Goodwill and Other Intangible Assets (Tables)
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9 Months Ended |
Jun. 30, 2026 |
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| Intangible Asset, Goodwill and Other [Abstract] |
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| Schedule of Changes in the Carrying Value of Goodwill by Reportable Segment |
The following is a summary of the changes in the carrying value of goodwill, by reportable segment, for the nine months ended June 30, 2026: | | | | | | | | | | | | | | | | | | | | | | | | | | | | (in thousands) | | U.S. Healthcare Solutions | | International Healthcare Solutions | | Other | | Total | | Goodwill as of September 30, 2025 | | $ | 11,104,990 | | | $ | 2,571,530 | | | $ | — | | | $ | 13,676,520 | | | Reallocated goodwill | | (1,421,428) | | | — | | | 1,421,428 | | | — | | | Goodwill recognized in connection with acquisitions | | 4,229,009 | | | 69,508 | | | — | | | 4,298,517 | | | Purchase accounting adjustments | | 3,793 | | | — | | | — | | | 3,793 | | | Goodwill impairment | | — | | | — | | | (165,665) | | | (165,665) | | Goodwill reclassified to assets held for sale (Note 3) | | — | | | — | | | (1,255,231) | | | (1,255,231) | | | Foreign currency translation | | — | | | (41,945) | | | (532) | | | (42,477) | | | Goodwill as of June 30, 2026 | | $ | 13,916,364 | | | $ | 2,599,093 | | | $ | — | | | $ | 16,515,457 | |
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| Schedule of Indefinite-lived Intangible Assets |
The following is a summary of other intangible assets: | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | June 30, 2026 | | September 30, 2025 | | (in thousands) | | Weighted Average Remaining Useful Life | | Gross
Carrying
Amount | | Accumulated
Amortization | | Net
Carrying
Amount | | Gross
Carrying
Amount | | Accumulated
Amortization | | Net
Carrying
Amount | | Indefinite-lived trade names | | | | $ | 17,000 | | | $ | — | | | $ | 17,000 | | | $ | 17,000 | | | $ | — | | | $ | 17,000 | | | Finite-lived: | | | | | | | | | | | | | | | | Customer relationships | | 12 years | | 3,994,307 | | | (1,375,141) | | | 2,619,166 | | | 5,250,912 | | | (1,860,484) | | | 3,390,428 | | | Other intangible assets | | 18 years | | 4,155,371 | | | (860,814) | | | 3,294,557 | | | 1,457,176 | | | (1,090,423) | | | 366,753 | | | Total other intangible assets | | | | $ | 8,166,678 | | | $ | (2,235,955) | | | $ | 5,930,723 | | | $ | 6,725,088 | | | $ | (2,950,907) | | | $ | 3,774,181 | |
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| Schedule of Finite-lived Intangible Assets |
The following is a summary of other intangible assets: | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | June 30, 2026 | | September 30, 2025 | | (in thousands) | | Weighted Average Remaining Useful Life | | Gross
Carrying
Amount | | Accumulated
Amortization | | Net
Carrying
Amount | | Gross
Carrying
Amount | | Accumulated
Amortization | | Net
Carrying
Amount | | Indefinite-lived trade names | | | | $ | 17,000 | | | $ | — | | | $ | 17,000 | | | $ | 17,000 | | | $ | — | | | $ | 17,000 | | | Finite-lived: | | | | | | | | | | | | | | | | Customer relationships | | 12 years | | 3,994,307 | | | (1,375,141) | | | 2,619,166 | | | 5,250,912 | | | (1,860,484) | | | 3,390,428 | | | Other intangible assets | | 18 years | | 4,155,371 | | | (860,814) | | | 3,294,557 | | | 1,457,176 | | | (1,090,423) | | | 366,753 | | | Total other intangible assets | | | | $ | 8,166,678 | | | $ | (2,235,955) | | | $ | 5,930,723 | | | $ | 6,725,088 | | | $ | (2,950,907) | | | $ | 3,774,181 | |
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