Property, Equipment and Technology, Net - Summary of Property, Equipment and Technology, Net (Detail) - USD ($) $ in Millions |
Sep. 30, 2022 |
Sep. 30, 2021 |
|---|---|---|
| Property, Plant and Equipment [Line Items] | ||
| Total property, equipment and technology | $ 8,881 | $ 7,674 |
| Accumulated depreciation and amortization | (5,658) | (4,959) |
| Property, equipment and technology, net | 3,223 | 2,715 |
| Land | ||
| Property, Plant and Equipment [Line Items] | ||
| Total property, equipment and technology | 72 | 72 |
| Buildings and building improvements | ||
| Property, Plant and Equipment [Line Items] | ||
| Total property, equipment and technology | 1,003 | 1,008 |
| Furniture, equipment and leasehold improvements | ||
| Property, Plant and Equipment [Line Items] | ||
| Total property, equipment and technology | 2,230 | 2,048 |
| Construction-in-progress | ||
| Property, Plant and Equipment [Line Items] | ||
| Total property, equipment and technology | 285 | 226 |
| Technology | ||
| Property, Plant and Equipment [Line Items] | ||
| Total property, equipment and technology | $ 5,291 | $ 4,320 |