	4
Level 2 | Other | Short-term
Short-term
Debt securities, fair value	3	4
Level 2 | Other | Long-term
Short-term
Debt securities, fair value	9	1
Level 2 | Custody cash deposit
Cash equivalents
Cash equivalents		0
Level 2 | Corporate debt securities
Cash equivalents
Cash equivalents		18
Level 2 | Corporate debt securities | Short-term
Short-term
Debt securities, fair value	44	61
Level 2 | Corporate debt securities | Long-term
Short-term
Debt securities, fair value	45	44
Level 2 | Asset backed securities | Short-term
Short-term
Debt securities, fair value	19	26
Level 2 | Asset backed securities | Long-term
Short-term
Debt securities, fair value	13
Level 2 | Municipal bonds | Short-term
Short-term
Debt securities, fair value		11
Level 2 | Common Stock | Short-term
Short-term
Debt securities, fair value		0
Level 2 | Mutual funds
Short-term
Mutual funds	0	0
Level 2 | Convertible debt securities
Short-term
Mutual funds	0
Level 3
Short-term
Total	2	0
Level 3 | Foreign Exchange Contract
Short-term
Derivative contract assets, fair value	0	0
Derivative contract liabilities	0	0
Level 3 | Money market funds
Cash equivalents
Cash equivalents	0	0
Level 3 | Commercial paper
Cash equivalents
Cash equivalents	0	0
Level 3 | Commercial paper | Short-term
Short-term
Debt securities, fair value	0	0
Level 3 | Certificates of deposit
Cash equivalents
Cash equivalents	0	0
Level 3 | Certificates of deposit | Short-term
Short-term
Debt securities, fair value		0
Level 3 | U.S. government securities
Cash equivalents
Cash equivalents	0	0
Level 3 | U.S. government securities | Short-term
Short-term
Debt securities, fair value	0	0
Level 3 | U.S. government securities | Long-term
Short-term
Debt securities, fair value	0
Level 3 | Other
Cash equivalents
Cash equivalents	0	0
Level 3 | Other | Short-term
Short-term
Debt securities, fair value	0	0
Level 3 | Other | Long-term
Short-term
Debt securities, fair value	0	0
Level 3 | Custody cash deposit
Cash equivalents
Cash equivalents		0
Level 3 | Corporate debt securities
Cash equivalents
Cash equivalents		0
Level 3 | Corporate debt securities | Short-term
Short-term
Debt securities, fair value	0	0
Level 3 | Corporate debt securities | Long-term
Short-term
Debt securities, fair value	0	0
Level 3 | Asset backed securities | Short-term
Short-term
Debt securities, fair value	0	0
Level 3 | Asset backed securities | Long-term
Short-term
Debt securities, fair value	0
Level 3 | Municipal bonds | Short-term
Short-term
Debt securities, fair value		0
Level 3 | Common Stock | Short-term
Short-term
Debt securities, fair value		0
Level 3 | Mutual funds
Short-term
Mutual funds	0	$ 0
Level 3 | Convertible debt securities
Short-term
Mutual funds	$ 2