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Borrowings - Schedule of Long-Term Debt (Details) - USD ($) $ in Millions | Jan. 29, 2022 | Jul. 31, 2021
--- | --- | ---
Debt Instrument [Line Items] |  |
Total | $ 9,500 | $ 11,500
Unaccreted discount/issuance costs | (77) | (80)
Hedge accounting fair value adjustments | 48 | 106
Total | 9,471 | 11,526
Current portion of long-term debt | 502 | 2,508
Long-term debt | $ 8,969 | $ 9,018
Fixed-Rate Notes, 1.85%, Due September 20, 2021 |  |
Debt Instrument [Line Items] |  |
Interest rate, stated percentage |  | 1.85%
Amount |  | $ 2,000
Effective Rate |  | 1.90%
Fixed-Rate Notes, 3.00 %, Due June 15, 2022 |  |
Debt Instrument [Line Items] |  |
Interest rate, stated percentage | 3.00% |
Amount | $ 500 | $ 500
Effective Rate | 1.14% | 1.13%
Fixed-Rate Notes, 2.60%, Due February 28, 2023 |  |
Debt Instrument [Line Items] |  |
Interest rate, stated percentage | 2.60% |
Amount | $ 500 | $ 500
Effective Rate | 2.68% | 2.68%
Fixed-Rate Notes, 2.20%, Due September 20, 2023 |  |
Debt Instrument [Line Items] |  |
Interest rate, stated percentage | 2.20% |
Amount | $ 750 | $ 750
Effective Rate | 2.27% | 2.27%
Fixed-Rate Notes, 3.625%, Due March 4, 2024 |  |
Debt Instrument [Line Items] |  |
Interest rate, stated percentage | 3.625% |
Amount | $ 1,000 | $ 1,000
Effective Rate | 1.00% | 1.00%
Fixed-Rate Notes, 3.50%, Due June 15, 2025 |  |
Debt Instrument [Line Items] |  |
Interest rate, stated percentage | 3.50% |
Amount | $ 500 | $ 500
Effective Rate | 1.31% | 1.29%
Fixed-Rate Notes, 2.95%, Due February 28, 2026 |  |
Debt Instrument [Line Items] |  |
Interest rate, stated percentage | 2.95% |
Amount | $ 750 | $ 750
Effective Rate | 3.01% | 3.01%
Fixed-Rate Notes, 2.50%, Due September 20, 2026 |  |
Debt Instrument [Line Items] |  |
Interest rate, stated percentage | 2.50% |
Amount | $ 1,500 | $ 1,500
Effective Rate | 2.55% | 2.55%
Fixed-Rate Notes, 5.90%, Due February 15, 2039 |  |
Debt Instrument [Line Items] |  |
Interest rate, stated percentage | 5.90% |
Amount | $ 2,000 | $ 2,000
Effective Rate | 6.11% | 6.11%
Fixed-Rate Notes, 5.50%, Due January 15, 2040 |  |
Debt Instrument [Line Items] |  |
Interest rate, stated percentage | 5.50% |
Amount | $ 2,000 | $ 2,000
Effective Rate | 5.67% | 5.67%

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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 http://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 http://asc.fasb.org/extlink&oid=120400017&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 http://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 http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878 + Details
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