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Convertible Senior Notes, Net - Schedule of Convertible Debt (Details) - Senior Notes - USD ($) $ in Millions | Jan. 31, 2023 | Jan. 31, 2022
--- | --- | ---
2023 Notes |  |
Liability component: |  |
Principal | $ 0 | $ 17
Less: unamortized debt issuance costs and debt discount | 0 | (1)
Net carrying amount | 0 | 16
2025 Notes |  |
Liability component: |  |
Principal | 1,060 | 1,060
Less: unamortized debt issuance costs and debt discount | (8) | (149)
Net carrying amount | 1,052 | 911
2026 Notes |  |
Liability component: |  |
Principal | 1,150 | 1,150
Less: unamortized debt issuance costs and debt discount | (9) | (245)
Net carrying amount | $ 1,141 | 905
Additional Paid-in Capital | 2023 Notes |  |
Equity component: |  |
Notes |  | 4
Less: issuance costs |  | 0
Carrying amount of the equity component |  | 4
Additional Paid-in Capital | 2025 Notes |  |
Equity component: |  |
Notes |  | 221
Less: issuance costs |  | (4)
Carrying amount of the equity component |  | 217
Additional Paid-in Capital | 2026 Notes |  |
Equity component: |  |
Notes |  | 310
Less: issuance costs |  | (4)
Carrying amount of the equity component |  | $ 306

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- Definition Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (b)(1) -URI https://asc.fasb.org/extlink&oid=123466204&loc=SL6031897-161870 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(16)) -URI https://asc.fasb.org/extlink&oid=126734703&loc=d3e572229-122910 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)) -URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -URI https://asc.fasb.org/extlink&oid=126897435&loc=d3e534808-122878 + Details
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