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Goodwill and Other Intangible Assets (Schedule of Goodwill by Reportable Segment) (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | ---
Mar. 31, 2024 | Sep. 30, 2023 | Dec. 31, 2022 | Sep. 30, 2022 | Mar. 31, 2024 | Mar. 31, 2023 | Jun. 30, 2023
Goodwill [Roll Forward] |  |  |  |  |  |  |
Beginning balance |  | $ 4,609 |  |  | $ 4,609 |  |
Goodwill acquired, net of purchase price adjustments |  |  |  |  | 853 |  |
Foreign currency translation adjustments and other |  |  |  |  | 3 |  |
Goodwill impairment |  |  |  |  | 671 |  |
Ending balance | $ 4,788 |  |  |  | 4,788 |  | $ 4,609
OptiFreight Logistics [Member] |  |  |  |  |  |  |
Goodwill [Roll Forward] |  |  |  |  |  |  |
Ending balance | 48 |  |  |  | 48 |  |
Pharmaceutical and Specialty Solutions |  |  |  |  |  |  |
Goodwill [Roll Forward] |  |  |  |  |  |  |
Beginning balance |  | 2,762 |  |  | 2,762 |  |
Goodwill acquired, net of purchase price adjustments |  |  |  |  | 856 |  |
Foreign currency translation adjustments and other |  |  |  |  | 0 |  |
Goodwill impairment |  |  |  |  | 0 |  |
Ending balance | 3,618 |  |  |  | 3,618 |  | 2,762
Goodwill, Transfers |  |  |  |  |  |  | 110
Global Medical Products and Distribution |  |  |  |  |  |  |
Goodwill [Roll Forward] |  |  |  |  |  |  |
Beginning balance |  | 677 |  |  | 677 |  |
Goodwill acquired, net of purchase price adjustments |  |  |  |  | (3) |  |
Foreign currency translation adjustments and other |  |  |  |  | 3 |  |
Goodwill impairment | 90 | 581 | $ 709 | $ 154 | 671 | $ 863 |
Ending balance | 0 |  |  |  | 0 |  | 677
Goodwill, Impaired, Accumulated Impairment Loss | 5,400 |  |  |  | 5,400 |  | 4,700
Other Segments |  |  |  |  |  |  |
Goodwill [Roll Forward] |  |  |  |  |  |  |
Beginning balance |  | $ 1,170 |  |  | 1,170 |  |
Goodwill acquired, net of purchase price adjustments |  |  |  |  | 0 |  |
Foreign currency translation adjustments and other |  |  |  |  | 0 |  |
Goodwill impairment |  |  |  |  | 0 |  |
Ending balance | 1,170 |  |  |  | 1,170 |  | 1,170
Goodwill, Transfers |  |  |  |  |  |  | $ (110)
Other Segments | OptiFreight Logistics [Member] |  |  |  |  |  |  |
Goodwill [Roll Forward] |  |  |  |  |  |  |
Ending balance | $ 48 |  |  |  | $ 48 |  |

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