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Goodwill and Acquired Intangible Assets - Goodwill (Details) - USD ($) $ in Millions | 12 Months Ended |
--- | --- | ---
Jul. 31, 2020 | Jul. 31, 2019 | Jul. 31, 2018
Goodwill [Roll Forward] |  |  |
Goodwill, beginning | $ 1,655 | $ 1,611 |
Goodwill Acquired/ Adjusted | (1) | 44 |
Goodwill, ending | 1,654 | 1,655 |
Small Business & Self-Employed |  |  |
Goodwill [Roll Forward] |  |  |
Goodwill, beginning | 1,518 | 1,496 |
Goodwill Acquired/ Adjusted | 0 | 22 |
Goodwill, ending | 1,518 | 1,518 |
Goodwill net of accumulated impairment losses |  |  | $ 114
Consumer |  |  |
Goodwill [Roll Forward] |  |  |
Goodwill, beginning | 42 | 23 |
Goodwill Acquired/ Adjusted | 0 | 19 |
Goodwill, ending | 42 | 42 |
Strategic Partner |  |  |
Goodwill [Roll Forward] |  |  |
Goodwill, beginning | 95 | 92 |
Goodwill Acquired/ Adjusted | (1) | 3 |
Goodwill, ending | $ 94 | $ 95 |

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- Definition Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(10)(1)) -URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=120320667&loc=SL49117168-202975 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=99380562&loc=d3e13770-109266 + Details
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- Definition Amount of accumulated impairment loss for an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (h) -URI http://asc.fasb.org/extlink&oid=121556970&loc=d3e13816-109267 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=121556970&loc=d3e13816-109267 + Details
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- Definition Amount of increase (decrease) of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=121556970&loc=d3e13816-109267 + Details
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