Acquisitions - Additional Information (Details) - USD ($) $ in Millions |
12 Months Ended | ||
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Sep. 30, 2019 |
Sep. 30, 2018 |
Sep. 30, 2017 |
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| Business Acquisition [Line Items] | |||
| Goodwill | $ 15,656 | $ 15,194 | $ 15,110 |
| 2019 Business Acquisitions | |||
| Business Acquisition [Line Items] | |||
| Total purchase consideration | 940 | ||
| Cash portion of purchase consideration | 886 | ||
| Deferred cash portion of purchase consideration | 54 | ||
| Goodwill | 643 | ||
| Expected deductible portion of goodwill | $ 360 |
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
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- Definition The amount of goodwill arising from a business combination that is expected to be deductible for tax purposes. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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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. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Business Combination, Deferred Cash Consideration No definition available.
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- Details
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