Financial Instruments - Schedule of Financial Instruments by Significant Investment Category (Details) - USD ($) $ in Millions	Jan. 31, 2025	Jan. 31, 2024
Cash equivalents
Amortized Cost	$ 1,599	$ 1,892
Long-term
Total, amortized cost	1,424	1,797
Total, Gross unrealized gains	13	13
Total, Gross unrealized losses	(1)	(1)
Total, fair value	1,436	1,809
Commercial paper
Short-term
Amortized Cost	96	159
Fair Value	96	159
Corporate debt securities
Short-term
Amortized Cost	79	75
Fair Value	79	75
Long-term
Amortized Cost	96	103
Gross Unrealized Gains	1	1
Gross Unrealized Losses	0	0
Marketable securities, long-term	97	104
U.S. government securities
Short-term
Amortized Cost	74	70
Fair Value	74	70
Long-term
Amortized Cost	52	24
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(1)	0
Marketable securities, long-term	51	24
Asset backed securities
Short-term
Amortized Cost	19	28
Fair Value	19	28
Long-term
Amortized Cost	71	59
Gross Unrealized Gains	0	0
Gross Unrealized Losses	0	0
Marketable securities, long-term	71	59
Other
Short-term
Amortized Cost	19	22
Fair Value	19	22
Long-term
Amortized Cost	8	11
Gross Unrealized Gains	0	0
Gross Unrealized Losses	0	0
Marketable securities, long-term	8	11
Agency mortgage-backed securities
Long-term
Amortized Cost	40	36
Gross Unrealized Gains	0	0
Gross Unrealized Losses	0	0
Marketable securities, long-term	40	36
Mutual funds
Long-term
Other investments	106	89
Other investments, gross unrealized gains	12	12
Other investments, gross unrealized losses	0	(1)
Other investments, fair value	118	100
Money market funds
Cash equivalents
Amortized Cost	618	693
Fair Value	618	693
Commercial paper
Cash equivalents
Amortized Cost	85	250
Fair Value	85	250
Certificates of deposit
Cash equivalents
Amortized Cost	38	80
Fair Value	38	80
U.S. government securities
Cash equivalents
Amortized Cost	19	92
Fair Value	19	92
Other
Cash equivalents
Amortized Cost	4	6
Fair Value	$ 4	$ 6