| Goodwill and Intangible Assets Disclosure [Abstract] | Period [Axis] |
|---|
2015-10-01 - 2016-09-30 |
|---|
Goodwill and Intangible Assets Disclosure [Abstract] | |
Changes in the carrying value of goodwill | Following is a summary of the changes in the carrying value of goodwill for the fiscal years ended September 30, 2016 and 2015 (in thousands): | | | | | | | | | | | | | | Pharmaceutical Distribution | | Other | | Total | Goodwill at September 30, 2014 | $ | 2,400,926 |
| | $ | 547,576 |
| | $ | 2,948,502 |
| Goodwill recognized in connection with acquisitions (As Revised) | 35,051 |
| | 1,171,199 |
| | 1,206,250 |
| Goodwill disposed in connection with divestitures | (3,605 | ) | | (2,626 | ) | | (6,231 | ) | Foreign currency translation | — |
| | (4,130 | ) | | (4,130 | ) | Goodwill at September 30, 2015 (As Revised) | 2,432,372 |
| | 1,712,019 |
| | 4,144,391 |
| Goodwill recognized in connection with acquisitions | 1,832,113 |
| | 18,196 |
| | 1,850,309 |
| Foreign currency translation | — |
| | (3,203 | ) | | (3,203 | ) | Goodwill at September 30, 2016 | $ | 4,264,485 |
| | $ | 1,727,012 |
| | $ | 5,991,497 |
|
|
Other intangible assets - indefinite-lived | Following is a summary of other intangible assets (in thousands): | | | | | | | | | | | | | | | | | | | | | | | | | | September 30, 2016 | | September 30, 2015 | | Gross Carrying Amount | | Accumulated Amortization | | Net Carrying Amount | | Gross Carrying Amount | | Accumulated Amortization | | Net Carrying Amount | Indefinite-lived intangibles — trade names | $ | 684,991 |
| | $ | — |
| | $ | 684,991 |
| | $ | 684,966 |
| | $ | — |
| | $ | 684,966 |
| Finite-lived intangibles: Customer relationships | 2,322,404 |
| | (273,638 | ) | | 2,048,766 |
| | 1,421,230 |
| | (146,227 | ) | | 1,275,003 |
| Trade names and other | 307,234 |
| | (73,142 | ) | | 234,092 |
| | 81,241 |
| | (48,091 | ) | | 33,150 |
| Total other intangible assets | $ | 3,314,629 |
| | $ | (346,780 | ) | | $ | 2,967,849 |
| | $ | 2,187,437 |
| | $ | (194,318 | ) | | $ | 1,993,119 |
|
|
Other intangible assets - finite-lived | Following is a summary of other intangible assets (in thousands): | | | | | | | | | | | | | | | | | | | | | | | | | | September 30, 2016 | | September 30, 2015 | | Gross Carrying Amount | | Accumulated Amortization | | Net Carrying Amount | | Gross Carrying Amount | | Accumulated Amortization | | Net Carrying Amount | Indefinite-lived intangibles — trade names | $ | 684,991 |
| | $ | — |
| | $ | 684,991 |
| | $ | 684,966 |
| | $ | — |
| | $ | 684,966 |
| Finite-lived intangibles: Customer relationships | 2,322,404 |
| | (273,638 | ) | | 2,048,766 |
| | 1,421,230 |
| | (146,227 | ) | | 1,275,003 |
| Trade names and other | 307,234 |
| | (73,142 | ) | | 234,092 |
| | 81,241 |
| | (48,091 | ) | | 33,150 |
| Total other intangible assets | $ | 3,314,629 |
| | $ | (346,780 | ) | | $ | 2,967,849 |
| | $ | 2,187,437 |
| | $ | (194,318 | ) | | $ | 1,993,119 |
|
|